Updated on 2021/10/26

写真a

 
MIMURA, Koichi
 
Organization
Graduate School of Environmental Studies Department of Earth and Environmental Sciences Geochemistry and Cosmochemistry Associate professor
Graduate School
Graduate School of Environmental Studies
Undergraduate School
School of Science
Title
Associate professor
Contact information
メールアドレス

Degree 1

  1. Doctor ( 1995.3   Nagoya University ) 

Research Interests 9

  1. プレカンブリアン

  2. 進化

  3. 衝撃反応

  4. 生命の起源

  5. 微生物

  6. 有機物

  7. 地球外物質

  8. 隕石

  9. 二酸化炭素固定

Research Areas 1

  1. Others / Others  / Geochemistry

Current Research Project and SDGs 4

  1. The evolution of biogenic compounds in the universe and on the earth

  2. 大気中のCO2削減につながる技術開発

  3. Shock synthesis of organic materials

  4. 太古代の微化石の形態とその多様性

Research History 4

  1. 名古屋大学環境学研究科   准教授

    2007.4

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    Country:Japan

  2. 名古屋大学環境学研究科   助教授

    2005.11 - 2007.3

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    Country:Japan

  3. 名古屋大学環境学研究科   助手

    2001.4 - 2005.10

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    Country:Japan

  4. 名古屋大学理学部   助手

    1994.4 - 2001.3

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    Country:Japan

Education 2

  1. Nagoya University   Graduate School, Division of Natural Science

    1990.4 - 1992.3

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    Country: Japan

  2. Nagoya University   Faculty of Science   Department of earth and planetary sciences

    1986.4 - 1990.3

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    Country: Japan

Professional Memberships 2

  1. 有機地球化学会   編集委員

    2009.4

  2. 日本地球化学会

    2008.4

Committee Memberships 1

  1. 愛知県環境審議会   専門委員  

    2020.11   

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    Committee type:Municipal

Awards 5

  1. The Geochemical Journal Award of 2015

    2015.8   The Geochemical Society of Japan  

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    Country:Japan

  2. The Geochemical Journal Award of 2012

    2012.6   The Geochemical Society of Japan  

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    Country:Japan

  3. 文部科学大臣表彰若手科学者賞

    2005.4   文部科学省  

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    Country:Japan

  4. 東海学術奨励賞

    2002  

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    Country:Japan

  5. 日本地球化学会奨励賞

    1999   日本地球化学会  

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    Country:Japan

 

Papers 60

  1. Polymerization Mechanism of Nitrogen-Containing Heteroaromatic Compound Under High-Pressure and High-Temperature Conditions Reviewed International coauthorship International journal

    Shinozaki Ayako, Mimura Koichi, Nishida Tamihito, Cody George D.

    JOURNAL OF PHYSICAL CHEMISTRY A   Vol. 125 ( 1 ) page: 376 - 386   2021.1

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

    DOI: 10.1021/acs.jpca.0c08288

    Web of Science

  2. Constraints on the thermal history of the Allende (CV3) meteorite by gradual and stepwise pyrolyses of insoluble organic matter Reviewed International journal

    Mimura Koichi, Okumura Fumiaki, Harada Naomi

    GEOCHEMICAL JOURNAL   Vol. 54 ( 4 ) page: 255 - 265   2020.8

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2343/geochemj.2.0589

    Web of Science

  3. Preface of "Frontiers in Geochemistry: Tribute to Professor Ryuichi Sugisaki" Reviewed International journal

    Mimura Koichi

    GEOCHEMICAL JOURNAL   Vol. 54 ( 4 ) page: 145 - 145   2020.8

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Part of collection (book)  

    DOI: 10.2343/geochemj.2.0588

    Web of Science

  4. Frontiers in Geochemistry: Tribute to Professor Ryuichi Sugisaki Reviewed International journal

    Mimura Koichi, Mori Yasunori, Tanaka Tsuyoshi, Nagamine Koichiro, Yamamoto Koshi, Sugitani Kenichiro

    GEOCHEMICAL JOURNAL   Vol. 54 ( 4 ) page: 147 - 158   2020.8

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    Authorship:Lead author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.2343/geochemj.2.0580

    Web of Science

  5. Decomposition and oligomerization of 2,3-naphthyridine under high- pressure and high-temperature conditions Reviewed International journal

    Shinozaki Ayako, Mimura Koichi, Nishida Tamihito

    SCIENTIFIC REPORTS   Vol. 9   2019.5

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

    DOI: 10.1038/s41598-019-43868-2

    Web of Science

  6. Speciation of Paleoarchean Life Demonstrated by Analysis of the Morphological Variation of Lenticular Microfossils from the Pilbara Craton, Australia Reviewed

    Sugitani Kenichiro, Kohama Takashi, Mimura Koichi, Takeuchi Makoto, Senda Ryoko, Morimoto Hiroshi

    ASTROBIOLOGY   Vol. 18 ( 8 ) page: 1057-1070   2018.8

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

    DOI: 10.1089/ast.2017.1799

    Web of Science

  7. Chiral gas chromatography of 2,5-diketopiperazines following a ring-opening derivatization method for complete isomeric separation. Reviewed

    Mimura K., Okada R., and Nishida T.

    J. Chromatogr. A   Vol. 1566   page: 118-123   2018.6

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

  8. Hydrogen and Hydrocarbon Gases, Polycyclic Aromatic Hydrocarbons, and Amorphous Carbon Produced by Multiple Shock Compression of Liquid Benzene up to 27.4 GPa. Reviewed

    Mimura K., Nishida T.

    J. Phys. Chem. A   Vol. 121   page: 6471-6480   2017.8

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

  9. Formation of amorphous hydrogenated carbon from compression of benzene

    Shinozaki Ayako, Kagi Hiroyuki, Mimura Koichi

    JOINT AIRAPT-25TH & EHPRG-53RD INTERNATIONAL CONFERENCE ON HIGH PRESSURE SCIENCE AND TECHNOLOGY, 2015   Vol. 950   2017

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

    DOI: 10.1088/1742-6596/950/4/042057

    Web of Science

  10. Pressure-induced freeze concentration of alanine aqueous solution as a novel field of chemical reaction. Reviewed

    Takahashi S., Kagi H., Fujimoto C., Shinozaki A., Gotou H., Nishida T, and Mimura K.

    Chem. Lett.   Vol. 46   page: 334-337   2016.12

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

  11. Stability and partial oligomerization of naphthalene under high pressure at room temperature. Reviewed

    Shinozaki A., Mimura K., Nishida T., Inoue T., Nakano S., and Kagi H.

    Chem. Phys. Lett.   Vol. 662   page: 263-267   2016.10

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  12. Changes of chemical structure and composition of charcoal by radiocarbon pre-treatments: Decontamination by ABA and ABOx treatments. Reviewed

    Tomiyama S., Minami M., Nakamura T., Mimura K., and Kagi H.

    Radiocarbon   Vol. 58 ( 3 ) page: 565-581   2016.5

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

  13. Peptide synthesis triggered by comet impacts: A possible method for peptide delivery to the early Earth and icy satellites. Invited Reviewed

    Sugahara H., Mimura K.

    Icarus   Vol. 257   page: 103-112   2015

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

  14. Pressure-induced oligomerization of alanine at 25 °C. Reviewed

    Fujimoto C., Shinozaki A., Mimura K., Nishida T., Gotou H., Komatsu K., Kagi H.

    ChemComm     2015

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

    DOI: 10.1039/C5CC03665H

  15. A Paleoarchean coastal hydrothermal field inhabited by diverse microbial communities: the Strelley Pool Formation, Pilbara Craton, Western Australia. Reviewed

    Sugitani K., Mimura K., Takeuchi M., Yamaguchi T., Suzuki K., Senda R., Asahara Y., Wallis S., Van Kranendonk, M.

    Geobiology     2015

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

    DOI: 10.1111/gbi.12150

  16. Early evolution of large microorganisms with cytological complexity revealed by microanalyses of 3.4 Ga. organic-walled microfossils. Reviewed

    Sugitani K., Mimura K., Takeuchi M., Lepot K., Ito S., Javaux E. J.

    Geobiology     2015

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

    DOI: 10.1111/gbi.12148

  17. 三重県秩父帯阿曽カルストの石灰岩体から産出した円錐状コノドント. Reviewed

    鈴木和博,三村耕一,稲垣伸二,竹内 誠

    地質学雑誌   Vol. 121   page: 179-183   2015

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  18. Glycine oligomerization up to triglycine by shock experiments simulating comet impacts. Reviewed

    Sugahara H., Mimura K.

    Geochem. J.   Vol. 48   page: 51-62   2014

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

    DOI: 10.2343/geochemj.2.0285

  19. Shock-induced pyrolysis of amino acids at ultra high pressures ranged from 3.2 to 35.3 GPa. Reviewed

    Sugahara H. and Mimura K.

    J. Anal. Appl. Pyrolysis   Vol. 108   page: 170-175   2014

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  20. Pressure-induced oligomerization of benzene at room temperature as a precursory reaction of amorphization. Reviewed

    Shinozaki A., Mimura K., Kagi H., Komatsu K., Noguchi N., and Gotou H.

    Journal of Chemical Physics   Vol. 141   page: 084306   2014

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  21. Shock-induced pyrolysis of amino acids at ultra high pressures ranged from 3.2 to 35.3 GPa. Reviewed

    Sugahara H., Mimura K.

    J. Anal. Appl. Pyrolysis   Vol. 108   page: 170-175   2014

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  22. Microfossil assemblage from the 3400 Ma Strelly Pool Formation in the Pilbara Craton, Western Australia: Results form a new locality. Reviewed

    Sugitani K., Mimura K., Nagaoka T., Lepot K., and Takeuchi M.

    Precambrian Research   Vol. 226   page: 59-74   2013

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  23. Texture-specific isotopic compositions in 3.4 Gyr old organic matter support selective preservation in cell-like structures. Reviewed

    Lepot K., Williford K., Ushikubo T., Sugitani K., Mimura K., Spicuzza M., and Valley J.

    Geochim. Cosmochim. Acta   Vol. 112   page: 66-86   2013

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  24. Carbon isotopic analyses of ca. 3.0 Ga microstructures imply planktonic autotrophs inhabited Earth's early oceans. Reviewed

    House C. H., Oehler D. Z., Sugitani K., and Mimura K.

    Geology     2013

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

    DOI: 10.1130/G34055.1.

  25. 石灰岩のコノドント検出を容易にするアリザリンレッドS染色法の開発. Reviewed

    鈴木和博・三村耕一

    地質学雑誌   Vol. 118   page: 236-239   2012

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

  26. Another sea area separated from the Panthalassic Ocean in the Norian, the Late Triassic: the lowest Sr isotopic composition of the Ishimaki limestone in central Japan. Reviewed

    Suzuki K., Asahara Y., Mimura K., and Tanaka T.

    Chemie der Erde   Vol. 72   page: 77-84   2012

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  27. Gradual and stepwise pyrolyses of insoluble organic matter from the Murchison meteorite revealing chemical structure and isotopic distribution Reviewed

    Okumura F., Mimura K.

    Geochimica et Cosmochimica Acta   Vol. 75   page: 7063-7080   2011.9

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

  28. 衝撃によるマーチソン隕石中の水素・炭素同位体の挙動 Invited Reviewed

    三村耕一

    遊星人   Vol. 20 ( 2 ) page: 169-176   2011.4

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  29. Biogenicity of morphologically diverse carbonaceous microstructures from the ca. 3400 Ma Strelley Pool Formation, in the Pilbara craton, western Australia. Reviewed

    Sugitani, K., Lepot, K., Nagaoka, T., Mimura, K., Van Kranendonk, M., Oehler, D. Z., Walter, M. R.

    Astrobiology   Vol. 10   page: 899-920   2010.10

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  30. A systematic rare-earth elements and yttrium study of Archean cherts at the Mount Goldsworthy greenstone belt in the Pilbara Craton: Implications for the origin of microfossil-bearing black cherts. Reviewed

    Sugahara H., Sugitani K., Mimura K., Yamashita F., Yamamoto K.

    Precambrian Research   Vol. 177   page: 73-87   2010

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  31. Three dimensional morphological and textural elaboration of Archean putative microfossils from the northeastern Pilbara Craton: Indications of biogenicity of large (>15µm) spheroidal and spindle-like structures. Reviewed

    Sugitani, K., Grey, K., Nagaoka, T., Mimura, K.

    Astrobiology   Vol. 9   page: 603-615   2009

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  32. *Taxonomy and biogenicity of Archaean spheroidal microfossils (c. 3.0 Ga) from the Mount Goldsworthy–Mount Grant area in the northeastern Pilbara Craton, Western Australia. Reviewed

    Sugitani, K., Grey, K., Nagaoka, T., Mimura, K., Walter, M.R.

    Precambrian Research   Vol. 173   page: 50-59   2009

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  33. Origin and deposition of organic matter in continental chert of the Middle Permian Gufeng Formation in the northern Yangtze platform. Reviewed

    Takebe M., Kametaka M., Takayanagi Y., Mimura K., Sugitani K. and Yamamoto K.

    Sedimentary Geology   Vol. 210   page: 141-148   2007

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  34. 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. B.   Vol. 259   page: 547-551   2007

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  35. 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 Geochemisty   Vol. 22   page: 306-319   2007

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

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

    Precambrian Res.   Vol. 148   page: 124-147   2007

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  37. *Selective release of D and 13C from insoluble organic matter of the Murchison meteorite by impact shock. Reviewed

    Mimura K., Okamoto M., Sugitani K., and Hashimoto S.

    Meteoritics and Planetary Science   Vol. 42   page: 347-355   2007

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  38. 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

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

    Precambrian Res.   Vol. 147   page: 124-147   2006

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  39. 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 Geochemisty   Vol. 21   page: 419-436   2006

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  40. *Shock-induced isotopic evolution of hydrogen and carbon in meteorites Reviewed

    Mimura K., Okamoto M., Nakatsuka T., Sugitani K., and Abe O.

    Geophys. Res. Lett.   Vol. 32   page: L11201   2005

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  41. Shock-induced dehydrogenation of polycyclic aromatic hydrocarbons with or without serpentine: implications for planetary accretion Reviewed

    Mimura K., Toyama S., and Sugitani K.

    Earth Planet. Sci. Lett.   Vol. 232   page: 143-156   2005

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  42. *Behavior of polycyclic aromatic hydrocarbons at impact shock: its implication for survival of organic materials delivered to the early Earth Reviewed

    Mimura K. and Toyama S.

    Geochim. Cosmochim. Acta   Vol. 69   page: 201-209   2005

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  43. Shock-induced pyrolysis of naphthalene and related polycyclic aromatic hydrocarbons (anthracene, pyrene, and fluoranthene) at pressures of 12-33.7 GPa Reviewed

    Mimura K., Madono T., Toyama S., Sugitani K., Sugisaki R., Iwamatsu S., and Murata S.

    J. Anal. Appl. Pyrolysis   Vol. 72   page: 273-278   2004

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  44. Stratigraphy and sedimentary petrology of an Archean volcanic-sedimentary succession at Mt. Goldsworthy in the Pilbara Block, Western Australia: implications of evaporite (nahcolite) and barite deposition. Reviewed

    Sugitani K., Mimura K., Suzuki K., Nagamine K., and Sugisaki R.

    Precambrian Res.   Vol. 120   page: 55-79   2003

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  45. 3He/4He ratios in well gases in the Kinki District, southwest Japan: surface appearance of slab-derived fluids in non-volcanic area in Kii Peninsula. Reviewed

    Matsumoto T., Kawabata T., Matsuda J., Yamamoto K., and Mimura K.

    Earth Planet. Sci. Lett.   Vol. 216   page: 221-230   2003

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  46. Shock-induced carbonization of phenanthrene at pressures of 7.9 to 32 GPa. Reviewed

    Mimura K., Arao T., Sugiura M., and Sugisaki R.

    Carbon   Vol. 41   page: 2547-2553   2003

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  47. Stratigraphy and sedimentary petrology of an Archean volcanic-sedimentary succession at Mt. Goldsworthy in the Pilbara Block, Western Australia: implications of evaporite (nahcolite) and barite deposition. Reviewed

    Sugitani K., Mimura K., Suzuki K., Nagamine K., and Sugisaki R.

    Precambrian Research   Vol. 120   page: 55-79   2003

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

  48. Latitudinal change of normal paraffin composition in the northwest Pacific sediments Reviewed

    Yamamoto K., Kurata Y., Takayanagi Y., Nishimura A., and Mimura K.

    Marine Geology   Vol. 196   page: 157-170   2003

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  49. マントル有機物に関する研究 Invited Reviewed

    三村耕一

    地球化学   Vol. 34   page: 225-241   2000

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  50. Depositional Environment of Sedimentary Rocks Inferred from Normal Fatty Acid Compositions(共著) Reviewed

    Murayama M., Yamamoto K., and Mimura K.

    Sedimentary Geology   Vol. 125   page: 61-68   1999

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  51. Delineation of Background Laboratory Contamination in the Analysis of Trace Concentrations of Extractable Organic Materials in Crystalline Rocks by Soxhlet Extraction, Chromatography, and Gas Chromatography Reviewed

    Mimura K. and Price L.C.

    Geological Survey Open-File Report   Vol. 99   page: 335   1999

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  52. Shock reaction of hexane at 77,193 and 273 K with special reference to shock pressures (共著) Reviewed

    Mimura K., Kato M., Ohashi M., and Sugisaki R.

    Shock Waves   Vol. 8   page: 311-319   1998

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  53. Redox change in sedimentary environments of Triassic bedded cherts, central Japan : possible reflection of sea level change (共著) Reviewed

    Sugitani K. and Mimura K.

    Geological Magazine   Vol. 135 ( 6 ) page: 735-753   1998

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  54. Normal paraffins in shales as an indicator of depositional environment (共著) Reviewed

    Yamamoto K., Okada T., Takayanagi Y., and Mimura K.

    Geochimica et cosmochimica Acta   Vol. 61 ( 20 ) page: 4403-4410   1997

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  55. Synthesis of Polycyclic Aromatic Hydrocarbons from Benzene by Impact Shock : Its Reaction Mechanism and Cosmochemical Significance Reviewed

    Sugisaki R. and Mimura K.

    Geochimica et Cosmochimica Acta   Vol. 59   page: 579-591   1995

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  56. Hydrocarbon Gases and Aromatic Hydrocarbons Produced by Impact Shock from Frozen Benzene : Cosmochemical Significance (共著) Reviewed

    Mimura K., Ohashi M., and Sugisaki R.

    Earth and Planetary Science Letters   Vol. 133   page: 265-269   1995

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  57. Mantle Hydrocarbons-Abiotic or Biotic? (共著) Reviewed

    Sugisaki R. and Mimura K.

    Geochimica et Cosmochimica Acta   Vol. 58   page: 2527-2542   1994

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  58. Shock Synthesis of Light Hydrocarbon Gases from H2 and CO : Its Role in Astrophysical Processes (共著) Reviewed

    Sugisaki R., Mimura K., and Kato M.

    Geophysical Research Letters   Vol. 21   page: 1031-1034   1994

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  59. Shock Synthesis of Polycyclic Aromatic Hydrocarbons from Benzene : Its Role in Astrophysical Processes (共著) Reviewed

    Mimura K., Kato M., Sugisaki R., and Handa N.

    Geophysical Research Letters   Vol. 21   page: 2071-2074   1994

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  60. Heavy Hydrocarbons Associated with Mantle Derived Rocks Reviewed

    Chikyukagaku(Geochemistry)   Vol. 27   page: 119-134   1993

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Books 4

  1. Farrel Quartzite Microfossils in Goldsworthy Greenstone Belt, Pilbara Craton, Western Australia Additional Evidence for a Diverse and Evolved Biota on the Archean Earth. in STROMATOLITES

    Sugitani K., Walter M., and Mimura K.( Role: Joint author)

    Springer Dordrecht Heidelberg London New York  2011 

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    Language:English

  2. Shock reactions of carbon bearing materials and their cosmochemical significance.

    High-Pressure Shock Compression of Solids (eds. Davison L., Horie Y., and Sekine T.), Springer, New York  2002 

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    Language:English

  3. 隕石に存在する有機物の生成過程を探る

    三村耕一( Role: Sole author)

    (株)化学同人『化学』  2007 

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    Language:Japanese

    隕石中に見られる有機物の種類と、その生成過程について紹介している。

  4. 地球化学講座 地球化学実験法

    ( Role: Joint author)

    培風館  2010.7 

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    Language:Japanese

Presentations 25

  1. Shock compression of organic matters. Invited International conference

    Mimura K. and Sugahara H.

    Deep Carbon Observatory Symposium in Yokohama 

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    Event date: 2016.6

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  2. Comet impacts as a driving force of glycine oligomerization. International conference

    Mimura K. and Sugahara H.

    nternational Astrobiology Workshop 2013 

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    Event date: 2013.11

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  3. 出発温度を変えた衝撃回収実験

    三村耕一

    超高速衝突研究会 

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    Event date: 2011

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Venue:神戸大学惑星科学研究センター   Country:Japan  

  4. 衝撃によるマーチソン隕石中の水素・炭素同位体比の変化

    三村耕一

    衝突研究会、北海道大学 

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    Event date: 2010.11

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  5. マントル中に存在する有機物

    三村耕一

    日本地質学会第117年学術大会、富山 

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    Event date: 2010.9

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  6. 広域変成作用に伴う岩石の元素組成の変化ー三波川帯泥質変岩を対象にして

    藤原早絵子、山本鋼志、三村耕一

    日本地球化学会年会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  7. ピルバラクラトン・マウントゴールズワージー地域に産出する含微化石チャートの年代とその意義

    杉谷健一郎、中川内司、三村耕一、日高洋

    日本地球化学会年会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  8. マーチソン隕石から得られた不溶性有機物の化学的構造

    三村耕一、奥村文章

    日本地球化学会年会 

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    Event date: 2009.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  9. 太古代(>3.0Ga)の微生物化石を含む黒色チャートの成因ー希土類元素からの考察

    菅原春菜,杉谷健一郎,山本鋼志,三村耕一

    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  

  10. Putative Archean Microfossils (>3.0 Ga) from the Mount Goldsworthy and Mount Grant Area in the Pilbara Craton, Western Australia: Taxonomic Reinterpretation and Implications for Ancient Biotic Diversity and Evolution. International conference

    World Summit On Ancient Microscopic Fossils 

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    Event date: 2008.7

    Language:English   Presentation type:Oral presentation (invited, special)  

  11. マーチソン隕石から得られた不溶性有機物の構造と水素・炭素同位体比の熱分解による検討

    奥村文章,三村耕一,阿部理,橋本重将

    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  

  12. Possible microfossils from the ~3.4 Ga Strelley Pool Chert, Pilbara Craton, Western Australia International conference

    International Palaeontological Congress (IPC2006) 

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    Event date: 2006.7

    Language:English   Presentation type:Oral presentation (invited, special)  

  13. Rare earth element geochemistry of carbonaceous black chert of 3.4 Ga Strelley Pool Chert at Mt. Goldsworthy and Mt. Grant, Pilbara Craton: Implications for environment of deposition and habitat of microbes on early Earth. International conference

    Goldschmidt Conference 

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    Event date: 2006

    Language:English   Presentation type:Oral presentation (general)  

  14. 衝撃による多環式芳香族炭化水素の反応とその地球科学的意義

    三村耕一,外山誠司

    第47回高圧討論会 

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    Event date: 2006

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  15. 隕石の衝撃脱ガスによる水素・炭素同位体比変化ーマーチソン隕石を用いてー

    岡本道意,三村耕一,杉谷健一郎,阿部 理,橋本重将

    日本地球化学会年会 

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    Event date: 2006

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  16. マーチソン隕石のマクロモレキュラーカーボンからの衝撃によるD,13Cの選択的放出

    三村耕一,岡本道意,杉谷健一郎,橋本重将,阿部 理

    日本地球化学会年会 

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    Event date: 2006

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  17. 衝撃によるマーチソン隕石からの水素の脱ガスと同位体比変化

    岡本道意,杉谷健一郎,阿部 理,橋本重将,三村耕一

    日本地球惑星科学連合2006年大会 

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    Event date: 2006

    Language:Japanese   Presentation type:Oral presentation (general)  

    Country:Japan  

  18. 衝撃によるマーチソン隕石の水素・炭素同位体比の進化

    日本地球化学会年会 

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    Event date: 2005

    Language:Japanese   Presentation type:Poster presentation  

    Country:Japan  

  19. 衝撃時における多環式芳香族炭化水素の挙動とその宇宙化学的応用

    三村耕一,外山誠司

    日本地球化学会年会 

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    Event date: 2004

    Language:Japanese   Presentation type:Poster presentation  

  20. Field evidence for abiotic syntheses of organic matter in hydrothermal conditions International conference

    the 12th Annual V.M. Goldschmidt Conference 

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    Event date: 2002

    Language:English   Presentation type:Poster presentation  

  21. Shock reaction of phenanthrene International conference

    the 12th Annual V.M. Goldschmidt Conference 

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    Event date: 2002

    Language:English   Presentation type:Oral presentation (invited, special)  

  22. マントル有機物の起源に関する研究

    三村耕一

    日本地球化学会 

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    Event date: 2000

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  23. Characteristics and implications of organic compounds in mantle-derived rocks International conference

    GSA annual meeting 

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    Event date: 1999

    Language:English   Presentation type:Oral presentation (invited, special)  

  24. Widespread evidence of the hydrolytic disproportionation of organic matter in geologic systems via aqueous-based redox reactions International conference

    GSA annual meeting 

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    Event date: 1999

    Language:English   Presentation type:Oral presentation (invited, special)  

  25. Hydrocarnbons and oxygenated-organic compounds in high-temperature crystalline and ore-deposit rocks as related to hydrolytic disproportionation International conference

    the Fifth International Symposium on Hydrothermal Reactions 

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    Event date: 1997

    Language:English   Presentation type:Oral presentation (invited, special)  

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KAKENHI (Grants-in-Aid for Scientific Research) 10

  1. Constrains on timings of cyanobacterial and eukaryotic evolutions based on innovative biomarker analyses

    Grant number:19H02013  2019.4 - 2023.3

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    Authorship:Coinvestigator(s)  Grant type:Competitive

  2. 高圧力が引き起こす有機物の重合反応:氷衛星・氷惑星内部は化学進化の場となるか?

    Grant number:18H03730  2018.4 - 2019.3

    鍵 裕之

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    Authorship:Coinvestigator(s)  Grant type:Competitive

    科研費が採択されて2018年6月までの約2ヶ月間で以下の研究を行った。
    採択後直ちに本研究を遂行する上で基盤となる分析装置であるLC-MS(液体クロマトグラフィー質量分析計)、紫外可視分光装置などを導入した。
    一般的には硫酸触媒を加えて加熱条件下でメチルアルコールと酢酸との間で進むエステル化反応が、無触媒、室温高圧下で大きく促進されることを見いだした。さらに出発物質に過剰な水を加えることにより、高圧下で氷VII相(高圧相)が析出し、反応が100%の収率で進行する現象を見いだした。同様にリン酸と酢酸との反応においても、高圧下で反応が促進すること、水が氷高圧相として晶出することでさらに反応が進行することが明らかになった。これらの研究では、本科研費によって導入されたLC-MSを用いて反応生成物の精密解析を行った。
    かねてより研究していたアミノ酸の高圧下における脱水縮合反応について、光学選択性について研究を進めた。まだ不明な点も多いが、高圧下で二量体から三量体が生成する過程で、明らかな光学選択性が見られた。
    以上の研究結果から、氷惑星・衛星内部に存在しうる氷の高圧相の周辺で、重要な有機化学反応が起こっている可能性を示すことができた。今後は反応速度の精密解析、反応過程におけ光学選択性などをより詳細に検討していく予定である。
    本科研費の支援は終了するが、本研究計画の分担者と協力しながら、今後も継続して高圧力下での有機化合物(特に生命の材料となりうるアミノ酸に着目する)の挙動について研究を進めていきたい。
    平成30年度が最終年度であるため、記入しない。
    平成30年度が最終年度であるため、記入しない。

  3. 高分子誘導体化法による隕石有機物全分析の試み

    Grant number:17K18803  2017.6 - 2021.3

    挑戦的研究(萌芽)

    西田 民人

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    Authorship:Coinvestigator(s)  Grant type:Competitive

    本研究は、隕石中に含まれる有機物のうち、溶媒により抽出可能な「可溶性有機物(Soluble Organic Matter, SOM)」ならびに溶媒に不溶な「不溶性有機物(Insoluble Organic Matter, IOM)」について有機分子種同定のための新たな方法を開発・提案する。具体的には、隕石中に含まれるSOM、IOMおよびIOMを加水分解して遊離する有機物をポリエチレンイミン(非脂質性ポリカチオン分子)と共有結合させ高分子誘導体として得たのち、核磁気共鳴法により、「隕石中に含まれるSOM、IOMおよびIOMを加水分解して遊離する有機物を高分子誘導体の官能基として捉え、その組成を明らかにする」ことで、隕石有機物を構成する分子種を明らかにする研究である。
    本年度は分析条件検討用試料を用いて、溶媒抽出操作により分画した1)可溶性有機物、その際に生じる残渣である2)不溶性溶性有機物、および不溶性有機物を酸およびアルカリ加水分解処理した後に溶媒抽出操作により分画した、3)溶媒抽出物の3画分を得た。モデル物質を用いて検討した高分子誘導体化反応至適条件をもとに岩石試料3画分に対し、高分子誘導体化を行った。得られた岩石有機物試料(液体および乾燥処理を行った試料)にポリエチレンイミン水溶液を添加し、反応させた。予備的実験の結果と比較し、分析条件検討が必要になったため、さらに岩石試料を用いて、反応効率を見極めて隕石試料に適した高分子誘導体化反応の条件を決定した。隕石から不溶性有機物の溶出操作において、鉄化合物並びにケイ酸塩への有機物の吸着が著しく、分析法の再考が必要とした。N-ベンゾイルフェニルヒドロキシルアミンにより無機塩を可溶化する方法を見いだした。
    隕石から不溶性有機物の溶出操作において、鉄化合物並びにケイ酸塩への有機物の吸着が著しく、分析法の再考が必要とした。N-ベンゾイルフェニルヒドロキシルアミンにより無機塩を可溶化する方法を見いだしたが、分析の中心的役割のHPLC質量分析計が故障したため代替の機器の手配及び修理に時間を要した。また隕石試料の至便(共同研究者からの提供)に困難が生じたため、実験着手が遅延した。
    令和2年6月から再開予定。
    隕石試料を新たに入手する目途もたち、機器の修理はコロナ禍により遅延しているが、7月初旬には分析可能となる予定である。

  4. 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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    Authorship:Coinvestigator(s)  Grant type:Competitive

    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.

  5. 氷衛星内部を想定した低温超高圧環境における有機物の化学進化

    2013.4 - 2017.3

    科学研究費補助金  基盤研究(B)

    三村耕一

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    Authorship:Principal investigator 

    地球外生命探査のターゲットになり得る氷衛星での有機物の化学進化において低温超高圧反応が果たす役割を検討する。

  6. 太古代大型微化石群からさぐる地球史初期の生物多様性と表層生態系

    2010.4 - 2014.3

    科学研究費補助金  基盤研究(B)

    杉谷健一郎

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    Authorship:Coinvestigator(s) 

  7. ストロマトライトと多様な微化石群からさぐる初期地球における表層生態系の成立と進化

    2010.4 - 2011.3

    科学研究費補助金 

    杉谷健一郎

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    Authorship:Coinvestigator(s) 

  8. 隕石衝突によって初期地球へ供給された有機物の化学進化についての実験的研究

    2009.4 - 2013.3

    科学研究費補助金  基盤研究(B)

    三村耕一

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    Authorship:Principal investigator 

    初期地球に落ちた隕石によって供給された有機物の化学組成とその量、さらに、初期地球の環境(高温で高濃度の二酸化炭素大気)で、どのような化学進化をしてきたのかを、実験的に明らかにする。

  9. ピルバラクラトンに産出する多様な大型化石群の起源と生命初期進化における意義

    2007.4 - 2010.3

    科学研究費補助金  基盤研究(B)

    杉谷健一郎

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    Authorship:Coinvestigator(s) 

  10. モデル星間分子を用いた衝撃反応とその宇宙化学的意義

    2001.4 - 2003.3

    科学研究費補助金  奨励研究(A)・

    三村耕一

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    Authorship:Principal investigator 

    星間分子中に存在すると考えられる有機物(ピレン、フェナントレン,フルオレン)に衝撃波を作用させ、その化学組成がどのように変化するかを調べた。

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Teaching Experience (On-campus) 3

  1. First Year Seminar A

    2021

  2. Organic Geochemistry

    2021

  3. Earth and Planetary Chemistry I

    2021

Teaching Experience (Off-campus) 1

  1. 宇宙における有機元素の進化

    2007.4 - 2008.3 Kyushu University)