Updated on 2021/05/26

写真a

 
MINAMI, Masayo
 
Organization
Institute for Space-Earth Environmental Research Division for Chronological Research Professor
Graduate School
Graduate School of Environmental Studies
Title
Professor
Contact information
メールアドレス
External link

Degree 2

  1. 博士(理学) ( 1995.9   電気通信大学 ) 

  2. Master of Science ( 1990.3   The University of Tokyo ) 

Research Interests 5

  1. meteorite

  2. Isotope

  3. Radiocarbon

  4. sediment

  5. Fossil bone

Research Areas 3

  1. Natural Science / Human geosciences  / Isotope Geochemistry

  2. Humanities & Social Sciences / Cultural assets study  / Radiocarbon dating

  3. Environmental Science/Agriculture Science / Environmental dynamic analysis  / Isotopic analysis

Current Research Project and SDGs 4

  1. 火葬骨の地球化学的分析

  2. ストロンチウム同位体比の地球化学図

  3. Evaluation of carbonation process in concrete using radiocarbon

  4. 化石骨試料に対する信頼度の高い放射性炭素および炭素・窒素同位体比測定の試み

Research History 22

  1. Nagoya University   Institute for Space-Earth Environmental Research Division for Chronological Research   Professor

    2019.4

  2. 名古屋大学宇宙地球環境研究所   年代測定研究部   准教授

    2015.10

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    Country:Japan

  3. Nagoya University   Institute for Space and Earth Environmental Research   Associate professor

    2015.10

  4. Nagoya University   Institute for Space-Earth Environmental Research Division for Chronological Research   Associate professor

    2015.10 - 2019.3

  5. 名古屋大学年代測定総合研究センター   准教授

    2007.4 - 2015.9

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    Country:Japan

  6. Nagoya University   Center for Chronological Research   Associate professor

    2007.4 - 2015.9

  7. Nagoya University   Center for Chronological Research.   Associate professor

    2007.4 - 2015.9

  8. 名古屋大学年代測定総合研究センター   助教授

    2005.6 - 2007.3

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    Country:Japan

  9. Nagoya University   Center for Chronological Research   Assistant Professor

    2005.6 - 2007.3

  10. Nagoya University   Center for Chronological Research.   Assistant Professor

    2005.6 - 2007.3

  11. 名古屋大学大学院環境学研究科地球環境科学専攻   助教授

    2003.4 - 2005.5

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    Country:Japan

  12. Nagoya University   Graduate School of Environmental Studies, Department of Earth and Environmental Sciences   Assistant Professor

    2003.4 - 2005.5

  13. 名古屋大学大学院環境学研究科地球環境科学専攻   助手

    2001.4 - 2003.3

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    Country:Japan

  14. Nagoya University   Graduate School of Environmental Studies, Department of Earth and Environmental Sciences   Assistant

    2001.4 - 2003.3

  15. 名古屋大学大学院理学研究科地球惑星理学専攻   助手

    2000.1 - 2001.3

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    Country:Japan

  16. Nagoya University   Graduate School of Science   Assistant

    2000.1 - 2001.3

  17. Japan Society for Promotion of Science

    1998.4 - 2000.1

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    Country:Japan

  18. 日本学術振興会   特別研究員(PD)

    1998.4 - 2000.1

  19. Japan Society for Promotion of Science

    1998.4 - 2000.1

  20. 名古屋大学年代測定資料研究センター   研究機関研究員

    1996.10 - 1998.3

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    Country:Japan

  21. 名古屋大学年代測定資料研究センター   研究機関研究員

    1996.10 - 1998.3

  22. Nagoya University

    1996.10 - 1998.3

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Education 5

  1. The University of Electro-Communications   Graduate School, Division of Electro Communications

    1991.4 - 1995.9

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    Country: Japan

  2. The University of Electro-Communications   Graduate School, Division of Electro Communications

    1991.4 - 1995.9

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    Country: Japan

  3. The University of Electro-Communications   Graduate School, Division of Electro Communications

    1991.4 - 1995.9

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    Country: Japan

  4. The University of Tokyo

    1988.4 - 1990.3

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    Country: Japan

  5. The University of Tokyo   Faculty of Science

    1984.4 - 1988.3

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    Country: Japan

Professional Memberships 7

  1. 一般社団法人 日本地球化学会   代表理事(副会長)

    2019.9 - 2021.9

  2. 日本地球化学会   会計幹事

    2017.11 - 2019.9

  3. 日本AMS研究協会   運営委員

    2006.4

  4. 日本文化財科学会

  5. The Mass Spectrometry Society of Japan

  6. 日本地球惑星科学連合   理事

  7. 日本地球惑星科学連合   顕彰委員会委員

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Committee Memberships 10

  1. The Geochemical Sciety of Japan   Vice President  

    2019.9 - 2021.8   

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    Committee type:Academic society

  2. 2020年度日本地球科学会第67回年会   実行委員長  

    2020.5 - 2021.1   

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    Committee type:Academic society

  3. 公益社団法人 日本地球惑星科学連合   代議員  

    2020.4 - 2022.3   

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    Committee type:Academic society

  4. 愛知県   愛知県環境審議会委員  

    2018.11   

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    Committee type:Municipal

  5. 愛知県   愛知県環境審議会水質・地盤環境部会委員  

    2020.11   

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    Committee type:Municipal

  6. 公益社団法人 日本地球惑星科学連合   顕彰委員会委員  

    2020.10   

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    Committee type:Academic society

  7. 情報・システム研究機構 国立極地研究所   二次イオン質量分析研究委員会委員  

    2018.4   

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    Committee type:Academic society

  8. 日本AMS研究協会   運営委員  

    2017.4   

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    Committee type:Academic society

  9. 愛知県   愛知県環境審議会温泉部会委員  

    2015.1   

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    Committee type:Municipal

  10. 日本質量分析学会   同位体比部会世話人  

    2011.4   

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    Committee type:Academic society

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Papers 263

  1. Early Miocene post-collision andesite in the Takab area, northwest Iran Reviewed International coauthorship

    Hossein Azizi, Narges Daneshvar, Asrin Mohammadi, Yoshihiro Asahara, Scott A Whattam, Motohiro Tsuboi, Masayo Minami

    Journal of Petrology     2021.3

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: https://doi.org/10.1093/petrology/egab022

  2. Characteristics in Trace Elements Compositions of tephras (B-Tm and To-a) for Identification tools Reviewed

    Geochemical Journal   Vol. 55   2021.3

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2343/geochemj.2.0619

  3. Syngenetic rapid growth of ellipsoidal silica concretions with bitumen cores Reviewed International coauthorship

    Yoshida Hidekazu, Kuma Ryusei, Hasegawa Hitoshi, Katsuta Nagayoshi, Sirono Sin-iti, Minami Masayo, Nishimoto Shoji, Takagi Natsuko, Kadowaki Seiji, Metcalfe Richard

    SCIENTIFIC REPORTS   Vol. 11 ( 1 ) page: 4230   2021.2

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Scientific Reports  

    DOI: 10.1038/s41598-021-83651-w

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  4. Sequential magma injection with a wide range of mixing and mingling in Late Jurassic plutons, southern Ghorveh, western Iran Reviewed International coauthorship

    Azizi Hossein, Asahara Yoshihiro, Minami Masayo, Anma Ryo

    JOURNAL OF ASIAN EARTH SCIENCES   Vol. 200   2020.9

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    Language:English   Publisher:Journal of Asian Earth Sciences  

    DOI: 10.1016/j.jseaes.2020.104469

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  5. Investigation of rare earth elements (REEs) as exploration potential in Intrusive bodies in the northern Sanandaj-Sirjan zone (Kurdistan area), western Iran Reviewed International coauthorship

    Azizi Hossein, Maghsoudloo Ali, Nouri Fatemeh, Asahara Yoshihiro, Yamamoto Koshi, Minami Masayo, Tsuboi Motohiro

    GEOCHEMICAL JOURNAL   Vol. 54 ( 4 ) page: 221 - 232   2020.8

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:一般社団法人日本地球化学会  

    <p>Various granitoid bodies from the Neoproterozoic to Late Cenozoic intruded in the Sanandaj-Sirjan zone (SaSZ) in western Iran. In this research, we have compiled data for rare earth elements (REEs) concentration in the granitoid bodies which we have collected in the northern part of the SaSZ in this decade. The abundances of ∑REEs in a part of the granitoids are over 500 and even 2000 ppm. Although most of the granitoids such as Ebrahim Atar, Panjeh, Ghorveh, Kangareh, and Ghalaylan have low or normal values of ∑REEs and are not hopeful for future exploration, some hopeful bodies such as the Mobarak Abad granitoid in the east of Sanandaj and the Hassansalaran A-type granites in the east of Saqqez are recognized as REEs potential for future exploration. The chemical compositions of the REEs-enriched granites such as the Hassansalaran A-type and Mobarak Abad granites infer that the granites were generated in an extensional tectonic regime. Our finding shows that the granitic rocks which are related to the within plate tectonic setting in the SaSZ, NW Iran, can be considered as good potential for REEs exploration in the future.</p>

    DOI: 10.2343/geochemj.2.0584

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  6. Rapid formation of gigantic spherical dolomite concretion in marine sediments Reviewed

    Muramiya Yusuke, Yoshida Hidekazu, Kubota Kaoru, Minami Masayo

    SEDIMENTARY GEOLOGY   Vol. 404   2020.7

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    Authorship:Last author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Sedimentary Geology  

    DOI: 10.1016/j.sedgeo.2020.105664

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  7. Variability of protoliths and pressure-temperature conditions of amphibolites from the Ohmachi Seamount (Izu-Bonin-Mariana arc): Evidence of a fossil subduction channel in modern intra-oceanic arcs Reviewed

    Imayama, T., Ueda, H., Usuki, T., Minami, M., Asahara, Y., Nagahashi, T.

    Mineralogy and Petrology     2020.5

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    Language:English  

    DOI: 10.1007/s00710-020-00705-z

  8. RADIOCARBON DATING OF TEXTILE COMPONENTS FROM HISTORICAL SILK COSTUMES AND OTHER CLOTH PRODUCTS IN THE RYUKYU ISLANDS, JAPAN

    Nakamura Toshio, Terada Takako, Ueki Chikako, Minami Masayo

    RADIOCARBON   Vol. 61 ( 6 ) page: 1663 - 1674   2019.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1017/RDC.2019.105

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  9. EFFECT OF CRYSTALLINITY OF APATITE IN CREMATED BONE ON CARBON EXCHANGES DURING BURIAL AND RELIABILITY OF RADIOCARBON DATING

    Minami M., Mukumoto H., Wakaki S., Nakamura T.

    RADIOCARBON   Vol. 61 ( 6 ) page: 1823 - 1834   2019.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1017/RDC.2019.97

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  10. A SUITABLE PROCEDURE FOR PREPARING OF WATER SAMPLES USED IN RADIOCARBON INTERCOMPARISON Reviewed

    Takahashi H. A., Minami M., Aramaki T., Handa H., Saito-Kokubu Y., Itoh S., Kumamoto Y.

    RADIOCARBON   Vol. 61 ( 6 ) page: 1879 - 1887   2019.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1017/RDC.2019.104

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  11. Radiocarbon changes of unpoisoned water samples during long-term storage Reviewed

    Takahashi Hiroshi A, Minami Masayo, Aramaki Takafumi, Handa Hiroko, Matsushita Makoto

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 455   page: 195 - 200   2019.9

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.nimb.2018.11.029

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  12. Sr-87/Sr-86 age determination by rapidly formed spherical carbonate concretions (9, 1003, 2019) Reviewed

    Yoshida Hidekazu, Asahara Yoshihiro, Yamamoto Koshi, Katsuta Nagayoshi, Minami Masayo, Metcalfe Richard

    SCIENTIFIC REPORTS   Vol. 9 ( 1 ) page: 7184   2019.5

  13. Sr-87/Sr-86 age determination by rapidly formed spherical carbonate concretions Reviewed

    Hidekazu Yoshida, Yoshihiro Asahara, Koshi Yamamoto, Nagayoshi Katsuta, Masayo Minami, Richard Metcalfe

    SCIENTIFIC REPORTS   Vol. 9 ( 1 ) page: 1003   2019.1

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:NATURE PUBLISHING GROUP  

    Isolated spherical carbonate concretions are frequently observed in finer grained marine sediments of widely varying geological age. Recent studies on various kinds of spherical carbonate (CaCO3) concretions revealed that they formed very rapidly under tightly constrained conditions. However, the formation ages of the isolated spherical carbonate concretions have never been determined. Here we use Sr-87/Sr-86 ratios to determine the ages of these spherical concretions. The studied concretions formed in the Yatsuo Group of Miocene age in central Japan. Some formed post- mortem around tuskshells (Fissidentalium spp.), while other concretions have no shell fossils inside. The deformation of sedimentary layers around the concretions, combined with geochemical analyses, reveal that Sr was incorporated into the CaCO3 concretions during their rapid formation. Strontium isotopic stratigraphy using Sr-87/Sr-86 ratios of all concretions indicates an age of 17.02 +/- 0.27 Ma, with higher accuracy than the ages estimated using micro- fossils from the Yatsuo Group. The results imply that the Sr-87/Sr-86 ratio of isolated spherical carbonate concretions can be applied generally to determine the numerical ages of marine sediments, when concretions formed soon after sedimentation. The Sr-87/Sr-86 age determinations have high accuracy, even in cases without any fossils evidence.

    DOI: 10.1038/s41598-019-38593-9

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  14. Landscape and early farming at Neolithic sites in Slemani, Iraqi Kurdistan: A case study of Jarmo and Qalat Said Ahmadan. Reviewed

    Tsuneki, A., Rasheed, K., Watanabe, N., Anma, R., Tatsumi, Y., Minami, M.

    Pasleorient   Vol. 45 ( 2 ) page: 33-52   2019

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  15. Retentive primary Sr isotopic ratio of source rock to sediment and sedimentary rock through multistage sedimentary cycles: Case study of stream sediments in Awajishima Island Reviewed

    Ohta Atsuyuki, Minami Masayo

    Chikyukagaku   Vol. 53 ( 2 ) page: 59 - 70   2019

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    Language:Japanese   Publisher:The Geochemical Society of Japan  

    <p>We have elucidated retention of primary Sr isotopic ratios in source rocks to sediments and sedimentary rocks during repeated sedimentation recycling. Twenty-three fine stream sediments (<180 μm) in Awajishima Island were used for the study. The <sup>87</sup>Rb/<sup>86</sup>Sr and <sup>87</sup>Sr/<sup>86</sup>Sr of stream sediments originated from Cretaceous Ryoke granitic rocks and Cretaceous sedimentary rocks (Izumi Group) were similar to those of the respective source rocks. Incidentally, the <sup>87</sup>Rb/<sup>86</sup>Sr-<sup>87</sup>Sr/<sup>86</sup>Sr of stream sediments in Awajishima Island suggests that Cretaceous felsic igneous rocks are the dominant source of clastics in Izumi Group. Stream sediments derived from Neogene and Quaternary sediments, which are originated from granitic rocks and Izumi Group, had comparable isotopic ratios to those of the respective primitive source rocks. Accordingly, <sup>87</sup>Rb/<sup>86</sup>Sr and <sup>87</sup>Sr/<sup>86</sup>Sr can be retained during the repeated recycling process of sediments and sedimentary rocks. Stream sediment is presumed to consist of clastics supplied from respective lithologies according to their exposed areas. However, <sup>87</sup>Sr/<sup>86</sup>Sr of stream sediment is not comparable to the values calculated from exposed areas of lithologies and isotopic data of parent rocks. The result suggests that amount of sedimentation denudation and production differs among different lithologies and is not simply proportional to their exposed areas.</p>

    DOI: 10.14934/chikyukagaku.53.59

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  16. Fe-oxide concretions formed by interacting carbonate and acidic waters on Earth and Mars

    Yoshida H., Hasegawa H., Katsuta N., Maruyama I., Sirono S., Minami M., Asahara Y., Nishimoto S., Yamaguchi Y., Ichinnorov N., Metcalfe R.

    SCIENCE ADVANCES   Vol. 4 ( 12 )   2018.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1126/sciadv.aau0872

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  17. Sr-87/Sr-86 compositional linkage between geological and biological materials: A case study from the Toyota granite region of Japan

    Minami M., Suzuki K.

    CHEMICAL GEOLOGY   Vol. 484   page: 224 - 232   2018.5

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    DOI: 10.1016/j.chemgeo.2018.03.013

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  18. Pseudo-fixed dead time circuit for designing and implementation of JEOL-type X-ray counting systems

    Kato Takenori, Suzuki Kazuhiro, Jeen Mi-Jung, Minami Masayo

    CHEMICAL GEOLOGY   Vol. 484   page: 16 - 21   2018.5

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1016/j.chemgeo.2017.12.030

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  19. Generalized conditions of spherical carbonate concretion formation around decaying organic matter in early diagenesis

    Yoshida Hidekazu, Yamamoto Koshi, Minami Masayo, Katsuta Nagayoshi, Sin-ichi Sirono, Metcalfe Richard

    SCIENTIFIC REPORTS   Vol. 8 ( 1 ) page: 6308   2018.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1038/s41598-018-24205-5

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  20. Bomb-C-14 Peak in the North Pacific Recorded in Long-Lived Bivalve Shells (Mercenaria stimpsoni)

    Kubota Kaoru, Shirai Kotaro, Murakami-Sugihara Naoko, Seike Koji, Minami Masayo, Nakamura Toshio, Tanabe Kazushige

    JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS   Vol. 123 ( 4 ) page: 2867 - 2881   2018.4

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1002/2017JC013678

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  21. Comparing the Sr-87/Sr-86 of the bulk and exchangeable fractions in stream sediments: Implications for Sr-87/Sr-86 mapping in provenance studies Reviewed

    Yuka Jomori, Masayo Minami, Akiko Sakurai-Goto, Atsuyuki Ohta

    APPLIED GEOCHEMISTRY   Vol. 86   page: 70 - 83   2017.11

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:PERGAMON-ELSEVIER SCIENCE LTD  

    We are preparing a nationwide distribution map of strontium isotope ratio (Sr-87/Sr-86) in Japan, using stream sediment to obtain basic Sr-87/Sr-86 data for the provenance analysis of food production and archaeological substances. To clarify the effect of particle size on Sr-87/Sr-86 in stream sediments, we analyzed stream sediment from the Shigenobu River system in Matsuyama, Ehime Prefecture, Japan, where a variety of silicate-dominated lithologies, that is, several bedrocks of andesitic, granitic, and siliciclastic sedimentary rocks, are distributed. This paper reports elemental concentrations and Sr-87/Sr-86 in stream sediments for six particle-size fractions (1000-500, 500-300, 300-180, 180-125, 125-75, and &lt; 75 mu m). The results from stream sediments were compared with results from bedrock units and stream water over the catchment. The elemental concentrations in stream sediment tended to increase with decreasing particle size in all lithologies; however, Sr concentrations varied less than other elements across particle sizes. For most of the samples, Sr-87/Sr-86 varied by less than 0.001 among the six particle-size fractions, which was less than the variation among the different lithologies. Therefore, Sr-87/Sr-86 in the &lt; 180 mu m particle-size fraction, which is normally used in Japanese nationwide geochemical mapping, should be a reliable proxy for bedrock Sr-87/Sr-86. The Sr-87/Sr-86 values in water samples from the Shigenobu River system were lower and less variable than Sr-87/Sr-86 in the stream sediments, and they did not faithfully correspond to the watershed geology. The inconsistency may reflect selective dissolution of Sr from plagioclase. Interestingly, Sr-87/Sr-86 values of the exchangeable fraction of stream sediment in the &lt; 180 mu m fraction were strongly correlated with Sr-87/Sr-86 of stream water samples. Because Sr-87/Sr-86 in plant and animal bodies reflects that of their water sources, the exchangeable fraction of stream sediment may be a useful proxy for geochemical provenance in Japan instead of stream water. (C) 2017 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.apgeochem.2017.09.004

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  22. 初期続成過程における巨大球状炭酸塩コンクリーション形成 Reviewed

    村宮悠介・吉田英一・山本鋼志・南 雅代

    地質学雑誌   Vol. 11   page: 939-952   2017

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  23. Grain-size variations in 87Sr/86Sr and elemental concentrations of stream sediments in a granitic area: Fundamental study on 87Sr/86Sr spatial distribution mapping

    Masayo Minami, Yuka Jomori, Kazuhiro Suzuki, Atsuyuki Ohta

    Geochemical Journal   Vol. 51 ( 6 ) page: 469 - 484   2017

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:The Physiological Society of Japan  

    The strontium isotope ratio (87Sr/86Sr) is often used to identify the origin of agricultural products and the movement of ancient people, and a nationwide 87Sr/86Sr distribution map would greatly assist such studies. The Geological Survey of Japan (GSJ), AIST has already created nationwide element distribution maps using the &lt
    180 μm fraction of stream sediments, but this grain size fraction may not necessarily be suitable for mapping the 87Sr/86Sr isotopic ratio. Therefore, this study investigated the effect of grain size on elemental concentrations and 87Sr/86Sr ratios in stream sediments and compared their values with those of the source rocks. The stream sediments studied were collected from the granitic drainage basin of the Yahagi and Yada rivers in Aichi Prefecture, central Japan. The elemental concentrations and 87Sr/86Sr ratios of five fractions in the size range 1000-75 μm from the stream sediments of the Yahagi River tributaries varied with the grain size, and the variations corresponded to the heterogeneity of the mineral compositions in each fraction. The difference in the elemental concentrations and 87Sr/86Sr ratios among the sampling points was smallest in the 300-75 μm fractions, which showed 87Sr/86Sr and 87Rb/86Sr values that were closest to those of the source rocks. The coarser (&gt
    300 μm) and the fine (&lt
    75 μm) fractions of the stream sediments showed systematically higher 87Rb/86Sr and lower 87Sr/86Sr ratios than the Rb-Sr mineral isochron for the source rock, and the result suggests that 1) these fractions are enriched in K- and Rb-rich minerals such as K-feldspar, biotite, and hornblende
    and 2) Sr is lost relative to Rb because of weathering processes. Furthermore, temporal variations in 87Sr/86Sr of the &lt
    180 μm stream sediments collected at a fixed sampling site in the Yada River were 0.001, which is smaller than the variations associated with grain size seen in the 87Sr/86Sr values in the granitic study area. Consequently, we concluded that, in granite areas, the &lt
    180 μm fraction of the stream sediments can be used for 87Sr/86Sr mapping, implying that a nationwide 87Sr/86Sr map can be made using sediment samples with a grain size of less than 180 μm.

    DOI: 10.2343/geochemj.2.0478

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  24. A distinctive chemical composition of the tektites from Thailand and Vietnam, and its geochemical significance Reviewed

    Lee, S-G., Tanaka, T., Asahara, Y., Minami, M.

    Jour. Petrol. Soc. Korea   Vol. 26   page: 281-295   2017

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  25. Formation of gigantic spherical carbonate concretion in early diagenesis

    Muramiya Yusuke, Yoshida Hidekazu, Yamamoto Koshi, Minami Masayo

    The Journal of the Geological Society of Japan   Vol. 123 ( 11 ) page: 939 - 952   2017

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    Publisher:The Geological Society of Japan  

    <p>Many types of spherical carbonate concretions are common in sedimentary strata of various ages worldwide. However, the process by which these concretions form is not completely understood. This study investigated a gigantic spherical carbonate concretion, with a diameter of ~1.5 m, identified in Miocene fine tuffaceous sandstone in the Lower Toyohama Formation (Morozaki Group) on Chita Peninsula, Aichi prefecture, Japan. Detailed field and microscopic observations, porosity measurements, mineralogical examination, and geochemical analyses were carried out to understand the formation of such a large concretion in a marine sediment. The field exposure shows that the concretion formed during early diagenesis, before compaction due to subsequent sedimentation. Thin section observations and geochemical, isotopic, and XRD analyses revealed that the concretion formed as calcite and was later replaced by dolomite. By combining the porosity and dolomite composition with a porosity-burial depth relationship, it is estimated that the concretion formed at a depth below the seafloor of up to a few hundreds of meters, and was buried to about 2400 to 5500 m at the deepest. This depth is consistent with the depth of zeolite formation in the rock matrix, as estimated from the geothermal gradient. Interpretation of geochemical analyses suggests that the gigantic concretion was formed over several decades. Our results indicate that even gigantic carbonate concretions form quite rapidly after marine sediment deposition during early diagenesis.</p>

    DOI: 10.5575/geosoc.2017.0039

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  26. <sup>14</sup>C Ages and the Significance of <i>Porites</i>, Beached on the Eastern Part of Maibah Beach, Southeast of Miyako Island, Okinawa Prefecture

    OMOTO Kunio, MINAMI Masayo

    Kikan Chirigaku   Vol. 69 ( 3 ) page: 119 - 127   2017

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    <p>Maibah beach is located between Higashihenna promontory and Miyato-zaki (promontory), southeast of Miyako Island. Along the sandy beach, beachrock develops intertidal zone. A large boulder lying on the eastern part of the beach has been recognized as a fossil <i>Tridacna gigas</i>. We collected two samples from the boulder in order to determine the age of its outer layer, and noticed that the cross section was different from <i>Tridacna gigas</i>. The samples indicated obviously a characteristic of coralline structure. Then identification and radiocarbon dating of the samples were performed.</p><p>The results show that coral is <i>Porites</i> sp. and probably <i>in situ</i>, and that it was transported from lagoon and beached on the shore, judged from the field observation. The calibrated ages were 1626 cal AD and 1679 cal AD, respectively. It is considered that <i>Porites</i> had transported and beached on the shore by huge tsunamis or high waves of typhoon. Unfortunately there was no huge typhoon record, and then we tried to correlate calibrated age of <i>Porites</i> with historical tsunami and earthquake records. According to historical record, Miyako Islands were attacked by strong earthquake of AD 1667 which probably caused tsunami. An average calibrated age of <i>Porites</i> (1653±23 cal AD) coincides with AD 1667 earthquake tsunami with a margin of statistical error. However, age of removed soft outer layers of <i>Porites</i> strongly suggests that it was transported from its original habitat to the present location not only by AD 1667 earthquake tsunami but also by AD 1771 Meiwa Tsunami.</p>

    DOI: 10.5190/tga.69.3_119

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  27. CHANGES OF CHEMICAL STRUCTURE AND COMPOSITION OF CHARCOAL BY RADIOCARBON PRETREATMENTS: DECONTAMINATION BY ABA AND ABOx TREATMENTS Reviewed

    Tomiyama Shinji, Minami Masayo, Nakamura Toshio, Mimura Koichi, Kagi Hiroyuki

    RADIOCARBON   Vol. 58 ( 3 ) page: 565 - 581   2016.9

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    DOI: 10.1017/RDC.2016.29

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  28. 炭化物の14C-前処理過程の化学的解明−和歌山県根来寺坊院跡から出土した炭化米の分析− Reviewed

    冨山慎二・南 雅代・中村俊夫・金原正明

    考古学と自然科学   Vol. 72   page: 45 - 61   2016

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  29. Influence of Akiyoshi limestone bedrock on elemental concentrations and Sr isotopic ratio in stream sediments Reviewed

    Jomori Yuka, Ohta Atsuyuki, Minami Masayo

    Chikyukagaku   Vol. 50 ( 1 ) page: 11 - 27   2016

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    Language:Japanese   Publisher:The Geochemical Society of Japan  

    Chemical compositions and Sr isotopic ratio (<sup>87</sup>Sr/<sup>86</sup>Sr) of stream sediments collected from Akiyoshi-dai, where is underlain by a large-scale limestone bedrock, were measured to investigate the influence of limestone bedrocks on geochemical maps. The sediments were sieved with eight screen sizes, and their bulk and acetic acid soluble fractions were both analyzed. 50–100% of the total Ca was extracted by acid leaching from stream sediments in the catchment of Akiyoshi limestone, indicating that Ca exists mainly in carbonate materials. In contrast, only 5–10% and 15–45% of the total Sr were extracted from their coarse (>125 μm) and fine particles (<125 μm),respectively. Therefore, Sr exists dominantly in aluminosilicate minerals even in stream sediments originated from limestone bedrock. Because the acid extraction percentages of Ca and Sr increase exponentially below 125 μm of grain size, carbonate materials would be supplied by fine-grained particles from limestone bedrock. <sup>87</sup>Sr/<sup>86</sup>Sr ratios in the acid soluble fractions were systematically lower than those of the bulk fractions and comparable to <sup>87</sup>Sr/<sup>86</sup>Sr of Akiyoshi limestone. Although limestone bedrock apparently scarcely influence on Sr concentration and <sup>87</sup>Sr/<sup>86</sup>Sr of stream sediments, <sup>87</sup>Sr/<sup>86</sup>Sr of carbonate materials is successfully extracted from the bulk sediments using acetic acid-based extraction method.

    DOI: 10.14934/chikyukagaku.50.11

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  30. Seasonal variations of C-14 and δ C-13 for cave drip waters in Ryugashi Cave, Shizuoka Prefecture, central Japan Reviewed

    Minami Masayo, Kato Tomomi, Horikawa Keiji, Nakamura Toshio

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 362   page: 202 - 209   2015.11

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    Authorship:Corresponding author   Language:English   Publishing type:Research paper (scientific journal)   Publisher:Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms  

    DOI: 10.1016/j.nimb.2015.05.020

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  31. Early post-mortem formation of carbonate concretions around tusk-shells over week-month timescales Reviewed International coauthorship

    Yoshida Hidekazu, Ujihara Atsushi, Minami Masayo, Asahara Yoshihiro, Katsuta Nagayoshi, Yamamoto Koshi, Sirono Sin-iti, Maruyama Ippei, Nishimoto Shoji, Metcalfe Richard

    SCIENTIFIC REPORTS   Vol. 5   page: 14123   2015.9

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    DOI: 10.1038/srep14123

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  32. Radiocarbon Dating of Charcoal Remains Excavated from Qalat Said Ahmadan.

    Minami, M. and Tomiyama, S.

      Vol. XXXVI   page: 53-57   2015

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  33. メソアメリカ南東部太平洋沿岸における先スペイン期製塩活動−エルサルバドル共和国ヌエバ・エスペランサ遺跡を中心に−. Reviewed

    市川 彰・南 雅代・八木宏明

    日本考古学論文   Vol. 40   page: 1-18   2015

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  34. Ultrafiltration pretreatment for <sup>14</sup>C dating of fossil bones from archaeological sites in Japan

    Minami M.

    Radiocarbon   Vol. 55 ( 2-3 ) page: 481 - 490   2013.9

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    DOI: 10.2458/azu_js_rc.55.16334

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  35. Spatial distribution of ^<87>Sr/^<86>Sr ratios of stream sediments in Shikoku Islandand the Kii Peninsula, Southwest Japan Reviewed

    JOMORI YUKA, MINAMI MASAYO, OHTA ATSUYUKI, TAKEUCHI Makoto, IMAI Noboru

    Geochemical Journal   Vol. 47 ( 3 ) page: 321 - 335   2013.6

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    Authorship:Corresponding author   Language:English   Publisher:一般社団法人日本地球化学会  

    Geochemical mapping of <sup>87</sup>Sr/<sup>86</sup>Sr ratios in Shikoku Island and the Kii Peninsula of Southwest Japan was performed using 233 samples of stream sediments (<180 &mu;m). The spatial distribution of <sup>87</sup>Sr/<sup>86</sup>Sr ratios successively increases from northern to southern geological units, with a gap at the Median Tectonic Line (MTL). In the Inner Zone divided by the MTL, a zone with Cretaceous granitoid rocks of the Ryoke Belt and sedimentary rocks of the Izumi Group, the <sup>87</sup>Sr/<sup>86</sup>Sr ratios are measured at ~0.710. In the Outer Zone, a zone with Cretaceous metamorphic rocks of the Sanbagawa Belt and Jurassic to Miocene accretionary complexes of the Chichibu Belt and Shimanto Belts, the <sup>87</sup>Sr/<sup>86</sup>Sr ratios tend to fall in the range from 0.706 to 0.715, tend to increase from north to south, and are highest in the youngest accretionary complex of the Southern Shimanto Belt. The <sup>87</sup>Rb/<sup>86</sup>Sr-<sup>87</sup>Sr/<sup>86</sup>Sr plots for stream sediments more clearly reveal the differences and similarities of their bedrocks, such as the different trends among the stream sediments of the Inner and Outer Zones. Samples collected from the Inner Zone show almost the same <sup>87</sup>Rb/<sup>86</sup>Sr-<sup>87</sup>Sr/<sup>86</sup>Sr field as their source rocks, while most of the samples derived from accretionary complexes in the Outer Zone are plotted around a mixing line of older continental detritus and igneous-rock-derived materials. In light of the other geochemical characteristics observed, particularly the REE chemical features of the stream sediments and zircon ages in the basemental sedimentary rocks, the accretionary complexes in the Outer Zone may be mainly formed from the same source rocks, namely, igneous-rock-derived materials and continental detrital materials with different mixing ratios and a larger ratio of continental materials in the Southern Shimanto Belt. This study indicates that <sup>87</sup>Sr/<sup>86</sup>Sr ratios of stream sediments strongly reflect the isotopic composition of the source rocks and are very useful for distinguishing the various geological and geochemical settings of the source rocks.

    DOI: 10.2343/geochemj.2.0248

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  36. Long-term stability of fracture systems and their behaviour as flow paths in uplifting granitic rocks from the Japanese orogenic field

    Yoshida H., Metcalfe R., Ishibashi M., Minami M.

    GEOFLUIDS   Vol. 13 ( 1 ) page: 45 - 55   2013.2

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    DOI: 10.1111/gfl.12008

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  37. Constraint on radiocarbon age correction in Lake Biwa environment from the middle to late Holocene Reviewed

    Miyata Y., Minami M., Onbe S., Sakamoto M., Nakamura T., Imarnura M.

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 294   page: 452 - 458   2013.1

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    DOI: 10.1016/j.nimb.2012.09.027

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  38. Radiocarbon dating of VIRI bone samples using ultrafiltration

    Minami Masayo, Yamazaki Kana, Omori Takayuki, Nakamura Toshio

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 294   page: 240 - 245   2013.1

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    DOI: 10.1016/j.nimb.2012.06.016

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  39. エル・サルバドル共和国から出土した先スペイン期埋葬人骨の同位体分析 Reviewed

    南 雅代・市川 彰・坂田 健・森田 航・伊藤伸幸

    考古学と自然科学   Vol. 64   page: 1-25   2013

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  40. Small-mass AMS radiocarbon analysis at Nagoya University. Reviewed

    Minami, M., Kato, T., Miyata, Y., Nakamura, T. and Hua, Q.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B294   page: 91-96   2013

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    DOI: 10.1016/j.nimb.2012.02.036

  41. Ultrafiltration pretreatment for 14C dating of fossil bones from archaeological sites in Japan Reviewed

    Minami, M., Sakata, K., Takigami, M. and Nakamura, T.

    Radiocarbon   Vol. 55   page: 481-490   2013

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  42. Less impact of limestone bedrock on elemental concentrations in stream sediments -Case study of Akiyoshi area- Reviewed

    Ohta, A. and Minami, M.

    Bulletin of the Geological Survey of Japan   Vol. 64 ( 5/6 ) page: 121-138   2013

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  43. 骨試料の年代測定

    南 雅代

    フィッション・トラックニュースレター   Vol. 26   page: 76-79   2013

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  44. アミノ酸ラセミ化法を用いた骨遺物の年代決定 Invited

    南 雅代

    新学術領域研究ニュースレター   Vol. 2   page: 3-4   2013

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  45. Start on RICE-W (Radiocarbon Intercomparison on Chemical Experiments, Water series) project

    MInami Masayo, Aramaki Takafumi, Takahashi Hiroshi, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 60 ( 0 )   2013

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    DOI: 10.14862/geochemproc.60.0.101.0

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  46. Strontium isotope ratio (<sup>87</sup>Sr/<sup>86</sup>Sr) of stream sediments classified by particle size in Akiyoshi limestone area

    Jomori Yuka, Minami Masayo, Ohta Atsuyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 60 ( 0 )   2013

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    DOI: 10.14862/geochemproc.60.0.61.0

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  47. Seasonal variations of stable and radiocarbon isotope ratios for total carbon in PM<SUB>2.5</SUB> at Fukuoka city

    Soda Aoi, Ikemori Fumikazu, Higo Hayato, Nakajima Daisuke, Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 60 ( 0 )   2013

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    DOI: 10.14862/geochemproc.60.0.112.0

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  48. Freshwater reservoir effect at Lake Biwa: Effect of radiocarbon dating in archaeological samples

    Miyata Yoshiki, Aramaki Takafumi, Minami Masayo, Ohta Tomoko, Onbe Shin, Sakamoto Minoru, Imamura Mineo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 60 ( 0 )   2013

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    DOI: 10.14862/geochemproc.60.0.226.0

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  49. ストロンチウム同位体比を用いた過去の人類の移動の解明 Invited Reviewed

    南 雅代

    化学と教育   Vol. 60   page: 472-473   2012

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  50. 14C年代測定のための骨試料調製法

    南 雅代・坂田 健・市川 彰・伊藤伸幸

    名古屋大学加速器質量分析計業績報告書,   Vol. XXIII   page: 185-189   2012

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  51. 微少量グラファイト化ラインの検討.

    加藤ともみ・南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 76-85   2012

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  52. 北海道利尻島の泥炭湿地に飛来する鉛の供給源の変遷.

    河野麻希子・谷水雅治・浅原良浩・南 雅代・細野高啓・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 138-148   2012

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  53. アミノ酸組成ならびに14C年代に関する同一古人骨の部位による比較.

    坂田 健・瀧上 舞・南 雅代・中村俊夫・長岡朋人・平田和明

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 86-96   2012

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  54. 深部花崗岩中の透水性亀裂と充填鉱物-産状と形成プロセス-.

    吉田英一・石橋正祐紀・南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 54-56   2012

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  55. Radiocarbon dating of human skeletons of medieval archaelogical sites in Kamakura, Japan: were they killed by Nitta Yoshisada's attack on Kamakura in AD 1333? Reviewed

    Minami, M., Nakamura, T., Nagaoka, T. and Hirata, K.

    Radiocarbon   Vol. 54   page: 599-613   2012

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  56. <sup>14</sup>C dating human skeletons from medieval archaelogical sites in Kamakura, Japan: Were they victims of Nitta Yoshisada's attack?

    Minami M.

    Radiocarbon   Vol. 54 ( 3-4 ) page: 599 - 613   2012

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    DOI: 10.1017/s0033822200047287

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  57. C-14 DATING HUMAN SKELETONS FROM MEDIEVAL ARCHAELOGICAL SITES IN KAMAKURA, JAPAN: WERE THEY VICTIMS OF NITTA YOSHISADA'S ATTACK?

    Minami M., Nakamura T., Nagaoka T., Hirata K.

    RADIOCARBON   Vol. 54 ( 3-4 ) page: 599 - 613   2012

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  58. Strontium isotope ratios of rice -Relationship between the values of rice and geology of its growth-

    Hase Kazuma, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 )   2012

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    DOI: 10.14862/geochemproc.59.0.234.0

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  59. Difference of 14C age and 210Pb age of a peat core from Rishiri Island, northern Japan

    Kono Makiko, Minami Masayo, Tanimizu Masaharu, Asahara Yoshihiro, Hosono Takanori, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 )   2012

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    DOI: 10.14862/geochemproc.59.0.218.0

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  60. Spatial distribution of strontium isotope ratios (87Sr/86Sr) using stream sediments collected from Hokkaido, Japan

    Jomori Yuka, Minami Masayo, Ohta Atsuyuki, Imai Noboru

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 )   2012

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    DOI: 10.14862/geochemproc.59.0.60.0

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  61. The Analysis to Elucidate the Pathogenesis of Type 1 Long QT Syndrome using Disease-specific Induced Pluripotent Stem Cells

    MINAMI Masayo

    CHEMISTRY & EDUCATION   Vol. 60 ( 11 ) page: 472 - 473   2012

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    Publisher:The Chemical Society of Japan  

    DOI: 10.20665/kakyoshi.60.11_472

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  62. A new graphitization system for small-mass AMS-<SUP>14</SUP>C measurements at Nagoya University

    Kato Tomomi, Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 )   2012

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    DOI: 10.14862/geochemproc.59.0.132.0

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  63. Reconstruction of paleo diet in pottery excavated from coastal archaeological site at latter half of Jomon period.

    Miyata Yoshiki, Horiuchi Akiko, Nakamura Kentaro, Kuronuma Yasuko, Masuyama Takayuki, Minami Masayo, Nakamura Toshio, Evershed Richard

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 )   2012

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    DOI: 10.14862/geochemproc.59.0.333.0

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  64. Nationwide geochemical map of strontium isotope ratios using stream sediments -A basic data for determination of geographic origin of crops-

    Minami Masayo, Jomori Yuka, Hase Kazuma, Ohta Atsuyuki, Imai Noboru

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 59 ( 0 )   2012

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    DOI: 10.14862/geochemproc.59.0.331.0

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  65. Difference in radiocarbon ages of carbonized material from the inner and outer surfaces of pottery from a wetland archaeological site

    Miyata Yoshiki, Minami Masayo, Onbe Shin, Sakamoto Minoru, Matsuzaki Hiroyuki, Nakamura Toshio, Imamura Mineo

    PROCEEDINGS OF THE JAPAN ACADEMY SERIES B-PHYSICAL AND BIOLOGICAL SCIENCES   Vol. 87 ( 8 ) page: 518 - 528   2011.10

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    AMS (Accelerator Mass Spectrometry) radiocarbon dates for eight potsherds from a single piece of pottery from a wetland archaeological site indicated that charred material from the inner pottery surfaces (5052 &plusmn; 12 BP; <i>N</i> = 5) is about 90 <sup>14</sup>C years older than that from the outer surfaces (4961 &plusmn; 22 BP; <i>N</i> = 7). We considered three possible causes of this difference: the old wood effect, reservoir effects, and diagenesis. We concluded that differences in the radiocarbon ages between materials from the inner and outer surfaces of the same pot were caused either by the freshwater reservoir effect or by diagenesis. Moreover, we found that the radiocarbon ages of carbonized material on outer surfaces (soot) of pottery from other wetland archaeological sites were the same as the ages of material on inner surfaces (charred food) of the same pot within error, suggesting absence of freshwater reservoir effect or diagenesis.<BR><BR>(Communicated by Ikuo KUSHIRO, M.J.A.)

    DOI: 10.2183/pjab.87.518

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  66. Radiocarbon dating of carbonized material adhering to pottery -The difference of Carbon-14 age between inner and outer surface of the pottery in wetland archaeological site. Reviewed

    Miyata, Y., Minami, M., Onbe, S., Sakamoto, M., Nakamura, T. and Imamura, M.

    Proc. Japan Acad.   Vol. 87B   page: 518-528   2011

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  67. エル・サルバドル共和国出土人骨の14C年代とストロンチウム同位体比.

    南 雅代・坂田 健・市川 彰・伊藤伸幸

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 106-115   2011

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  68. 段階的加熱を用いた14C試料調製.

    南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 225-228   2011

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  69. 炭素・酸素同位体分析による実構造物中のコンクリートの中性化進行評価.

    浅原良浩・南 雅代・丸山一平・吉田英一・田中 剛名古屋大学加速器質量分析計業績報告書

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 140-151   2011

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  70. 里山からキツネが消えた日 −一匹のキツネのC・N・Sr同位体比測定−.

    鈴木和博・中村俊夫・南 雅代・池田晃子

    海洋化学研究   Vol. 24   page: 64-72   2011

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  71. 里山からキツネが消えた日−豊田市小手沢町の地蔵堂から見つかったキツネの遺骸−.

    鈴木和博・中村俊夫・南 雅代・池田晃子

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 121-134   2011

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  72. 14C測定による粗大枯死材の枯死年および分解速度の推定

    菱沼卓也・南 雅代・伊藤公一・大園享司

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 72-81   2011

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  73. 見かけ上の炭素年代差を用いた環境解析 −淡水湖産貝,骨試料を例として−.

    宮田佳樹・南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 49-54   2011

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  74. Reaction of silicate minerals with released CO<sub>2</sub> by inorganic precipitations of marine carbonate in sandstone

    MINAMI MASAYO, TANAKA TSUYOSHI, TAKEUCHI MAKOTO, MITO SAEKO

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 185 - 185   2011

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    <sup>87</sup>Sr/<sup>86</sup>Sr, &delta;<sup>18</sup>O and &delta;<sup>13</sup>C isotopes of carbonate in calcareous sandstone show intermediate values between marine carbonate and silicate phase of the sandstone. The <sup>87</sup>Sr/<sup>86</sup>Sr and &delta;<sup>18</sup>O isotopes indicate that these are the mixed ones of marine strontium and oxygen with those in silicate phase. Very little carbon is contained in the silicate phase and the &delta;<sup>13</sup>C value shows always that of marine. These data show conjunctive formations of the 1st-carbonate precipitation from seawater in the sandstone with 2nd-precipitation of carbonate by the quick reaction of silicates and the nascent carbon dioxide released at that time.

    DOI: 10.14862/geochemproc.58.0.185.0

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  75. Strontium isotope ratios of stream sediments in Chugoku areas

    Minami Masayo, Mori Kenta, Jyomori Yuka, Imai Noboru

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 380 - 380   2011

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    DOI: 10.14862/geochemproc.58.0.380.0

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  76. Quantitative evaluation and age determination of concrete carbonation with analysis of radiocarbon

    Asahara Yoshihiro, Minami Masayo, Maruyama Ippei, Yoshida Hidekazu

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 137 - 137   2011

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    DOI: 10.14862/geochemproc.58.0.137.0

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  77. History of atmospheric lead deposition to a peat bog in Rishiri Island, Hokkaido, over the past 5000 years

    Kono Makiko, Asahara Yoshihiro, Tanimizu Masaharu, Minami Masayo, Nakamura Toshio, Hosono Takahiro

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 114 - 114   2011

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    DOI: 10.14862/geochemproc.58.0.114.0

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  78. Reconstruction of paleo diet in pottery excavated from Hamanaka 2 archaeological site, Rebun island, Japan.

    Miyata Yoshiki, Horiuchi Akiko, Cramp Lucy, Minami Masayo, Nakamura Toshio, Evershed Richard

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 300 - 300   2011

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    DOI: 10.14862/geochemproc.58.0.300.0

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  79. Strontium isotope ratios (<sup>87</sup>Sr/<sup>86</sup>Sr) of size classified stream sediments

    Jomori Yuka, Minami Masayo, Suzuki Kazuhiro

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 58 ( 0 ) page: 314 - 314   2011

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    DOI: 10.14862/geochemproc.58.0.314.0

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  80. 骨の^<14>C年代測定 : 骨の化学分析からどのようなことがわかるか

    南 雅代

    化学と工業 = Chemistry and chemical industry   Vol. 63 ( 6 ) page: 478 - 480   2010.6

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    Publisher:日本化学会  

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  81. Comparison of delta C-13 and C-14 activities of CO2 samples combusted in closed-tube and elemental-analyzer systems

    Minami Masayo, Goto Akiko S., Omori Takayuki, Ohta Tomoko, Nakamura Toshio

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 268 ( 7-8 ) page: 914 - 918   2010.4

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    DOI: 10.1016/j.nimb.2009.10.063

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  82. Radiocarbon dating of charred human bone remains preserved in urns excavated from medieval Buddhist cemetery in Japan

    Nakamura Toshio, Sagawa Shinichi, Yamada Tetsuya, Kanehara Masaaki, Tsuchimoto Norio, Minami Masayo, Omori Takayuki, Okuno Mitsuru, Ohta Tomoko

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 268 ( 7-8 ) page: 985 - 989   2010.4

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    DOI: 10.1016/j.nimb.2009.10.080

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    Scopus

  83. Radiocarbon dating of charred human-bone remains preserved in urns excavated from medieval Buddhist cemetery in Japan. Reviewed

    Nakamura, T., Sagawa, S., Yamada, T., Kanehara, M., Tsuchimoto, N., Minami, M., Omori, T., Okuno and M., Ohta, T.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B268   page: 985-989   2010

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  84. A first step toward small-mass AMS radiocarbon analysis at Nagoya University.

    Minami, M., Miyata, Y., Nakamura, T., Hua, Q.

        page: 57-60   2010

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  85. エル・サルバドル共和国出土人骨のストロンチウム同位体比

    南 雅代・市川 彰・坂田 健・森田 航・伊藤伸幸

    古代メソアメリカの考古資料を用いた学術的発展研究(平成21年度総長裁量経費報告書)     page: 23-30   2010

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  86. 少量炭素試料のAMS 14C分析に向けて.

    南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 166-170   2010

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  87. 放射性炭素を用いたコンクリートの中性化時期の推定.

    浅原良浩・南 雅代・丸山一平・吉田英一・田中 剛名古屋大学加速器質量分析計業績報告書

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 53-60   2010

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  88. 貝の炭素年代測定値が示す意味.

    宮田佳樹・南 雅代・松崎浩之・西本豊弘・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 32-39   2010

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  89. 限外濾過調製法を用いた骨ゼラチンの14C年代測定.

    山崎香奈・南 雅代・大森貴之・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 100-112   2010

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  90. 同位体分析による実構造物中のコンクリートの中性化進行評価の試み. Reviewed

    丸山一平・淺原良浩・南 雅代・吉田英一

    セメントコンクリート論文集   Vol. 64   page: 139-146   2010

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  91. CHIME geochronology of granitic gneiss from Baekdong in the Hongseong area of the Gyeonggi Massif, South Korea. Reviewed

    Suzuki, K., Chwae, U., Dunkley, D.J., Kim, S-W., Kajizuka, I. and Minami, M.

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 57   page: 19-41   2010

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  92. Geochemical map: An essential national inventory map

    TANAKA TSUYOSHI, YAMAMOTO KOSHI, MINAMI MASAYO, MIMURA KOICHI, ASAHARA YOSHIHIRO, YOSHIDA HIDEKAZU, TAKEUCHI MAKOTO

    Annual Meeting of the Geological Society of Japan   Vol. 2010 ( 0 ) page: 543 - 543   2010

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    Publisher:The Geological Society of Japan  

    DOI: 10.14863/geosocabst.2010.0.543.0

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  93. Origin of clastics suggested by distribution of CHIME ages of Zircon from sandstones in the Shimanto Belt

    Jyomori Yuka, Minami Masayo, Suzuki Kazuhiro, Takeuchi Makoto

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 57 ( 0 ) page: 277 - 277   2010

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    DOI: 10.14862/geochemproc.57.0.277.0

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  94. EVALUATION OF CARBONATION PROCESS IN CONCRETE WITH AN ANALYSIS OF CARBON ISOTOPES

    MARUYAMA Ippei, ASAHARA Yoshihiro, MINAMI Masayo, YOSHIDA Hidekazu

    Cement Science and Concrete Technology   Vol. 64 ( 1 ) page: 139 - 146   2010

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    Publisher:Japan Cement Association  

    Radiocarbon method has been applied to concrete in order to estimate progression and age of carbonation in concrete. Concrete cores from a building constructed in 1967 on the campus of Nagoya University, Japan, were collected in 2008, and were investigated for <sup>14</sup>C, δ<sup>13</sup>C, and carbon content. The amount of carbon dioxide was 8% at the concrete surface where the concrete is highly carbonated, decreasing with depth, and was 1% at the depth where carbonation is hardly observed. The measured <sup>14</sup>C values were 144 to 148pMC at the carbonated surface and 71 to 82pMC at the depth of less carbonation, decreasing from the surface down to the depth. These profiles can be interpreted as the following:(1)The age of carbonation in the concrete can be estimated by the variation of <sup>14</sup>C and carbon concentrations, coupled with atmospheric <sup>14</sup>C value at 1967(~170pMC:Hua and Barbetti, 2004)and the present one(~100pMC). Most part of CO<sub>2</sub> in the surface concrete is estimated to be absorbed and fixed in ten years after construction.(2)The deeper part of the concrete also contains small amount of atmospheric CO<sub>2</sub>, which is 43 to 78% of CO<sub>2</sub> in the deeper part. However, δ<sup>13</sup>CPDB value in the deeper part is -25 to -21‰, and is significantly lower than those of atmospheric CO<sub>2</sub>(δ<sup>13</sup>C&cong;8‰)and marine sedimentary limestones with geological ages(δ<sup>13</sup>C&cong;0‰). Carbon isotope compositions, <sup>14</sup>C and δ<sup>13</sup>C, in the deeper part of concrete cannot be explained by a simple mixing of the two components. There are two possible causes of the lowest δ<sup>13</sup>C value:material originating from cements and/or concrete, and direct absorption of atmospheric CO<sub>2</sub> by high-pH cement solutions with kinetic effects in the high-pH zone.

    DOI: 10.14250/cement.64.139

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  95. Elemental migration in concrete during carbonation process

    Minami Masayo, Yoshida Hidekazu, Asahara Yoshihiro, Maruyama Ippei

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 57 ( 0 ) page: 35 - 35   2010

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    DOI: 10.14862/geochemproc.57.0.35.0

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  96. Reconstruction of paleo diet from pottery by TOF-SIMS

    Miyata Yoshiki, Saito Kaori, Horiuchi Akiko, Minami Masayo, Kamijo Nobuhiko, Fukushima Kazuhiko, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 57 ( 0 ) page: 147 - 147   2010

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    DOI: 10.14862/geochemproc.57.0.147.0

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  97. Temporal as well as Spatial Variations of <sup>14</sup>C Concentrations in Environmental Samples: <sup>14</sup>C Fixed in Plant Materials (2)

    Nakamura Toshio, Ohta Tomoko, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 57 ( 0 ) page: 167 - 167   2010

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    DOI: 10.14862/geochemproc.57.0.167.0

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  98. 石灰岩質砂岩の炭素14を指標とする風化評価-コンクリートのナチュラルアナログ研究として-

    南 雅代・池田晃子・吉田英一

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 71-80   2009

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  99. Comparison of δ13C and 14C activities of CO2 samples combusted in closed-tube and elemental-analyzer systems. Reviewed

    Minami, M., Goto, S. A., Omori, T., Ohta, T. and Nakamura, T.

    Nucl. Instr. and Meth. in Phys. Res.     page: doi: 10.1016/j.nimb.2009.10.063   2009

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  100. 封管法で微量のシュウ酸をガス化した場合のガス組成

    後藤(桜井)晶子・南 雅代・三村耕一

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 152-155   2009

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  101. 琵琶湖の淡水リザーバー効果に関する研究

    宮田佳樹・南 雅代・遠部 慎・坂本 稔・今村峯雄

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 112-116   2009

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  102. Areal distribution of strontium isotopic ratios of stream sediments in Kyushu and Shikoku areas

    Jyomori Yuka, Minami Masayo, Goto Akiko, Imai Noboru

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 210 - 210   2009

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    DOI: 10.14862/geochemproc.56.0.210.0

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  103. Environment change to estimate from tree-ring cellulose of Japanese pine at Nagoya.

    hayashi kazuki, minami masayo, nakamura tosio, nakatsuka takeshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 129 - 129   2009

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    DOI: 10.14862/geochemproc.56.0.129.0

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  104. Regional geochemistry of the east Aichi and the south Gifu areas

    TANAKA TSUYOSHI, YAMAMOTO KOUSI, MINAMI MASAYO, Mimura Koichi, Asahara Yoshihiro, Yoshida Hidekazu, Takeuchi Makoto

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 205 - 205   2009

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    DOI: 10.14862/geochemproc.56.0.205.0

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  105. Weathering assessment of calcareous sandstone using radiocarbon -A natural analogue study for weathering of concrete construction-

    Minami Masayo, Yoshida Hidekazu, Tanaka Tsuyoshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 259 - 259   2009

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    DOI: 10.14862/geochemproc.56.0.259.0

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  106. Application of radiogenic <sup>14</sup>C to quantitative evaluation of concrete degradation

    ASAHARA Yoshihiro, MINAMI Masayo, MARUYAMA Ippei, YOSHIDA Hidekazu, TANAKA Tsuyoshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 56 ( 0 ) page: 63 - 63   2009

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    DOI: 10.14862/geochemproc.56.0.63.0

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  107. Strontium Isotope Analysis using Resonance Ionization Mass Spectrometry for Determination of Bone Origin

    Sasada Seiji, Watanabe Kenichi, Higuchi Yuki, Tomita Hideki, Goto Akiko, Minami Masayo, Suzuki Kazuhiro, Kato Takenori, Hasegawa Takuya, Kawarabayashi Jun, Iguchi Tetsuo

    JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY   Vol. 45   page: 97 - 100   2008.9

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    Publisher:Journal of Nuclear Science and Technology  

    DOI: 10.1080/00223131.2008.10875986

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  108. Summaries of "free discussion on Future view of the Center for Chronological Research" and "result of a questionnaire about convenience of the Accelerator mass Spectrometer facility in collaborated research(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    MINAMI Masayo

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 169 - 173   2008.3

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    DOI: 10.18999/sumrua.19.169

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  109. ^<14>C abundances : An index for weathering of concrete construction(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    Tanaka Tsuyoshi, Minami Masayo, Yoshida Hidekazu, Yoshida Shizuo

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 66 - 72   2008.3

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    ^<14>C abundances are measured across a weathering rind formed in Triassic calcareous sandstone. ^<14>C has not been detected by our sensitive AMS in the fresh sandstone, while about a half amount of the present ^<14>C is detected in the weathering rind of the sandstone. 14C is found to be a sensitive index of concrete weathering. The fresh concrete made from natural limestone does not contain any ^<14>C. Weathering in atmospheric condition will replace the dead carbon in the concrete with radiogenic ^<14>C and will be able to detect easily.

    DOI: 10.18999/sumrua.19.66

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  110. Reconstruction of climatic changes using δ^<13>C variations of annual tree-ring celluloses of a Japanese pine tree from Nagoya(Summaries of Research Using AMS)

    HAYASHI Kazuki, MINAMI Masayo

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 175 - 183   2008.3

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    We investigated the relationships between climatic factors and annual tree-ring data such as stable carbon isotopic composition and tree-ring width of a Japanese pine tree (Pinus thunbergii) with annual rings from 1955 to 2002, which was collected at the site of Environmental Studies Hall in Nagoya University. The climatic factors used are: month total values of sunshine duration and precipitation, month average values of day average temperature, relative humidity and vapor pressure in the Nagoya area. The annual rings of the sample are very wide in the periods from 1960-1970. This remarkable growth might be related with the local environment changes not with the regional environment changes because the annual-ring width shows no correlation with the climatic factors. The δ^<13>C fluctuations of the annual rings in the period from 1955 to 1979 are different from those in the period from 1980 to 2002. The result shows the change factors of δ^<13>C values in the two periods are different. In the period from 1955 to 1979, no-climatic environmental factors, that is, artificial factors such as air pollution effect the δ^<13>C fluctuations because they are not related with the climatic factors. In the period from 1980 to 2002, on the other hand, the month average values of relative humidity are good correlative with the δ^<13>C fluctuations of earlywood and latewood fractions, relatively.

    DOI: 10.18999/sumrua.19.175

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  111. Preliminary report of monitoring of vibration caused by earthquake-proof construction of Furukawa Memorial Hall(Summaries of Research Using AMS)

    IKEDA Akiko, KATO Takenori, NAKAMURA Toshio, MINAMI Masayo, KUDO Yuichiro

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 190 - 193   2008.3

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    Furukawa Memorial Hall is now under earthquake-proof construction and we are performing measurement of vibration caused by the construction to evaluate the influence given to a Tandetron Accelerator Mass Spectrometer and two CHIME machines installed in Furukawa Memorial Hall. In this report we described about the monitoring points of vibration and measurement equipments used for vibration measurement.

    DOI: 10.18999/sumrua.19.190

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  112. Status and applications of Tandetron AMS system-II at Nagoya University in 2007(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    NAKAMURA Toshio, MINAMI Masayo, ODA Hirotaka, KUDO Yuichiro, IKEDA Akiko, OMORI Takayuki, NISHIMOTO Hiroshi, HAYASHI Kazuki, OHTA Tomoko, NISHIDA Masami, SUYA Tokunori, SEKINO Tatsuya

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 39 - 45   2008.3

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    A second ^<14>C-AMS system (Model 4130-AMS), built by High Voltage Engineering Europe (HVEE), B.V., The Netherlands, was delivered to Nagoya University in 1996/97. Acceptance tests were completed in January of 1999, and routine measurements began in mid-2000. Since completion of the acceptance tests in early 1999, we have encountered a lot of troubles with the machine, particularly in 2002. Since the end of 2002, the machine has relatively worked well, expect for minor problems. However, since June in 2006, we had a serious problem with the high voltage generation system. We opened the accelerator tank twice, in October of 2006 and July of 2007, and replaced each time totally 154 diodes and 5 resistors, 230 diodes and 5 resistors, respectively, for the high-voltage generator system used to rectify the AC power source and stabilize the DC current. Thus the number of targets measured was 1384 in 2007, which was almost the two-third of that in normal year. We also encountered troubles with (1) spark-oriented damage of a high voltage controller module, (2) a cooling system of the power generator for the analyzing magnets both for high energy and low energy beams. The cooling-water flow for the power generator was disturbed by chemical deposits in water tubes, and was not plenty enough to cool down the generator. A thermo-switch stopped the generator for safety and thus we could not operate the analyzing magnets. We replaced the damaged tubes to new ones. This trouble also limited the number of targets measured. Since November 1^<st>, 2007, we had a scheduled shutdown of the AMS system, owing to the improvements of the building, Furukawa Memorial Hall, against earthquake invasion expected in near future around Tokai area, central Japan, In April of 2008, we will start ^<14>C measurements again, possibly in a new good condition of the building.

    DOI: 10.18999/sumrua.19.39

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  113. Variations of δ^<13>C, δ^<15>N values and 14C ages in human bone sections(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    TAKIGAMI Mai, MINAMI Masayo, NAKAMURA Toshio

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 117 - 126   2008.3

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    Prehistrical human bone is used for ^<14>C dating and isotope palaeodietary analysis. Fossil bone tends to be suffered from exogenous contaminants and diagenetic alteration during burial, especially in tropical and wet areas, and the state of bone collagen preservation differs with each bone sample. Since bone sections in an individual have different internal structures, such as density, thickness, amount of spongins and compact bone, different sections could have various levels of diagenesis. In this study, we investigated whether collagen extracted from different sections of an individual has variations of C/N ratios, δ^<13>C and δ^<15>N values for different sections of an individual, and whether we can estimate its palaeodietary by analyzing one bone section of a whole individual. The samples used are eleven bone sections (cranium, sphenoid, tooth, rib, humerus, radius or ulna, the lower femur, the central femur, tibia and two back-bones) in an individual, nine sections in another, and seven sections in the other, collected from the Yuigahama-minami archealogical site, Kamakura, Japan. The surface of fossil samples were shaved and ultrasonicated repeatedly in distilled water, followed by HCl and NaOH treatments; then samples were lyophilized and pulverized. The powdered bone sample was treated with 0.6M-HCl in a cellulose tube in a beaker over 20h at 4℃. The decalcified bone sample was treated by 0.6M-NaOH followed by 1.2M-HCl and 0.6M-HCl. Gelatin was extracted from acid/alkali-insoluble residue by heating in distilled water for 12h at 80-90℃. Combusted gelatin was refined into N_2 and CO_2. These gases were used for carbon and nitrogen isotopic measurement by using an isotope ratio mass spectrometer (Finnigan, MAT252). Gelatin was wrapped into a Sn cup and measured for C/N ratios by using an elemental analyzer (Euro Vector, Euro EA3000). To estimate sample preparation-induced variation, seven gelatins were extracted from a bone section, and each measured for C/N ratios, δ^<13>C and δ^<15>N values. The deviations of δ^<13>C and δ^<15>N values for seven gelatins are ±0.1‰ and ±0.2‰, respectively. Most bone sections have gelatin yield of more than 0.7 wt%, and carbon yield of the combusted gelatin between 42 and 46 wt%. Bone with more than 0.7 wt% gelatin is generally well preserved, and collagens with around 40 wt% C are intact. The bone samples in this study, therefore, are well preserved and regarded as suitable for analysis. The C/N ratios of gelatins varied from 3.1 to 3.4 with different sections in an individual. The values show quality of the gelatin extractions because the good collagens have C/N ratios between 2.9 and 3.6. The δ^<13>C values of gelatins have variations of about 1‰, between -19.3 and -18.2‰, for different bone sections in an individual. The other two individuals have variations between -19.3 and -18.4‰, and -18.3 and -17.7‰. The δ^<15>N values have variations of about 1.5‰ (12.6〜14.0‰, 12.4〜13.1‰ and 12.6〜14.1‰, respectively) for different sections of each individual. There is a positive correlation between δ^<13>C and δ^<15>N values. The back-bones tend to have highest values, and the rib and tooth have a little higher values than the others. ^<14>C ages have no variation in different sections. It means exterior organic substance don't get mixed in gelatin.

    DOI: 10.18999/sumrua.19.117

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  114. The place name 'Umi' in Kamiyahagi of Ena City originated from the damming by a landslide triggered by Tensho Earthquake in 1586(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    Suzuki Kazuhiro, Nakamurai Toshio, Kato Takenori, Ikeda Akiko, Goto Akiko, Oda Hirotaka, Minami Masayo, Kamikubo Hiroshi, Kajizuka Izumi, Adachi Kaori, Tsuboi Motohiro, Tokiwa Tetsuya, Oota Tomoko, Nishida Masami, Esaka Naoko, Tanaka Atsuko, Mori Shinobu, Dunkley Daniel J., Kusiak Monika A., Suzuki Satoko, Niu Etsuko, Nakazaki Mineko, Senda Ryoko, Kanagawa Kazuyo, Kumazawa Hiroyo

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 26 - 38   2008.3

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    Umi is located along the Kamimura River within the Kamiyahagi area of southeastern Ena City, Gifu Prefecture. The name 'Umi' means sea or large lake; however, there are no lakes in the mountainous Kamiyahagi area. The Tokai Gou (torrential rain) flood of September 11-12, 2000 destroyed embankments along the river, and exposed sedimentary layers that are typical of a lacustrine depositional setting. This confirms the existence of a paleo-lake from which the name Umi originated. The ^<14>C ages, ranging from 280±37 to 345±25 BP, appear to be contemporaneous with Tensho Earthquake that occurred in central Japan on January 18, 1586.

    DOI: 10.18999/sumrua.19.26

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  115. Carbon isotopic fractionation during sample combustion and CO_2 purification : Comparison of δ^<13>C measured values between closed tube- and elemental analyzer-combusted samples(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    Minami Masayo, Ohta Tomoko, Omori Takayuki, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 160 - 168   2008.3

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    For combustion of samples a closed tube-combustion (CTC) method has been generally and widely used until now, but this method takes much time and labor. Recently we have investigated a CO_2 production and purification system using a commercial elemental analyzer (EA) connected to cryogenic traps, which enables fast combustion and CO_2 purification of samples. We compared δ^<13>C values between closed tube- and elemental analyzer-combusted samples of Oxalic Acid-II (new oxalic acid standard distributed by NIST; SRM4990c) and almost ^<14>C-free oxalic acid (Kishida[○!R]). For the CTC method δ^<13>C measured values tend to increase as sample amount is small relative to CuO amount. This might be due to absorption of more ^<12>C than ^<13>C to an inner wall of Pyrex tube and/or CuO. Furthermore, different δ^<13>C is observed by addition of Sulfix[○!R] to small amount of CO_2. δ^<13>C values measured by the EA method show good agreement with the results using the CTC method, and sample preparation background of ^<14>C is higher in the CTC method than the EA method, suggesting that this newly developed EA system shows high precision and accuracy. However, more detailed study and improvement on the EA system will be needed for different amounts of various standards such as IAEA standards.

    DOI: 10.18999/sumrua.19.160

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  116. Is ^<14>C concentration higher for plants growing at high altitude Tibetan Plateau than those at the sea level?(Proceedings of the 20^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2007)

    NAKAMURA Toshio, WATANABE Takahiro, MATSUNAKA Tetsuya, NISHIMURA Mitsugu, ZHU Liping, OHTA Tomoko, MINAMI Masayo

    Summaries of Researches using AMS at Nagoya University   ( 19 ) page: 110 - 116   2008.3

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    To answer a question whether ^<14>C concentration is higher for plants growing at high altitude locations than those growing at the sea level, we recently have collected plants samples from four sites at different altitudes: (1) plants from Lake Pumayum area at the altitude of 5030m; (2) plant samples from the suburbs of Lhasa city at the altitude of 4000m; (3) needle leaves from pine tree at 2600m-high location of Mt. Fuji; and (4) needle leaves from pine trees growing in the Higashiyama Campus of Nagoya University. The plant samples were rinsed with distilled water, treated chemically by an acid- alkali-acid treatment, and finally dried in an electric oven. A part of the samples were combusted to produce CO_2 and the produced CO_2 was changed to graphite for ^<14>C measurements with an AMS ^<14>C system at Nagoya University. The measured ^<14>C concentration was given in a ratio of sample ^<14>C/^<12>C to that of standard. For both sample and standard, isotopic fractionation was corrected. In addition, the decrease of ^<14>C concentration by radioactive decay for a standard from AD1950 to the year of sample collection was also corrected. ^<14>C concentrations were highest for the plant samples from Lake Pumayum showing a value of 1.081±0.016 in average, followed by the values of 1.055±0.005 for plants near Lhasa city, the values of 1.051±0,002 for plants from Mt. Fuji, and finally 1.017±0.003 for pine needles from Nagoya University. This clear altitude dependence may be explained preferably by Suess effect that is a dilution effect of modern ^<14>C concentration with dead carbon, containing no ^<14>C, produced by combustion of fossil fuel. The estimated altitude dependence of ^<14>C atom production is not strong and the resulting altitude dependence of ^<14>C concentration of CO_2 can fade out quickly by the strong air-mass mixing in the troposphere.

    DOI: 10.18999/sumrua.19.110

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  117. Strontium isotope analysis using Resonance Ionization Mass Spectrometry for determination of bone origin. Reviewed

    Sasada, S., Watanabe, K., Higuchi, Y., Tomita, H., Goto, A., Minami, M., Suzuki, K., Kato, T., Hasegawa, T., Kawarabayashi, J. and Iguchi, T.

    Journal of Nuclear Science and Technology   Vol. 5   page: 97-100   2008

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  118. 古人骨の同一個体内における部位の違いによるδ13C・δ15N値、14C年代の相違の有無

    瀧上 舞・南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIX   page: 117-126   2008

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  119. コンクリート風化の超長時間評価を目的とする石灰岩質砂岩地層の14C存在度変化

    田中 剛・南 雅代・吉田英一・吉田鎮男

    名古屋大学加速器質量分析計業績報告書   Vol. XIX   page: 117-126   2008

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  120. 試料燃焼-二酸化炭素精製における炭素同位体比分別 -封管法と元素分析計による試料調製の違い-

    南 雅代・太田友子・大森貴之・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 160-168   2008

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  121. Areal distribution of strontium isotopic ratios of stream sediments in north and central Kyushu area

    Goto Akiko, Minami Masayo, Asahara Yoshihiro

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 55 ( 0 ) page: 382 - 382   2008

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    DOI: 10.14862/geochemproc.55.0.382.0

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  122. Radiocarbon ages of medieval human skeletons excavated from the Yuigahama archaeological site, Kamakura, Japan

    Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 55 ( 0 ) page: 325 - 325   2008

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    DOI: 10.14862/geochemproc.55.0.325.0

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  123. Diverse microstructures from Archaean chert from the mount goldsworthy-mount grant area, pilbara craton, western australia: Microfossils, dubiofossils, or pseudofossils?

    Sugitani Kenichiro, Grey Kathleen, Allwood Abigail, Nagaoka Tsutomu, Mimura Koichi, Minami Masayo, Marshall Craig P., Van Kranendonk Martin J., Walter Malcolm R.

    PRECAMBRIAN RESEARCH   Vol. 158 ( 3-4 ) page: 228 - 262   2007.10

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    DOI: 10.1016/j.precamres.2007.03.006

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  124. Radiocarbon and C-13 variations during the last 300 years in lacustrine sediments of Lake Biwa, central Japan

    Minami M., Tane N., Nakamura T.

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 71 ( 15 ) page: A669 - A669   2007.8

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  125. Estimation of paleotemperature from racernization of aspartic acid in combination with radiocarbon age Reviewed

    Masayo Minami, Masami Takeyama, Koichi Mimura, Toshio Nakamura

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 259 ( 1 ) page: 547 - 551   2007.6

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    We tried to estimate paleotemperatures from two chosen fossils by measuring D/L aspartic acid ratios and radiocarbon ages of the XAD-2-treated hydrolysate fractions in the fossils. The D/L aspartic acid ratio was measured with a gas chromatograph and radiocarbon dating was performed using a Tandetron AMS system at Nagoya University. The radiocarbon age of a fossil mammoth molar collected from Bykovsky Peninsula, eastern Siberia, was found to be 35,170 +/- 300 BP as an average value for the XAD-treated hydrolysate fractions. The aspartic acid in the mammoth molar showed a little evidence of racemization, which might be due to in vivo racemization during the lifetime and then suggests negligible or no postmortem racemization during burial in permafrost. From four animal bone fossils collected from a shell mound excavated at the Awazu submarine archeological site in Lake Biwa, Shiga, Japan, the racemization-based effective mean temperature was calculated to be 15-16 degrees C using the D/L aspartic acid ratio of about 0.11 and the C-14 age of 4500 BP for the XAD-2-treated hydrolysate fractions in the fossils. The average annual temperature was estimated to be 11-12 degrees C, which approximates to the temperature that the fossils experienced during burial at the site. Although the application of racemization ratios in fossils as paleotemperature indicators is surrounded with many difficulties, the results obtained in this study suggest its feasibility. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2007.01.201

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  126. Marine reservoir effect deduced from C-14 dates on marine shells and terrestrial remains at archeological sites in Japan Reviewed

    Toshio Nakamura, Iwao Nishida, Hideki Takada, Mitsuru Okuno, Masayo Minami, Hirotaka Oda

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 259 ( 1 ) page: 453 - 459   2007.6

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    Paired marine and terrestrial samples were collected at archeological shell mounds in Kagoshima, Saga and Aichi prefectures and selected from sediment samples bored at the Mawaki archeological site in Ishikawa prefecture, to evaluate the local marine reservoir effect in Japan. The local reservoir corrections, Delta R, were evaluated to be 8 +/- 110 and - 178 +/- 113 C-14 years for Miyasaka shell mound, - 125 +/- 50 to -45 +/- 49 and -86 +/- 48 to -21 +/- 50 C-14 years for Higashimyo shell mound, -46 +/- 52, 40 +/- 44, -136 +/- 44 and 100 + 44 14C years for Yoshigo shell mound, -255 +/- 38 and - 146 +/- 46 C-14 years for Kuzubasama shell mound, -71 +/- 33, -30 +/- 85 and -78 +/- 74 C-14 years on average for C4, C5 and C6 cores, respectively, from the Mawaki site. The existing data along with the present results suggest that the Delta R values obtained for central to southern part of Japan are consistent with zero or a bit negative, but are different from the Delta R values of 200 to 500 C-14 years for the northern parts of the Japanese archipelago. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2007.01.186

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  127. High precision C-14 measurements and wiggle-match dating of tree rings at Nagoya University Reviewed

    Toshio Nakamura, Hiroko Miyahara, Kimiaki Masuda, Hiroaki Menjo, Kohsuke Kuwana, Katsuhiko Kimura, Mitsuru Okuno, Masayo Minami, Hirotaka Oda, Andrzej Rakowski, Tomoko Ohta, Akiko Ikeda, Etsuko Niu

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 259 ( 1 ) page: 408 - 413   2007.6

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    An AMS system dedicated to C-14 measurement (486-AMS) built by HVEE BN. The Netherlands, was delivered to Nagoya University in 1996, and is in use for routine C-14 measurements. The relative error of the standard deviation (1 sigma) of C-14/C-12 ratios is 10.3% to +/- 0.5% (somewhat larger than the uncertainty of +/- 03% from C-14 counting statistics) and that of the corresponding C-13/C-12 ratios is +/- 0.03% to +/- 0.07%, as measured for HOxII standards. By using this AMS system, we are now testing whether the recommended IntCa104 C-14 calibration data set is consistent with the natural C-14-concentration variations as recorded in Japanese trees. Here we report the results of these consistency tests and accurate age determination of tree rings grown in Japan, using the C-14 wiggle matching technique. (c) 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.nimb.2007.02.005

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  128. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part1)

    Minami Masayo, Terui Atsushi, Takaoka Nobuo, Nakamura Toshio

    名古屋大学加速器質量分析計業績報告書   ( 18 ) page: 55 - 55   2007.3

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    第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告<第1部> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall

    DOI: 10.18999/sumrua.18.55

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  129. Estimation of paleotemperature from racemization of aspartic acid in combination with radiocarbon age(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,POSTER SESSION)

    MINAMI Masayo, TAKEYAMA Masami, MURANAKA Yasushi, NAKAMURA Toshio

    名古屋大学加速器質量分析計業績報告書   ( 18 ) page: 83 - 83   2007.3

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    第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告<POSTER SESSION> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall

    DOI: 10.18999/sumrua.18.83

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  130. Diurnal variation of CO_2 concentration, Δ^<14>C and δ^<13>C in an urban forest : Estimate of the anthropogenic and biogenic CO_2 contributions(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part1)

    TAKAHASHI HIROSHI A., KONOHIRA EIICHI, HIYAMA TETSUYA, MINAMI MASAYO, NAKAMURA TOSHIO, YOSHIDA NAOHIRO

    名古屋大学加速器質量分析計業績報告書   ( 18 ) page: 53 - 53   2007.3

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    第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告<第1部> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall

    DOI: 10.18999/sumrua.18.53

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  131. Present Status of AMS ^<14>C facility of Nagoya University and its applications to archeology and geology(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part1)

    NAKAMURA Toshio, MINAMI Masayo, ODA Hirotaka, IKEAD Akiko, WATANABE Takahiro, MIYAHARA Hiroko, OHTA Tomoko, YOSHIOKA Shigeo, NISHIDA Masami

    名古屋大学加速器質量分析計業績報告書   ( 18 ) page: 31 - 32   2007.3

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    第19回名古屋大学年代測定総合研究センターシンポジウム平成18(2006)年度報告<第1部> Proceedings of the 19th symposiumon on Chronological Studies at the Nagoya University Center for Chronological Research\in 2006 日時:平成19 (2007)年1月15日(月)~17日(水) 会場:名古屋大学シンポジオン Date:January15th-17th, 2007 Venue:Nagoya Uhiversity Symposion Hall

    DOI: 10.18999/sumrua.18.31

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  132. Status and applications of Tandetron AMS system-II at Nagoya University in 2006(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part 2)

    NAKAMURA Toshio, MINAMI Masayo, ODA Hirotaka, IKEDA Akiko, WATANABE Takahiro, MIYAHARA Hiroko, OHTA Tomoko, YOSHIOKA Shigeo, NISHIDA Masami

    Summaries of Researches using AMS at Nagoya University   ( 18 ) page: 91 - 97   2007.3

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    A second ^<14>C-AMS system (Model 4130-AMS), built by High Voltage Engineering Europe (HVEE), B.V, The Netherlands, was delivered to Nagoya University in 1996/97. Acceptance tests were completed in January of 1999, and routine measurements began in mid-2000. Since completion of the acceptance tests in early 1999, we have encountered a lot of troubles with the machine, in particular in 2002 (see Fig.1). Since 2002, the machine has relatively worked well, expect for minor problems. However, it should be stressed that even a minor malfunction, ^<14>C measurements are not possible with the system. In fact, the AMS machine was in good condition in the early half of 2006. However, since June in 2006, we had a serious problem with the high voltage generation system. We opened the accelerator tank in October and replaced totally 154 diodes and 5 resistors for the high-voltage generator system used to rectify the AC power source and stabilize the DC current. Thus the number of targets measured was 1115 in 2006, which is almost the half of that in normal year. We also encountered a trouble with a cooling system of the power generator for the analyzing magnets both for high energy and low energy beams. The cooling-water flow for the power generator was disturbed by chemical deposits in the water tube, and was not enough to cool down the generator. Thermo-switch stopped the generator for safety and thus we could not operate the analyzing magnets. We replaced the damaged tubes to new ones. This trouble also limited the number of targets measured.

    DOI: 10.18999/sumrua.18.91

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  133. Variations of C/N ratios, δ^<13>C and δ^<15>N values in human bone sections(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,POSTER SESSION)

    TAKIGAMI Mai, MINAMI Masayo, NAKAMURA Toshio

    Summaries of Researches using AMS at Nagoya University   ( 18 ) page: 73 - 82   2007.3

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    Prehistrical human bone is used for ^<14>C dating and isotope palaeodietary analysis. Fossil bone tends to be suffered from exogenous contaminants and diagenetic alteration during burial, especially in tropical and wet areas, and the state of bone collagen preservation differs with each bone sample. Since bone sections in an individual have different internal structures, such as density, thickness, amount of spongins and compact bone, different sections could have various levels of diagenesis. In this study, we investigated whether collagen extracted from different sections of an individual has variations of C/N ratios, δ^<13>C and δ^<15>N values for different sections of an individual, and whether we can estimate its palaeodietary by analyzing one bone section of a whole individual. The samples used are eleven bone sections (cranium, sphenoid, tooth, rib, humerus, radius or ulna, the lower femur, the central femur, tibia and two back-bones) in an individual, nine sections in another, and seven sections in the other, collected from the Yuigahama-minami archealogical site, Kamakura, Japan. The surface of fossil samples were shaved and ultrasonicated repeatedly in distilled water, followed by HCl and NaOH treatments; then samples were lyophilized and pulverized. The powdered bone sample was treated with 0.6M-HCl in a cellulose tube in a beaker over 20h at 4℃. The decalcified bone sample was treated by 0.6M-NaOH followed by 1.2M-HCl and 0.6M-HCl. Gelatin was extracted from acid/alkali-insoluble residue by heating in distilled water for 12h at 80-90℃. Combusted gelatin was refined into N_2 and CO_2. These gases were used for carbon and nitrogen isotopic measurement by using an isotope ratio mass spectrometer (Finnigan, MAT252). Gelatin was wrapped into a Sn cup and measured for C/N ratios by using an elemental analyzer (Euro Vector, Euro EA 3000). To estimate sample preparation-induced variation, seven gelatins were extracted from a bone section, and each measured for C/N ratios, δ^<13>C and δ^<15>N values. The deviations of δ^<13>C and δ^<15>N values for seven gelatins are ±0.1‰ and ±0.2‰, respectively. Most bone sections have gelatin yield of more than 0.7 wt%, and carbon yield of the combusted gelatin between 42 and 46 wt%. Bone with more than 0.7 wt% gelatin is generally well preserved, and collagens with around 40 wt% C are intact. The bone samples in this study, therefore, are well preserved and regarded as suitable for analysis. The C/N ratios of gelatins varied from 3.1 to 3.4 with different sections in an individual. The values show quality of the gelatin extractions because the good collagens have C/N ratios between 2.9 and 3.6. The δ^<13>C values of gelatins have variations of about 1‰, between -19.3 and -18.2‰, for different bone sections in an individual. The other two individuals have variations between -19.3 and -18.4‰, and -18.3 and -17.7‰. The δ^<15>N values have variations of about 1.5‰ (12.6〜14.0‰, 12.4〜13.1‰ and 12.6〜14.1‰, respectively) for different sections of each individual. There is a positive correlation betweenδ^<13>C andδ^<15>N values. The back-bones tend to have highest values, and the rib and tooth have a little higher values than the others.

    DOI: 10.18999/sumrua.18.73

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  134. Geochemical study on human and animal bones excavated from the Yuigahama site, Kamakura, Japan(Proceedings of the 19^<th> Symposium on Chronological Studies at the Nagoya University Center for Chronological Research in 2006,Part 2)

    Minami Masayo, Nakamura Toshio, Hirata Kazuaki, Nagaoka Tomohito, Hoshino Keigo

    Summaries of Researches using AMS at Nagoya University   ( 18 ) page: 134 - 143   2007.3

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    During the past several decades, many medieval skeletons were excavated from archaeological sites in the Yuigahama area, Kamakura, Japan. The excavations yielded more than 5,000 individuals in varying states of preservation from the Zaimokuza, Seiyokan, Yuigahama-minami and Chusei Shudan Bochi sites. Medieval Kamakura was an ancient capital of the Kamakura Shogunate, and a lot of people lived in Kamakura with high population density. The human skeletons excavated from the Zaimokuza site are reported to be humans dead by competition at the end of the Kamakura Shogunate, but a detailed study on dating of the human skeletons has not made yet. In this study, we measured ^<14>C ages, together with carbon and nitrogen isotope ratios, of human skeletal remains excavated from the Yuigahama-minami site and Chusei Shudan Bochi site. The δ^<13>C and δ^<15>N were not different between human skeletal samples of both sites, while the ^<14>C ages were different between them: The human bones of the Yuigahama-minami site are 100 year younger than those of the medieval collective-cemetery site. All of ages of human skeletons from both of the sites are older than the latest Kamakura period. The δ^<13>C and δ^<15>N values of the medieval Kamakura people are higher than those of terrestrial mammals, indicating that they exploited some amount of marine fish and/or mammals with higher δ^<13>C and δ^<15>N as protein sources. Therefore, the ^<14>C ages obtained for human skeletons could be order than the true ages. ^<87>Sr/^<86>Sr isotopic ratios of human skeletons of the Yuigahama-minami site tend to be higher than those of the Chusei Shudan Bochi site. Soils, plants and animals feeding on them in a given locality have ^<87>Sr/^<86>Sr values that generally mirror underlying bedrock composition, and thus ^<87>Sr/^<86>Sr ratios of human skeletons are useful tools for assessing migration in prehistory. The result obtained in this study suggests that Yuigahama-minami humans and Chusei Shudan Bochi humas lived in different areas. More skeleton samples should be analyzed for determining detailed ^<14>C ages of humans excavated from the Yuigahama sites, and for estimating migration of prehistory of the medieval Kamakura humans.

    DOI: 10.18999/sumrua.18.134

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  135. 514 A Report on Practice and evaluation of Environmental Education

      ( 45 ) page: 653 - 656   2007.2

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  136. Geochemical mapping in Aichi prefecture, Japan: Its significance as a useful dataset for geological mapping

    Yamamoto Koshi, Tanaka Tsuyoshi, Minami Masayo, Mimura Koichi, Asahara Yoshihiro, Yoshida Hidekazu, Yogo Setsuo, Takeuchi Makoto, Inayoshi Masami

    APPLIED GEOCHEMISTRY   Vol. 22 ( 2 ) page: 306 - 319   2007.2

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    Publisher:Applied Geochemistry  

    DOI: 10.1016/j.apgeochem.2006.09.011

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  137. Geochemical mapping in Aichi Prefecture, Japan: Its significance as a useful dataset for geological mapping. Reviewed

    Yamamoto, K., Tanaka, T., Minami, M., Mimura, K., Asahara, Y., Yoshida, H., Yogo, S., Takeuchi, M. and Inayoshi, M.

    Applied Geochemistry   Vol. 22   page: 306-319   2007

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  138. Estimation of paleotemperature from racemization of aspartic acid in combination with radiocarbon age. Reviewed

    Minami, M., Takeyama, M., Mimura, K. and Nakamura, T.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B259   page: 547-551   2007

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  139. 鎌倉由比ヶ浜埋葬人骨および獣骨の地球化学的研究

    南 雅代・中村俊夫・平田和明・長岡朋人・鵜澤和宏

    名古屋大学加速器質量分析計業績報告書   Vol. XVIII   page: 134-143   2007

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  140. Diverse microstructures from Archaean chert from the Mount Goldsworthy - Mount Grant area, Pilbara Craton, Western Australia: microfossils, dubiofossils, or pseudofossils? Reviewed

    Sugitani, K., Grey, K., Allwood, A.C., Nagaoka, T., Minami, M., Marshall, C.P., Van Kranendonk, M.J. and Walter, M.R.

    Precambrian Research   Vol. 158   page: 228-262   2007

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  141. Application of (14C) Wggle-matching to support dendrochronological analysis in Japan

    Nakamura T., Okuno M., Kimura K., Mitsutani T., Moriwaki H., Ishizuka Y., Kim K. H., Jing B. L., Oda H., Minami M., Takada H.

    TREE-RING RESEARCH   Vol. 63 ( 1 ) page: 37 - 46   2007

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  142. Application of <sup>14</sup>C wiggle-matching to support dendrochronological analysis in Japan

    Nakamura T.

    Tree-Ring Research   Vol. 63 ( 1 ) page: 37 - 46   2007

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    DOI: 10.3959/1536-1098-63.1.37

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  143. Reconstruction of migration and mobility using strontium isotope analysis of archaeological human skeletons -Do 87Sr/86Sr ratios of animal bones reflect 87Sr/86Sr ratios of the birth- and growth-places?-

    Minami Masayo, Suzuki Kazuhiro, Goto Akiko, Kato Takenori, Watanabe Ken-ichi, Hasegawa Takuya

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 54 ( 0 ) page: 203 - 203   2007

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    Publisher:GEOCHEMICAL SOCIETY OF JAPAN  

    To evaluate whether 87Sr/86Sr ratio of a bone reflects 87Sr/86Sr ratio of the birth- and growth-places, two bone samples, together with the geological samples in their birth- and growth-places, were measured for 87Sr/86Sr ratios by TIMS. The samples used are a boar collected at Asuke, Toyota City, Aichi prefecture, and a black bass collected from Lake Biwa. The 87Sr/86Sr ratio of the boar bone was 0.71001&plusmn;0.00002, while those of stream sediments in the Asuke area was around 0.710. The 87Sr/86Sr ratio of the black bass bone was 0.71215&plusmn;0.00002, while those of surface water at the southern basin in Lake Biwa was 0.71233&plusmn;0.00002. The similar 87Sr/86Sr ratios between bone and its provenance geology indicates that the 87Sr/86Sr ratio of bone reflects the isotopic ratios of the birth- and growth-places.

    DOI: 10.14862/geochemproc.54.0.203.0

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  144. Origin Determination of Fossil Bone using Resonance Ionization Mass Spectrometry

    SASADA SEIJI, Goto Syouko, Hasegawa Takuya, HIGUCHI YUKI, TOMITA HIDEKI, Watanabe Kenichi, Kawarabayasi Jyun, Iguchi Tetsuo, Minami Masayo, Suzuki Kazuhiro, Katou Takenori

    Proceedings of Annual / Fall Meetings of Atomic Energy Society of Japan   Vol. 2007 ( 0 ) page: 66 - 66   2007

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    DOI: 10.11561/aesj.2007s.0.66.0

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  145. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldsworthy in the Pilbara Craton, Western Australia : Implications for alteration and origin

    Sugitani Kenichiro, Yamashita Fumiaki, Nagaoka Tsutomu, MINAMI MASAYO, YAMAMOTO KOSHI

    Geochemical journal : journal of the Geochemical Society of Japan   Vol. 40 ( 5 ) page: 523 - 535   2006.10

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  146. Geochemistry and sedimentary petrology of Archean clastic sedimentary rocks at Mt. Goldsworthy, Pilbara Craton, Western Australia: Evidence for the early evolution of continental crust and hydrothermal alteration Reviewed

    K Sugitani, F Yamashita, T Nagaoka, K Yamamoto, M Minami, K Mimura, K Suzuki

    PRECAMBRIAN RESEARCH   Vol. 147 ( 1-2 ) page: 124 - 147   2006.6

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    Geochemical and petrological analyses of Archean clastic metasedimentary rocks at Mt. Goldsworthy in the Pilbara Craton, Western Australia reveal the early evolution of continental crust and the Earth's surface environment. The succession correlative to the ca. 3.4 Ga Strelley Pool Chert is composed dominantly of silicified medium-grained to very coarse-grained sandstone, siltstone and shale, with minor chert and precipitative beds of nahcolite and barite. The sandstone is generally rich in detrital quartz, with the coarse-grained sandstone containing abundant, very well rounded mono-crystalline quartz that is assumed to be derived from older sedimentary rocks. The recycled detritus is mixed with first-cycle detrital material such as feldspar and barite that is sourced from reworked precipitative beds. The sandstone also contains zircon, Fe-Ti oxides, sulfides and lithic fragments of various origins including mafic-ultramafic volcanic rocks, sedimentary and possibly metamorphic rocks.
    Al-Ti-Zr systematics indicates that the source area for the Mt. Goldsworthy clastic metasedimentary rocks was locally subjected to hydrothermal alteration. Reaction with the acid solution resulted in Al-dissolution and the formation of Zr- and Ti-enriched residual detrital material. The enrichment in heavy rare earth elements and low Al2O3/TiO2 values of Mt. Goldsworthy samples reflects the inflow of the residual zircon- and Ti-oxides-enriched detritus. Th/Sc, La/Sc and Eu/Eu-* ratios that are unaffected by contamination by the residual detritus indicate a mixed provenance with a significant contribution from granitoid rocks. The presence of detrital zircon older than 3.5 Ga was also demonstrated in this study. (c) 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.precamres.2006.02.006

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  147. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites

    Minami M, Terui A, Takaoka N, Nakamura T

    METEORITICS & PLANETARY SCIENCE   Vol. 41 ( 4 ) page: 529 - 540   2006.4

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  148. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites

    Minami M.

    Meteoritics and Planetary Science   Vol. 41 ( 4 ) page: 529 - 540   2006.4

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    Publisher:Meteoritics and Planetary Science  

    DOI: 10.1111/j.1945-5100.2006.tb00480.x

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  149. Application of Sr isotopes to geochemical mapping and provenance analysis: The case of Aichi Prefecture, central Japan

    Asahara Y, Ishiguro H, Tanaka T, Yamamoto K, Mimura K, Minami M, Yoshida H

    APPLIED GEOCHEMISTRY   Vol. 21 ( 3 ) page: 419 - 436   2006.3

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    Publisher:Applied Geochemistry  

    DOI: 10.1016/j.apgeochem.2005.12.003

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  150. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites. Reviewed

    Minami, M., Terui, A., Takaoka, N. and Nakamura, T.

    Meteoritics & Planetary Science   Vol. 41 ( 4 ) page: 529-540   2006

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  151. INAA trace element analysis of stream sediments collected from the northeastern areas of Aichi Prefecture, central Japan. Reviewed

    Minami, M., Shibata, S. and Tanaka, T.

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 53   page: 15-32   2006

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  152. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldworthy in the Pilbara Craton, Western Australia: Implications for alteration and origin. Reviewed

    Sugitani, K., Yamashita, F., Nagaoka T., Minami, M. and Yamamoto, K.

    Geochemical Journal   Vol. 40   page: 523-535   2006

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  153. Geochemistry and sedimentary petrology of Archean clastic sedimentary rocks at Mt. Goldworthy, Pilbara Craton, Western Australia: Evidence for the early evolution of continental crust and hydrothermal alteration. Reviewed

    Sugitani, K., Yamashita, F., Nagaoka T., Yamamoto, K., Minami, M., Mimura, K. and Suzuki K.

    Precambrian Research   Vol. 147   page: 124-147   2006

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  154. Application of Sr isotopes to geochemical mapping and provenance analysis: the case of Aichi Prefecture, central Japan. Reviewed

    Asahara, Y., Ishiguro, H., Tanaka, T., Yamamoto, K., Mimura, K., Minami, M., Yoshida, H.

    Applied Geochemistry   Vol. 21   page: 419-436   2006

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  155. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldsworthy in the Pilbara Craton, Western Australia: Implications for alteration and origin

    Sugitani Kenichiro, Yamashita Fumiaki, Nagaoka Tsutomu, Minami Masayo, Yamamoto Koshi

    GEOCHEMICAL JOURNAL   Vol. 40 ( 5 ) page: 523 - 535   2006

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  156. INAA trace element analysis of stream sediments collected from the nortearstern areas of Aichi Prefecture, central Japan

    MINAMI M., SHIBATA Shin-nosuke, TANAKA Tsuyoshi

    The Journal of Earth and Planetary Sciences, Nagoya University   ( 53 ) page: 15 - 32   2006

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    Publisher:名古屋大学  

    Geochemistry and Cosmochemistry Laboratory, Nagoya University, started a geochemical mapping project in 1994 to make environmental assessment of the Chubu area in Japan. During ten years from 1994 to 2004, stream sediment samples of 1,563 were collected in the northeastern parts of Aichi Prefecture. Major element data of these samples by X-ray fluorescence spectrometry (XRF) and the discussion on their regional spatial distributions have been published. Here we report 22 element analysis (Sc, Cr, Fe, Co, Zn, As, Rb, Sb, Cr, Ba, La, Ce, Sm, Eu, Tb, Yb, Lu, Hf, Ta, Au, Th and U) of the sediment samples by instrumental neutron activation analysis (INAA), together with discussion on the accuracy and precision of our analytical method by INAA. A new automated γ-ray counting and data processing system for INAA and postaldelivery system of irradiated samples from Japan Atomic Energy Research Institute were utilized. The INAA system enables us simple and rapid INAA analysis of a large number of samples. By using this system, nine GSJ rock reference samples (JB-1a, JB-2, JA-1, JG-1a, JG-2, JLk-1, JSd-1, JSd-2 and JSd-3) and one USGS rock standard G-2 were analyzed to examine accuracy and precision of analytical results. The results show good agreement with the reference values, indicating that our analytical system is effective for analysis of stream sediments with various bedrock geology. On the other hand, in order to evaluate accruracy of the values obtained by INAA, comparison of analytical results of stream sediments by INAA with the previously analyzed data by inductively coupled plasma atomic emission spectrometry (ICP-AES), atomic absorption spectrometry (AAS) and XRF was made. The result indicates that the data by the ICP-AES and AAS methods, which need HF digestion of samples, could be lower than the true values for some elements due to partly incomplete decomposition of samples. The INAA method, which needs no HF digestion, is suitable for accurate analysis for a large number of samples in the geochemical mapping project. We have collected stream sediments collected at the same site every year since 1994 to 2004. The samples were used to evaluate sample heterogeneity of the sediment collected at the same site. Most of trace elements, except for Cr, Zn, Hf and Au, of the samples show the concentrations with ±(30~50)% deviations, a little larger than the analytical errors. The Cr, Zn, Hf and Au concentrations have larger deviations, indicating the heterogeneous distribution of small accessory minerals at the sampling site and even in sample aliquots of 100 mg.国立情報学研究所で電子化したコンテンツを使用している。

    DOI: 10.18999/joueps.53.15

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  157. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldsworthy in the Pilbara Craton, Western Australia: Implications for alteration and origin Reviewed

    Kenichiro Sugitani, Fumiaki Yamashita, Tsutomu Nagaoka, Masayo Minami, Koshi Yamamoto

    GEOCHEMICAL JOURNAL   Vol. 40 ( 5 ) page: 523 - 535   2006

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    The geochemical characteristics of Archean unusual siliceous rocks at Mt. Goldsworthy region in the Pilbara Craton were studied. The siliceous rocks have been assigned to the uppermost Warrawoona Group mafic volcanic rocks, and are overlain by quartz-rich sandstone units of the Strelley Pool Chert that probably represent continental margin sedimentation. The Warrwoona rocks have been heavily altered and are now composed dominantly of microcrystalline quartz, with subordinate mica, Fe-Ti oxides and unidentified silicates; original magmatic textures are only locally preserved. The complex alteration is assumed to result from multiple events including weathering during subaerial exposure, circulation of hydrothermal fluids, and metasomatic silicification. During alteration, Al, Ti, Zr, Th, Cr and Sc remained immobile, although their concentrations were lowered by a substantial increase in silica. Mutual ratios of these immobile elements such as Al2O3/TiO2 Cr/Th, Th/Sc, Cr/Al2O3 and Zr/TiO2 and comparison with the least-altered contemporaneous mafic-ultramafic rocks in the Pilbara Craton show that the altered rocks originated from high-MgO rocks such as komatiite and high-MgO basalt, possibly of Al-depleted type. The Mt. Goldsworthy rocks have significantly higher Th/Sc (0.024-0.1) values compared with primitive mantle values (0.005) and komatiite (0.01). This feature is interpreted as a result of crustal contamination, which is consistent with the early evolution of continental crust.

    DOI: 10.2343/geochemj.40.523

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  158. Sr isotopic composition of fossil human bones from Kamakura, Japan

    Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 53 ( 0 ) page: 224 - 224   2006

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    DOI: 10.14862/geochemproc.53.0.224.0

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  159. Annual and seasonal changes of chemical composition of stream sediments in the Yada river in Seto, Aichi

    Minami Masayo, Itoh Tomoko, Tanaka Tsuyoshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 53 ( 0 ) page: 98 - 98   2006

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    DOI: 10.14862/geochemproc.53.0.98.0

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  160. Behavior of arsenic and gold in Mesozoic and Paleozoic areas, Inuyama-city,Aichi Prefecture;studies by geochemical mapping

    Ito Tomoko, Tanaka Tsuyoshi, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 53 ( 0 ) page: 136 - 136   2006

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    Gold, arsenic and antimony appear together in hydrothermally altered area. However, Au exists very little in the eastern part of Inuyama-city, although high As concentrations are observed. There might be different mechanism of elemental concentration in As and Au from hydrothermally altered area. In this study, we collected 101 stream sediments in Inuyama-city, Aichi Prefecture, and determine major elements and trace elements that included As ,Sb and Au. We drew the geochemical map of these elements and discuss mobility of elements in Mesozoic and Paleozoic area.

    DOI: 10.14862/geochemproc.53.0.136.0

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  161. Carbon and nitrogen isotopic fractionation in bone collagen during chemical treatment

    Minami M, Nakamura T

    CHEMICAL GEOLOGY   Vol. 222 ( 1-2 ) page: 65 - 74   2005.10

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    DOI: 10.1016/j.chemgeo.2005.06.005

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  162. Carbon and nitrogen isotopic fractionation in bone collagen during chemical treatment. Reviewed

    Minami M. and Nakamura, T.

    Chemical Geology   Vol. 222   page: 65-74   2005

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  163. 琵琶湖の湖底堆積物ならびに流入河川堆積物の炭素同位体比から探る堆積環境

    南 雅代,種 紀彦,小田寛貴,横田喜一郎

    名古屋大学加速器質量分析計業績報告書   Vol. XVI   page: 73-83   2005

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  164. Database for geochemical mapping of the northeastern areas of Aichi Prefecture, central Japan -XRF major element data of stream sediments collected in 1994 to 2004-. Reviewed

    Minami, M., Tanaka, T., Yamamoto, K., Mimura, K., Asahara, Y., Takeuchi, M., Yoshida, H. and Yogo, S.

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 52   page: 25- 67   2005

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  165. Determination of Sr isotopic composition and concentration on a single sample aliquot with <sup>84</sup>Sr-concentrated spike

    Minami Masayo, Hayashi Takamasa, Tanaka Tsuyoshi

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 52 ( 0 ) page: 273 - 273   2005

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    Techniques have been developed to measure Sr isotopic composition and concentration on a single sample aliquot in rock and water samples with <sup>84</sup>Sr-concentrated spike. A single TIMS measurement of the Sr sample yielded both isotopic composition and concentration after decomposition of mixture of sample and <sup>84</sup>Sr spike. Standard solutions with different Sr concentrations, made form Johnson-Matthey Specpure SrCO<sub>3</sub> (99.999%), were added by appropriate amount of 84Sr spike solution, and determined the Sr isotopic composition and concentration. The single measurement was adopted to water samples of an Indian river and standard rocks such as JP-1 and JCh-1. We will report the results.

    DOI: 10.14862/geochemproc.52.0.273.0

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  166. Database for geochemical mapping of the northeastern areas of Aichi Prefecture, central Japan ^ XRF major element data of stream sediments collected in 1994 to 2004 -

    MINAMI Masayo, TANAKA Tsuyoshi, YAMAMOTO Koshi, MIMURA Koichi, ASAHARA Yoshihiro, TAKEUCHI Makoto, YOSHIDA Hidekazu, YOGO Setsuo

    The Journal of earth and planetary sciences, Nagoya University   ( 52 ) page: 25 - 67   2005

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    国立情報学研究所で電子化したコンテンツを使用している。

    DOI: 10.18999/joueps.52.25

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  167. Sedimentary environment in Lake Biwa -Carbon isotopes of lake and river sediments-

    Minami Masayo, Tane Norihiko, Oda Hirotaka, Yokota Kiichiro, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 52 ( 0 ) page: 170 - 170   2005

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    Lake sediment cores in Lake Biwa, collected from the northern and southern basins, respectively, were measured for carbon content, d<sup>13</sup>C, and d<sup>14</sup>C. Acid-alkali-insoluble fraction (residue) and acid-soluble fraction obtained by acid-alkali-acid treatment of the sediments were analyzed. The sediments in rivers flowing in Lake Biwa were also measured for C content and d<sup>13</sup>C of residue and acid-soluble fractions. The d<sup>13</sup>C and d<sup>14</sup>C values of residue were higher than those of acid-soluble fraction. We will report the difference, together with the result of different chemical behaviors of sediments in the northern and southern basins.

    DOI: 10.14862/geochemproc.52.0.170.0

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  168. Possible microfossils from c. 3.4 Ga Strelley Pool Chert at Mt. Goldsworthy in the Pilbara Block, Western Australia

    Sugitani Kenichiro, Mimura Koichi, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 52 ( 0 ) page: 105 - 105   2005

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    DOI: 10.14862/geochemproc.52.0.105.0

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  169. Chemical Composition of Fine Fractions (<63μm) of Street Dust as Nonpoint Pollution Source of River and Sewer Systems in Urban Areas : A Case Study for Nagoya City

    SUGITANI Kenichiro, NOMURA Akiko, MINAMI Masayo, KATO Hirokazu

    Journal of Japan Society on Water Environment   Vol. 27 ( 8 ) page: 547 - 552   2004.8

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    The chemical composition of fine fractions (<63<i>&mu;</i>m) of street dust in Nagoya City, central Japan, is examined to obtain information on the nonpoint pollution load of river and sewer systems in urban areas. The results show that the fine fractions of street dust have more C, Fe, Mn, Ca, Mg, P, Cr, Zn, Sb, As, Hf, and Au than hypothetical background level. Additionally, Ti and Co are also derived significantly from anthropogenic sources. Among these &ldquo;enriched elements&rdquo;, C, Ca, P, Zn and Ti are likely derived from tire and asphalt dusts, whereas Fe, Mn, Co and possibly Cr appear to be incorporated into street dust as iron alloy particles. These metallic iron particles are also considered to be derived from parts of vehicles such as their bodies and brake disks.

    DOI: 10.2965/jswe.27.547

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  170. Chemical techniques to extract organic fractions from fossil bones for accurate C-14 dating

    Minami M, Muto H, Nakamura T

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 223 ( SPEC. ISS. ) page: 302 - 307   2004.8

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    DOI: 10.1016/j.nimb.2004.04.060

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  171. High precision C-14 measurements with the HVEE Tandetron AMS system at Nagoya University

    Nakamura T, Niu E, Oda H, Ikeda A, Minami M, Ohta T, Oda T

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 223 ( SPEC. ISS. ) page: 124 - 129   2004.8

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    DOI: 10.1016/j.nimb.2004.04.027

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  172. Precambrian Antarctic Meteorite "Phantasia"

    Tanaka T, Minami M, Shibata S, Yanai K, Shiraishi K

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 68 ( 11 ) page: A769 - A769   2004.6

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  173. Chemical characteristics of lake sediments in Lake Biwa(Summaries of Researches Using AMS)

    MINAMI Masayo, HIRANO Yasuyuki, ODA Hirotaka, YOKOTA Kiichiro

    Summaries of Researches using AMS at Nagoya University   ( 15 ) page: 181 - 198   2004.3

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    The chemical composition of major and trace elements in bottom sediments of Lake Biwa was determined by X-ray fluorescence spectrometry (XRF) and instrumental neutron activation analysis (INAA). The sediments were collected in the northern basin, the southern basin and its boundary part. The vertical distribution patterns of some elements in the northern basin, such as Al, Ti and Sc, are similar each other. The concentrations of Al, Ti and Sc in the northern basin increase from the surface to the depth of about 18cm, where they reach maxima. The variations in concentrations are probably due to temporal influx of Allvium which consists of clay, mud and gravel layer. The concentrations of As and Mn are extremely high in the surface layer in the northern and southern basins. Manganese in sediments exists in different forms of oxidation state together with variation of redox condition. Manganese precipitates in oxic layer as Mn(IV)-oxides. Therefore, the concentration of Mn is high in the surface layer. The high concentration of As in the oxidized surface layer is due to Mn acting as carrier, so that the vertical distribution pattern of As is similar to that of Mn. The plots of major elements against TiO_2 show correlations in granites, river sediments and lake sediments. The lower concentrations of Na_2O, CaO and SiO_2 in river and lake sediments compared to granites are caused by weathering of plagioclase. The higher concentrations of Fe_2O_3 and MgO are relative increase in samples due to resolution of some elements sensitive to weathering.

    DOI: 10.18999/sumrua.15.181

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  174. High precision 14C measurement with the HVEE Tandetron AMS system at Nagoya Universtiy. Reviewed

    Nakamura, T., Niu, E., Oda, H., Ikeda, A., Minami, M.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B223-224   page: 124-129   2004

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  175. Chemical techniques to extract organic fractions from fossil bones for accurate 14C dating, Reviewed

    Minami, M., Muto, H. and Nakamura, T.

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B223-224   page: 302-307   2004

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  176. 琵琶湖湖底堆積物の化学的特徴

    南 雅代・平野靖幸・小田寛貴・横田喜一郎

    名古屋大学加速器質量分析計業績報告書   Vol. XV   page: 181-198   2004

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  177. 東シベリアマンモス臼歯化石のアミノ酸のラセミ化と14C年代

    南 雅代・竹山雅美・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XV   page: 52-65   2004

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  178. 都市公共用水域に対するノンポイント汚染源としての道路脇粉塵(<63μm画分)の化学的特徴-名古屋市の事例- Reviewed

    杉谷健一郎・野村晶子・南 雅代・加藤博和

    水環境学会誌   Vol. 27   page: 547-552   2004

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  179. Radiocarbon age and amino acid racemization of a Mammoth molar fossil from eastern Siberia

    Minami Masayo, Takeyama Masami, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 51 ( 0 ) page: 110 - 110   2004

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    We measured D/L aspartic acid ratios and radiocarbon ages of a Mammoth molar fossil collected from Bykovsky Peninsula, eastern Siberia. Four parts of dentin, enamel, cement and root in the molar fossil were analyzed for gelatins and XAD-treated hydrolysates. The <sup>14</sup>C ages of four parts are different, and the gelatins have 1000-2000 year older ages than the XAD-treated hydrolysates, expect for the root part. It is thought that the Molor fossil is dated about 37,000 BP. The D/L aspartic acid ratio of the molar fossil is low, and it suggests that amino acids in the Mammoth molar have not racemized since it was dead and buried. This result is well consistent with the fact that it was preserved in the permafrost.

    DOI: 10.14862/geochemproc.51.0.110.0

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  180. Dependence of C-14 ages on carbon fraction and reservoir effect for archeological materials

    Nakamura T, Minami M, Oda H, Niu E, Ikeda A, Ohta T

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A328 - A328   2003.9

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  181. Geochemical map of Aichi prefecture, central part of Japan major elements

    Yamamoto K, Tanaka T, Minami M, Mimura K, Asahara Y, Yoshida H, Yogo S, Inayoshi M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A552 - A552   2003.9

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  182. Geochemical map of Aichi Prefecture, central part of Japan - Minor elements

    Tanaka T, Yamamoto K, Minami M, Mimura K, Asahara Y, Yoshida H, Yogo S, Inayoshi M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A476 - A476   2003.9

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  183. New attempt to geochemical mapping of Sr isotope in Aichi Prefecture, central part of Japan

    Asahara Y, Ishiguro H, Tanaka T, Yamamoto K, Mimura K, Minami M, Yoshida HD, Yogo S

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A25 - A25   2003.9

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  184. Sr-87/Sr-86 ratios in lake sediments in Lake Biwa, Japan - Environmental change in the last 200 years

    Minami M, Oda H, Yokota K, Ando K, Yamamoto K

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 67 ( 18 ) page: A292 - A292   2003.9

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  185. Radiocarbon age and racemization reaction of amino acids extracted from a molar fossil(Summaries of Researches Using AMS)

    MINAMI Masayo, MURANAKA Yasushi, NAKAMURA Toshio

    Summaries of Researches using AMS at Nagoya University   ( 14 ) page: 201 - 207   2003.3

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    The XAD-2 treated collagen-hydrolysate of a Naumann's elephant molar fossil collected from the bottom of the Uwa Sea was analyzed with the gaschromatography. The ratio of D/L Aspartic acid is 0.128. Substituting the D/L Aspartic acid ratio and the radiocarbon age of 43,870±450 BP (Muto, 2001) for "D/L" and "t", respectively, into the following equation : 1n((1+D/L)/(1-D/L))-0.14=2k_<asp>t where k_<asp> is the rate constant of Aspartic acid enantiomer, and t is the time after the start of the racemization reaction, we have (1.34±0.01)×10^<-6> for k_<asp>. Futhermore, substituting the value of k_<asp> into the equation : 1n((8×10^<-4>)/k_<asp>)=((33.4×10^3)/1.987)(310-T)/(T×310) (10) where T is the average temperature (K) of the fossil since deposition, yields T of 277.3±0.1 K (4.1±0.1℃). The age between 44,000 and 10,000 years ago was a glacial period. The Seto Inland Sea was a land before 10,000 years, and sea water has flowed into the Seto Inland Sea since 8,000 years ago. The surrounding temperature of the molar fossil on land could be over 4.1℃, and water temperature of the bottom of the sea is assumed to be 0〜5℃. Therefore, the average temperature of 4.1℃ for the molar fossil could be true.

    DOI: 10.18999/sumrua.14.201

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  186. Evaluation of organometals as an indicator of environmental assessment : case of Lake Biwa sediments(Summaries of Researches Using AMS)

    ANDO Kunihiko, MINAMI Masayo, ODA Hirotaka, YOKOTA Kiichiro, YAMAMOTO Koshi

    Summaries of Researches using AMS at Nagoya University   ( 14 ) page: 155 - 169   2003.3

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    The organometal, which consists of organic compound and metal, is regarded to be hardly affected by the geology of the hinterland. Thus, it may be useful as a new indicator of environmental assessment. In this study, organometals in sediments of Biwa Lake are analyzed, and their usefulness as an indicator of environmental assessment is discussed. The vertical distribution of organometals does not correlate with that of major elements. Since major element compositions are controlled mainly by the geology of hinterland, organometals is hardly affected by major elements. The vertical distribution of these elements are roughly divied into three groups: 1) elements with no clear variation of the content against burial depth such as Fe Mn Ni and Cu; Artificial pollution of these elements are not detected in the bottom sediments in Lake Biwa, 2) elements with higher content in surface layers such as Mn, Fe Ni and Cu; Increase for Fe and Mn may be ascribed to the effect of bacterial accumulation, and increase for Ni and Cu may be due to artificial addition. There is a strong correlation between Ni and Cu, and 3) elements with the highest content near 20cm layer such as Co, As ans Se; They are positively correlated with organic carbon, that is, organic matters. In the case of Lake Biwa, the organometals that could be used as an indicator of anthropogenic pollution are Ni and Cu. Artificial poluution of Ni and Cu have been increased during this 100year.

    DOI: 10.18999/sumrua.14.155

    CiNii Article

  187. 最近落下した隕石ならびに南極やまと隕石の14C濃度測定

    南 雅代・照井敦・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIV   page: 72-82   2003

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  188. 有機金属の環境指標としての有用性の検討

    安藤邦彦・南 雅代・小田寛貴・横田喜一郎・山本鋼志

    名古屋大学加速器質量分析計業績報告書   Vol. XIV   page: 155-169   2003

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  189. 化石骨から抽出したアミノ酸の14C年代とラセミ化反応

    南 雅代・村中泰志・中村俊夫

    名古屋大学加速器質量分析業績報告書   Vol. XIV   page: 201-207   2003

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  190. Radiocarbon age and racemization reaction of amino acids extracted from a Naumann's molar fossil

    Minami Masayo, Muranaka Yasushi, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 50 ( 0 ) page: 31 - 31   2003

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    DOI: 10.14862/geochemproc.50.0.31.0

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  191. Application of Sr isotope to an assessment of geoenvironmental impact

    Asahara Yoshihiro, Ishiguro Hiroko, Tanaka Tsuyoshi, Yamamoto Koshi, Mimura Koichi, Minami Masayo, Yoshida Hidekazu, Yogo Setsuo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 50 ( 0 ) page: 63 - 63   2003

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    DOI: 10.14862/geochemproc.50.0.63.0

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  192. Geochemical map of aichi Prefecture - Major elements -

    Yamamoto Koshi, Tanaka Tsuyoshi, Minami Masayo, Mimura Koichi, Asahara Yoshihiro, Yoshida Hidekazu, Yogo Setsuo, Inayoshi Masami

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 50 ( 0 ) page: 61 - 61   2003

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    Geochemical and Cosmochemical Laboratory, Nagoya University, has started a geochemical mapping in 1994, in order to make a geo-environmental assessment of Aichi Prefecture, central part of Japan.The analyses suggest that the stream sediments from areas with sedimentary rock basement are more enriched in SiO2 than those from areas with granitic basement. This SiO2 enrichment can be ascribed to the wide distribution of siliceous sedimentary rocks such as bedded cherts in their hinterland, the Mino Terrane. Samples from the area in the granitic basement are characterized by enrichment of Na, K, and Ca. The relative abundance of these elements, however, differs in the respective granitic bodies. This difference reflects the difference of abundance and chemical composition of plagioclase and potassium feldspar in stream sediments. Therefore, the major elements examined here reflect natural geo-environment and geochemical map may be useful as a supporting data for geological mapping.

    DOI: 10.14862/geochemproc.50.0.61.0

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  193. Geochemical map of Aichi Prefecture -Minor elements-

    Tanaka Tsuyoshi, Yamamoto Koshi, Minami Masayo, Mimura Koichi, Asahara Yoshihiro, Yoshida Hidekazu, Yogo Setsuo, Inayoshi Masami

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 50 ( 0 ) page: 62 - 62   2003

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    Geochemical map is a useful tool for geoenvironmental assessment. 27 minor elements were examined for 1500 stream sediment of Aichi Prefecture, Japan. Most of the elemental distribution patterns are considered as an effect of basement geology. Some of the high Fe distribution ,however, are correlated with golf cource. Gold and arsenic distribution seems be a result of geothermal activities.

    DOI: 10.14862/geochemproc.50.0.62.0

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  194. Isotope diluted neutron activation analysis (ID-NAA) for quantitative analysis of PGEs and Re

    Tanaka T, Senda R, Shibata S, Minami M, Tanimizu M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 66 ( 15A ) page: A763 - A763   2002.8

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  195. Presence of evolved continental crust in Archean Pilbara craton, Western Australia: Evidence from Re-Os isotopic systematics of 3.4Gyr cherts

    Suzuki K, Shimizu F, Okamoto M, Hattori Y, Minami M, Shimoda G, Tatsumi Y, Adachi M

    GEOCHIMICA ET COSMOCHIMICA ACTA   Vol. 66 ( 15A ) page: A755 - A755   2002.8

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  196. Diurnal variation of CO<inf>2</inf> concentration, Δ <sup>14</sup>C and δ<sup>13</sup>C in an urban forest: Estimate of the anthropogenic and biogenic CO<inf>2</inf> contributions

    Takahashi H.A.

    Tellus, Series B: Chemical and Physical Meteorology   Vol. 54 ( 2 ) page: 97 - 109   2002.4

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    DOI: 10.1034/j.1600-0889.2002.00231.x

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  197. Diurnal variation of CO2 concentration, Delta C-14 and delta C-13 in an urban forest: estimate of the anthropogenic and biogenic CO2 contributions

    Takahashi HA, Konohira E, Hiyama T, Minami M, Nakamura T, Yoshida N

    TELLUS SERIES B-CHEMICAL AND PHYSICAL METEOROLOGY   Vol. 54 ( 2 ) page: 97 - 109   2002.4

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  198. Preliminary results of 2000-fourth international radiocarbon intercomparison : international blind test of <14>^C measurement

    Nakamura Toshio, Oda Hirotaka, Niu Etsuko, Ikeda Akiko, Minami Masayo, Takahashi Hiroshi, Ohta Tomoko

    Summaries of Researches using AMS at Nagoya University   ( 13 ) page: 29 - 40   2002.3

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    A Tandetron accelerator mass spectrometer (Tandetron-I AMS system), an apparatus dedicated to high sensitivity radiocarbon (^<14>C) measurements, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure the ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archaeological materials, at the Center for Chronological Research (CCR), Nagoya University. In the meanwhile, a so-called second generation AMS ^<14>C apparatus (Tandetron-II AMS system) manufactured by High Voltage Engineering Europe, BV, the Netherlands has been installed successfully at CCR in 1997. Though we had experienced a lot of difficulties with the Tandetron-II just two years after its installation, we were able to start ^<14>C measurements with the machine in acceptable precision since the end of 1999. The ^<14>C measurement error (one sigma error)of the Tandetron-II is around ±20 - ±40 years, which is clearly smaller than that of the Tandetron-I (around ±50 - ±90 years). In addition, the reproducibility tests of ^<14>C measurements for the IAEA C1- C8 ^<14>C standards suggest that accuracy of ^<14>C measurement can be as good as around 0.5% We participated the Forth International Radiocarbon Intercomparison (FIRI) program started in 1999,after its set up at the time of the 15^<th> International Radiocarbon Conference at the University of Groningen, the Netherlands, in 1997. In the FIRI program, 10 samples of different materials were distributed to 92 ^<14>C laboratories of three different ^<14>C detection methods (25 AMS labs., 18 GPC labs. and 49 LSC labs.) from 37 different countries. Our AMS group of Nagoya University is one of the 25 AMS labs. The FIRI results have been reported preliminarily at the Edinburgh workshop on March 2001. We can also get the results by the web site of Radiocarbon (www. radiocarbon. org). We briefly summarize the report in relation with our own results, which are consistent with the mean values of ^<14>C results reported from 25 AMS labs.

    DOI: 10.18999/sumrua.13.29

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  199. Determination of the condition in decalcification for fossil bones

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 13 ) page: 177 - 185   2002.3

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    To investigate the best HCl concentration used for decalcification of a fossil bone without loss of bone organic fractions, various concentrations of 0.4M, 0.6M, 0.8M, 1.0M and 1.2M HCl were examined to analyze carbon, nitrogen and radiocarbon isotopes. The bone used in the experiment is a fossil fragment collected from the Awazu submarine archeological site, Shiga. The yield of insoluble decalcified fractions does not change in the range from 0.4M to 1.0M HCl, and it decreases on 1.2M HCl. The result suggests that a part of bone organic fractions departs from the decalcified fractions by treatment of higher HCl concentration. The ^<14>C age for gelatin collagens does not change on any concentrations of 0.4M, 0.6M, 0.8M and 1.2M HCl, and could be reliable because the XAD-2 treated hydrolysate fraction shows the same ^<14>C age. Therefore, 0.4M is the best concentration of HCl to efficiently decalcify the fossil fragment in this study. The fossil bone used in this study is well-preserved, and the above best condition of decalcification does not apply to another poorly-preserved fossil bones. It could be, however, suitable to decalcify and fossil bone with 0.4M HCl in a cellulose tube.

    DOI: 10.18999/sumrua.13.177

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  200. Sr isotope ratios of sediments in southern Lake Biwa

    Minami Masayo, Oda Hirotaka, Kojima Sadao, Yokota Kiichiro, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 13 ) page: 71 - 81   2002.3

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    A sediment core in the southern Lake Biwa was analyzed for ^<210>Pb, ^<137>Cs and Sr isotope ratio. The sedimentation rate of the lake sediments assumed by ^<210>Pb is about 3mm/y. 137Cs, a fallout product from atmospheric nuclear weapon tests, shows maximum activity at 9.5cm depth. Maximum fallout of ^<137>Cs to water and land occurred during 1963-1964,and the sedimentation rate assumed by ^<137>Cs is also about 3mm/y. The sedimentation rate of 3mm/y, however, could be untrue because surface sediments are disturbed and mixed by physical turbulence. Sr isotope ratios of the lake sediments radically change from 0.7185 to 0.7198,and Sr concentrations also radically change from 73ppm to 64ppm at near 10cm depth. Therefore, the following causes are expected : 1) Sr system has changed by artificially environment pollution since near 1960,and 2) surface sediments are disturbed and mixed by physical turbulence. In the case of 2), the profiles of ^<210>Pb and ^<137>Cs lead to mixing process except sedimentation process. The profiles of other nuclides such as ^<14>C and ^<90>Sr would help better understanding of the behavior of lake sediments. It is necessary to analyze another sediment cores of southern and northern Lake Biwa.

    DOI: 10.18999/sumrua.13.71

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  201. Diurnal variation of CO2 concentration, Δ14C and δ13C in an urban forest --Estimate of the anthropogenic and biogenic CO2 contributions--. Reviewed

    Takahashi, H., Konohira, E., Hiyama, T., Minami, M., Nakamura, T. and Yoshida, N.

    Tellus   Vol. 54B   page: 97-109   2002

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  202. 化石骨の脱灰処理条件の検討

    南 雅代・中村俊夫

    名古屋大学加速器質量分析業績報告書   Vol. XIII   page: 177-185   2002

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  203. 琵琶湖南湖の湖底堆積物のSr同位体比

    南 雅代・小田寛貴・小島貞男・横田喜一郎・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIII   page: 71-81   2002

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  204. Isotope diluted neutron activation analysis (ID-NAA) for quantitative analysis of PGEs and Re

    Tanaka Tsuyoshi, Senda Ryouko, Shibata Sinnosuke, Minami Masayo, Tanimizu Masaharu

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 49 ( 0 ) page: 209 - 209   2002

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    DOI: 10.14862/geochemproc.49.0.209.0

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  205. Carbon, nitrogen and strontium isotope compositions of fossil bones from the bottom of lake or sea

    Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 49 ( 0 ) page: 142 - 142   2002

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    DOI: 10.14862/geochemproc.49.0.142.0

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  206. Strontium isotope ratio of sediments from Lake Biwa

    Minami Masayo, Oda Hirotaka, Kozima Sadao, Yokota Kiichiro, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 49 ( 0 ) page: 187 - 187   2002

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    DOI: 10.14862/geochemproc.49.0.187.0

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  207. AMS <14>^C ages of deer and human bones collected from British Columbia

    Minami Masayo, Chisholm Brian, Muto Hiroo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 12 ) page: 169 - 179   2001.3

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    We measured ^<14>C ages, carbon and nitrogen stable isotopic ratios of gelatin-collagens extracted from deer and human bones at British Columbia, Canada. The deer bone samples, samples #1〜#3,come from a site in the interior of British Columbia, designated as DhRa-02 site. The human bone samples, samples #4〜#6,are from the Pender Canal site, on North Pender Island, British Columbia. In general, reliable ^<14>C ages, carbon and nitrogen stable isotopic ratios can be obtained for collagens extracted from fossil bones, provided that the collagens have been preserved well from weathering in nature. Experimental yields of gelatin-collagens were higher than 0.7%, except for sample #1 with 0.25%. For sample #1,we tried to extract amino acid fractions by hydrolyzation and XAD-2 treatment and to measure its ^<14>C age. The age is the same as that of gelatin-collagen, about 1200 yrBP. Samples #1 and #2 are situated stratigraphically above a volvcanic ash, identified as Mazama tephra ca 6800 yrBP, and have post-ash dates, 1260 and 3010 yrBP, respectively. Sample #3 shows 3820 yrBP, younger than the age of Mazama tephra, though #3 comes from a pre-ash layer. Samples #4〜#6 have relatively high gelatin yields of 6〜9%, and show the ^<14>C ages of 3120〜3550 yrBP. The CO_2 yields from the gelatin-collagens of samples #1〜#6 are over 41%, consistent with the value of 40〜50% for gelatin-collagen extracted from fresh bones. Thus, the ^<14>C ages, carbon and nitrogen stable isotopic ratios obtained for the gelatin-collagens seem to be reliable. The deer bone samples #1〜#3 demonstrate δ^<13>C value of 〜-21‰ and δ^<15>N value of +5〜+8‰, which are the values of C3 millets. On the other hand, the human bone samples #4〜#6 show relatively high δ^<13>C value of -13‰ and δ^<15>N value of +18‰. It is thought that they ate marine products such as fishes and shellfishes, with δ^<13>C value of -15〜-20‰ and δ^<15>N value of +15〜+20‰, when they were alive. The high δ^<13>C and δ^<15>N values for the human bones are caused by the food resources.

    DOI: 10.18999/sumrua.12.169

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  208. Carbon-14 terrestrial ages of Antarctic meteorites with a Tandetron AMS at Nagoya University

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 12 ) page: 134 - 145   2001.3

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    Terrestrial age of meteorites gives us important informaion to estimate the terrestrial history of the meteorites. With the advent of AMS, the required sample mass of meteorite for measurement has been reduced as small as 0.1g. As a result, many more ^<14>C measurements have been performed intensively by the Toronto AMS group, Canada, the Arizona AMS group, USA, and so on. In Japan, AMS ^<14>C measurements of meteorites have been scarcely performed, to our regret. We have constructed a system to extract carbon from meteorites using a vacuum-tight RF melting method in order to study ^<14>C activities in meteorites, in a similar method used by the Arizona group. A meteorite powder sample mixed with pure iron chips is combusted in a RF furnace (Leco HF-10) in the presence of purified carbon-free oxygen in a closed vacuum-tight glass line system. The sample gases evolved are passed through MnO_2 and Pt/CuO traps, and then the CO_2 is separated in a liq.N_2 trap, by pumping out oxygen completely. The amount of ^<14>CO_2 is determined by a pressure transducer in a certain volume and diluted with a known amount of ^<14>C-free CO_2. The total CO_2 is graphitized by reducing with hydrogen in a Fe-powder catalyst and the produced graphite is measured of its ^<14>C concentration with a Tandetron accelerator mass spectrometer at the Center for Chronological Research, Nagoya University. Terrestrial ^<14>C ages of two Antarctic meteorites, Y-75102 from the Yamato icefield, ALH-77294 and ALH-77262 from the Allan Hills icefield, were determined. The age of Y-75102 is estimated 4.0±1.0 ka, the age of ALH-77294 is 19.5±1.2 ka, and the age of ALH-77262 is 28.5±0.9 ka. The ^<14>C ages on the meteorites roughly agree with the literature value. However, the results of the small-counter method (Fireman, 1983; Fireman and Norris, 1981) tend to be oldest, the results of the AMS method by Jull et al. (1984,1989b, 1998) are youngest, and our results of the AMS method are intermediate. The difference would be caused by analytical uncertainties, contamination in samples, incomplete fusion of samples and back-ground value in the extraction system. Y-74190,Y-75097 and Y-75108,which are thought to have fallen at the same time as Y-75102,gave similar ages of 〜4 ka, though Y-74190 gave a slightly younger age of 2.8 ka. These four chondrites might have fallen at the same time. Further studies are needed to improve analytical technique : reducing back-ground value of the extraction system and complete combustion of meteorites by such as longer heating time in RF furnace and use of much more combustion accelerator. It is indispensable to measure saturated ^<14>C activity of recently fallen meteorites with our extraction system. Furthermore, shielding or depth corrections are needed for ^<14>C terrestrial age determination of a meteorite sample if the meteoroid was very large or very small. We intend to obtan the other radioisotope data such as ^<10>Be to estimate the shielding effect. By normalizing the saturated activity of ^<14>C to that of ^<10>Be in a meteorite, more correct terrestrial age for the meteorite could be obtained.

    DOI: 10.18999/sumrua.12.134

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  209. Measurement of IAEA <14>^C standard materials with the 2nd Tandetron AMS machine at Nagoya University : estimates of precision and accuracy

    Nakamura Toshio, Oda Hirotaka, Niu Etsuko, Ikeda Akiko, Minami Masayo, Takahashi Hiroshi, Ohta Tomoko

    Summaries of Researches using AMS at Nagoya University   ( 12 ) page: 35 - 43   2001.3

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    A Tandetron accelerator mass spectrometer, an apparatus dedicated to high sensitivity radiocarbon (^<14>C) measurements, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure the ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archaeological materials, at the Center for Chronological Research (CCR), Nagoya University. A so-called second generation AMS ^<14>C apparatus manufactured by High Voltage Engineering Europe, BV, the Netherlands has been installed at CCR in 1997 and has been tested of its performance on ^<14>C measurements. The authors present here a brief review of the present performance and status of the Tandetron-I and Tandetron-II AMS systems. The ^<14>C measurement error (one sigma error) of the Tandetron-II is around +/-20-+/-40 years, which is clearly smaller than that of the Tandetron-I (around+/-50-+/-90 years). In addition, the reproducibility tests of ^<14>C measurements for the IAEA C1-C8 ^<14>C standards suggests that accuracy of ^<14>C measurement can be as good as around 0.5%.

    DOI: 10.18999/sumrua.12.35

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  210. British Columbiaから採取された獣骨および人骨のAMS14C年代

    南 雅代・Chisholm, B.・武藤宏男・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XII   page: 169-179   2001

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  211. 南極隕石の落下14C年代測定

    南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XII   page: 134-145   2001

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  212. An extraction system to measure carbon-14 terrestial ages of meteorites with a Tandetron AMS at Nagoya University Reviewed

    Minami, M. and Nakamura, T.

    Radiocarbon   Vol. 43 ( 2A ) page: 263-270   2001

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  213. An extraction system to measure carbon-14 terrestrial ages of meteorites with a tandetron AMS at Nagoya University

    Minami M, Nakamura T

    RADIOCARBON   Vol. 43 ( 2A ) page: 263 - 269   2001

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  214. An extraction system to measure carbon-14 terrestrial ages of meteorites with a tandetron AMS at Nagoya University

    Minami M.

    Radiocarbon   Vol. 43 ( 2 PART I ) page: 263 - 269   2001

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    Publisher:Radiocarbon  

    DOI: 10.1017/s0033822200038091

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  215. The procedure and accuracy of INAA for geological materials by new γ-ray counting and data processing system at Radioisotope Center in Nagoya University

    SHIBATA Shin-nosuke, TANAKA Tsuyoshi, MINAMI Masayo, SENDA Ryoko, TAKEBE Masamichi, KACHI Takuya, KONDO Masashi, ODA Shuhei, HAYASHI Takamasa, NISHIZAWA Kunihide, KOJIMA Hisashi

    Bulletin of the Nagoya University Museum   ( 17 ) page: 15 - 32   2001

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    A new gamma-ray counting and data processing system for non-destructive neutron activation analysis has been set up in Radioisotope Center in Nagoya University. The system carry out gamma-ray counting, sample change and data processing automatically, and is able to keep us away from parts of complicated operations in INAA. In this study, we have arranged simple analytical procedure that makes practical works easier than previous. The concrete flow is described from the preparation of powder rock samples to gamma-ray counting and data processing by the new INAA system. Then it is run over that the analyses used two Geological Survey of Japan rock reference samples JB-1a and JG-1a in order to evaluate how the new analytical procedure give any speediness and accuracy for analyses of geological materials. Two United States Geological Survey reference samples BCR-1 and G-2 used as the standard respectively. Twenty two elements for JB-1a and 25 elements for JG-1a were analyzed, the uncertainty are <5% for Na, Sc, Fe, Co, La, Ce, Sm, Eu, Yb, Lu, Hf, Ta and Th, and of <10% for Cr, Zn, Cs, Ba, Nd, Tb and U. This system will enable us to analyze more than 1500 geologic samples per year.

    DOI: 10.18999/bulnum.017.03

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  216. Deriving AMS Radiocarbon Age of Fossil Bone by Pretreatment with XAD-2 Resin : Comparison with the Gelatin Extraction Method

    MINAMI Masayo, NAKAMURA Toshio

    The Quaternary Research (Daiyonki-Kenkyu)   Vol. 39 ( 6 ) page: 547 - 557   2000.12

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    Accurate radiocarbon (<sup>14</sup>C) and carbon isotope measurements of fossil bones require complete removal of all exogenous carbon. XAD-2 chromatography was used to eliminate the foreign organic matter from bones. The fossil bones used in the experiment were animal bone fragments collected at the Awazu submarine archeological site. The bone samples were demineralized with 0.8M HCl at 4&deg;C, and the acid-insoluble residue was concentrated by centrifugation and lyophilized. The demineralized bone powder was hydrolysed with 6M HCl at 110&deg;C. Solid components were removed by centrifugation before the filtered hydrolysate was passed through the XAD-2 resin used for removal of fulvic acids. In addition, the gelatin extraction method of decalcification in a cellulose tube with 1.2M HCl, followed by heating at 90&deg;C in water was used for the same species to compare the ability of the two methods to remove organic contaminants.<br>The purified hydrolysates obtained from XAD-2 chromatography have more positive &delta;<sup>13</sup>C values and older <sup>14</sup>C ages than gelatin collagens extracted from hot water. The difference tends to become greater for poorly preserved fossil bones containing less than 0.7% collageneous materials. The fulvic phases give apparently younger ages and significantly more negative &delta;<sup>13</sup>C values than bone organic carbon. Furthermore, the XAD-treated hydrolysates of gelatin collagens give the same <sup>14</sup>C ages (older than those of gelatin collagens) as the XAD-purified hydrolysates. The result indicates that the gelatin extraction method is sufficient for <sup>14</sup>C dating on well-preserved bones, but insufficient on poorly preserved bones, because hot-water extraction does not totally remove exogenous organic carbon. Therefore, XAD-2 resin is recommended for accurate <sup>14</sup>C and carbon isotope measurements.

    DOI: 10.4116/jaqua.39.547

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  217. AMS radiocarbon age for fossil bone by XAD-2 chromatography method

    Minami M, Nakamura T

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 172   page: 462 - 468   2000.10

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  218. The HVEE Tandetron AMS system at Nagoya University

    Nakamura T, Niu E, Oda H, Ikeda A, Minami M, Takahashi H, Adachi M, Pals L, Gottdang A, Suya N

    NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS   Vol. 172   page: 52 - 57   2000.10

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  219. Contributions of anthropogenic and biogenic CO_2 to the atmosphere at an urban forest in winter season and their diurnal variations of vertical profiles

    Takahashi Hiroshi A., Konohira Eiichi, Hiyama Tetsuya, Minami Masayo, Takahashi Atsuhiro, Oguri Hideyuki, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 11 ) page: 88 - 99   2000.3

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    Diurnal variations of carbon isotopic compositions (Δ^<14>C and δ^<13>C) of atmospheric CO_2 as well as concentration in an urban area on 9 February, 1999 were measured. The carbon isotopic approach in the present study discriminated quantitative contributions from the several CO_2 sources, i.e., background, anthropogenic and biogenic components, in the urban atmosphere. The diurnal variations in vertical profiles in anthropogenic and biogenic components within the forest were estimated, and their contributions were ranged from 1.3 to 15.8% and from 1.6 to 7.8%, respectively. There was a little variation vertically at each time in the respective components, whereas anthropogenic CO_2 fluctuated largely according to the total atmospheric CO_2 variation. On the other hand, the biogenic CO_2 concentration remained relatively constant throughout the day. With regard to the vertical profiles, the biogenic contribution increases from the top to the floor of the forest with smooth gradient, while the anthropogenic contribution shows the mirror image profile against biogenic one. Both of them showed the large gradual change especially during the night.

    DOI: 10.18999/sumrua.11.88

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  220. The <14>^C AMS facility of the Nagoya University : achievements and present status of the Tandetron-I

    Nakamura Toshio, Oda Hirotaka, Ikeda Akiko, Niu Etsuko, Minami Masayo, Yoshioka Shigeo, Ohta Tomoko, Takahashi Hiroshi, Adachi Mamoru

    Summaries of Researches using AMS at Nagoya University   ( 11 ) page: 38 - 50   2000.3

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    A Tandetron accelerator mass spectrometer, an apparatus dedicated to high sensitivity radiocarbon (^<14>C) measurements, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure the ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archaeological materials, at the Dating and Materials Research Center, Nagoya University. The authors present here a brief review of the present performance and some archaeological and geological applications of the Tandetron-I AMS, as well as a brief introduction to application field of ^<10>Be measurements. After the second AMS machine goes into routine operation, the main purpose of the Tandetron-I AMS will be shifted towards ^<10>Be measurements. Some hardware and software tools are in preparation now for the ^<10>Be measurements.

    DOI: 10.18999/sumrua.11.38

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  221. An attempt to measure carbon-14 terrestrial ages of Antarctic meteorites with a Tandetron AMS at Nagoya University

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 11 ) page: 100 - 112   2000.3

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    Terrestrial age of meteorites gives us important information to estimate the terrestrial history of the meteorites. With the advent of AMS, the required sample mass of meteorite for measurement has been reduced as small as 0.1g. As a result, many more ^<14>C measurements have been performed intensively by the Toronto AMS group, Canada, the Arizona AMS group, USA, and so on. In Japan, AMS ^<14>C measurements of meteorites have been scarcely performed, to our regret. We are now at the early stage of the program for studying ^<14>C activities in meteorites, and constructing a system to extract ^<14>C from meteorites, in a similar method used by the Arizona group. A meteorite powder sample mixed with pure iron chips is combusted in a RF furnace (Leco HF-10) in the presence of purified carbon-free oxygen in a closed vacuum-tight glass line system. The sample gases evolved are passed through MnO_2 and Pt/CuO traps, and then the CO_2 is separated in a liq.N_2 trap, by pumping out oxygen completely. The amount of ^<14>CO_2 is determined by a pressure transducer in a certain volume and diluted with a known amount of ^<14>C^free CO_2. The total CO_2 is graphitized by reducing with hydrogen in a Fe-powder catalyst and the produced graphite is measured of its ^<14>C concentration with a Tandetron accelerator mass spectrometer at the Dating and Materials Research Center, Nagoya University. Extraction yields of CO_2 using the above method which employs RF melting of steel standards of known carbon content were about 90%. The new extraction procedure gave higher extraction yields and older ^<14>C ages than those using the old extraction method. Carbon yields of two Antarctic meteorites (Y-75102 and ALH-77294), however, were significantly low, and the carbon-14 terrestrial ages for the meteorites were different from the reported values. The results might be caused by imperfect combustions of the meteorites and high blanks from the crucible with iron chips alone. Further studies are needed to improve analytical techniques.

    DOI: 10.18999/sumrua.11.100

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  222. Carbon and nitrogen isotope fractionations of collagen by chemical treatment : mainly by XAD-2 treatment

    Minami Masayo

    Summaries of Researches using AMS at Nagoya University   ( 11 ) page: 231 - 238   2000.3

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    XAD-2 rasin is considered a good material to separate quantiatively polar amino acids from less polar fulvic and humic acids, which are predominant sources of error in ^<14>C and stable isotope analysis on collagen of fossil bone. To evaluate if XAD-2 treatment affects carbon and nitrogen isotope values, Minami (1999) measured δ^<13>C and δ^<15>N on several extracted fractions of collagens from modern bovine Achilles heel tendons made of Sigma Chemical and Nacalai Tesque. There were about +1.0‰ difference in δ^<13>C and about -0.1‰ in δ^<15>N between hydrolyzed collagen and XAD-treated collagen hydrolysates from modern collagen standards. On the other hand, the carbon and nitrogen isotope fractionations were about -0.6‰ and +0.3‰ in δ^<15>N, respectively, on animal fossil bones collected from collected from the Awazu submarine archeological site in this study. The C/N ratios, δ^<13>C and δ^<15>N values of extracted fractions : decalcified, hydrolyzed and XAD-treated hydrolysate fractions, vary as chemical extraction proceeded. The change of the isotope values, which differ between fossils and modern collagens, might be caused by purification of collagen, decomposition of a part of collagen, and combined changes in amino acid composition in collagen. The XAD-treatment affected amino acid compositions on both fossils and modern collagen standards. Since there was no difference in both δ^<13>C and δ^<15>N values by XAD-2 treatment on amino acid standards (Minami, 1999), the isotope fractionation with XAD-2 resin on the collagens can not be due to the total isotope variation of individual amino acids, but be due to the change of amino acid compositions. We need to further study the effect of chemical treatment with HCl on carbon and nitrogen isotope ratios of collagen with XAD-2 resin.

    DOI: 10.18999/sumrua.11.231

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  223. AMS radiocarbon age for fossil bones by XAD-2 chromatography method Reviewed

    Minami, M. and Nakamura, T.

    Nucl.Instr.andMeth.in Phys.Res.   Vol. B172   page: 462-468   2000

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  224. XAD-2樹脂処理法による化石骨のAMS14C年代 Reviewed

    南 雅代・中村俊夫

    第四紀研究   Vol. 39   page: 547-557   2000

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  225. The HVEE Tandetron AMS system at Nagoya University Reviewed

    Nakamura, T., Niu, E., Oda, H., Ikeda, A., Minami, M., Takahashi, H., Adachi, M., Pals, L.

    Nucl.Instr.and Meth.in Phys.Res.   Vol. B172   page: 52-57   2000

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  226. 南極隕石の落下14C年代測定の試み

    南 雅代・中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XI   page: 100-112   2000

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  227. 化学処理によるコラーゲンの炭素・窒素同位体比の変化-主にXAD-2樹脂処理について-

    南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XI   page: 231-238   2000

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  228. AMS radiocarbon age for fossil bone by XAD-2 chromatography method

    Minami M.

    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   Vol. 172 ( 1-4 ) page: 462 - 468   2000

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    Publisher:Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms  

    DOI: 10.1016/S0168-583X(00)00397-9

    Scopus

  229. The HVEE tandetron AMS system at Nagoya University

    Nakamura T.

    Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms   Vol. 172 ( 1-4 ) page: 52 - 57   2000

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    Publisher:Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms  

    DOI: 10.1016/S0168-583X(00)00398-0

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  230. Carbon and nitrogen isotope fractionations of collagen by treatment with XAD-2 adsorption resin

    Minami Masayo

    Summaries of Researches using AMS at Nagoya University   ( 10 ) page: 235 - 242   1999.3

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    DOI: 10.18999/sumrua.10.235

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  231. The <14>^C AMS facility of the Nagoya University : present status of the Tandetron-I and -II AMS systems

    Nakamura Toshio, Oda Hirotaka, Ikeda Akiko, Niu Etsuko, Minami Masayo, Yoshioka Shigeo, Ohta Tomoko, Takahashi Hiroshi A., Adachi Mamoru, Pals Ludi

    Summaries of Researches using AMS at Nagoya University   ( 10 ) page: 5 - 17   1999.3

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    A Tandetron accelerator mass spectrometer, an apparatus dedicated to high sensitivity radiocarbon (^<14>C) measurements, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure the ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archaeological materials, at the Dating and Materials Research Center, Nagoya University. The authors present here a brief review of the present performance and some archaeological and geological applications of the Tandetron-I AMS, as well as a brief introduction to a so-called second generation AMS machine, an AMS ^<14>C dating apparatus, currently of the highest performance, manufactured by High Voltage Engineering Europe, BV, the Netherlands, which has been recently installed at the Dating and Materials Research Center. Results of the recent performance tests of the Tandetron-II AMS machine are briefly described.

    DOI: 10.18999/sumrua.10.5

    CiNii Article

  232. AMS <14>^C age of a Molar fossil of Maumann's elephant : with XAD-2 resin

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 10 ) page: 139 - 148   1999.3

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    The predominant contaminants such as humic and fulvic acids affect ^<14>C date and stable isotope analyses in fossil bone. The XAD-2 treatment of collagen hydrolysate is considered an effective method to eliminate the foreign organic matter from bone. In this study, we have conducted ^<14>C dating, by the XAD-2 method, on a molar fossil of Naumann's elephant (Palaeoloxodon naumanni) collected from the Uwa-sea, offshore Natori-kajitanihana, Nishi-Uwa-gun, Ehime prefecture. The ^<14>C date of 29,200±870 yr BP was already obtained for gelatin collagen by gelatin-extraction method of decalcification in a cellulose tube with 1.2N HCl, followed by heating at 90℃ in water (Nakamura et al., 1998). Three parts of dentine, enamel and cement in the molar fossil were separated for each ^<14>C dating. The samples were decalcificated with 4℃, 0.8N HCl and the acid-insoluble residues were concentrated by centrifugation and lyophilized. The demineralized fractions were hydrolysed with 6N HCl at 110℃. The filtered hydrolysates were passed through the XAD-2 resin to remove fulvic and humic acids. Dentine phase in the molar fossil gives older ^<14>C age than enamel and cement phases. It is thought that the dentine, covered with enamel and cement phases, is better-preserved. The ^<14>C age of the XAD-purified hydrolysates (XAD) is older than that of solution collagen (SC), but coincide with age of gelatin collagen (GC) in dentine phase. Enamel phase gives different C/N ratio, δ ^<13>C and δ ^<15>N values from those of dentine and cement phases, and relatively younger age, which indicates that the majority of enamel protein has decomposed and changed to hydroxyapatite. All fulvic fractions (F) of three phases give significantly younger ages than bone organic carbon. The molar fossil might be well-preserved because of the higher yield (1.22%) of gelatin collagen more than 1%. The gelatin-extraction method is sufficient for ^<14>C dating on the well-preserved fossil.

    DOI: 10.18999/sumrua.10.139

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  233. AMS <14>^C age of Japanese wolf collected from the cave at Mt. Kyozyo in Izumi-mura, Yashiro-gun, Kumamoto Prefecture

    Minami Masayo, Kitamura Naoshi, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 10 ) page: 189 - 198   1999.3

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    DOI: 10.18999/sumrua.10.189

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  234. AMS 14C age of Japanese wolf collected from the cave at Mt. Kyonojo in Izumi-mura, Yashiro-gun, Kumamoto prefecture

      Vol. X   page: 189-198   1999

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  235. Carbon and nitrogen isotope fractionations of collagen by treatment with XAD-2 adsorption resin

      Vol. X   page: 235-242   1999

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  236. AMS 14C age of a Molar fossil of Naumann's elephant -with XAD-2 resin-

      Vol. X   page: 139-148   1999

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  237. A whole skerton of a Japanese Wolf collected from a cave at Mt. Kyonojo in Izumi-mura, Yatsushiro-gun, Kumamoto Prefecture

      Vol. 11   page: 35-69   1999

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  238. Y-Ho fractionation and lanthanide tetrad effect observed in cherts

    Minami Masayo, Masuda Akimasa, Takahashi Kazuya, ADACHI Mamoru, SHIMIZU Hiroshi

    Geochemical journal : journal of the Geochemical Society of Japan   Vol. 32 ( 6 ) page: 405 - 419   1998.12

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    Publisher:一般社団法人日本地球化学会  

    The abundances of rare earth elements (REE) and Y in cherts were precisely determined by ICP-MS: the Archean Marble Bar Chert from the Pilbara Block, Western Australia, Triassic cherts from central Japan, and Cretaceous deep-sea cherts from central Pacific and the Caribbean Sea. Both of W-type and M-type REE patterns are observed for the studied cherts and, in particular, clear W-type tetrad effect is observed for the Archean Marble Bar banded cherts. Appearance of tetrad effect phenomenon is related to their Fe<sub>2</sub>O<sub>3</sub><sup>&lowast;</sup> (total iron as Fe<sub>2</sub>O<sub>3</sub>) and Al<sub>2</sub>O<sub>3</sub> concentrations. The cherts relatively enriched in Fe<sub>2</sub>O<sub>3</sub><sup>&lowast;</sup> show W-type tetrad effect, while that enriched in Al<sub>2</sub>O<sub>3</sub> tends to show M-type tetrad effect. Therefore, impure clastic detritus in the cherts might be responsible for M-type tetrad effect. It is worthwhile noting that, irrespective of their REE patterns of W-type and M-type tetrad and little tetrad effects, the cherts chiefly show non-chondritic Y/Ho ratios between 13 and 27, negative deviations from chondritic value around 28, in contrast with seawaters and limestones characterized by strongly higher Y/Ho ratios ranging from 50 to 80 than the chondritic value. Among the cherts, the lowest Y/Ho ratios between 13 and 18 are observed for the Marble Bar yellowish gray cherts, which suffered disturbance of geochemical features by thermal events at ca. 2.5 Ga. It has been widely recognized that both of Y-Ho fractionation and lanthanide tetrad effect are phenomena observed in the marine environment. However, Y-Ho fractionation is not closely associated with lanthanide tetrad effect. Y-Ho fractionation is suggested to be related to the ligand that dominates the chemical complex in aqueous system, from our results and the observation that silicate-rich part and carbonate-rich part in banded iron formations show lower and higher Y/Ho ratios than the chondritic value, respectively. On the other hand, tetrad effect in the cherts is related to impurity minerals such as Fe-oxides and clastic detritus, with which REE might well by associated. It is interesting that the Archean banded charts, not containing organic nor detrital materials, display clear W-type tetrad effect coupled with slightly lower Y/Ho ratios than chondritic ratio.

    DOI: 10.2343/geochemj.32.405

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  239. Isotope fractionation by XAD-2 treatment

    MINAMI Masayo, IKEDA Akiko

    Summaries of Researches using AMS at Nagoya University   Vol. 9   page: 308 - 311   1998.3

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    XAD-2 resin is considered the good materials to separate quantitatively the polar amino acids from the less polar fulvic and humic acids. To evaluate if XAD-2 treatment affects isotope values, δ ^<13>C and δ ^<15>N were measured on bulk sample by a simple preparation, gelatin-collagen extracted by usual method, decalcified bone powder and XAD-purified hydrolysates from a modern well-preserved ivory sample "IVRY-1". Among three fractions of bulk, gelatin-collagen and decalcified ivory powder, there are almost no difference in both δ ^<13>C and δ ^<15>N. On the other hand, XAD-treated hydrolysate has apparently more positive δ ^<13>C and δ ^<15>N values than the three fractions. However, it is doubt whether the result is due to isotope fractionation by XAD-2 treatment because the fulvic and humic contamination in the collagen might affect isotope values of bulk, gelatin-collagen and decalcified ivory powder. The C/N ratio in fulvic and humic phases is significantly more higher than collagen. In the next study, we have to study modern collagen standards or amino acid standards to evaluate if XAD-2 resin introduce isotope fractionation.

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  240. Analytical note of stable nitrogen isotopic measurements with MAT-252 mass spectrometer at Dating and Materials Research Center, Nagoya University

    MINAMI Masayo, AOKI Hiroshi, NAKAMURA Toshio

    Summaries of Researches using AMS at Nagoya University   ( 9 ) page: 316 - 323   1998.3

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    This paper provides a basic experimental information of stable nitrogen isotopic measurements with MAT-252 mass spectrometer (Finnigan MAT Ltd.) at Dating and Materials Research Center, Nagoya University, and a refining method of N_2 gas from sample gas on vacuum line. The ion output voltage from 28 collector is directly proportional to N_2 gas pressure. In case that ion output voltage from 28 collector of N_2 gas is more than 1.6V, the ratio of [29]/[28] hardly varies according to the output voltage, and the pressure effect on nitrogen isotopic ratios can be disregarded. The 28 ion output voltage of 2.5V (N_2 gas pressure around 38mb) is recommended on normal measurements. Only N_2 gas can be separated and refined from a sample gas by means of molecular sieves on vacuum line for refining CO_2. The δ^<13>C values do not change by collecting N_2.

    DOI: 10.18999/10.19999/sumrua.9.316

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  241. Status Report of ^<14>C Measurements with the First Tandetron AMS at Nagoya University in the Year of 1997 and Installation of a Second-Generation High-Performance AMS System

    NAKAMURA Toshio, ODA Hirotaka, IKEDA Akiko, MINAMI Masayo, ADACHI Mamoru

    Summaries of Researches using AMS at Nagoya University   ( 9 ) page: 126 - 139   1998.3

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    A Tandetrno accelerator mass spectrometer (AMS), an apparatus dedicated to radiocarbon (^<14>C) measurements with high sensitivity, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure ^<14gt;C concentrations of environmental samples as well as ^<14>C dates of geological and archeological materials at the Dating and Materials Research Center (DMRC), Nagoya University. No serious problem has occurred with the machine, which resulted in that 770 samples were measured in 1997,and totally 7,371 samples in various fields have been measured since the installation of the machine. Though the Tandetron AMS has been operated intensively, the number of samples analyzed annually is rather limited to several hundreds which is far smaller than the number of samples brought to the DMRC by many users from various research fields, mainly owing to lower negative current intensity from an ion source (HICONEX-844,modified for loading 18 targets at a time), as well as a rather low throughput of the total system. We could have fortunately introduced a new-generation Tandetron which is manufactured by High Voltage Engineering Europe (HVEE) BV, the Netherlands. Two sets of similar HVEE AMS system have been installed successfully at the University of Groningen, Holland, and at the University of Christian-Albrechts, Kiel, Germany. They have already shown excellent performances in carbon-isotope-ratio measurments : reproducibility of ^<12>C/^<13>C ratio as ±0.1%; error and reproducibility of ^<14>C/^<12>C ratio as ±0.15%-±0.22% and ±0.3%, respectively. We are planning to perform high accuracy and high precision ^<14>C dating of mainly cultural property materials of historical age, archeological and geological samples, by using the new-generation machine.

    DOI: 10.18999/10.19999/sumrua.9.126

    CiNii Article

  242. AMS ^<14>C Age of Collagen Separated from a Molar Fossil of Naumann's Elephant Collected from the Uwa-sea, Ehime Prefecture

    NAKAMURA Toshio, OHTA Tomoko, MIYAMOTO Masazo, MINAMI Masayo, ODA Hirotaka, IKEDA Akiko

    Summaries of Researches using AMS at Nagoya University   ( 9 ) page: 286 - 297   1998.3

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    Publisher:Nagoya University  

    We have conducted ^<14>C dating, with a Tandetron accelerator mass spectrometer (AMS) at Nagoya University, on carbon from collagen fractions extracted from a molar tooth fossil of Naumann's elephant (Palaeoloxodon naumanni) collected from the Uwa-sea, offshore Natori-Kajitanihana, Nishi-Uwa-gun, Ehime prefecture. The molar fossil was cleaned on the surface with a steel brush and a dental grinder, treated with 0.5M NaOH solution, and ground into powder. Two sets of the powdered sample, about 3.8g and 4.9g each, were demineralized with 1.2N HCl in a cellulose tube to extract collagen. After demineralization, HCl was completely removed from the tube by dialysis. Then the solution fraction in the tube was separated by centrifuge, and freeze-dried to get a solution-collagen fraction. Solid remains were put in a Pyrex tube with 20ml of distilled water and heated at 90℃ for 10 hours to extract the water soluble gelatin-collagen fraction. Collagen was oxidized, using CuO to produce CO_2,in a Vycor tube at 950℃ for an hour. A small aliquot of the CO_2 was analyzed for its' stable carbon isotope ratio, δ ^<13>C_<PDB>, using a triple-collector mass spectrometer (MAT-252). To produce graphite, the remaining CO_2 was reduced by hydrogen, with an Fe-powder catalyst, in a Vycor tube at 650℃ for several hours. The sample graphite was analyzed for its' ^<14>C/^<13>C ratio, relative to that of an oxalic acid standard (NBS-SRM-4990). In general, reliable ^<14>C dates can be obtained for collagen fractions extracted from the fossil sample, provided that the collagen fractions have been preserved well from weathering in nature. Experimental yields of collagen fractions were relatively high, ranging from 1.22 to 1.51%. The CO_2 yield from the gelatin collagen fraction was 42%, being consistent with the values of 41-42% for gelatin collagen extracted from fresh bone samples. On the other hand, the CO_2 yield from the solution fraction was 25%, being lower than the values of 41-42%. Thus the ^<14>C date of 29,200±870 yr BP, obtained for the gelatin collagen fraction, seems to be reliable and can be assigned as the age of the molar fossil sample, though the ^<14>C date is about 4,000 years older than the value of 24,880±580 yr BP obtained for the solution collagen fraction. The δ ^<13>C_<PDB> values of -20.2‰ for the both gelatin and solution collagen fractions were consistent with accepted δ ^<13>C_<PDB> values, of from -21 to -23‰ for herbivorous mammals.

    DOI: 10.18999/10.19999/sumrua.9.286

    CiNii Article

  243. Approximate estimation method of the degree of lanthanide tetrad effect and application to the tetrad effects in lanthanide ionic radii

    Minami M, Masuda A

    JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS   Vol. 177   page: 1021 - 1022   1998.1

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  244. Approximate estimation method of the degree of lanthanide tetrad effect and application to the tetrad effects in lanthanide ionic radii

    Minami M.

    Journal of Magnetism and Magnetic Materials   Vol. 177-181 ( PART 2 ) page: 1021 - 1022   1998.1

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    Publisher:Journal of Magnetism and Magnetic Materials  

    DOI: 10.1016/S0304-8853(97)00957-8

    Scopus

  245. Approximate estimation method of the degree of lanthanide letrad effect and application to the tetrad effects in lanthanide ionic radii Reviewed

    Minami, M. and Masuda, A.

    Journal of Magnetism and Magnetic Materials   Vol. 180   page: 1021-1022   1998

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  246. Isotope fractionation by XAD-2 treatment

      Vol. IX   page: 308-311   1998

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  247. Extraction and radiocarbon dates of amino acids in fossil bones

      Vol. IX   page: 46-54   1998

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  248. Comparison of AMS radiocarbon ages between amino acids and collagens in fossil bones Reviewed

    Minami, M. and Nakamura, T.

    Chinese Science Bulletin   Vol. 43   page: 89   1998

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  249. Analytical note of stable nitrogen isotopic measurements with MAT-252 mass spectrometer at Dating and Materials Research Center, Nagoya University

      Vol. IX   page: 316-323   1998

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  250. Y-Ho fractionation and lanthanide tetrad effect observed in cherts

    Minami M, Masuda A, Takahashi K, Adachi M, Shimizu H

    GEOCHEMICAL JOURNAL   Vol. 32 ( 6 ) page: 405 - 419   1998

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  251. Status Report of <14>^C Measurements with a Tandetron AMS at Nagoya University in the Year of 1996 and Installation of a second-Generation High-Performance AMS System

    Nakamura Toshio, Ikeda Akiko, Ohta Tomoko, Minami Masayo, Adachi Mamoru

    Summaries of Researches using AMS at Nagoya University   ( 8 ) page: 56 - 67   1997.3

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    A Tandetron accelerator mass spectrometer (AMS), an apparatus dedicated to radiocarbon (^<14>C) measurements with high sensitivity, manufactured by General Ionex Corporation, USA, has been used since 1983 to measure ^<14>C concentrations of environmental samples as well as ^<14>C dates of geological and archeological materials at the Dating and Materials Research Center (DMRC), Nagoya University. No serious problem has occurred with the machine, which resulted in that 708 samples were measured in 1996,and totally 6,300 samples in various fields have been measured since the installation of the machine. Though the Tandetron AMS has been operated intensively, the number of samples analyzed annually is rather limited to several hundreds which is far smaller than the number of samples brought to the DMRC by many users from various research fields, mainly owing to lower negative current intensity from an ion source (HICONEX-844,modified for loading 18 targets at a time), as well as a rather low throughput of the total system. We could have fortunately introduced a new-generation Tandetron which is manufactured by High Voltage Engineering Europe (HVEE) BV, the Netherlands. Two sets of similar HVEE AMS system have been installed successfully at University of Groningen, Holland, and at University of Christian-Albrechts, Kiel, Germany. They have already shown excellent performances in carbon-isotope-ratio measurements : reproducibility of ^<12>C/^<13>C ratio as ア0.1% ; error and reproducibility of ^<14>C/^<12>C ratio as ア0.15-0.22% and ア0.3%, respectively. We are planning to perform high accuracy and high precision ^<14>C dating of mainly cultural property materials of historical age, archeological and geological samples, by using the new-generation machine.

    DOI: 10.18999/sumrua.8.56

    CiNii Article

  252. AMS Radiocarbon Dates of Wood, Mammalian Bone and Shell Fossils Collected from the Same Horizons of a Shell Mound Excavated at Awazu Submarine Archeological Site, Shiga Prefecture

    Nakamura Toshio, Ohta Tomoko, Iba Isao, Minami Masayo, Ikeda Akiko

    Summaries of Researches using AMS at Nagoya University   ( 8 ) page: 237 - 246   1997.3

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    The Awazu submarine archeological site, 2-3 meters below the water surface, is located at southern basin of Lake Biwa, near the mouth of Seta River flowing out of the Lake Biwa. A shell mound was excavated during the 1990-1991 year survey of the site. Seven sets of wood, mammalian bone, and shell fossil samples collected from the same layers of the shell mound were dated with the AMS radiocarbon method. The ^<14>C dates for each of the three kinds of samples did not show big difference between the seven layers. This tendency is consistent with the fact that the shell mound was formed within ca. 100 years, because pottery fragments of the Funamoto-I type, which corresponds to early stage of the middle Jomon, were preferentially discovered from this shell mound. However, ^<14>C dates were systematically different among three types of samples : shell fossil samples showed the oldest dates from 4800-5080yr BP, except for a very young date (4630+/-80yrBP); wood samples did the middle ones (4570-4760yrBP); and bone fragment samples did the youngest ones (4090-4430yrBP). The reasons for the difference of ^<14>C dates among the three kinds of samples collected from the same horizons are not clarified yet. Shell carbonate originates from dissolved inorganic carbon in the lake water, which carbon was produced partly in the dissociation of old organic materials in the lake sediment and was also added with dead carbon from limestone rock surrounding Lake Biwa. In addition, younger carbon contaminated the bone samples when the samples were in the sediment may not have been removed completely during chemical preparation procedures of the samples.

    DOI: 10.18999/sumrua.8.237

    CiNii Article

  253. An attempt on accurate radiocarbon and carbon isotope measurements of fossil bone

    Minami Masayo, Nakamura Toshio

    Summaries of Researches using AMS at Nagoya University   ( 8 ) page: 247 - 253   1997.3

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    Publisher:Nagoya University  

    Accurate radiocarbon (^<14>C) and carbon isotope measurements on fossil bones require that all exogenous carbon be removed. The remove the foreign organic carbon and obtain reliable ^<14>C ages from bones, XAD-2 chromatography method was examined. The fossil bones used in the experiment were bone fragments collected from the Awazu submarine archeological site. The bone samples were demineralized with 4℃ 0.8N HCl and the acid-insoluble residue was concentrated by centrifugation and lyophilized. The demineralized bone powder was hydrolysed with 6N HCl at 110℃. Solids were removed by centrifugation before the filtered hydrolysate was passed through the XAD-2 resin to remove fulvic and humic acids. δ^<13>C values and ^<14>C ages for three fractions of decalcified bone powder, XAD-treated hydrolysate, and fulvic and humic acids in demineralization-hydrolysis-XAD treatment procedure. XAD-purified hydrolysates have more positive δ^<13>C values and older ^<14>C ages than gelatin collagen extracted by conventional method. The δ^<13>C values in fulvic and humic phases are significantly more negative than collagen fractions. Conventional collagen extraction method is sufficient for ^<14>C dating on well-preserved bones but insufficient on poorly-preserved bones, because the method does not totally remove exogenous organic carbon. XAD-2 resin is recommended for accurate ^<14>C and carbon isotope measurements.

    DOI: 10.18999/sumrua.8.247

    CiNii Article

  254. *Approximate estimation of the degree of lanthanide tetrad effect from the data potentially involving all lanthanides Reviewed

    Minami, M. and Masuda, A.

    Geochemical Journal   Vol. 31   page: 125-133   1997

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  255. An attempt on accurate radiocarbon and carbon isotope measurements of fossil bone

      Vol. VIII   page: 247-253   1997

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  256. Approximate estimation of the degree of lanthanide tetrad effect from the data potentially involving all lanthanides

    Minami M.

    Geochemical Journal   Vol. 31 ( 3 ) page: 125 - 133   1997

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    Publisher:Geochemical Journal  

    DOI: 10.2343/geochemj.31.125

    Scopus

  257. Geochronological and geochemical study for the Archean cherts in Pilbara Block, Western Australia

    Minami Masayo

    Chikyukagaku   Vol. 31 ( 4 )   1997

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    Publisher:The Geochemical Society of Japan  

    DOI: 10.14934/chikyukagaku.31.244

    CiNii Article

  258. Two Archean Sm-Nd ages of 3.2 and 2.5 Ga for the Marble Bar Chert, Warrawoona Group, Pilbara Block, Western Australia

    MINAMI Masayo, SHIMIZU Hiroshi, MASUDA Akimasa, ADACHI Mamoru

    Geochemical journal : journal of the Geochemical Society of Japan   Vol. 29 ( 6 ) page: 347 - 362   1995.12

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    Publisher:一般社団法人日本地球化学会  

    Isotopic data of Sm-Nd, La-Ce and Rb-Sr systems, rare earth element (REE) abundances and major element compositions are reported for the Archean Marble Bar Chert from the Towers Formation of the Salgash Subgroup, Warrawoona Group, Pilbara Block, Western Australia. The Marble Bar Chert records two Sm-Nd ages; 3.2&plusmn;0.3 Ga for red (or black) and white banded cherts and 2.5&plusmn;0.2 Ga for yellowish gray cherts. These ages contain relatively large uncertainties and are younger than 3.45 Ga U-Pb zircon ages previously reported for the Salgash Subgroup. The results imply some later perturbation in Sm-Nd system of these cherts after their formation. However, the older age of 3.2&plusmn;0.3 Ga is close to the U-Pb zircon ages for the Salgash Subgroup within analytical errors and therefore can be regarded as the formation time of the banded cherts. On the other hand, the younger age of 2.5&plusmn;0.2 Ga for the yellowish gray cherts is thought to reflect the time of later thermal events and the cherts do not retain their original chemical features. The 3.2 Ga Sm-Nd age for the Marble Bar banded cherts is the first Archean record obtained for the Archean cherts; their initial &epsilon;<sub>Nd</sub> value of +1.0&plusmn;3.0 holds the original nature at their formation without severe geochemical disturbance. The obtained mantle-like depleted or chondritic feature at 3.2 Ga for the banded cherts, together with their SiO<sub>2</sub> and Fe<sub>2</sub>O<sub>3</sub>&lowast; data and positive Eu anomalies in REE patterns, suggests substantially large contribution of hydrothermal solution derived from depleted- or chondritic-mantle to the cherts and inorganic origin of the cherts, which contrasts to Phanerozoic biogenic cherts.

    DOI: 10.2343/geochemj.29.347

    Scopus

    CiNii Article

  259. Experimental studies on behaviors of lanthanides in interaction between water and basaltic rock grains : Bearings of tetrad effect on conditions Reviewed

    Minami, M., Matsuda, N. and Masuda, A.

    Proceedings of Japan Academy   Vol. 71B   page: 10-14   1995

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  260. Two Archean Sm-Nd ages of 3.2 and 2.5 Ga for the Marble bar Chert, Warrawoona Group, Pilbara Block, Western Australia Reviewed

    Minami, M., Shimizu, H., Masuda, A. and Adachi, M.

    Geochemical Journal   Vol. 29   page: 347-362   1995

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  261. Two Archean Sm-Nd ages of 3.2 and 2.5 Ga for the Marble Bar Chert, Warrawoona Group, Pilbara Block, Western Australia

    Minami M, Shimizu H, Masuda A, Adachi M

    GEOCHEMICAL JOURNAL   Vol. 29 ( 6 ) page: 347 - 362   1995

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  262. Approximate estimation of the degree of lanthanide tetrad effect from precise but partially void data measured by isotope dilution and an electron configuration model to explain the tetrad phenomenon. Reviewed

    Masuda, A., Matsuda, N., Minami, M. and Yamamoto, H.

    Proceedings of Japan Academy   Vol. 70B   page: 10-14   1994

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  263. La-Ce and Sm-Nd systematics of siliceous sedimentary rocks : A Clue to marine environment in their deposition Reviewed

    Shimizu, H., Amano (Minami), M. and Masuda, A.

    Geology   Vol. 19   page: 369-371   1991

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▼display all

Books 4

  1. 研究するって面白い!科学者になった11人の物語・「地球化学」と歩む

    南 雅代( Role: Contributor)

    岩波書店  2016.10 

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    Total pages:176   Language:Japanese Book type:General book, introductory book for general audience

  2. 考古学を科学する・中国・北朝鮮国境白頭山の10世紀巨大噴火−放射性炭素法による高精度年代測定

    中村俊夫・奥野 充・小田寛貴・南 雅代( Role: Joint author)

    臨川書店  2011 

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    Language:Japanese

  3. 考古学を科学する・鎌倉中世人骨・獣類骨の14C年代測定

    南 雅代, 中村俊夫( Role: Joint author)

    臨川書店  2011 

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    Responsible for pages:233-244   Language:Japanese

  4. 地球化学講座8 地球化学分析法・4. 11加速器質量分析

    中村俊夫・南 雅代( Role: Joint author)

    培風館  2010 

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    Language:Japanese

MISC 163

  1. 第5章第8節「土壌資料のストロンチウム同位体分析」 Invited

    若木重行・南 雅代

    松原市立部遺跡発掘調査報告書     page: 78 - 80   2021.3

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    Authorship:Last author   Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

  2. 第5章第6節「火葬骨・木炭の放射性炭素年代測定」 Invited

    南 雅代

    松原市立部遺跡発掘調査報告書     page: 68 - 72   2021.3

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    Authorship:Lead author   Language:Japanese   Publishing type:Internal/External technical report, pre-print, etc.  

  3. 第5章第7節「人骨のストロンチウム同位体分析」 Invited

    若木重行・南 雅代

    松原市立部遺跡発掘調査報告書     page: 73 - 77   2021.3

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  4. 利根川河床の前橋泥流から見出された木片群の14C年代 Reviewed

    佐藤興平・南 雅代・安倍 久・中村俊夫・武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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    Language:Japanese   Publishing type:Rapid communication, short report, research note, etc. (bulletin of university, research institution)  

  5. 高崎市のボーリングコアから見出された木片の14C年代と高崎ー前橋地域の後期更新世の地層形成史における意義 Reviewed

    佐藤興平・南 雅代・中村俊夫

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  6. 吾妻川上流域の火山泥流堆積物に含まれる木片の14C年代(予察) Reviewed

    佐藤興平・南 雅代・安部 久・中村俊夫・中村庄八・黒岩利明・嶋村 明・武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  7. 前橋の敷島公園に産する巨石「お艶ヶ岩」の起源 Reviewed

    佐藤興平・南 雅代・池田信二・安倍 久・小島純一・武者 巌

    群馬県立自然史博物館研究報告書   Vol. 25   2021.3

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  8. Chemical analysis of cremated human bones excavated from the Tatsube archaeological site, Matsubara City, Osaka Prefecture

    M. Minami, S. Wakaki, A. Sato, N. Kashinoki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_168

  9. Radiocarbon dating of bone remains excavated from archaeological site. Invited

    Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_193

  10. Dietary and inhabited area estimated from Sr isotopic analysis of cremated bones excavated from the Ishibotokedani site in Binmanji Temple, Shiga Prefecture

    Sawada Hitoshi, Wakaki Shigeyuki, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_198

  11. Establishment of a new CO2 extraction method for radiocarbon analysis of dissolved inorganic carbon in water samples and comparison of it with the conventional methods

    Sato Rina, Takahashi Hiroshi, Handa Hiroko, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_157

  12. Paleoenvironmental reconstruction of northwest Iran based on <sup>14</sup>C age and chemical compositions of travertines International coauthorship

    Zhang Yubo, Asahara Yoshihiro, Minami Masayo, Kaneko Masaki, Amin-Rasouli Hadi, Azizi Hossein

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_200

  13. Strontium isotope dating of carbonate concretions International coauthorship

    Asahara Yoshihiro, Yoshida Hidekazu, Yamamoto Koshi, Katsuta Nagayoshi, Minami Masayo, Metcalfe Richard

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_166

  14. Isotopic and geochemical assessment of travertine springs in northwestern Iran International coauthorship

    Kaneko Masaki, Asahara Yoshihiro, Minami Masayo, Kurita Naoyuki, Azizi Hossein, Amin―Rasouli Hadi, Zhang Yubo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 67 ( 0 )   2020.11

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    DOI: 10.14862/geochemproc.67.0_126

  15. 北海道東部(阿寒湖 No.1・網走湖豊住No.1)の 2 つのボーリングコアの花粉分析とAMS 14C年代測定による後期更新世と完新世の植生変遷

    星野フサ・岡 孝雄・春木雅寛・中村俊夫・南 雅代・近藤 務・米道 博・関根達夫・山崎芳樹・若松幹男

    名古屋大学年代測定研究   Vol. 4   page: 10 - 26   2020.6

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  16. 名古屋大学タンデトロンAMS14Cシステムの現状と利用(2019)

    中村俊夫・南 雅代・小田寛貴・池田晃子・山根雅子・西田真砂美・若杉勇輝・佐藤里名・澤田 陸・酢屋徳啓・北川浩之

    名古屋大学年代測定研究   Vol. 4   page: 63 - 71   2020.6

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  17. 水試料の放射性炭素濃度測定のための手法改良

    高橋 浩・半田宙子・佐藤里名・中村俊夫・南 雅代

    名古屋大学年代測定研究   Vol. 4   page: 1 - 8   2020.6

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  18. 滋賀県多賀町敏満寺遺跡石仏谷墓跡出土火葬骨のSr同位体分析

    澤田 陸・若木重行・南 雅代

    名古屋大学年代測定研究   Vol. 4   page: 53 - 58   2020.6

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  19. 鹿児島県湧水町の三日月池の堆積物の層序と年代

    長友拓磨・奥野 充・藤木利之・中村俊夫・南 雅代・成尾英仁・寺田仁志

    名古屋大学年代測定研究   Vol. 4   page: 35 - 38   2020.6

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  20. 令和元年度 名古屋大学総長裁量経費 地域貢献事業「名古屋周辺の地震・活断層を学ぼう」活動報告

    南 雅代・鷺谷 威・小坂由紀子・加藤丈典・若杉勇輝・北川浩之・栗田直幸・山根雅子・西田真砂美・澤田 陸・榎並正樹

    名古屋大学年代測定研究   Vol. 4   page: 76 - 83   2020.6

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  21. 関東山地北西縁の下仁田地域に産する南蛇井層:ジルコンのU−Pb年代による予察 Reviewed

    佐藤興平・竹内 誠・李 雨嘯・南 雅代・柴田 賢

    群馬県立自然史博研究報告   Vol. 24   page: 53 - 70   2020.3

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  22. 巨石のSr同位体と埋没木片の14C年代からみた前橋泥流 Invited

    佐藤興平・南 雅代・柴田 賢・武者 巌

    群馬県立自然史博物館研究報告   Vol. 24   page: 31 - 42   2020.3

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  23. 榛名・小野子・子持火山の基盤を構成する火山岩類の岩石化学的特徴:天然記念物「岩神の飛石」との比較 Reviewed

    佐藤興平・南 雅代

    群馬県立自然史博物館研究報告   Vol. 24   page: 43 - 52   2020.3

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  24. Sr同位体と14C年代から群馬県〜長野県東部地域の火山帯崩壊堆積物の起源と時代を探る

    佐藤興平・南 雅代・柴田 賢・武者 厳・池田信二

    地学雑誌   Vol. 129   page: N70   2020

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  25. Development of Physical and Chemical Analyses to Obtain Accurate Concretion Age of Beachrock Sample

    Kunio Omoto, Tetsuya Waragai, Atsushi Shiomi , Masayo Minami

      Vol. 3   page: 41 - 43   2019.3

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  26. 2018 activity report on an ISEE regional contribution program for the higher grade elementary school students: “Letʼs study geology in Tono region”

    Masayo Minami, Masaki Enami, Seiji Hayashi, Hiroyuki Kitagawa, Takenori Kato, Naoyuki Kurita, Akiko Ikeda, Fumiko Nara, Masako Yamane, Masami Nishida, Toshio Nakamura

      Vol. 3 ( 0 ) page: 87 - 92   2019.3

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  27. Status and Applications of a Tandetron AMS System at Nagoya University in 2018

    Toshio Nakamura, Masayo Minami, Kimiaki Masuda, Hirotaka Oda, Fusa Miyake, Akiko Ikeda, Naoyuki Kurita, Masako Yamane, Masami Nishida, Rina Sato, Tokunori Suya, and Hiroyuki Kitagawa

      Vol. 3 ( 0 ) page: 73 - 81   2019.3

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  28. Gamma ray measurement for Dongrae hot spring water, Busan, South Korea International coauthorship

    Tsuyoshi Tanaka, Seung-Gu Lee, Yoon Yeol Yoon, Michihiro Shibata, Mari Kondo, Masayo Minami

      Vol. 3   page: 44 - 49   2019.3

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  29. Origin of Hijiri-ishi, a large andesitic pyroclastic block within the Karasu River in Takasaki, central Japan Reviewed

    SATO Kohei , MINAMI Masayo , MUSHA Iwao and SHIBATA Ken

    Bull.Gunma Mus.Natu.Hist.   Vol. 23   page: 49 - 56   2019.3

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  30. 火山泥流に含まれる木片の14C不一致年代:前橋泥流と塚原泥流の例. Reviewed

    佐藤興平・南 雅代・中村俊夫・柴田 賢・安部 久・武者 巌・池田信二

    群馬県立自然史博物館研究報告   Vol. 23   page: 57 - 64   2019.3

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  31. 14C ages and chemical compositions of travertines in northwest Iran: An attempt on paleoenvironmental reconstruction in west Asia

    Yubo Zhang, Asahara Yoshihiro, Minani Masayo, Rasouli Hadi, Azizi Hossein

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 66 ( 0 )   2019

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  32. Gamma rays measurement for <sup>14</sup>C rich Dongrae hot spring water, Busan, South Korea

    Tanaka Tsuyoshi, Lee Seung-Gu, Yoon Yoon Yeol, Shibata Michihiro, Kondo Mari, Minami Masayo

    Annual Meeting of the Geological Society of Japan   Vol. 2019 ( 0 )   2019

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    DOI: 10.14863/geosocabst.2019.0_566

  33. シベリア地下氷の様々な炭素成分の14C年代測定-地下氷の正確な形成年代決定のために-

    佐藤 里名, 南 雅代, 檜山 哲哉, 岩花 剛

    日本地球化学会年会要旨集   Vol. 66   2019

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    DOI: 10.14862/geochemproc.66.0_87

  34. History of tsunami and atmospheric nuclear tests recorded in shells of bivalve that has the longest lifespan in Japan

    Kaoru Kubota, Kotaro Shirai, Naoko Sugihara-Murakami, Koji Seike, Kazushige Tanabe, Masayo Minami, Toshio Nakamura

      Vol. 2 ( 0 ) page: 1 - 6   2018.3

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  35. Age comparison between Matuyama-Brunhes geomagnetic polarity reversal and tektite fall International coauthorship

    Yoshihiro Asahara, Seung-Gu Lee, Masayo Minami, Jisu Choi, Keisuke Nagao, Tsuyoshi Tanaka

      Vol. 1 ( 0 ) page: 72 - 77   2018.3

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  36. Quantitative chemical analysis of rocks with X-ray fluorescence analyzer: (1) Major elements

    Miyo Yoshida , Takenori Kato, Masayo Minami, Masaki Enami

      Vol. 1 ( 0 ) page: 66 - 71   2018.3

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  37. Determination of the death year of fox remains found under the floor of the former Jizo-do at Kodenosawa, Toyota

    Masayo Minami, Kazuhiro Suzuki

      Vol. 1 ( 0 ) page: 51 - 54   2018.3

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  38. 2017 activity report on a regional contribution program conducted by Nagoya University: “Investigation of natural and environmental history in the Tokai region” for the higher grade elementary school students

    Masayo Minami, Hiroyuki Kitagawa, Kazuyoshi Yamada, Daisuke Sugawara, Akihisa Kitamura, Masaki Enami, Takenori Kato, Akiko Ikeda, Fumiko Nara, Naoyuki Kurita, Masako Yamane, Masami Nishida, Risako Kida, Toshio Nakamura

      Vol. 2 ( 0 ) page: 92 - 97   2018.3

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  39. Status and Applications of a Tandetron AMS System at Nagoya University in 2017

    Toshio Nakamura, Masayo Minami, Kimiaki Masuda, Hirotaka Oda, Akiko Ikeda, Naoyuki Kurita, Masako Yamane, Masami Nishida, Junpei Fujisawa, Fang Yuting, Makoto Tokumaru, Risako Kida, Tokunori Suya, Hiroyuki Kitagawa

      Vol. 2 ( 0 ) page: 79 - 87   2018.3

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  40. Possibility of radiocarbon dating from carbonate hydroxyapatite in burned animal bones

    Risako Kida, Masayo Minami, Seiji Kadowaki

      Vol. 2 ( 0 ) page: 40 - 45   2018.3

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  41. A pilot study for the mitigation of volcanic hazard caused by collapse of volcano: Maebashi mudflow deposit in time and space estimated from 14C ages of wood blocks and Sr isotope ratios of volcanic blocks

    Kohei Sato, Masayo MIinami, Toshio Nakamura, Iwao Musha, Ken Shibata

      Vol. 2 ( 0 ) page: 35 - 39   2018.3

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  42. Formation process of glendonite concretion in view of carbon and oxygen isotopes

    Yusuke Muramiya, Hidekazu Yoshida, Kaoru Kubota, Masayo Minami

      Vol. 2 ( 0 ) page: 12 - 17   2018.3

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  43. Development of Physical and Chemical Analysis to Obtain Correct Concretion Age for Beachrock Sample

    Kunio Omoto, Tetsuya Waragai, Atsushi Shiomi, Masayo Minami

      Vol. 2 ( 0 ) page: 7 - 11   2018.3

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  44. U-Pb zircon ages of felsic igneous rocks from the Shimonita area in the northwestern Kanto Mountains, central Japan Reviewed

    SATO Kohei, TAKEUCHI Makoto, SUZUKI Kazuhiro, MINAMI Masayo and SHIBATA Ken

    Bull.Gunma Mus.Natu.Hist.   Vol. 22   page: 79 - 94   2018.3

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  45. 木片の14C年代測定による前橋泥流堆積時期の再検討(予察) Reviewed

    佐藤興平・南 雅代・中村俊夫・柴田 賢・児玉美穂・武者 巌

    群馬県立自然史博物館研究報告   Vol. 22 ( 0 ) page: 95 - 101   2018.3

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  46. Reconsideration of deposition age of the Maebashi mudflow by accurate 14C dating of wood fragments treated by ABOx-SC treatment

    Minami Masayo, Sato Kohei, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 65 ( 0 )   2018

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    DOI: 10.14862/geochemproc.65.0_291

  47. Evaluation of the application and efficacy of spatial distribution map of 87Sr/86Sr ratio using stream sediment for provenance analysis

    Jomori Yuka, Minami Masayo, Sakurai Goto Akiko, Ohta Atsuyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 63 ( 0 )   2018

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    DOI: 10.14862/geochemproc.63.0_182

  48. Examination of storage method of water sample for accurate carbon isotopic analysis: How do we decrease the influence on DIC isotope change by biogenic activity?

    Takahashi Hiroshi, Handa Hiroko, Minami Masayo, Kondo Miyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 63 ( 0 )   2018

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    DOI: 10.14862/geochemproc.63.0_73

  49. Establishment of bomb-14C record in North Japan using long-living bivalve shells and its paleoenvironmental application

    Kubota Kaoru, Shirai Kotaro, Sugihara―Murakami Naoko, Seike Koji, Tanabe Kazushige, Minami Masayo, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 65 ( 0 )   2018

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  50. Meteoric 10Be in bed-sediments of Ado and Yasu rivers flowing into Lake Biwa

    Fujisawa Jumpei, Minami Masayo, Saito―Kokubu Yoko

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 65 ( 0 )   2018

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    DOI: 10.14862/geochemproc.65.0_231

  51. A report on the 2016 Iran-Japan Joint International Workshop on Isotope Geology

    Tsuyoshi Tanaka, Yoshihiro Asahara, Masayo Minami

      Vol. 1 ( 0 ) page: 183 - 189   2017.3

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  52. 2016 activity report on a regional contribution program conducted by Nagoya University: “Investigation of past solar activity and the paleoclimate from tree annual rings and varved lake sediments” for elementary and junior high school students

    Masayo Minami, Junko Kitagawa, Hideaki Kojima, Masaki Enami, Takenori Kato, Fusa Miyake, Akiko Ikeda, Kaoru Kubota, Naoyuki Kurita, Miyo Yoshida, Hikari Mukumoto, Junpei Fujisawa, Makoto Tokumaru, Toshio Nakamura, Hiroyuki Kitagawa

      Vol. 1 ( 0 ) page: 170 - 182   2017.3

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  53. Status and Applications of a TandetronAMS System at Nagoya University in 2016

    Toshio Nakamura, Masayo Minami, Kimiaki Masuda, Hirotaka Oda, Akiko Ikeda, Naoyuki Kurita, Kaoru Kubota, Masami Nishida, Hikari Mukumoto, Junpei Fujisawa, Fang Yuting, Tokunori Suya, Hiroyuki Kitagawa

      Vol. 1 ( 0 ) page: 141 - 148   2017.3

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  54. A pilot study on the mitigation of volcanic hazard caused by a collapsed volcano: Source of a large andesite block, a natural monument in Maebashi, central Japan, inferred from 87Sr/86Sr ratio

    Kohei Sato, Masayo Minami, Kazuhiro Suzuki, Ken Shibata

      Vol. 1 ( 0 ) page: 44 - 50   2017.3

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  55. Radiocarbon dating and diet analysis of carbonate hydroxyapatite in cremated human bones

    Hikari Mukumoto, Masayo Minami, Shigeyuki Wakaki, Toshio Nakamura

      Vol. 1 ( 0 ) page: 102 - 107   2017.3

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  56. Radiocarbon Intercomparison on Chemical Experiments, Water series (RICE-W)

    Hiroshi A. Takahashi, Masayo Minami, Takafumi Aramaki

      Vol. 1 ( 0 ) page: 98 - 101   2017.3

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  57. Age comparison between Matuyama-Brunhes geomagnetic polarity reversal and tektite fal International coauthorship

    Yoshihiro Asahara, Seung-Gu Lee, Masayo Minami, Jisu Choi, Keisuke Nagao, Tsuyoshi Tanaka

      Vol. 1 ( 0 ) page: 72 - 77   2017.3

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  58. Quantitative chemical analysis of rocks with X-ray fluorescence analyzer: (1) Major elements

    Miyo Yoshida, Takenori Kato, Masayo Minami, Masaki Enami

      Vol. 1 ( 0 ) page: 66 - 71   2017.3

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  59. Determination of the death year of fox remains found under the floor of the former Jizo-do at Kodenosawa, Toyota

    Masayo Minami, Kazuhiro Suzuki

      Vol. 1 ( 0 ) page: 51 - 54   2017.3

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  60. Sr同位体比からみた「岩神の飛石」の起源(予報). Reviewed

    群馬県立自然史博物館研究報告   Vol. 21   page: 133 - 142   2017.3

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  61. A donation of textbook on geosciences to University of Kurdistan, Iran.

    Tanaka Tsuyoshi, Asahara Yoshihiro, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 64 ( 0 )   2017

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    DOI: 10.14862/geochemproc.64.0_124

  62. The age and composition of lake tufa from the margins of Uyuni salt basin, Bolivia International coauthorship

    Natsuki Hanamoto, Wallis Simon, Sagiya Takesi, Minami Masayo, Shen Chuan-chou, Huang Chun-yuan

    Annual Meeting of the Geological Society of Japan   Vol. 2017 ( 0 )   2017

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    DOI: 10.14863/geosocabst.2017.0_443

  63. Diagenetic alteration of bone apatite revealed by stable and radiogenic Strontium isotope analysis

    Wakaki Shigeyuki, Mukumoto Hikari, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 64 ( 0 )   2017

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    DOI: 10.14862/geochemproc.64.0_14

  64. Change of the crystallinity of bone carbonate hydroxyapatite by heating: Basic research for accurate radiocarbon dating and diet analysis of carbonate hydroxyapatite in cremated bones

    Mukumoto Hikari, Minami Masayo

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 64 ( 0 )   2017

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    DOI: 10.14862/geochemproc.64.0_202

  65. Examination of storage method of water sample for accurate carbon isotopic analysis: How do we decrease the influence on DIC isotope change by biogenic activity?

    Takahashi Hiroshi, Handa Hiroko, Minami Masayo, Kondo Miyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 63 ( 0 )   2016

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    DOI: 10.14862/geochemproc.63.0_73

  66. Possibility of the precipitation reconstruction using DCF change of speleothem

    Minami Masayo, Kato Tomomi, Tokumaru Makoto, Horikawa Keiji, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 63 ( 0 )   2016

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    DOI: 10.14862/geochemproc.63.0_22

  67. Evaluation of the application and efficacy of spatial distribution map of 87Sr/86Sr ratio using stream sediment for provenance analysis

    Jomori Yuka, Minami Masayo, Sakurai Goto Akiko, Ohta Atsuyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 63 ( 0 )   2016

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    DOI: 10.14862/geochemproc.63.0_182

  68. エルサルバドル共和国ヌエバ・エスペランサ遺跡から出土した粗製土器付着白色物質ならびに土壌の化学分析

    南 雅代, 市川 彰, 八木宏明

    名古屋大学加速器質量分析計業績報告書   Vol. XXVI   page: 156-161   2015

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  69. 水試料の14C比較プログラム(RICE-W)−沈殿法の検討−

    南 雅代, 高橋 浩, 荒巻能史, 國分(齋藤)陽子, 伊藤 茂, 中村俊夫

    名古屋大学加速器質量分析計業績報告書,   Vol. XXVI   page: 132-137   2015

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  70. 近年の14C AMS進歩の概要

    南 雅代

    名古屋大学加速器質量分析計業績報告書,   Vol. XXVI   page: 55-60   2015

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  71. 粒径別河川堆積物の元素濃度およびSr同位体比

    城森由佳, 南 雅代, 鈴木和博

    名古屋大学加速器質量分析計業績報告書,   Vol. XXVI   page: 114-119   2015

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  72. 炭化物の14C年代測定のための試料処理−ABOx-SC法における外来炭素の除去過程について−

    冨山慎二, 南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書,   Vol. XXVI   page: 61-66   2015

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  73. 火葬骨の炭酸ヒドロキシアパタイトを用いた14C年代測定の試み

    椋本ひかり, 南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書,   Vol. XXVI   page: 96-101   2015

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  74. 水試料の14C・δ13C分析のための前処理法の比較検討

    南 雅代, 高橋 浩, 荒巻能史, 中村俊夫, 國分(齋藤)陽子, 伊藤 茂, 和田秀樹

    第16回AMSシンポジウム報告集     page: 56-60   2014

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  75. 静岡県竜ヶ岩洞内の滴下水の14Cおよびδ13C

    加藤ともみ, 南 雅代, 堀川恵司, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXV   page: 84-96   2014

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  76. 限外ろ過法を用いた化石骨の14C年代測定−これまでの総括−

    南 雅代, 坂田 健, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXV   page: 164-170   2014

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  77. 福岡市におけるPM2.5中全炭素の14C濃度・δ13Cの季節変動

    早田 葵, 池盛文数, 肥後隼人, 木下 誠, 中島大介, 兼保直樹, 南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXV   page: 75-83   2014

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  78. 水試料の放射性炭素分析のための前処理法の比較検討

    南 雅代, 高橋 浩, 荒巻能史, 太田友子, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXV   page: 171-179   2014

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  79. Comparison of radiocarbon ages of charcoal treated with different methods

    Tomiyama Shinji, Minami Masayo, Nakamura Toshio, Kagi Hiroyuki

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 )   2014

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    DOI: 10.14862/geochemproc.61.0_244

  80. The day when a fox disappeared from Sato-yama in Kodenosawa, Toyota, Aichi prefecture.

    Minami Masayo, Suzuki Kazuhiro, Nakamura Toshio, Ikeda Akiko

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 )   2014

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    DOI: 10.14862/geochemproc.61.0_245

  81. Radiocarbon intercomparison of water samples treated by the different chemical preparation methods.

    Minami Masayo, A. Takahashi H., Aramaki Takafumi, Handa Hiroko, Itaki Sayuri, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 )   2014

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    DOI: 10.14862/geochemproc.61.0_121

  82. Particle-size dependence of 87Sr/86Sr in stream sediments derived from granitic rocks

    Jomori Yuka, Minami Masayo, Suzuki Kazuhiro

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 )   2014

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    DOI: 10.14862/geochemproc.61.0_347

  83. Sr and Nd isotopes on granitoids from eastern Inbi Intrusives, Inner Zone of Southwest Japan

    Sato Kei, Kamei Atsushi, Minami Masayo, Asahara Yoshihiro, Kato Takenori

    Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences   Vol. 2014 ( 0 )   2014

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    DOI: 10.14824/jakoka.2014.0_181

  84. Radiocarbon change for groundwater sample during the sample storage in laboratory

    Takahashi Hiroshi, Minami Masayo, Handa Hiroko, Aramaki Takafumi, Nakamura Toshio

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 )   2014

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    DOI: 10.14862/geochemproc.61.0_120

  85. Perspective of Paleosciences

    Harada Naomi, Ohkouchi Naohiko, Minami Masayo, Seki Osamu, Okazaki Yusuke

    Abstracts of Annual Meeting of the Geochemical Society of Japan   Vol. 61 ( 0 )   2014

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    DOI: 10.14862/geochemproc.61.0_134

  86. アミノ酸ラセミ化法を用いた骨遺物の年代決定 Invited

    南 雅代

    新学術領域研究ニュースレター   Vol. 2   page: 3-4   2013

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  87. 骨試料の年代測定

    南 雅代

    フィッション・トラックニュースレター   Vol. 26   page: 76-79   2013

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  88. 14C年代測定のための骨試料調製法

    南 雅代, 坂田 健, 市川 彰, 伊藤伸幸

    名古屋大学加速器質量分析計業績報告書,   Vol. XXIII   page: 185-189   2012

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  89. 北海道利尻島の泥炭湿地に飛来する鉛の供給源の変遷.

    河野麻希子, 谷水雅治, 浅原良浩, 南 雅代, 細野高啓, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 138-148   2012

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  90. ストロンチウム同位体比を用いた過去の人類の移動の解明 Invited Reviewed

    南 雅代

    化学と教育   Vol. 60   page: 472-473   2012

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  91. アミノ酸組成ならびに14C年代に関する同一古人骨の部位による比較.

    坂田 健, 瀧上 舞, 南 雅代, 中村俊夫, 長岡朋人, 平田和明

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 86-96   2012

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  92. Radiocarbon dating of human skeletons of medieval archaelogical sites in Kamakura, Japan: were they killed by Nitta Yoshisada's attack on Kamakura in AD 1333? Reviewed

    Minami, M, Nakamura, T, Nagaoka, T, Hirata, K

    Radiocarbon   Vol. 54   page: 599-613   2012

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  93. 微少量グラファイト化ラインの検討.

    加藤ともみ, 南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 76-85   2012

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  94. 深部花崗岩中の透水性亀裂と充填鉱物-産状と形成プロセス-.

    吉田英一, 石橋正祐紀, 南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XXIII   page: 54-56   2012

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  95. 14C測定による粗大枯死材の枯死年および分解速度の推定

    菱沼卓也, 南 雅代, 伊藤公一, 大園享司

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 72-81   2011

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  96. エル・サルバドル共和国出土人骨の14C年代とストロンチウム同位体比.

    南 雅代, 坂田 健, 市川 彰, 伊藤伸幸

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 106-115   2011

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  97. Radiocarbon dating of carbonized material adhering to pottery -The difference of Carbon-14 age between inner and outer surface of the pottery in wetland archaeological site. Reviewed

    Miyata, Y, Minami, M, Onbe, S, Sakamoto, M, Nakamura, T, Imamura, M

    Proc. Japan Acad.   Vol. 87B   page: 518-528   2011

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  98. 段階的加熱を用いた14C試料調製.

    南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 225-228   2011

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  99. 里山からキツネが消えた日−豊田市小手沢町の地蔵堂から見つかったキツネの遺骸−.

    鈴木和博, 中村俊夫, 南 雅代, 池田晃子

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 121-134   2011

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  100. 里山からキツネが消えた日 −一匹のキツネのC・N・Sr同位体比測定−.

    鈴木和博, 中村俊夫, 南 雅代, 池田晃子

    海洋化学研究   Vol. 24   page: 64-72   2011

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  101. 見かけ上の炭素年代差を用いた環境解析 −淡水湖産貝,骨試料を例として−.

    宮田佳樹, 南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 49-54   2011

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  102. 炭素・酸素同位体分析による実構造物中のコンクリートの中性化進行評価.

    浅原良浩, 南 雅代, 丸山一平, 吉田英一, 田中 剛名古屋大学加速器質量分析計業績報告書

    名古屋大学加速器質量分析計業績報告書   Vol. XXII   page: 140-151   2011

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  103. A first step toward small-mass AMS radiocarbon analysis at Nagoya University.

    Minami, M, Miyata, Y, Nakamura, T, Hua, Q

        page: 57-60   2010

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  104. エル・サルバドル共和国出土人骨のストロンチウム同位体比

    南 雅代, 市川 彰, 坂田 健, 森田 航, 伊藤伸幸

    古代メソアメリカの考古資料を用いた学術的発展研究(平成21年度総長裁量経費報告書)     page: 23-30   2010

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  105. Radiocarbon dating of charred human-bone remains preserved in urns excavated from medieval Buddhist cemetery in Japan. Reviewed

    Nakamura, T, Sagawa, S, Yamada, T, Kanehara, M, Tsuchimoto, N, Minami, M, Omori, T, Okuno and M, Ohta, T

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B268   page: 985-989   2010

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  106. CHIME geochronology of granitic gneiss from Baekdong in the Hongseong area of the Gyeonggi Massif, South Korea. Reviewed

    Suzuki, K, Chwae, U, Dunkley, D.J, Kim, S-W, Kajizuka, I, Minami, M

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 57   page: 19-41   2010

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  107. 同位体分析による実構造物中のコンクリートの中性化進行評価の試み. Reviewed

    丸山一平, 淺原良浩, 南 雅代, 吉田英一

    セメントコンクリート論文集   Vol. 64   page: 139-146   2010

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  108. 限外濾過調製法を用いた骨ゼラチンの14C年代測定.

    山崎香奈, 南 雅代, 大森貴之, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 100-112   2010

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  109. 貝の炭素年代測定値が示す意味.

    宮田佳樹, 南 雅代, 松崎浩之, 西本豊弘, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 32-39   2010

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  110. 放射性炭素を用いたコンクリートの中性化時期の推定.

    浅原良浩, 南 雅代, 丸山一平, 吉田英一, 田中 剛名古屋大学加速器質量分析計業績報告書

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 53-60   2010

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  111. 少量炭素試料のAMS 14C分析に向けて.

    南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XXI   page: 166-170   2010

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  112. Comparison of δ13C and 14C activities of CO2 samples combusted in closed-tube and elemental-analyzer systems. Reviewed

    Minami, M, Goto, S. A, Omori, T, Ohta, T, Nakamura, T

    Nucl. Instr. and Meth. in Phys. Res.     page: doi: 10.1016/j.nimb.2009.10.06   2009

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  113. 封管法で微量のシュウ酸をガス化した場合のガス組成

    後藤(桜井)晶子, 南 雅代, 三村耕一

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 152-155   2009

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  114. 石灰岩質砂岩の炭素14を指標とする風化評価-コンクリートのナチュラルアナログ研究として-

    南 雅代, 池田晃子, 吉田英一

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 71-80   2009

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  115. 琵琶湖の淡水リザーバー効果に関する研究

    宮田佳樹, 南 雅代, 遠部 慎, 坂本 稔, 今村峯雄

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 112-116   2009

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  116. Strontium isotope analysis using Resonance Ionization Mass Spectrometry for determination of bone origin. Reviewed

    Sasada, S, Watanabe, K, Higuchi, Y, Tomita, H, Goto, A, Minami, M, Suzuki, K, Kato, T, Hasegawa, T, Kawarabayashi, J, Iguchi, T

    Journal of Nuclear Science and Technology   Vol. 5   page: 97-100   2008

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  117. コンクリート風化の超長時間評価を目的とする石灰岩質砂岩地層の14C存在度変化

    田中 剛, 南 雅代, 吉田英一, 吉田鎮男

    名古屋大学加速器質量分析計業績報告書   Vol. XIX   page: 117-126   2008

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  118. 古人骨の同一個体内における部位の違いによるδ13C・δ15N値、14C年代の相違の有無

    瀧上 舞, 南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIX   page: 117-126   2008

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  119. 試料燃焼-二酸化炭素精製における炭素同位体比分別 -封管法と元素分析計による試料調製の違い-

    南 雅代, 太田友子, 大森貴之, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XX   page: 160-168   2008

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  120. Diverse microstructures from Archaean chert from the Mount Goldsworthy - Mount Grant area, Pilbara Craton, Western Australia: microfossils, dubiofossils, or pseudofossils? Reviewed

    Sugitani, K, Grey, K, Allwood, A.C, Nagaoka, T, Minami, M, Marshall, C.P, Van Kranendonk, M.J, Walter, M.R

    Precambrian Research   Vol. 158   page: 228-262   2007

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  121. Geochemical mapping in Aichi Prefecture, Japan: Its significance as a useful dataset for geological mapping. Reviewed

    Yamamoto, K, Tanaka, T, Minami, M, Mimura, K, Asahara, Y, Yoshida, H, Yogo, S, Takeuchi, M, Inayoshi, M

    Applied Geochemistry   Vol. 22   page: 306-319   2007

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  122. Estimation of paleotemperature from racemization of aspartic acid in combination with radiocarbon age. Reviewed

    Minami, M, Takeyama, M, Mimura, K, Nakamura, T

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B259   page: 547-551   2007

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  123. 鎌倉由比ヶ浜埋葬人骨および獣骨の地球化学的研究

    南 雅代, 中村俊夫, 平田和明, 長岡朋人, 鵜澤和宏

    名古屋大学加速器質量分析計業績報告書   Vol. XVIII   page: 134-143   2007

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  124. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group chondrites. Reviewed

    Minami, M, Terui, A, Takaoka, N, Nakamura, T

    Meteoritics & Planetary Science   Vol. 41 ( 4 ) page: 529-540   2006

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  125. INAA trace element analysis of stream sediments collected from the northeastern areas of Aichi Prefecture, central Japan. Reviewed

    Minami, M, Shibata, S, Tanaka, T

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 53   page: 15-32   2006

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  126. Geochemistry of heavily altered Archean volcanic and volcaniclastic rocks of the Warrawoona Group, at Mt. Goldworthy in the Pilbara Craton, Western Australia: Implications for alteration and origin. Reviewed

    Sugitani, K, Yamashita, F, Nagaoka T, Minami, M, Yamamoto, K

    Geochemical Journal   Vol. 40   page: 523-535   2006

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  127. Geochemistry and sedimentary petrology of Archean clastic sedimentary rocks at Mt. Goldworthy, Pilbara Craton, Western Australia: Evidence for the early evolution of continental crust and hydrothermal alteration. Reviewed

    Sugitani, K, Yamashita, F, Nagaoka T, Yamamoto, K, Minami, M, Mimura, K, Suzuki K

    Precambrian Research   Vol. 147   page: 124-147   2006

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  128. Application of Sr isotopes to geochemical mapping and provenance analysis: the case of Aichi Prefecture, central Japan. Reviewed

    Asahara, Y, Ishiguro, H, Tanaka, T, Yamamoto, K, Mimura, K, Minami, M, Yoshida, H

    Applied Geochemistry   Vol. 21   page: 419-436   2006

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  129. Carbon and nitrogen isotopic fractionation in bone collagen during chemical treatment. Reviewed

    Minami M, Nakamura, T

    Chemical Geology   Vol. 222   page: 65-74   2005

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  130. Database for geochemical mapping of the northeastern areas of Aichi Prefecture, central Japan -XRF major element data of stream sediments collected in 1994 to 2004-. Reviewed

    Minami, M, Tanaka, T, Yamamoto, K, Mimura, K, Asahara, Y, Takeuchi, M, Yoshida, H, Yogo, S

    J. Earth Planet. Sci. Nagoya Univ.   Vol. 52   page: 25- 67   2005

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  131. 琵琶湖の湖底堆積物ならびに流入河川堆積物の炭素同位体比から探る堆積環境

    南 雅代, 種 紀彦, 小田寛貴, 横田喜一郎

    名古屋大学加速器質量分析計業績報告書   Vol. XVI   page: 73-83   2005

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  132. Chemical techniques to extract organic fractions from fossil bones for accurate <sup>14</sup>C dating, Reviewed

    Minami, M, Muto, H, Nakamura, T

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B223-224   page: 302-307   2004

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  133. High precision <sup>14</sup>C measurement with the HVEE Tandetron AMS system at Nagoya Universtiy. Reviewed

    Nakamura, T, Niu, E, Oda, H, Ikeda, A, Minami, M

    Nucl. Instr. and Meth. in Phys. Res.   Vol. B223-224   page: 124-129   2004

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  134. 東シベリアマンモス臼歯化石のアミノ酸のラセミ化と<sup>14</sup>C年代

    南 雅代, 竹山雅美, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XV   page: 52-65   2004

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  135. 都市公共用水域に対するノンポイント汚染源としての道路脇粉塵(<63μm画分)の化学的特徴-名古屋市の事例- Reviewed

    杉谷健一郎, 野村晶子, 南 雅代, 加藤博和

    水環境学会誌   Vol. 27   page: 547-552   2004

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  136. 琵琶湖湖底堆積物の化学的特徴

    南 雅代, 平野靖幸, 小田寛貴, 横田喜一郎

    名古屋大学加速器質量分析計業績報告書   Vol. XV   page: 181-198   2004

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  137. 化石骨から抽出したアミノ酸の<sup>14</sup>C年代とラセミ化反応

    南 雅代, 村中泰志, 中村俊夫

    名古屋大学加速器質量分析業績報告書   Vol. XIV   page: 201-207   2003

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  138. 最近落下した隕石ならびに南極やまと隕石の<sup>14</sup>C濃度測定

    南 雅代, 照井敦, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIV   page: 72-82   2003

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  139. 有機金属の環境指標としての有用性の検討

    安藤邦彦, 南 雅代, 小田寛貴, 横田喜一郎, 山本鋼志

    名古屋大学加速器質量分析計業績報告書   Vol. XIV   page: 155-169   2003

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  140. Diurnal variation of CO2 concentration, Δ<sup>14</sup>C and δ<sup>13</sup>C in an urban forest --Estimate of the anthropogenic and biogenic CO<sub>2</sub> contributions--. Reviewed

    Takahashi, H, Konohira, E, Hiyama, T, Minami, M, Nakamura, T, Yoshida, N

    Tellus   Vol. 54B   page: 97-109   2002

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  141. 化石骨の脱灰処理条件の検討

    南 雅代, 中村俊夫

    名古屋大学加速器質量分析業績報告書   Vol. XIII   page: 177-185   2002

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  142. 琵琶湖南湖の湖底堆積物のSr同位体比

    南 雅代, 小田寛貴, 小島貞男, 横田喜一郎, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XIII   page: 71-81   2002

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  143. An extraction system to measure carbon-14 terrestial ages of meteorites with a Tandetron AMS at Nagoya University Reviewed

    Minami, M, Nakamura, T

    Radiocarbon   Vol. 43 ( 2A ) page: 263-270   2001

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  144. 南極隕石の落下<sup>14</sup>C年代測定

    南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XII   page: 134-145   2001

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  145. British Columbiaから採取された獣骨および人骨のAMS14C年代

    南 雅代, Chisholm, B, 武藤宏男, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XII   page: 169-179   2001

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  146. AMS radiocarbon age for fossil bones by XAD-2 chromatography method Reviewed

    Minami, M, Nakamura, T

    Nucl.Instr.andMeth.in Phys.Res.   Vol. B172   page: 462-468   2000

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  147. 化学処理によるコラーゲンの炭素・窒素同位体比の変化-主にXAD-2樹脂処理について-

    南 雅代

    名古屋大学加速器質量分析計業績報告書   Vol. XI   page: 231-238   2000

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  148. XAD-2樹脂処理法による化石骨のAMS<sup>14</sup>C年代 Reviewed

    南 雅代, 中村俊夫

    第四紀研究   Vol. 39   page: 547-557   2000

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  149. The HVEE Tandetron AMS system at Nagoya University Reviewed

    Nakamura, T, Niu, E, Oda, H, Ikeda, A, Minami, M, Takahashi, H, Adachi, M, Pals, L

    Nucl.Instr.and Meth.in Phys.Res.   Vol. B172   page: 52-57   2000

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  150. 南極隕石の落下<sup>14</sup>C年代測定の試み

    南 雅代, 中村俊夫

    名古屋大学加速器質量分析計業績報告書   Vol. XI   page: 100-112   2000

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  151. Carbon and nitrogen isotope fractionations of collagen by treatment with XAD-2 adsorption resin

      Vol. X   page: 235-242   1999

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  152. AMS <sup>14</sup>C age of a Molar fossil of Naumann's elephant -with XAD-2 resin-

      Vol. X   page: 139-148   1999

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  153. A whole skerton of a Japanese Wolf collected from a cave at Mt. Kyonojo in Izumi-mura, Yatsushiro-gun, Kumamoto Prefecture

      Vol. 11   page: 35-69   1999

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  154. AMS <sup>14</sup>C age of Japanese wolf collected from the cave at Mt. Kyonojo in Izumi-mura, Yashiro-gun, Kumamoto prefecture

      Vol. X   page: 189-198   1999

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  155. Approximate estimation method of the degree of lanthanide letrad effect and application to the tetrad effects in lanthanide ionic radii Reviewed

    Minami, M, Masuda, A

    Journal of Magnetism and Magnetic Materials   Vol. 180   page: 1021-1022   1998

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  156. Extraction and radiocarbon dates of amino acids in fossil bones

      Vol. IX   page: 46-54   1998

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  157. Isotope fractionation by XAD-2 treatment

      Vol. IX   page: 308-311   1998

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  158. Comparison of AMS radiocarbon ages between amino acids and collagens in fossil bones Reviewed

    Minami, M, Nakamura, T

    Chinese Science Bulletin   Vol. 43   page: 89   1998

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  159. Analytical note of stable nitrogen isotopic measurements with MAT-252 mass spectrometer at Dating and Materials Research Center, Nagoya University

      Vol. IX   page: 316-323   1998

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  160. *Approximate estimation of the degree of lanthanide tetrad effect from the data potentially involving all lanthanides Reviewed

    Minami, M, Masuda, A

    Geochemical Journal   Vol. 31   page: 125-133   1997

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  161. An attempt on accurate radiocarbon and carbon isotope measurements of fossil bone

      Vol. VIII   page: 247-253   1997

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  162. Experimental studies on behaviors of lanthanides in interaction between water and basaltic rock grains : Bearings of tetrad effect on conditions Reviewed

    Minami, M, Matsuda, N, Masuda, A

    Proceedings of Japan Academy   Vol. 71B   page: 10-14   1995

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  163. Two Archean Sm-Nd ages of 3.2 and 2.5 Ga for the Marble bar Chert, Warrawoona Group, Pilbara Block, Western Australia Reviewed

    Minami, M, Shimizu, H, Masuda, A, Adachi, M

    Geochemical Journal   Vol. 29   page: 347-362   1995

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▼display all

Presentations 92

  1. 名古屋大学タンデトロンAMS14Cシステムの現状と利用(2020)

    中村俊夫・南 雅代・山根雅子・小田寛貴・池田晃子・小坂由紀子・西田真砂美・若杉勇輝・佐藤里名・澤田 陸・酢屋徳啓・北川浩之

    第32回(2020年度)名古屋大学宇宙地球環境研究所 年代測定研究シンポジウム  2021.3.5  名古屋大学宇宙地球環境研究所年代測定研究部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  2. 埋没樹木を用いた14Cウイグルマッチングの検討:霧島新燃岳の享保噴火を例として

    原 慎治・奥野 充・藤木利之・木村勝彦・中村俊夫・南 雅代・小林哲夫

    第32回(2020年度)名古屋大学宇宙地球環境研究所 年代測定研究シンポジウム  2021.3.5  名古屋大学宇宙地球環境研究所年代測定研究部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  3. Radiocarbon ages and geochemical record for a travertine hill in NW Iran International coauthorship

    YuBo Zhang・Yoshihiro Asahara・Masaki Kaneko・Masayo Minami・Hadi Amin-Rasouli・Hossein Azizi

    2021.3.5 

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    Event date: 2021.3

    Language:English   Presentation type:Symposium, workshop panel (nominated)  

    Country:Japan  

  4. イラン北西部のトラバーチン湧水中のヒ素の起源解析 International coauthorship

    金子将己・淺原良浩・南 雅代・栗田直幸・Hossein Azizi・Hadi Amin-Rasouli・張 玉博

    第32回(2020年度)名古屋大学宇宙地球環境研究所 年代測定研究シンポジウム  2021.3.5  名古屋大学宇宙地球環境研究所年代測定研究部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  5. 大気中の14CO2の分布と変動

    森本真司・関根 光・山田千夏・青木周司・南 雅代・中村俊夫

    第32回(2020年度)名古屋大学宇宙地球環境研究所 年代測定研究シンポジウム  2021.3.5  名古屋大学宇宙地球環境研究所年代測定研究部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  6. AMS14C年代測定に基づく北海道石狩低地帯の花粉分析データからの古植生と推移相

    星野フサ・春木雅寛・南 雅代・中村俊夫

    第32回(2020年度)名古屋大学宇宙地球環境研究所 年代測定研究シンポジウム  2021.3.5  名古屋大学宇宙地球環境研究所年代測定研究部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  7. 北海道中央部における8世紀以降の植生・気候変遷の解明の試みについて

    岡 孝雄・ 星野フサ・南 雅代・中村俊夫・若松幹男・近藤 務・米道 博・関根達夫

    第32回(2020年度)名古屋大学宇宙地球環境研究所 年代測定研究シンポジウム  2021.3.5  名古屋大学宇宙地球環境研究所年代測定研究部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  8. 米国グリーンリバー湖成層に見られる有機物起源チャートの成因

    隈 隆成・長谷川 精・吉田英一・南 雅代

    第32回(2020年度)名古屋大学宇宙地球環境研究所 年代測定研究シンポジウム  2021.3.5  名古屋大学宇宙地球環境研究所年代測定研究部

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    Event date: 2021.3

    Language:Japanese   Presentation type:Symposium, workshop panel (nominated)  

    Venue:オンライン   Country:Japan  

  9. Establishment of a new CO2 extraction method for radiocarbon analysis of dissolved inorganic carbon in water samples and comparison of it with the conventional methods

    Sato Rina, Takahashi Hiroshi, Handa Hiroko, Minami Masayo

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    Event date: 2020.11

    Language:Japanese  

    Country:Japan  

  10. Dietary and inhabited area estimated from Sr isotopic analysis of cremated bones excavated from the Ishibotokedani site in Binmanji Temple, Shiga Prefecture

    Sawada Hitoshi, Wakaki Shigeyuki, Minami Masayo

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  11. Isotopic and geochemical assessment of travertine springs in northwestern Iran International coauthorship

    Kaneko Masaki, Asahara Yoshihiro, Minami Masayo, Kurita Naoyuki, Azizi Hossein, Amin―Rasouli Hadi, Zhang Yubo

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  12. Paleoenvironmental reconstruction of northwest Iran based on 14C age and chemical compositions of travertines International coauthorship

    Zhang Yubo, Asahara Yoshihiro, Minami Masayo, Kaneko Masaki, Amin-Rasouli Hadi, Azizi Hossein

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    Event date: 2020.11

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  13. Strontium isotope dating of carbonate concretions International coauthorship

    Asahara Yoshihiro, Yoshida Hidekazu, Yamamoto Koshi, Katsuta Nagayoshi, Minami Masayo, Metcalfe Richard

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    Event date: 2020.11

    Language:Japanese  

    Country:Japan  

  14. 考古遺跡から出土した骨遺物の放射性炭素年代測定 Invited

    南 雅代

    2020年度日本地球化学会第67回年会  一般社団法人 日本地球化学会

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    Event date: 2020.11

    Language:Japanese   Presentation type:Oral presentation (keynote)  

    Venue:オンライン   Country:Japan  

  15. Chemical analysis of cremated human bones excavated from the Tatsube archaeological site, Matsubara City, Osaka Prefecture

    M. Minami, S. Wakaki, A. Sato, N. Kashinoki

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    Event date: 2020.11

    Language:Japanese  

    Country:Japan  

  16. Quality control for radiocarbon dating of charcoal: Assessment of decontamination by chemical pre-treatment Invited

    Masayo Minami

    JpGU – AGU Joint Meeting 2020:Virtual  

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    Event date: 2020.7

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  17. イラン・アルセンジャンA5-3洞窟遺跡から採取された炭化物の年代測定

    冨山慎二,南 雅代,常木 晃,中村俊夫

    第15回AMSシンポジウム 

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    Event date: 2013.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  18. Pb同位体比の全国地球化学図作成に向けての課題

    城森由佳,南 雅代,谷水雅治,淺原良浩

    平成24年度共同利用・共同研究成果発表会 

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    Event date: 2013.2

    Language:Japanese   Presentation type:Poster presentation  

    Venue:高知大学海洋コア総合研究センター   Country:Japan  

  19. 骨試料の年代測定

    南 雅代

    第37回フィッション・トラック研究会 

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    Event date: 2013.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:筑波大学   Country:Japan  

  20. 実構造物中のコンクリートの中性化進行評価−14C, δ13C・δ18O, EPMA分析から何が言えるか−

    南 雅代

    第25回名古屋大学年代測定総合研究センターシンポジウム 

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    Event date: 2013.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学   Country:Japan  

  21. 考古学・文化財科学分野に新たな知見を与える同位体

    南 雅代

    日本質量分析学会2012年度同位体比部会 

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    Event date: 2012.11

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:仙台秋保温泉   Country:Japan  

  22. 北海道の河川堆積物を用いた87Sr/86Sr同位体比分布

    城森由佳,南 雅代,太田充恒,今井 登

    日本地球化学会第59回年会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学   Country:Japan  

  23. 微少量炭素試料の14C測定法の検討

    加藤ともみ,南 雅代,中村俊夫

    日本地球化学会第59回年会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  24. 河川堆積物を用いた全国地質Sr同位体比マップ−産地推定のための基礎データ−

    南 雅代,城森由佳,長谷和麿,太田充恒,今井 登

    日本地球化学会第59回年会 

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    Event date: 2012.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  25. Old apparent 14C ages of a peat core from Rishiri Island, northern Japan. International conference

    Kono, M., Minami, M., Tanimizu, M., Asahara, Y., Hosono, T., Nakamura, T.

    The 21h International Radiocarbon Conference 

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    Event date: 2012.7

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  26. Is ultrafiltration effective for accurate 14C-dating of fossil bone excavated in Japan? International conference

    The 21h International Radiocarbon Conference 

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    Event date: 2012.7

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  27. Contribution of river and subsurface water of limestone districts to carbon source at Lake Biwa, Japan International conference

    Miyata, Y., Aramaki, T., Minami, M., Ohta, T. and Nakamura, T.

    The 21h International Radiocarbon Conference 

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    Event date: 2012.7

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  28. Radiocarbon as a tool of the study for carbonation process in concrete International conference

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    Event date: 2009.10

    Language:English   Presentation type:Oral presentation (general)  

  29. 放射性炭素14Cを指標とするコンクリートの定量的劣化度評価の試み

    浅原良浩・南 雅代・丸山一平・吉田英一・田中 剛

    日本地球化学会第56回年会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  30. 石灰質砂岩の放射性炭素を指標とする風化評価の試み-コンクリートの組織劣化に関するナチュラルアナログ研究として-

    南 雅代・吉田英一・田中 剛

    日本地球化学会第56回年会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  31. 九州および四国地域のストロンチウム同位体比地球化学図

    城森由佳・南 雅代・後藤(桜井)晶子・今井 登

    日本地球化学会第56回年会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  32. A weathering assessment of calcareous sandstones using radiocarbon International conference

    20th International Radiocarbon Conference 

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    Event date: 2009.6

    Language:English   Presentation type:Poster presentation  

  33. 九州地域のストロンチウム同位体比分布

    後藤(桜井)晶子・南 雅代

    日本地球惑星科学連合2009年大会 

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    Event date: 2009.5

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  34. 同一地点で採集された河川堆積物の採集年・季節の違いによる化学組成の変動

    南 雅代・田中 剛・山本鋼志・三村耕一・浅原良浩・竹内 誠・吉田英一

    日本地球惑星科学連合2009年大会 

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    Event date: 2009.5

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  35. 琵琶湖の淡水リザーバー効果に関する研究

    宮田佳樹・南 雅代・遠部 慎・坂本 稔・今村峯雄

    第21回名古屋大学年代測定総合研究センターシンポジウム 

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    Event date: 2009.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  36. 封管法とEA法によってCO2化した微量標準試料のδ13C、14C値

    南 雅代・後藤(桜井)晶子・大森貴之・中村俊夫

    第11回AMSシンポジウム 

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    Event date: 2009.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  37. 名古屋クロマツの年輪セルロースから探る環境変動

    林 和樹・南 雅代・中塚 武・中村俊夫

    第11回AMSシンポジウム 

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    Event date: 2009.1

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  38. 三陸石灰質砂岩の炭素14を指標とする風化評価 -コンクリート風化のナチュラルアナログ研究として-

    南 雅代・池田晃子・吉田英一・田中 剛

    第21回名古屋大学年代測定総合研究センターシンポジウム 

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    Event date: 2009.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  39. 試料燃焼-二酸化炭素精製における炭素同位体比分別 -封管法と元素分析計による試料調製の違い-

    南 雅代・後藤(桜井)晶子・大森貴之・中村俊夫

    日本質量分析学会同位体比部会2008 

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    Event date: 2008.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  40. 樹木セルロースの調製法の違いによる炭素同位体比の測定値への影響

    日本質量分析学会同位体比部会2008 

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    Event date: 2008.11

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  41. 九州における河川堆積物のSr同位体比と周辺地域の地質環境

    後藤(桜井)晶子・南 雅代

    日本質量分析学会同位体比部会2008 

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    Event date: 2008.11

    Language:Japanese   Presentation type:Poster presentation  

  42. 名古屋クロマツ年輪セルロースの炭素同位体比変動を規定する環境要因

    林 和樹・南 雅代

    日本地球化学会第55回年会 

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    Event date: 2008.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  43. Comparison of δ13C and 14C activities between closed tube- and elemental analyzer-combusted CO2 samples International conference

    11th International Conference on Accelerator Mass Spectrometry 

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    Event date: 2008.9

    Language:English   Presentation type:Poster presentation  

  44. 九州北部、中部地域の河川堆積物で見られる87Sr/86Srの分布

    後藤(桜井)晶子・南 雅代・浅原良浩

    日本地球化学会第55回年会 

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    Event date: 2008.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  45. 土器付着炭化物と現生生態試料の炭素年代測定結果から推定される琵琶湖における淡水リザーバー

    宮田佳樹・遠部 慎・南 雅代・坂本 稔・今村峯雄

    第四紀学会2008年大会 

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    Event date: 2008.8

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  46. 骨部位の違いによる炭素・窒素同位体比の相違~現生人骨での検討~

    瀧上 舞・米田 穣・南 雅代・中村俊夫・百々幸雄

    日本文化財科学会第25回大会 

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    Event date: 2008.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  47. 骨ストロンチウム同位体比に与える続成作用の影響

    南 雅代・後藤晶子・長谷川拓也

    日本文化財科学会第25回大会 

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    Event date: 2008.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  48. 鎌倉由比ヶ浜南遺跡から出土した獣骨の14C年代-人骨の14C年代との比較-

    南 雅代・中村俊夫

    第10回AMSシンポジウム 

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    Event date: 2008.3

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  49. 骨中のストロンチウム同位体解析による古代人の移住史解明

    南 雅代

    学術創成研究「弥生農耕の起源と東アジア-炭素年代測定による高精度編年体系の構築-」名古屋研究会 

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    Event date: 2008.2

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  50. コンクリート風化の超長時間評価を目的とする石灰岩質砂岩地層の14C存在度変化

    田中 剛・南 雅代・吉田英一・吉田鎮男

    第20回名古屋大学年代測定総合研究センターシンポジウム 

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    Event date: 2008.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  51. 試料燃焼-二酸化炭素精製における炭素同位体比分別 -封管法と元素分析計による試料調製の違い-

    南 雅代・太田友子・大森貴之・中村俊夫

    第20回名古屋大学年代測定総合研究センターシンポジウム 

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    Event date: 2008.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  52. 骨中のストロンチウム同位体解析による古代人の移住史解明 -骨中の87Sr/86Sr同位体比は生育地の87Sr/86Sr同位体比を反映しているか-

    南 雅代・鈴木和博・後藤晶子・加藤丈典・渡辺賢一・長谷川拓也

    日本地球化学会第54回年会 

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    Event date: 2007.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  53. 古人骨の同一個体内における骨部位の違いによる炭素・窒素安定同位体比の相違

    瀧上 舞・南 雅代・中村俊夫

    日本文化財科学会第24回大会 

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    Event date: 2007.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  54. 鎌倉由比ヶ浜地域から出土した人骨・歯のストロンチウム同位体比

    南 雅代・中村俊夫・平田和明・長岡朋人

    日本文化財科学会第24回大会 

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    Event date: 2007.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  55. 琵琶湖湖底堆積物の堆積年代 -14C,210Pb,137Cs年代-

    南 雅代

    ワークショップ「コア解析による古環境復元のための高精度時間軸の確立と問題点~グローバルな古環境復元に向けて~」 

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    Event date: 2007.3

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  56. 鎌倉由比ガ浜埋葬人骨および獣骨の地球化学的研究

    南 雅代・中村俊夫・平田和明・長岡朋人・鵜澤和宏

    第19回名古屋大学年代測定総合研究センターシンポジウム 

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    Event date: 2007.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  57. An improved extraction system to measure carbon-14 terrestrial ages of meteorites and pairing of the Antarctic Yamato-75097 group.

    International Symposium on Radiometric Dating Studies- Frontier of Technical developments and Applications of CHIME and AMS 14C Dating Methods-, Nagoya University 

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    Event date: 2007.1

    Language:English   Presentation type:Oral presentation (general)  

    Country:Japan  

  58. Estimation of paleotemperature from racemization of aspartic acid in combination with radiocarbon age.

    International Symposium on Radiometric Dating Studies- Frontier of Technical developments and Applications of CHIME and AMS 14C Dating Methods-, Nagoya University 

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    Event date: 2007.1

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  59. 核実験起源14Cの経年変動の科学捜査への応用

    中村俊夫・南 雅代・小田寛貴・渡邊隆広・太田友子

    日本地球化学会第53回年会 

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    Event date: 2006.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  60. 鎌倉古人骨のストロンチウム同位体比

    南 雅代・中村俊夫

    日本地球化学会第53回年会 

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    Event date: 2006.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  61. 河床堆積物の化学組成の年・季節変動-矢田川の例-

    南 雅代・伊藤知子・田中 剛

    日本地球化学会第53回年会 

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    Event date: 2006.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  62. 愛知県犬山市東部の中・古生層分布地域の地球化学図とヒ素と金の挙動

    伊藤知子・田中 剛・南 雅代

    日本地球化学会第53回年会 

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    Event date: 2006.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  63. 鎌倉由比ヶ浜地域の遺跡から出土した人骨・獣骨の14C年代

    南 雅代・中村俊夫・平田和明・長岡朋人・星野敬吾・鵜澤和宏

    日本文化財科学会第23回大会 

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    Event date: 2006.6

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  64. 鎌倉由比ガ浜遺跡から出土した化石骨に関する地球化学的研究

    南 雅代・中村俊夫・平田和明・長岡朋人・星野敬吾

    第8回AMSシンポジウム 

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    Event date: 2006.1

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  65. 化学処理による骨コラーゲンの炭素・窒素同位体分別

    南 雅代・中村俊夫

    第8回AMSシンポジウム 

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    Event date: 2006.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  66. Estimation of paleotemperature from racemization of aspartic acid in combination with radiocarbon age. International conference

    10th International Conference on Accelerator Mass Spectrometry 

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    Event date: 2005.9

    Language:English   Presentation type:Poster presentation  

  67. 琵琶湖の湖底堆積物ならびに流入河川堆積物の炭素同位体比から探る堆積環境

    南 雅代・種 紀彦・小田寛貴・横田喜一郎・中村俊夫

    日本地球化学会第52回年会 

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    Event date: 2005.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  68. 84Sr高濃縮スパイクを用いたSrの定量/同位体比同時分析

    南  雅代・林 隆正・田中 剛

    日本地球化学会第52回年会 

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    Event date: 2005.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  69. 琵琶湖の湖底堆積物ならびに流入河川堆積物の炭素同位体比から探る堆積環境

    南 雅代・種 紀彦・小田寛貴・横田喜一郎

    第17回名古屋大学年代測定総合研究センターシンポジウム 

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    Event date: 2005.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  70. 東シベリアマンモス象臼歯化石のアミノ酸の14C年代とラセミ化反応

    南 雅代・竹山雅美・中村俊夫

    日本地球化学会第51回年会 

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    Event date: 2004.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  71. 化学処理による骨コラーゲンの炭素・窒素同位体分別

    南 雅代

    第52回質量分析総合討論会 

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    Event date: 2004.6

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  72. マンモス臼歯化石の14C年代

    南 雅代・竹山雅美

    第16回名古屋大学タンデトロン加速器質量分析計シンポジウム 

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    Event date: 2004.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  73. 愛知県の地球化学図-微量元素-.

    山本鋼志・田中 剛・南 雅代・三村耕一・淺原良浩・吉田英一・與語節生・稲吉正実

    日本地球化学会第50回年会 

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    Event date: 2003.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  74. ナウマン象臼歯化石から抽出したアミノ酸の14C年代とラセミ化反応

    南 雅代・村中泰志・中村俊夫

    日本地球化学会第50回年会 

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    Event date: 2003.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  75. 地圏環境評価指標としてのSr同位体

    淺原良浩・石黒寛子・田中 剛・山本鋼志・南 雅代・三村耕一・吉田英一・與語節生

    日本地球化学会第50回年会 

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    Event date: 2003.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  76. 愛知県の地球化学図-主成分元素-

    田中 剛・山本鋼志・南 雅代・三村耕一・淺原良浩・吉田英一・與語節生・稲吉正実

    日本地球化学会第50回年会 

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    Event date: 2003.9

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  77. 87Sr/86Sr ratios in lake sediments in Lake Biwa, Japan-Environmental change in the last 200years- International conference

    13th Annual V.M Goldschmidt Conference 

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    Event date: 2003.9

    Language:English   Presentation type:Poster presentation  

    Country:Japan  

  78. 最近落下した隕石ならびに南極やまと隕石の14C濃度測定

    照井 敦・南 雅代・中村俊夫

    第15回名古屋大学タンデトロン加速器質量分析計シンポジウム 

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    Event date: 2003.1

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  79. Sr isotopic ratio of sediments in Lake Biwa-Environmental change in the past a hundred of years-. International conference

    Japan-Korea joint meeting of Isotope-ratio Mass Spectrometry 

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    Event date: 2002.11

    Language:English   Presentation type:Poster presentation  

  80. Chemical techniques to extract organic fractions from fossil bones for accurate 14C dating. International conference

    9th International Conference on Accelerator Mass Spectrometry 

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    Event date: 2002.9

    Language:English   Presentation type:Poster presentation  

  81. Carbon-14 terrestrial ages of Meteorites International conference

    Twentyseventh Symposium on Antarctic Meteorites, National Institute of Polar Research 

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    Event date: 2002.6

    Language:English   Presentation type:Oral presentation (general)  

  82. イラン・アルセンジャンA5-3洞窟遺跡から採取された炭化物の年代測定 International conference

    冨山慎二, 南 雅代, 常木 晃, 中村俊夫

    第15回AMSシンポジウム  2013.3.9 

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    Language:Japanese   Presentation type:Poster presentation  

  83. Pb同位体比の全国地球化学図作成に向けての課題 International conference

    城森由佳, 南 雅代, 谷水雅治, 淺原良浩

    平成24年度共同利用・共同研究成果発表会  2013.2.28 

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    Language:Japanese   Presentation type:Poster presentation  

    Venue:高知大学海洋コア総合研究センター  

  84. 骨試料の年代測定 International conference

    南 雅代

    第37回フィッション・トラック研究会  2013.2.23 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:筑波大学  

  85. 実構造物中のコンクリートの中性化進行評価−14C, δ13C・δ18O, EPMA分析から何が言えるか− International conference

    南 雅代

    第25回名古屋大学年代測定総合研究センターシンポジウム  2013.1.16 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:名古屋大学  

  86. 考古学・文化財科学分野に新たな知見を与える同位体 International conference

    南 雅代

    日本質量分析学会2012年度同位体比部会  2012.11.21 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:仙台秋保温泉  

  87. 北海道の河川堆積物を用いた87Sr/86Sr同位体比分布 International conference

    城森由佳, 南 雅代, 太田充恒, 今井 登

    日本地球化学会第59回年会  2012.9.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:九州大学  

  88. 河川堆積物を用いた全国地質Sr同位体比マップ−産地推定のための基礎データ− International conference

    南 雅代, 城森由佳, 長谷和麿, 太田充恒, 今井 登

    日本地球化学会第59回年会  2012.9.11 

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    Language:Japanese   Presentation type:Oral presentation (general)  

  89. 微少量炭素試料の14C測定法の検討 International conference

    加藤ともみ, 南 雅代, 中村俊夫

    日本地球化学会第59回年会  2012.9.11 

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  90. Contribution of river and subsurface water of limestone districts to carbon source at Lake Biwa, Japan

    Miyata, Y, Aramaki, T, Minami, M, Ohta, T, Nakamura, T

    The 21h International Radiocarbon Conference  2012.7.9 

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  91. Old apparent 14C ages of a peat core from Rishiri Island, northern Japan.

    Kono, M, Minami, M, Tanimizu, M, Asahara, Y, Hosono, T, Nakamura, T

    The 21h International Radiocarbon Conference  2012.7.9 

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  92. Is ultrafiltration effective for accurate 14C-dating of fossil bone excavated in Japan?

    The 21h International Radiocarbon Conference  2012.7.9 

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    Language:English   Presentation type:Oral presentation (general)  

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Research Project for Joint Research, Competitive Funding, etc. 4

  1. AMSによる14C年代測定のためのごく微量試料調製システムの共同開発研究

    2009 - 2010

    名古屋大学総長裁量経費 

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    Grant type:Competitive

  2. 堆積物の有機金属から探る琵琶湖の環境

    2004 - 2005

    昭和シェル石油環境研究助成 

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    Grant type:Competitive

  3. 地圏-水圏-生命圏環境フィールドワークCOEを目指して

    2004

    名古屋大学総長裁量経費 

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    Grant type:Competitive

  4. 化石骨から抽出した無機および有機成分分析に基づく古環境復元

    2002 - 2003

    住友財団環境研究助成 

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    Grant type:Competitive

KAKENHI (Grants-in-Aid for Scientific Research) 33

  1. Fundamental study on reliable radiocarbon dating and diet reconstruction of cremated bones, and its extending to archeological field

    Grant number:18H00756  2018.4 - 2021.3

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    Authorship:Principal investigator 

    Grant amount:\16900000 ( Direct Cost: \13000000 、 Indirect Cost:\3900000 )

  2. Establishment of a method of "natural conversion of cremated bones into soil"

    Grant number:19K21583  2019.6 - 2021.3

    Grant-in-Aid for Challenging Research (Exploratory)

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    Authorship:Principal investigator 

    Grant amount:\6370000 ( Direct Cost: \4900000 、 Indirect Cost:\1470000 )

  3. Attempt on paleoclimate reconstruction of West Asia using speleothem and travertine samples collected in Iran

    Grant number:19H05035  2019.4 - 2021.3

    Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

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    Authorship:Principal investigator 

    Grant amount:\5200000 ( Direct Cost: \4000000 、 Indirect Cost:\1200000 )

  4. 火葬骨のヒドロキシアパタイトのマルチ同位体分析による食性解析

    Grant number:21H04359  2021.4 - 2026.3

    南 雅代

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    Authorship:Principal investigator 

    Grant amount:\42120000 ( Direct Cost: \32400000 、 Indirect Cost:\9720000 )

  5. Development of long-term self-sealing technology of ground water pathways by learning of natural carbonate concretions

    Grant number:18H03893  2018.4 - 2022.3

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    Authorship:Coinvestigator(s) 

  6. Radiocarbon dating of ancient iron artifacts with high precision: Extension of measurements from metal iron to rusty iron samples

    Grant number:17H02017  2017.4 - 2021.3

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    Authorship:Coinvestigator(s) 

  7. 大陸縫合帯イランの鉱床成因解析-新しい同位体地化学探査技術の実用化-

    Grant number:17H01671  2017.4 - 2021.3

    淺原 良浩

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    Authorship:Coinvestigator(s) 

    本調査研究の目的は、Rb-Sr系、Sm-Nd系などの天然の放射壊変系同位体の分析を、熱水鉱床、堆積鉱床などの多様な鉱床に適用し、得られた同位体初生値と年代値に基づいて鉱床成因解析を行うことである。具体的には、大陸縫合帯であるイラン国内における火成活動と鉱床生成の関連性を明らかにするため、ザグロス山脈北西部およびアルボルズ山脈西部を対象に現地調査を行い、鉱石、鉱床母岩、貫入火成岩などの化学分析・同位体分析を実施し、新しい同位体地化学探査の実用化を目指している。3年目は、2019年4~5月(11日間)および10月(10日間)に現地調査を行った。調査地域は、ザグロス造山帯北西部の白亜紀花崗岩体(ゴルベ地域、ウルミエ湖周辺)と第三紀・第四紀の火山岩類(タカブ地域、サハンド地域)である。4月の調査は、代表者、分担者1名、協力者6名(日本側の大学院生1名、イラン側の研究者2名と大学院生3名)の計8名で、10月の調査は、代表者、 分担者1名、協力者4名(日本側の大学院生1名、イラン側の研究者3名)の計6名で実施した。採取した花崗岩、閃緑岩、安山岩の試料について薄片観察を行った後、名古屋大学で化学分析とRb-Sr、Sm-Nd系の同位体分析、LA-ICP-MSによるジルコン年代測定を行った。タカブ地域の火山岩類のSr-Nd同位体初生値、微量元素組成とジルコン年代について詳細に解析を行った結果、プレート衝突に伴う第三紀のマグマ活動が複数のステージに分類されることが明らかとなった。このマグマ活動(マグマ源)の違いはザグロス造山帯北西部の鉱床成因解析の重要な手掛かりとなるものであり、本調査研究3年目の重要な成果である。本研究成果に関する論文は執筆中であり、2020年夏頃までに国際誌に投稿する予定である。
    交付申請書に記載した2019年度(3年目)当初に予定していた研究実施計画の内容は十分達成している。予定していた春と秋の2回の現地調査、採取した試料の化学分析および同位体分析は当初予定どおり完了し、2018年度および2019年度の分析結果に基づく論文執筆は順調に進み、年度当初に予定していなかった研究も含めて、2019年度の研究は当初計画以上に進展している。その具体的な内容は次のとおりである。
    (1)イラン北西部における希土類元素(レアアース)の資源ポテンシャルに関する評価を実施した。これは、年度当初には予定していなかった研究である。本調査研究(H29~R02)およびH25~H28の基盤研究(B)で積み上げてきたイラン北西部に広がる花崗岩の希土類元素濃度データをコンパイルし、希土類元素の高濃度分布地域と火成活動、テクトニクスとの関係を明らかにするとともに、資源ポテンシャルの高い地域の抽出を試みた。これらの成果に関する論文は、受理されており、2020年度中に公表される予定である。
    (2)2019年度に公表された論文以外にも、印刷中(in press)の論文は7編、投稿中の論文は3編あり、順調に成果公表が進んでいる。
    2019年度の研究実施計画は、以上のとおり当初の計画以上に進展しており、最終年度(2020年度)で当初の研究目的を十分に達成できる見通しがある。
    2020年度(最終年度)の現地調査は10月に実施する予定であり、準備を進めている。研究代表者、分担者がイランでの現地調査を実施できない場合は、現地の研究協力者と連携して、現地協力者が現地調査、試料採取を進める。昨年度までに調査を実施した西アゼルバイジャン州のウルミエ湖周辺からクルジスタン州西部の再調査および追加試料採取を主に実施する。この追調査は、これまでの分析結果から当初予想していなかった新たな知見が得られる可能性が出てきたため、その可能性を確認することが目的である。また、これまで鉱床母岩としての火成岩の成因解析だけでなく、マグマ活動に関わる深部流体の解析も行うため、昨年度までに採取した火山周辺の地下水試料(温泉水)の化学分析、同位体分析にも新たに取り組む。
    10月には、イランの研究協力者との共同現地調査だけでなく研究総括を含めた研究打合せを予定しているが、実施できない場合に備えて、すでにメール等で緊密に連絡を取り合い、最終年度の研究が滞りなく推進できる体制を整えている。成果公表については当初予定以上に進んでおり、2020年度も3~4編の論文を投稿する予定である。

  8. Achievement of accurate C-14 dating for charcoal based on a chemical index

    Grant number:15H02947  2015.4 - 2018.3

    MINAMI MASAYO

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    Grant amount:\18980000 ( Direct Cost: \14600000 、 Indirect Cost:\4380000 )

    This study assesses two pre-treatments of charcoal samples: acid-base-acid (ABA) treatment and acid-base-oxidation with stepped combustion (ABOx-SC) treatment. In addition to C14, the effects of the treatments on the chemical structure and composition of charcoal were studied.
    The ABOx-treated charcoal yielded older C14 dates than the ABA-treated samples, probably owing to the effects of removing organic contaminants bound to the edges of the aromatic molecular structures produced by the original pyrolysis. This investigation of the structural and compositional changes of charcoal during its pre-treatment demonstrates that oxidation treatment and stepped combustion can remove contaminants preferentially from the ABA-treated charcoal and ABOx-treated charcoal, respectively. Especially, the stepped combustion, not the chemical oxidation, is a key to reduce contaminant residue left after ABA and ABOx treatments.

  9. Understanding the process of spherical carbonate concretions formation and its application to civil engineering

    Grant number:15H04224  2015.4 - 2018.3

    Yoshida Hidekzau

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    Based on the study, the process of spherical concretions formation was revealed as follows; 1)spherical carbonate concretions are only found in marine sediments. 2)Sphere is formed by the diffusive process. 3)The reason why carbonate has been accumulated, is the process by the reaction with carbon and calcium in the sea water. 4)The fossils inside was well preserved, because of the reason by self sealing. 5)The reaction of carbon and calcium to form concretions is quite rapidly that before we had thought.

  10. Calibration of 14C ages to calendar years according to annual-year-based 14C data and its application to wiggle matching

    Grant number:26284120  2014.4 - 2017.3

    Nakamura Toshio

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    We have measured the 14C ages of annual rings from several Japanese trees, and compared the tree-ring 14C ages with the corresponding 14C ages of IntCal13 datasets. It was revealed that the 14C ages of the annual rings of Japanese trees are not consistent with those of the IntCal13 in some instances. Many cases of 14C ages of tree rings are older than those of IntCal13, but younger than those of SHCal13 datasets. This suggests that calibration of the 14C dates of Japanese samples with IntCal13 induces additional systematic shifts of calibrated ages toward older ages by about 10-30 yr compared with the sample optimum calendar ages. To overcome this problem, first of all, we need to collect high quality 14C age data for Japanese samples.

  11. Attempt on accurate radiocarbon dating of carbonate hydroxyapatite in a cremated bone

    Grant number:26560144  2014.4 - 2017.3

    Masayo Minami

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    Grant amount:\3770000 ( Direct Cost: \2900000 、 Indirect Cost:\870000 )

    The purpose of this study is to examine whether or not inorganic carbonate hydroxyapatite (CHa) in a cremated bone, which remains little organic collagen, can provide accurate radiocarbon (C14) dates. The obtained results are as follows: 1) The cremated bone suffering from heat at the high temperature more than 750°C have high crystalline of apatite and are not easily contaminated by exogenous contaminants during burial, 2) Sample treatment of a cremated bone with 0.1 mol/L acetic acid for 1 h under vacuum can remove secondary carbonate and foreign carbon effectively to extract innate carbon in the bone CHa, and 3) The CHa in cremated bone with high crystalline of apatite is useful for accurate C14 dating.

  12. Radiocarbon Intercomparison on Chemical Experiments, Water series (RICE-W)

    Grant number:26340017  2014.4 - 2017.3

    Takahashi Hiroshi

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    We initiated the Radiocarbon Intercomparison on Chemical Experiments, Water series (RICE-W) program to examine sample preparations for water 14C analysis. First, we used RICE-W01-W08 samples to examine the air-shielding of water storage bottles and the effectiveness of toxic substance for biological activity. The secular 14C change showed that PAN or glass bottles are appropriate for storage, PP bottles are inappropriate, and a toxic substance is necessary.
    Sterilized samples are unsuitable for RICE-W program because they require special procedures for transport and disposal. We prepared new water standards, RICE-W09-W14, using chemical reagents with no toxic substances. The chemical compositions of the standards were arranged with wide-ranging 14C similar to those of natural water. While almost all of the laboratories had nearly identical 14C concentrations, the 14C results prepared by the precipitation method sometimes represented slightly high values.

  13. Verification of terrestrial radiocarbon age calibration data

    Grant number:25241007  2013.4 - 2017.3

    Kitagawa Hiroyuki

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    Radiocarbon dates do not equate directly with calendar time and must be corrected using a calibration curve. A calibration data set during the past 50 ka (e.g. IntCal13) has from radiocarbon date of known-age samples such as wood, fossil coral, cave deposit (stalactite) and lacustrine varve sediments. The high-resolution 14C dating has been conducted for the terrestrial plant remains in a sediment samples from the deepest part of the Dead Sea (the ICDP 5017-1 site), which was recovered by the Dead Sea Deep Drilling Project (DSDDP) under the auspices of the International Continental Scientific Drilling Program (ICDP). The data set were compared with the U/Th-date of aragonite deposited chemically from lake water to validate and improve the latest calibration data: IntCal13.

  14. Reconstruction of paleo diet by organic geochemical anarisys

    Grant number:25282072  2013.4 - 2016.3

    Yoshiki Miyata

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    We studied radiocarbon dates and stable isotope composition in archaeological remains and lipids in pottery from a few archaeological site, Japan. These results of radiocarbon dating, stable isotope and lipid analysis are consistent with archaeological context. Therefore we have reconstructed paleodiet using Jomon pottery from a few archaeological site.

  15. アミノ酸ラセミ化法を用いた骨遺物の年代測定

    Grant number:25101501  2013.4 - 2015.3

    新学術領域研究(研究領域提案型)

    南 雅代

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    Grant amount:\5200000 ( Direct Cost: \4000000 、 Indirect Cost:\1200000 )

    昨年度の研究により,イラン・アルセンジャンTang-e Sikan洞窟遺跡から出土した骨中には有機成分がほとんど残存していないことが明らかとなり,アミノ酸ラセミ化を用いた年代測定は困難であると考えられた。そこで 今年度は,以下の3点について研究を推進していき,他の手法によって遺跡のシークエンスに正確な年代を付与することを目指した。
    (1) ABOx-SC法による炭化物の高確度な14C年代測定法の確立: 昨年度に立ち上げたABOx-SC法(Radiocarbon誌に投稿し,現在査読中)をTang-e Sikan洞窟遺構の各層から得られた炭化物に適用して14C年代決定を行い,ABA法による年代値と比較を行いつつ,各層に正確な14C年代を付与した。石器の型式から推定されている年代,イラン南部地域の遺跡に関して報告されている他の年代と比較しながら,この地域の編年の再構築を行った,結果を論文にまとめ,まもなく国際誌に投稿予定である。
    (2) イラク・クルディスタンQalat Said Ahmadan (QSA)遺跡の編年構築: QSA遺跡から採取した炭化物の高確度14C年代測定を行った。その結果,PPN層は7570-7385 cal BP,proto Hassuna―Hassuna層は6230-6010 cal BP,Samarra層は6065-5930 cal BPという年代を示すことが明らかになった。得られた結果をラフィダーン誌に報告した。
    (3) 骨試料の炭酸ヒドロキシアパタイトによる14C年代測定:骨試料の無機成分である炭酸ヒドロキシアパタイトを用いた年代測定法の検討を開始した。年代既知の骨を用いた検証の結果,高温で焼かれた骨は,炭酸ヒドロキシアパタイトによる14C年代測定法が有効であることがわかったが,Tang-e Sikan洞窟遺跡から出土した骨に対する有効性は確認できず, 14C年代測定を行うまでには至らなかった。
    26年度が最終年度であるため、記入しない。
    26年度が最終年度であるため、記入しない。

  16. Development of analytical technique for environmental change using isotopes of organometals

    Grant number:23510005  2011 - 2013

    ASAHARA Yoshihiro

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    Primary productivity is very high in the western subarctic Pacific (WSP), most likely because of terrigenous input including nutrients and iron. To reveal the origin and transport processes of the iron, stable isotopes of iron were used in this study. Results of the isotope ratios are summarized as follows: Most of dissolved iron from the Amur River chemically precipitates and deposits in the estuary, the deposited particulate iron is resuspended and flows out to the Okhotsk Sea intermediate water, and it is transported southward along the east coast of Sakhalin Island and partly flows out into the WSP.

  17. Amino acid racemization dating is effective for fossil bones of more than fifty thousand dates?

    Grant number:23650569  2011 - 2012

    MINAMI Masayo

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    Grant amount:\3770000 ( Direct Cost: \2900000 、 Indirect Cost:\870000 )

    Several basic studies investigating bone 14C-dating such as a bone preparation technique using ultrafiltration for effective removing foreign materials, AMS-14C analysis by small carbon of 0.1 mg, and chemical analysis for each part from an individual were performed to promote this study.
    We attempted determining 14C and amino acid racemization dates for some bone samples of more than 50,000 BP, collected from a cave located in Arsanjan, southern Iran, but were not able to get data because of little organic remains in the bones. This result suggests that apply of the amino acid racemization dating is difficult for old, poorly-preserved bones like samples used in this study.

  18. Geochemical map of strontium isotope ratio in Japan: a database for tracing of ancient human migration and archeological remains transport

    Grant number:22300308  2010.4 - 2015.3

    MINAMI Masayo

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    Grant amount:\15600000 ( Direct Cost: \12000000 、 Indirect Cost:\3600000 )

    We cariied out a basic research for geochemical mapping of Sr isotope ratio, which is needed for multiple purposes such as detection of food-producing areas, tracing of patterns of ancient human migration, and culture change in earlier times. First, we revealed that 1) catchment outlet stream sediment (particle size of <180μm) is most suitable as a sample for mapping of Sr isotope ratio, and then that 2) Sr isotope ratio of Bulk Sr in stream sediment reflects that of parent rock and soil around the stream, while Sr isotope ratio of Exchangeable Sr in stream sediment reflects that of water and biological samples of vegetation and fauna growing around the stream. Based on the results, we have completed a nationwide geochemical map of Sr isotope ratio by Sr isotope ratio measurement of 1084 samples of stream sediment in Japan.

  19. Accurate determination of platinum group elements in felsic rocks using isotope dilution neutron activation analysis to study the genesis of the rocks

    Grant number:22340165  2010.4 - 2014.3

    TANAKA Tsuyoshi

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    Platinum group elements such as iridium, osmium and ruthenium are contained very small abundance in felsic rocks and even the abundance in reference rocks have not been determined clearly. This study combined fire assay method to concentrate platinum group elements from big amount of samples with isotope dilution neutron activation analysis to get accurate recovery and high sensitivity for the elements. The original research plan was modified by shutdown of research nuclear reactor at Tokai by big earthquake in 2011.

  20. Inter-comparison of 14C dates on tree rings among 14C laboratories and construction of calibration datasets for Japanese archeological remains

    Grant number:22240082  2010.4 - 2014.3

    NAKAMURA TOSHIO

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    Recently it has been recognized that calibration with IntCal09 of 14C ages of Japanese samples tended to give older calendar ages than those expected. To test the applicability of IntCal09 calibration datasets to Japanese samples, as well as to increase datasets for relation ship between 14C age and calendar age for Japanese samples, we measured 14C ages of annual rings from three Japanese trees with calendar dates ranging from ca. 2000 yr old to present, and we compared the tree-ring 14C age with the corresponding 14C age of IntCal09. It was revealed that the 14C ages of the annual rings of Japanese trees are not consistent with IntCal09 datasets in some instances. Many cases of 14C age of tree rings are older than those of IntCal09, but younger than those of SHCal04 datasets. The average shift in Nagoya 14C age from IntCal09 datasets was around 20 to 30 14C years to older ages.It is required to establish J-Cal, the calibration datasets for Japanese samples.

  21. Geology of the Proterozoic basement rocks and Permo-Triassic allochthons in the Geonggi massif, Korean Peninsula

    Grant number:21540471  2009 - 2011

    SUZUKI Kazuhiro

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    The Gyeonggi massif in the Korean Peninsula comprises granulite-and amphibolite-facies units that are separated by an extensive mylonite zone. Granulites distant from the mylonite zone yield CHIME ages of c. 1860Ma. Granulites near the mylonite zone show growth of cordierite and biotite aggregates around garnet grains after the ductile shearing, and yield 247-240Ma monazite domains on and within c. 1860 Ma monazite grains. The paragneisses in the amphibolite-facies unit contain Neoproterozoic detrital zircon grains and monazite grains with unequivocal metamorphic ages of 251-243Ma. Two crustal units underwent differing evolutional histories prior to amalgamation. The Permo-Triassic amphibolite-facies unit detached from the Yangtzu block and was thrust over the granulite-facies unit of the North China block during the Sulu orogeny. Permo-Triassic metamorphic overprints on the latter are attributed to contact metamorphism from the hot allochthon.

  22. 放射性炭素を用いたコンクリート劣化の定量的解析手法の構築に向けて

    Grant number:21654070  2009 - 2010

    南 雅代

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    Grant amount:\3100000 ( Direct Cost: \3100000 )

    本年度は、昨年度得られた昭和42年建造の実構造物コンクリートの^<14>C深度プロファイルの解釈、コア深部の^<14>C起源解明に重点を置いた。具体的には、1)新鮮なコンクリートと、その原料であるセメント・混和剤の^<14>Cならびに炭素・酸素同位体比の測定、2)コンクリート中性化領域の薄片観察・元素マッピング、を行った。
    1. 新鮮なコンクリート、セメント、混和剤の^<14>C濃度、炭素含有量、炭素・酸素同位体比の結果から、新鮮なコンクリートの炭酸塩中の^<14>Cは、原材料のセメントの炭素(dead^<14>C)とコンクリートを製造する際に混入した大気炭素(modern^<14>C)が約1:1で混合したものであることがわかった。このことから、実構造物コンクリート深部の^<14>C値は、コンクリート製造時の初生値であると考えられ、コンクリート表層1cm部分の中性化は2~4年という非常に短時間で進行していたことが明らかとなった。中性化微少領域の^<14>C測定に向けての、微少炭素量による14C測定法の開発も行なった。
    2. 実構造物コンクリートコアに対して、劣化断面に垂直に薄片を作成し、中性化に伴う組織劣化の際、どのような結晶構造変化並びに物質移動を起こしているかをEPMAによって詳細に観察した。コンクリートコアの切断にはレーザーを用い、薄片作成時の炭酸化を極力防いだ。その結果、中性化による組織劣化、物質移動の様相が鮮明に得られ、中性化が進行しているコア表面部、および骨材の周辺部においては二次鉱物が成長し、Caの他、Na、K等の元素が濃集していることが明らかになった。
    以上のことから、コンクリート中の^<14>C濃度および炭素・酸素同位体比は、建造物の中性化進行プロセスを空間的かっ時間的に解析できる有効な手段であることが明らかになり、今後、コンクリート建造物の中性化速度の定量的評価に広く応用可能と考えられる。

  23. A study on estimation of calendar age for wooden cultural properties with high precision by wiggle matching

    Grant number:19300300  2007 - 2009

    NAKAMURA Toshio

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    To estimate the calendar age of the outermost ring of the historical wooden material by wiggle matching, 14C age should be measured for most of its annual rings. The matching error is, however, greatly dependent on the calendar-age range to be fitted. The error is large for the calendar-age period where 14C age does not change much and is rather constant. When 14C age shows an inverse-N-shaped change in increase of calendar age, the wiggle matching analysis may show two possible age ranges. The error of wiggle matching even for only two annual ring samples is rather small for the period where 14C age changes monotonously and rapidly.

  24. Archaeological application of strontium isotope ratios in human bone based on geochemical analysis

    Grant number:19300301  2007 - 2009

    MINAMI Masayo

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    Grant amount:\17680000 ( Direct Cost: \13600000 、 Indirect Cost:\4080000 )

    ・ We confirmed that Sr isotope ratio of an animal bone reflects the isotopic ratios of its provenance geology from analysis of modern animal and fish, and geological samples.
    ・ Some human bone and tooth samples excavated from archaeological sites in the Yuigahama area, Kamakura, Japan were measured for Sr isotope ratios. Diagenetic Sr had completely replaced biogenic Sr in the bones, while biogenic Sr could remain in the teeth enamel and be used for characterizing past human migration and mobility.
    ・ We have set about making geochemical map of Sr isotope ratios in all Japan, which is necessary for Sr isotope analysis of archaeological skeletons.
    ・ A small-mass bone sample preparation system was investigated for ^<14>C bone dating with high accuracy and precision.

  25. Diverse and large Archean microfossil assemblage from the Pilbara Craton -its origin and significance in the early evolution of life-

    Grant number:19340150  2007 - 2009

    SUGITANI Kenichiro

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    Morphologically diverse microfossils from the ca. 3.0 Ga Farrel Quartzite in the Pilbara Craton, Western Australia were studied comprehensively, including accumulation of photo data of microfossils, palynological extraction of microfossils, reconstruction of 3-D images, reconstruction of life cycle and taxonomic analyses, analyses of rare-earth elements in host cherts, and Nano-SIMS elemental mapping. The results of these studies are consistent with the biogenicity of the Farrel Quartzite microstructures, and suggest that the surface ecosystem in the Archean was much more diverse than currently postulated and the possibility that the assemblage includes oxygen-producing photosynthetic bacteria and even eukaryotes.

  26. Reexamination of CHIME ages measured on rocks from orogenic belts in the Japanese Islands and the eastern margin of Asian Continent

    Grant number:19340149  2007 - 2008

    SUZUKI Kazuhiro

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  27. ELECTROMAGNETIC STUDY AND 14C DATING STUDY ON ARCHAEOLOGICAL RUINS AND OBJECTS OF MEDIEVAL PERIOD

    Grant number:19900108  2007

    SAKAI Hideo

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    We conducted the studies on the objects at medieval period, by the magnetic properties of remains, the 14C dating, and the geophysical prospecting.
    (1) Archaeomagnetic dating was applied at the archaeological sites of Hokuriku and Hokkaido regions. As the standard geomagnetic secular variation for the dating is made from the data at the southwest Japan, it is necessary to examine whether this standard variation (SGV-NWJAPAN) is applicable to the object area.
    The archaeomagnetic data studied at several sites in Hokkaido shows that the modified SGV-NWJAPAN is useful for dating. Further, the study at several sites of Vladivostok in Russia whose latitude is almost same with that of Hokkaido shows that the archaeomagnetism at the Hokkaido is useful for the dating.
    At the kilns of Suzu-earthenware in Noto-town of Ishikawa Prefecture, the archaeomagnetic ages are determined with less error between 13^<th> and 14^<th> centuries. These ages coincide with the archaeologically estimated ages and also with the 14C ages studied from the charcoal. In the investigated area, the survey by the ground penetrating radar was done. The survey data clear the unknown kilns underground which are confirmed by the excavation. These results contribute in the application of these areas for the national designation archaeological site.
    (2) By the l4C dating study, the following remarkable results are obtained.
    (1)the age of the end in Satsumon period, Hokkaido is determined as ca. AD.936
    (2)the wall painting at the Bamyan site in Afghanistan covers the age from 5, 6th to the middle of 9^<th> century
    (3)the war damage at Kamakura is studied with the 14C age of the bones (especially, around the age of the end in Kamakura period).
    Further, the valuable results are obtained about the 14C ages of the ancient iron materials and those of the cremated bones.

  28. 古代交易ネットワーク解明を目指した骨中Sr同位体分析法の開発

    2006.4 - 2008.3

    科学研究費補助金  研究拠点形成費補助金(21世紀COE「同位体が拓く未来」)若手研究者研究

    南 雅代

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  29. 微生物の活動が考古学資料のC-14年代に及ぼす影響

    Grant number:16652057  2004 - 2005

    萌芽研究

    中村 俊夫

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    ミカンの皮にカビ発生させ、ミカンの皮とカビにおける炭素同位体組成の変化を調べる研究を行った.ミカンから繊維状のカビを採取した.また同様にミカンの皮を採取して比較に用いた.12mgから25mgのカビを線状酸化銅の助燃剤と共にバイコール管に入れて真空封管しこれを900℃に加熱してカビを燃焼して二酸化炭素に変えた.二酸化炭素は4-9mgが回収され、今回回収したカビには、重量比で35%程度の炭素が含まれていることが明らかとなった.一方、ミカンの皮については、40%の炭素収率が得られた.次にカビおよびミカンの皮から回収した二酸化炭素をグラファイトに変え、タンデトロン加速器質量分析計を用いて、炭素同位体(12C,13C,14C)の測定を行った.13C/12C比についてみると、カビはミカンの皮より大きな13C/12C比を示した.この結果から、カビの発生・成長における炭素取り込みに炭素同位体分別の影響が考えられる.また、14C濃度は、カビとミカンの皮とで誤差範囲内で一致した.以上のことから、カビが発生し成長するための炭素はミカンの炭素が使われたと考えられる.また、お茶に生えたカビについても、同様な実験を行い、カビとお茶の葉の炭素同位体組成はよく一致した.この結果は、上記の結論を支持する.
    今回の研究から、カビとカビが生える基質の14C濃度が誤差範囲内で一致するが示された.このことから、文化財資料に発生するカビは、その資料自身に含まれる炭素を吸収して発生・成長することが示唆される.従って、カビの炭素は、基質の炭素と同じ14C年代を示すはずである.14C年代測定では、文化財資料に生えたカビは、もちろん取り除いた方がよいが、完全に取り除くことをそれほど厳密に行う必要はないことが示された.

  30. 中世都市遺跡の電磁気調査と^<14>C年代法による編年の研究

    Grant number:15068206  2003 - 2007

    酒井 英男

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    本計画班では,遺跡探査,磁気物性と14C年代法の研究を行っている.特定領域研究において年代は基本課題である.考古地磁気研究として研究が進んでいない北海道で,対雁遺跡,厚真町モイ遺跡,斜里町ウトロ遺跡等で年代推定を行った.また珠洲市粟津小学校遺跡竈跡,能都町珠洲焼き窯,滋賀県瀬田廃寺遺跡等での調査を行った.更に臼杵先生班と共同でロシア・ウラジオストック近郊の東夏代(または金代)と推測される城郭遺跡の調査を開始し,本年度は暖炉跡焼土の研究を進めている.また地震液状化に伴う噴砂の磁化から遺跡に及んだ地震災害の年代と変形を検討できることを示し,高岡市石塚遺跡等で成果を得た.青森県十三湊遺跡では調査例の少ない青森県地磁気年代推定に成功し,また砂浜に由来する飛砂堆積物で埋まった前浜遺跡の環境変動を探る新たな調査法を試みて成果を得た.
    14C年代測定法では広範囲の資料での研究を実施し,編年研究では以下の考古資料について成果を得た.愛知県陶磁資料館敷地内南山8号窯,石川県飯川谷製鉄遺跡・能登町行延窯跡遺跡,河ヶ谷窯跡遺跡,滋賀県瀬田廃寺,中国・韓国の建築部材,北海道の擦文時代資料,奥州平泉藤原3代関連資料,十三湊関連資料,草戸千軒資料,大津市石山寺の蔵王権現塑像,飯田市美術博物館蔵の聖徳太子絵伝,三重県甲賀市信楽町黄瀬ハンシ窯跡など.
    その他の成果として,(1)湖沼堆積物による環境変遷史:宇治市巨椋池埋め立て地試料の年代研究,(2)鎌倉由比ヶ浜南遺跡出土の刀傷のある人骨による鎌倉幕府滅亡時の年代調査,(3)擦文時代からアイヌ文化への移行期における生育期間の短い植物資料の研究から擦文時代終焉期を11〜13世紀初頭であると示した,(4)十三湊遺跡福島城跡の城門・柵の杭列木柱:古代か中世か議論されていたが,14C年代は14世紀初め〜15世紀初めと得られ,中世の可能性が極めて高いと結論できた.

  31. Dating of pre-solar material using La-Ce and Sm-Nd decay systems

    Grant number:13853001  2001 - 2005

    TANAKA Tsuyoshi

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    1)The finding of six CAI inclusions with Ce anomaly from Allende meteorite.
    Ninety CAI inclusions from Allende meteorite were analyzed for REE by INAA method. The CAI was classified into three groups by their REE abundance pattern. Six inclusions among them were found to have negative Ce anomaly.
    2)The advancement of the mass spectrometry for trace amount of Ce-Nd-Sr radiogenic isotopes acc urately.
    The analytical results for repeated analyses are 0.0225889±0.0000013 and 0.0168810±0.0000030 for ^<138>Ce/^<142>Ce and ^<136>Ce/^<142>Ce, respectively.
    3)The development of Rb-Sr isochron dating technique using the single mineral grain.
    This method enables us to draw an isochron by Rb/Sr heterogeneity reside inside the mineral grain. A K-feldspar of a dyke from Gifu Prefecture shows magmatic event and a chlorite in the same rock shows an alteration date.
    4)Many applications of ^<138>La-^<138>Ce,^<147>Sm-^<143>Nd,^<87>Rb-^<87>Sr isotope systematics to various geochemistry and cosmochemistry.
    Ce and Nd isotopes and REE pattern of Barberton sedimentary rocks were examined. Ce anomaly found in the chert was regarded as a proof of air oxygen in atmosphere. The new data indicate that the Ce anomaly was formed at 1.1Ga.
    5)The development of Sm isotopes measurement technique using double spikes and its application Our technique achieved to measure Sm isotope variations with accuracy of 0.03‰/amu(1SD) using ^<150>Sm-^<154>Sm double spikes.

  32. Geoenvironmental assessment wsing geocemical map

    Grant number:12490016  2000 - 2001

    TANAKA Tsuyoshi

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    Stream sediments from the northern parts of Aichi Prefecture through the southern parts of Gifu Prefecture were examined for geoenvironmental assessment of the area. New 1100 samples were analyzed for seventeen elements includingAl, Ca, Ce, Co, Cr, Cu, Fe, K, Mn, Mg, Na, Ni, P. Sr, Ti, V and Zn. ICP-AES andAAwere employed for analyzes. The representativeness of the analyzed data for the sampling locality is examined by means of duplicate or triplicate samplings from the same place and by repeated analyzes. The data show ±50% variations in the abundance of Ti and ±30% or less variations for other elements. This variation may have been caused by heterogeneous distribution of small accessory minerals bearing Ti. The elemental abundances vary more than ten times in the examined area. Then the geochemical map obtained here is . Significant to indicate the areal variations of elements. The stream sediments from the area where granitic rockare exposed are rich inAl, Ca, Na, K, and Sr. On the contrary, Co, Cr, Fe, Ni, V, Mn and Zn are enriched in the sediments from the area where the Tertiary sediments are dominant Correlation coefficients higher than 0.6 are found between abundances of Ca-Na-Sr-Al, P-Cu-Zn and Ti-Ce. The coefficients are remarkably higher for the samples from the area of the Tertiary sediments than for the samples from granitic region. Although one sample shows a high Cr-abundance (785ppm), which is 20 times the abundance of the average value for the Tertiary sediments, no clear evidence for artificial pollution of any elements examined here is found. Twenty additional elements including As and Sb are analyzed by INAA and XRF. The results will be published in a shorttime.

  33. 放射線照射下での水・岩石反応実験による太古代の月表面風化の研究

    Grant number:12874063  2000 - 2001

    萌芽的研究

    田中 剛

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    アポロ月試料の希土類元素存在度パターンに見られる正のセリウム存在度異常がなぜ生じたかについて、申請者は太古代の月に水(氷/水蒸気)があった頃に月表面で放射線と水との反応により反応性の高いOHやH_2O_2などのラジカルが生じ、それらと岩石の風化反応によるとの仮説を提唱した。本研究は、その仮説の当否を実験的に検証するために行う。
    前年度までは、塩酸あるいは硫酸酸性溶液中において岩石からの元素溶出実験をすすめてきた。これは、酸性条件で岩石からの溶出量を増やし、小規模な実験生成物をもちいた測定を容易にするためであった。しかし、天然で進行しているのは、重炭酸による弱酸性環境下での風化作用である。この条件下での溶出実験では、溶出した主成分元素の測定は可能なものの、微量成分、特に希土類元素の定量は不可能であった。これは溶出した希土類元素がすぐに再沈殿することによると考え、溶出した溶液を、すみやかにイオン交換カラムに送り込み吸着させることにより、溶出元素を隔離し、溶出現象のみをとりだして、定量するシステムを考案した。このシステムは、送液ポンプをもちいて、反応系から反応溶液をすぐさまイオン交換樹脂に導くもので、この方法により、希土類元素が、約300時間の短い反応期間においても従来考えられていたよりも遥かに多量(Release Ratioにして1/5000)に溶出している事が判明した。また、溶出液には著しいW型のテトラド効果が見られた。本実験を高木ほか(GCA投稿中)に準じ鉱物をもちいた実験への展開継続を進めている。結果をまとめ平成15年度基盤研究への応募を予定している。

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Teaching Experience (On-campus) 6

  1. 地球惑星科学セミナーI

    2020

  2. 地球史学セミナー

    2020

  3. Environmental Chemistry

    2020

  4. 地球惑星科学の最前線

    2020

  5. Isotope Geochemistry

    2020

  6. Special Lecture on Earth History

    2020

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