2022/05/14 更新

写真a

ミチバヤシ カツヨシ
道林 克禎
MICHIBAYASHI Katsuyoshi
所属
大学院環境学研究科 地球環境科学専攻 地質・地球生物学 教授
大学院担当
大学院環境学研究科
学部担当
理学部 地球惑星科学科
職名
教授
連絡先
メールアドレス
外部リンク

学位 1

  1. Ph.D ( 1994年7月   James Cook University of North Queensland ) 

研究キーワード 2

  1. 断層・剪断帯

  2. 地球変動学(地球のレオロジー)

研究分野 3

  1. 自然科学一般 / 固体地球科学

  2. 自然科学一般 / 固体地球科学

  3. 自然科学一般 / 固体地球科学

経歴 16

  1. 国立研究開発法人海洋研究開発機構   海域地震火山部門   客員研究員

    2020年4月 - 現在

  2. 名古屋大学   大学院環境学研究科   教授

    2018年4月 - 現在

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    国名:日本国

  3. 静岡大学   研究フェロー

    2016年4月 - 2018年3月

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    国名:日本国

  4. 北海道大学   大学院地球惑星科学専攻   非常勤講師

    2015年9月

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    国名:日本国

  5. 海洋研究開発機構   海洋掘削科学研究開発センター   上席招聘研究員

    2015年4月 - 2016年3月

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    国名:日本国

  6. 富山大学   大学院理工学教育部理学領域地球科学専攻   非常勤講師

    2013年9月

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    国名:日本国

  7. 静岡大学   理学部地球科学科   教授

    2013年4月 - 2018年3月

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    国名:日本国

  8. 京都大学   理学部地質学鉱物学教室   非常勤講師

    2009年9月

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    国名:日本国

  9. 東北大学   大学院理学研究科   非常勤講師

    2009年9月

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    国名:日本国

  10. 静岡大学   理学部地球科学科   准教授

    2007年4月 - 2013年3月

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    国名:日本国

  11. 新潟大学   理学部地質科学科   非常勤講師

    2006年7月

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    国名:日本国

  12. 静岡大学   理学部地球科学科   助教授

    2002年4月 - 2007年3月

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    国名:日本国

  13. モンペリエ大学(フランス)   地球科学教室   日本学術振興会 海外特別研究員

    1997年8月

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    国名:フランス共和国

  14. 静岡大学   理学部地球科学科   助手

    1994年10月

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    国名:日本国

  15. 東京農工大学   非常勤講師

    1994年6月

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    国名:日本国

  16. 東京大学   理学部地質学教室   日本学術振興会 特別研究員(PD)

    1994年4月

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    国名:日本国

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学歴 3

  1. James Cook University of North Queensland   Graduate School, Division of Natural Science   Department of Geology

    1990年4月 - 1994年3月

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    国名: オーストラリア連邦

  2. 静岡大学   理学研究科   地球科学専攻

    1988年4月 - 1990年3月

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    国名: 日本国

  3. 静岡大学   理学部   地球科学科

    1984年4月 - 1988年3月

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    国名: 日本国

所属学協会 7

  1. 日本地球惑星科学連合   理事

    2014年5月 - 現在

  2. 日本地質学会   理事

    2018年5月 - 現在

  3. 日本鉱物科学会   会員

    2009年4月 - 現在

  4. アメリカ地球物理学連合   会員

    2004年4月 - 現在

  5. 日本地球惑星科学連合   会員

    2000年4月 - 現在

  6. 日本地質学会   会員

    1987年3月 - 現在

  7. 日本地質学会

▼全件表示

委員歴 3

  1. 日本地球惑星科学連合   副会長  

    2020年7月 - 現在   

  2. 中部地方整備局防災ドクター   防災ドクター  

    2014年4月 - 現在   

  3. 静岡県文化財保護審議会   委員  

    2010年1月 - 現在   

 

論文 241

  1. A database of plagioclase crystal preferred orientations (CPO) and microstructures - implications for CPO origin, strength, symmetry and seismic anisotropy in gabbroic rocks 査読有り 国際共著

    Satsukawa T., Ildefonse B., Mainprice D., Morales L. F. G., Michibayashi K., Barou F.

    SOLID EARTH   4 巻 ( 2 ) 頁: 511 - 542   2013年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Solid Earth  

    This study presents a unique database of 172 plagioclase Crystallographic Preferred Orientations (CPO) of variously deformed gabbroic rocks. The CPO characteristics as a function of the deformation regime (magmatic or crystal-plastic) are outlined and discussed. The studied samples are dominantly from slow-and fast-spread present-day ocean crust, as well as from the Oman ophiolite. Plagioclase is the dominant mineral phase in the studied samples. Plagioclase CPOs are grouped into three main categories: Axial-B, a strong point alignment of (010) with a girdle distribution of [100]; Axial-A, a strong point maximum concentration of [100] with parallel girdle distributions of (010) and (001); and P-type, point maxima of [100], (010), and (001). A majority of CPO patterns are Axial-B and P-type, in samples showing either magmatic or crystal-plastic deformation textures. Axial-A CPOs are less common; they represent 21% of the samples deformed by crystal-plastic flow. Although fabric strength (ODF J index) does not show any consistent variation as a function of the CPO patterns, there is a significant difference in the relationship between the ODF and pole figures J indices; the magmatic type microstructures have high (010) pole figures J indices, which increase linearly with ODF J index, whereas the high [100] pole figures J indices of plastically deformed samples vary in a more scattered manner with ODF J index. The multistage nature of plastic deformation superposed on a magmatic structure compared with magmatic flow, and the large number of possible slip-systems in plagioclase probably account for these differences. Calculated seismic properties (P wave and S wave velocities and anisotropies) of plagioclase aggregates show that anisotropy (up to 12% for P wave and 14% for S wave) tends to increase as a function of ODF J index. In comparison with the olivine 1998 CPO database, the magnitude of P wave anisotropy for a given J index is much less than olivine, whereas it is similar for S wave anisotropy. Despite a large variation of fabric patterns and geodynamic setting, seismic properties of plagioclase-rich rocks have similar magnitudes of anisotropy. There is a small difference in the aggregate elastic symmetry, with magmatic microstructures having higher orthorhombic and hexagonal components, whereas plastic deformation microstructures have a slightly higher monoclinic component, possibly correlated with predominant monoclinic simple shear flow in plastically deformed samples. Overall, plots for CPO strength (ODF J index), pole figure strength, CPO symmetry and seismic anisotropy show significant scattering. This could be related to sampling statistics, although our database is a factor of ten higher than the olivine database of 1998, or it could be related to the low symmetry (triclinic) structure of plagioclase resulting in the addition of degrees of freedom in the processes creating the CPOs. © 2013 Author(s).

    DOI: 10.5194/se-4-511-2013

    Web of Science

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  2. Structural geology of peridotite and rheology of the uppermost mantle 査読有り

    Michibayashi Katsuyoshi

    NIHON REOROJI GAKKAISHI   34 巻 ( 5 ) 頁: 291-300   2006年

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    担当区分:筆頭著者   記述言語:日本語   掲載種別:研究論文(学術雑誌)  

  3. Peridotites with back-arc basin affinity exposed at the southwestern tip of the Mariana forearc 査読有り

    Oya Shoma, Michibayashi Katsuyoshi, Ohara Yasuhiko, Martinez Fernando, Kourim Fatma, Lee Hao-Yang, Nimura Kohei

    PROGRESS IN EARTH AND PLANETARY SCIENCE   9 巻 ( 1 )   2022年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Progress in Earth and Planetary Science  

    Peridotites at water depths of 3430 to 5999 m have been discovered using the submersible Shinkai6500 (dives 6K-1397 and 6K-1398) on the southwestern slope of the 139°E Ridge (11°12′N, 139°15′E), a small ridge at the southwesternmost tip of the Mariana forearc near the junction with the Yap Trench and Parece Vela Basin. The peridotites studied consist of 17 residual harzburgites and one dunite and show various textures with respect to their depths. Peridotites with coarse-grained (> 1 mm) textures were sampled from the shallowest part (3705–4042 m) of the dive area, and peridotites with fine-grained (< 0.5 mm) textures were sampled deeper (5996 m). Olivine crystal-fabrics vary with grain size, with (010)[100] A-type patterns for the coarse-grained peridotites, {0kl}[100] D-type patterns for the fine-grained peridotites, and various indistinct patterns in samples of variable grain sizes. Fine-grained peridotites with D-type olivine crystal-fabrics could result from deformation under relatively higher flow stresses, suggesting that a ductile shear zone in the lithospheric mantle could occur in the deepest part of 139°E Ridge. Spinel Cr# range from relatively low (0.36) to moderately high (up to 0.57), and correlate with Ti contents (0.07–0.45 wt.%). The trace element patterns of clinopyroxene similarly exhibit steepening slopes from the middle to the light REEs regardless of textural variations. These mineralogical and geochemical features would result from melt-rock interactions under conditions of relatively shallow lithospheric mantle, which are much more comparable with the Parece Vela Basin peridotites than the Mariana forearc peridotites. Consequently, the Parece Vela Basin mantle is more likely exposed on the inner slope of the westernmost Mariana Trench, presumably due to the collision of the Caroline Ridge. [Figure not available: see fulltext.].

    DOI: 10.1186/s40645-022-00476-5

    Web of Science

    Scopus

  4. Cataclastic and crystal-plastic deformation in shallow mantle-wedge serpentinite controlled by cyclic changes in pore fluid pressures 査読有り 国際誌

    Hirauchi Ken-ichi, Nagata Yurina, Kataoka Kengo, Oyanagi Ryosuke, Okamoto Atsushi, Michibayashi Katsuyoshi

    EARTH AND PLANETARY SCIENCE LETTERS   576 巻   2021年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Episodic tremor and slip (ETS) events in the forearc mantle wedge of a warm subduction zone may reflect mixed brittle–ductile deformation of serpentinite in association with high pore fluid pressures. To understand deformation mechanisms and processes occurring in the hydrated mantle wedge, we examined in the Sanbagawa metamorphic belt, SW Japan, an antigorite serpentinite shear zone derived from mantle wedge that was formed under pressure and temperature conditions that correspond to the ETS regions. The serpentinite underwent multiple extensional (mode I) and extensional–shear (mode I–II) failure events at supralithostatic pore fluid pressures (Pf). Such failure events led to drops in Pf (several MPa) and formation of a distributed ‘fault–fracture mesh’. Antigorite precipitation in the fracture openings contributed to an increase in Pf until the failure condition was reached again, and thereby antigorite kinetics controlled the recurrence interval of seismic events. We also suggest that under the low-Pf conditions that facilitate intracrystalline plasticity rather than cataclasis, the newly precipitated antigorite aggregates (localized along shear bands) deform by dislocation creep at a high strain rate and high shear stress, resulting in the transient, accelerated viscous creep that may characterize slow slip transients.

    DOI: 10.1016/j.epsl.2021.117232

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  5. Geochemical characteristics of back-arc basin lower crust and upper mantle at final spreading stage of Shikoku Basin: an example of Mado Megamullion 査読有り

    Akizawa Norikatsu, Ohara Yasuhiko, Okino Kyoko, Ishizuka Osamu, Yamashita Hiroyuki, Machida Shiki, Sanfilippo Alessio, Basch Valentin, Snow Jonathan E., Sen Atlanta, Hirauchi Ken-ichi, Michibayashi Katsuyoshi, Harigane Yumiko, Fujii Masakazu, Asanuma Hisashi, Hirata Takafumi

    PROGRESS IN EARTH AND PLANETARY SCIENCE   8 巻 ( 1 )   2021年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Progress in Earth and Planetary Science  

    This paper explores the evolutional process of back-arc basin (BAB) magma system at final spreading stage of extinct BAB, Shikoku Basin (Philippine Sea) and assesses its tectonic evolution using a newly discovered oceanic core complex, the Mado Megamullion. Bulk and in-situ chemical compositions together with in-situ Pb isotope composition of dolerite, oxide gabbro, gabbro, olivine gabbro, dunite, and peridotite are presented. Compositional ranges and trends of the igneous and peridotitic rocks from the Mado Megamullion are similar to those from the slow- to ultraslow-spreading mid-ocean ridges (MOR). Since the timing of the Mado Megamullion exhumation corresponds to the very end of the Shikoku Basin opening, the magma supply was subdued and highly episodic, leading to extreme magma differentiation to form ferrobasaltic, hydrous magmas. In-situ Pb isotope composition of magmatic brown amphibole in the oxide gabbro is identical to that of depleted source mantle for mid-ocean ridge basalt (MORB). In the context of hydrous BAB magma genesis, the magmatic water was derived solely from the MORB source mantle. The distance from the back-arc spreading center to the arc front increased away through maturing of the Shikoku Basin to cause MORB-like magmatism. After the exhumation of Mado Megamullion along detachment faults, dolerite dikes intruded as a post-spreading magmatism. The final magmatism along with post-spreading Kinan Seamount Chain volcanism were introduced around the extinct back-arc spreading center after the opening of Shikoku Basin by residual mantle upwelling. [Figure not available: see fulltext.].

    DOI: 10.1186/s40645-021-00454-3

    Web of Science

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  6. Crack geometry of serpentinized peridotites inferred from onboard ultrasonic data from the Oman Drilling Project 査読有り 国際共著 国際誌

    Ikuo Katayama, Natsue Abe, Keishi Okazaki, Kohei Hatakeyama, Yuya Akamatsu, Katsuyoshi Michibayashi, Marguerite Godard, Peter Kelemen

    Tectonophysics   814 巻   頁: 228978 - 228978   2021年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Elsevier BV  

    DOI: 10.1016/j.tecto.2021.228978

  7. Temporal and spatial mineralogical changes in clasts from Mariana serpentinite mud volcanoes: Cooling of the hot forearc-mantle at subduction initiation 査読有り

    Yuji Ichiyama, Tatsuki Tsujimori, Patricia Fryer, Katsuyoshi Michibayashi, Akihiro Tamura, Tomoaki Morishita

    Lithos   384-385 巻   2021年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Mafic and ultramafic clasts (mostly ~1–5 cm in size) were recovered from three different serpentinite mud volcanos in the Mariana forearc during Integrated Ocean Drilling Program (IODP) Expedition 366. Mafic clasts from drill sites distant from the trench bear lawsonite, Al-rich riebeckite, jadeitic pyroxene (~80 mol% jadeite), and aragonite as metamorphic minerals. In contrast, mafic clasts from drill sites closer to the trench are characterized by prehnite–pumpellyite-facies mineral associations and/or the presence of analcime and natrolite. An occurrence of antigorite-bearing ultramafic clasts becomes progressively more frequent with distance from the trench. One amphibolite clast from a mud volcano near the trench also has prehnite filling veins, and it also occurs as pseudomorphs after plagioclase. Amphibolite clasts at other mud volcanoes distant from the trench are partially overprinted by blueschist-facies minerals. The apparent metamorphic grades increase with distance from the trench; these metamorphic conditions represent the increasing depth from zeolite- to lawsonite–blueschist-facies conditions in a subduction zone. Considering the consistency of the low-temperature metamorphic grade of mafic and ultramafic clast mineralogy in each mud volcano, they likely reflect the thermal structure of the slab-mantle interface before the ascent. As a result, these clasts were brought up to the seafloor en masse by the serpentinite mudflow. The polymetamorphosed amphibolite clasts suggest cooling of the hot forearc-mantle at the initiation of Mariana subduction in the Eocene. The ultramafic clasts in the mud volcanoes distant from the trench frequently contain Ca amphibole and talc, which indicates hot mantle hydration by metasomatic fluids released from the slab at subduction initiation.

    DOI: 10.1016/j.lithos.2020.105941

    Scopus

  8. Crucial Scientific Issues in Earth Science Revealed Only by Mantle Drilling: Understanding the Current State of the Oceanic Plates of a Life-bearing Planet 国際誌

    Morishita Tomoaki, Fujie Gou, Hirauchi Ken-ichi, Katayama Ikuo, Kouketsu Yui, Kuroda Jun-ichiro, Okamoto Atsushi, Ono Shigeaki, Michibayashi Katsuyoshi, Morono Yuki, Yamamoto Shinji

    JOURNAL OF GEOGRAPHY-CHIGAKU ZASSHI   130 巻 ( 4 ) 頁: 483 - 506   2021年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geography (Chigaku Zasshi)  

    In the 1950s, the aim of the original mantle drilling projects was to obtain oceanic mantle samples in order to address the unanswered question of what constitutes the Earth's mantle. However, in the 21st century, it is widely accepted that the uppermost mantle is mainly composed of peridotite. Now, the challenge of mantle drilling is to understand crucial unsolved issues of earth science. Today's Earth is different from other planets due to the existence of life and plate tectonics. It is emphasized that mantle drilling is the only way to obtain the oceanic crust from top to bottom and an active mantle sample from an oceanic plate. The crucial issues that can only be addressed by mantle drilling are: (1) limits of life in an oceanic plate and its controlling factors, and (2) formation process of an oceanic plate and its modification. Modification of an oceanic plate, especially the weakening of plate strength, is required for plate tectonics. These two issues are interrelated. Long seismic profiles of oceanic plates reveal the diversity of Moho seismic reflection regions: clear, unclear, diffuse and non-Moho regions. Faults and/or fracturing in oceanic plates and subsequent seawater flow can modify oceanic plates locally, probably causing the diversity of oceanic Moho, as well as the rheological behavior of oceanic plates. Fluid flows along faults/fractures also extend the biosphere of oceanic plates. The first drilling sample should be a reference to the oceanic crust and the uppermost mantle, and define the nature of the Moho at the site, as well as constrain reasons for the diversity of the Moho in other areas. Deep sampling, such as mantle drilling in an old oceanic plate, can penetrate the biosphere/non-biosphere boundary, which tells us about the controlling factors of the limit of life. This information may help us find extraterrestrial life. After mantle drilling is completed, the borehole is the only window from the ocean floor to the mantle. An in-situ mantle observatory in the mantle hole to monitor plate movement and fluid flow with biological activity within an oceanic plate is also suggested. Detecting geoneutrinos at the mantle site allows the amounts and distributions of radioactive elements from the Earth's mantle to be measured. These provide basic information on the Earth's heat sources and the evolutionary history of the mantle.

    DOI: 10.5026/jgeography.130.483

    Web of Science

    Scopus

    CiNii Research

  9. Orthopyroxene–magnetite symplectite in olivine gabbros from the lower crustal Oman Ophiolite: Oman Drilling Project, Hole GT2A 査読有り

    Sayantani CHATTERJEE, Debaditya BANDYOPADHYAY, Eiichi TAKAZAWA, Katsuyoshi MICHIBAYASHI

    Journal of Mineralogical and Petrological Sciences   116 巻 ( 3 ) 頁: 170 - 175   2021年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japan Association of Mineralogical Sciences  

    DOI: 10.2465/jmps.201130f

  10. On porosity determination for hard rock drilling using core samples collected by the Oman Drilling Project 査読有り

    Kumpei Nagase, Ikuo Katayama, Kohei Hatakeyama, Yuya Akamatsu, Keishi Okazaki, Natsue Abe, Katsuyoshi Michibayashi, Tadashi Yokoyama

    The Journal of the Geological Society of Japan   126 巻 ( 12 ) 頁: 713 - 717   2020年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:The Geological Society of Japan  

    DOI: 10.5575/geosoc.2020.0043

  11. Crustal Accretion in a Slow Spreading Back‐Arc Basin: Insights From the Mado Megamullion Oceanic Core Complex in the Shikoku Basin 査読有り

    V. Basch, A. Sanfilippo, C. Sani, Y. Ohara, J. Snow, O. Ishizuka, Y. Harigane, K. Michibayashi, A. Sen, N. Akizawa, K. Okino, M. Fujii, H. Yamashita

    Geochemistry, Geophysics, Geosystems   21 巻 ( 11 )   2020年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:American Geophysical Union (AGU)  

    DOI: 10.1029/2020gc009199

    その他リンク: https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2020GC009199

  12. Attenuated total reflection infrared (ATR-IR) spectroscopy of antigorite, chrysotile, and lizardite 査読有り 国際誌

    Ilona Sakaguchi, Yui Kouketsu, Katsuyoshi Michibayashi, Simon R. Wallis

    JOURNAL OF MINERALOGICAL AND PETROLOGICAL SCIENCES   115 巻 ( 4 ) 頁: 303 - 312   2020年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:JAPAN ASSOC MINERALOGICAL SCIENCES  

    Attenuated total reflection infrared (ATR-IR) spectroscopy allows measurements to be made directly from the surface of one-sided, diamond polished thin sections of geological samples. This method greatly reduces the sample preparation time when compared to other IR spectroscopy methods and opens the possibility of using infrared spectroscopy to study thin-section scale microstructures. ATR-IR spectroscopy of antigorite, chrysotile, and lizardite in samples from the Mt. Shiraga serpentinite body, central Shikoku, SW Japan, reveals clear spectral differences in the 650-1250 cm(-1) region associated with the vibration of the Si-O bonds in SiO4 tetrahedra and in the 3300-3750 cm(-1) region associated with the vibration of the O-H bond in MgO2(OH)(4) octahedra. A data-processing algorithm developed in this study allows the absorbance intensity and wavenumber of a particular absorbance peak to be used to create serpentine mineral phase maps based on the highest intensity Si-O absorbance bands for antigorite, chrysotile, and lizardite. Our methodology can be used to map serpentinite microstructures in thin sections illustrating the potential of ATR-IR as a relatively un-explored analytical tool in petrological studies. A combination of ATR-IR and electron microprobe data shows that for antigorite the wavenumber of the O-H absorbance band is correlated with the Fe content. Metamorphic reactions of serpentine minerals play a key role in the hydrodynamics of the earth's lithosphere, and the new information on serpentine mineral hydroxyl group behavior obtained by applying the technique outlined in this study are of great potential interest to researchers in a wide range of different fields.

    DOI: 10.2465/jmps.190807

    Web of Science

  13. Permeability Profiles Across the Crust‐Mantle Sections in the Oman Drilling Project Inferred From Dry and Wet Resistivity Data 査読有り

    Ikuo Katayama, Natsue Abe, Kohei Hatakeyama, Yuya Akamatsu, Keishi Okazaki, Ole Ivar Ulven, Gilbert Hong, Wenlu Zhu, Benoit Cordonnier, Katsuyoshi Michibayashi, Marguerite Godard, Peter Kelemen

    Journal of Geophysical Research: Solid Earth   125 巻 ( 8 )   2020年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:American Geophysical Union (AGU)  

    DOI: 10.1029/2019jb018698

    その他リンク: https://onlinelibrary.wiley.com/doi/full-xml/10.1029/2019JB018698

  14. Mariana serpentinite mud volcanism exhumes subducted seamount materials: implications for the origin of life. 査読有り

    Fryer P, Wheat CG, Williams T, Kelley C, Johnson K, Ryan J, Kurz W, Shervais J, Albers E, Bekins B, Debret B, Deng J, Dong Y, Eickenbusch P, Frery E, Ichiyama Y, Johnston R, Kevorkian R, Magalhaes V, Mantovanelli S, Menapace W, Menzies C, Michibayashi K, Moyer C, Mullane K, Park JW, Price R, Sissmann O, Suzuki S, Takai K, Walter B, Zhang R, Amon D, Glickson D, Pomponi S

    Philosophical transactions. Series A, Mathematical, physical, and engineering sciences   378 巻 ( 2165 ) 頁: 20180425   2020年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1098/rsta.2018.0425

    PubMed

  15. Super-resolution of X-ray CT images of rock core samples by sparse representation: methodology and applications to serpetinized peridotite from CM1A 査読有り

    Atsushi Okamoto, Toshiaki Omari, Masao Kimura, Katsuyoshi Michibayashi

    the International Conference on Ophiolites and the Oceanic Lithosphere     2020年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)  

  16. Workshop report on hard-rock drilling into mid-Cretaceous Pacific oceanic crust on the Hawaiian North Arch 査読有り

    Morishita, T, Umino, S, Kimura, J.-I, Yamashita, M, Ono, S, Michibayashi, K, Tominaga, M, Klein, F, Garcia, M.O

    Scientific Drilling   in press 巻   2020年

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    掲載種別:研究論文(学術雑誌)  

  17. Melt-fluid infiltration along detachment shear zones in oceanic core complexes: Insights from amphiboles in gabbro mylonites from the Godzilla Megamullion, Parece Vela Basin, the Philippine Sea 査読有り

    Harigane Yumiko, Okamoto Atsushi, Morishita Tomoaki, Snow Jonathan E., Tamura Akihiro, Yamashita Hiroyuki, Michibayashi Katsuyoshi, Ohara Yasuhiko, Arai Shoji

    LITHOS   344 巻   頁: 217 - 231   2019年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Lithos  

    Multiple generations of amphibole may form in the lower crust due to magmatism and metamorphism during the development of oceanic core complexes. We investigated the occurrence and chemical compositions of amphibole in gabbro mylonites from the medial area of the Godzilla Megamullion along the Parece Vela Rift in the Philippine Sea. The samples contain brown and green amphiboles with a variety of different textures that may have different origins. The brown amphibole occurs mainly as blebs in clinopyroxene porphyroclasts (Bleb amphibole), the rims around clinopyroxene porphyroclasts (Coronitic amphibole), and as porphyroclasts and fine-grained amphibole within the matrix (Matrix amphibole). The trace element and Cl contents of the bleb and green amphiboles indicate magmatic and metamoprhic origins, respectively. The bleb amphibole is interpreted to have crystallized from a hydrous silicate melt derived from an oxide gabbro-forming melt prior to retrograde metamorphism. In contrast, the compositions of the coronitic amphibole and matrix amphibole vary between those of typical magmatic and metamorphic amphiboles, suggesting that the amphibole-forming reactions were continuously retrogressive. Retrograde metamorphism is generally interpreted to have involved seawater-derived fluids, but the trace element contents of the coronitic and matrix amphiboles do not differ significantly from those of the original minerals (i.e., clinopyroxene and plagioclase). One sample of gabbro mylonite (KH07–02-D18–1) contains amphiboles with high concentrations of light rare earth elements, indicating a large influx of externally derived LREE-enriched fluids. These fluids are interpreted to have formed from an interaction between hydrous silicate melt with LREE-enriched composition and seawater-derived fluid. Our results suggest that multiple phases of melt–fluid infiltration occurred during the development of the detachment fault at the Godzilla Megamullion.

    DOI: 10.1016/j.lithos.2019.06.019

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    Scopus

  18. Trace element compositions of amphiboles in gabbro mylonites from the Godzilla Megamullion, Parece Vela Basin, Philippine Sea 査読有り

    Harigane Y, Okamoto A, Morishita T, Snow JE, Tamura A, Yamashita H, Michibayashi K, Ohara Y, Arai S

    Lithos   344 巻   頁: 217 - 231   2019年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  19. 四国中央部三波川変成帯白髪山地域のアンチゴライトに記録された変成履歴の検証 査読有り

    安藤 宏太, 纐纈 佑衣, 道林 克禎

    日本地質学会学術大会講演要旨   2019 巻 ( 0 ) 頁: 399 - 399   2019年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    <p></p>

    DOI: 10.14863/geosocabst.2019.0_399

  20. 静岡県西部三波川帯「渋川超苦鉄質岩体」の構造岩石学的特徴とその起源 査読有り

    塩谷 輝, 道林 克禎, 平内 健一, 纐纈 佑衣, 苗村 康輔

    日本地質学会学術大会講演要旨   2019 巻 ( 0 ) 頁: 98 - 98   2019年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    <p></p>

    DOI: 10.14863/geosocabst.2019.0_98

    CiNii Research

  21. Loop energy: A useful indicator of the hardness of minerals from depth sensing indentation tests 査読有り

    Masuda Toshiaki, Omori Yasutomo, Sakurai Ryoko, Miyake Tomoya, Yamanouchi Mirai, Harigane Yumiko, Okamoto Atsushi, Michibayashi Katsuyoshi

    JOURNAL OF STRUCTURAL GEOLOGY   117 巻   頁: 96 - 104   2018年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Structural Geology  

    Depth-sensing indentation tests were performed to obtain the loop energy (equivalent to the energy consumed to produce the indentation) and the residual depth of the indentation using a triangular pyramidal diamond indenter for the minerals in Mohs hardness scale except for diamond, as well as other minerals (apophyllite, forsterite, and tourmaline), at a maximum load ranging from 30 to 100 mN. A new graphic presentation is proposed that shows the hardness of minerals in log(penetration depth)−log(loop energy) space. The data for each mineral under different loads give a straight regression line with a slope of 2.6–2.9 (except for talc, which yields a slope of 2.2), while the data for different minerals under a given load yield a straight regression line with a slope of 1.1–1.2. A theoretical analysis of ideal materials, in terms of log(penetration depth)−log(loop energy) space, shows the existence of two series of parallel regression lines with slopes of 3 (data for each mineral at different loads) and 1 (data for different minerals under a given load). The results show a slight deviation between the measured and theoretical slopes, probably reflecting a progressive change in the mechanical properties of the minerals during the indentation tests.

    DOI: 10.1016/j.jsg.2018.09.004

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  22. Geodynamic implications of crustal lithologies from the southeast Mariana forearc 査読有り

    Reagan Mark K., Heywood Luan, Goff Kathleen, Michibayashi Katsuyoshi, Foster C. Thomas Jr., Jicha Brian, Lapen Thomas, McClelland William C., Ohara Yasuhiko, Righter Minako, Scott Sean, Sims Kenneth W. W.

    GEOSPHERE   14 巻 ( 1 ) 頁: 1 - 22   2018年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geosphere  

    The deep submergence research vehicle Shinkai 6500, diving on the Challenger segment of the Mariana forearc, encountered a superstructure of nascent arc crust atop a younger mantle with entrained fragments of metamorphosed crust. A plutonic block from this crust collected at 4900 m depth has a crystallization age of 46.1 Ma and mixed boninitic-arc tholeiitic geochemical signatures. A hornblende garnetite and two epidote amphibolites were retrieved from depths between 5938 m and 6277 m in an area dominated by peridotite. The garnetite appears to represent a crystal cumulate after melting of deep arc crust, whereas the amphibolites are compositionally similar to enriched mid-ocean ridge basalt (MORB). The initial isotopic compositions of these crustal fragments are akin to those of Eocene to Cretaceous terranes along the periphery of the Philippine plate. The garnetite achieved pressures of 1.2 GPa or higher and temperatures above 850 °C and thus could represent a fragment of the delaminated root of one of these terranes. This sample has coeval Sm-Nd, Lu-Hf, and 40Ar-39Ar ages indicating rapid ascent and cooling at 25 Ma, perhaps in association with rifting of the Kyushu-Palau arc. Peak P-T conditions were lower for the amphibolites, and their presence on the ocean floor near the garnetite might have resulted from mass wasting or normal faulting. The presence of relatively fusible crustal blocks in the circulating mantle could have contributed to the isotopic similarity of Mariana arc and backarc lavas with Indian Ocean MORB.

    DOI: 10.1130/GES01536.1

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  23. Poisson's Ratio and Auxetic Properties of Natural Rocks 査読有り

    Ji Shaocheng, Li Le, Motra Hem Bahadur, Wuttke Frank, Sun Shengsi, Michibayashi Katsuyoshi, Salisbury Matthew H.

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   123 巻 ( 2 ) 頁: 1161 - 1185   2018年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    Here we provide an appraisal of the Poisson's ratios (υ) for natural elements, common oxides, silicate minerals, and rocks with the purpose of searching for naturally auxetic materials. The Poisson's ratios of equivalently isotropic polycrystalline aggregates were calculated from dynamically measured elastic properties. Alpha-cristobalite is currently the only known naturally occurring mineral that has exclusively negative υ values at 20–1,500°C. Quartz and potentially berlinite (AlPO4) display auxetic behavior in the vicinity of their α-β structure transition. None of the crystalline igneous and metamorphic rocks (e.g., amphibolite, gabbro, granite, peridotite, and schist) display auxetic behavior at pressures of >5 MPa and room temperature. Our experimental measurements showed that quartz-rich sedimentary rocks (i.e., sandstone and siltstone) are most likely to be the only rocks with negative Poisson's ratios at low confining pressures (≤200 MPa) because their main constituent mineral, α-quartz, already has extremely low Poisson's ratio (υ = 0.08) and they contain microcracks, micropores, and secondary minerals. This finding may provide a new explanation for formation of dome-and-basin structures in quartz-rich sedimentary rocks in response to a horizontal compressional stress in the upper crust.

    DOI: 10.1002/2017JB014606

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    Scopus

  24. 丹沢深成岩体境界の変成マフィック岩のレオロジー研究に基づくデタッチメント断層型剪断帯の推定 査読有り

    道林 克禎, 水野 那希

    日本地質学会学術大会講演要旨   2018 巻 ( 0 ) 頁: 99   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2018.0_99

    CiNii Research

  25. トランスフォーム断層下の含水条件におけるマントル延性変形メカニズム 査読有り

    柿畑 優季, 道林 克禎, Dick Henry

    日本地質学会学術大会講演要旨   2018 巻 ( 0 ) 頁: 93   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2018.0_93

    CiNii Research

  26. 白鳳丸KH18-2航海速報:四国海盆のリソスフェアとアセノスフェアの組成 査読有り

    小原 泰彦, 山下 浩之, 研究者一同, 秋澤 紀克, 針金 由美子, 平野 直人, 平内 健一, 道林 克禎, 沖野 郷子, サンフィリッポ アレッシオ, スノー ジョナサン

    日本地質学会学術大会講演要旨   2018 巻 ( 0 ) 頁: 172   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    【災害のためプログラム中止】 平成30年北海道胆振東部地震により学術大会のプログラムが大幅に中止となりました.中止となったプログラムの講演要旨については,著者のプライオリティ保護の見地からJ-STAGEに公開し,引用可能とします.ただし,学術大会においては専門家による議論には供されていませんので「災害のためプログラム中止」との文言を付記します.(日本地質学会行事委員会)

    DOI: 10.14863/geosocabst.2018.0_172

    CiNii Research

  27. 顕微赤外分光測定におけるATR法を用いた鉱物中の水の検出可能性の検証 査読有り

    纐纈 佑衣, 柿畑 優季, 清水 健二, 道林 克禎, Wallis Simon

    日本鉱物科学会年会講演要旨集   2018 巻 ( 0 ) 頁: 21 - 21   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人日本鉱物科学会  

    地質学・鉱物学の研究分野において、赤外分光法は鉱物中の水を検出するのに有効な分析手法の一つであるが、試料準備に手間がかかるなどのデメリットがあった。本研究では、通常の岩石研磨薄片を用いた分析が可能なATR法 (全反射測定法:Attenuated Total Reflectance method)という新しい顕微赤外分光測定法を用いて、非含水鉱物中に含まれる微量な水の検出可能性について検証した。カンラン石やざくろ石中の数~数百ppmオーダーの水は検出されなかったが、水の含有量が未知のウルトラマイロナイト中のカンラン石ポーフィロクラストでは、3700 cm<sup>-1</sup>付近にOH基と考えられるシャープなピークが観察された。ppmオーダーの鉱物中の微量な水をATR法によって検出するには、分析における更なる工夫・改良が必要であるが、水の多い環境下で形成されたと考えられるカンラン石中のOHが検出できたことから、今後ATR法は有用な分析手法として発展することが期待される。

    DOI: 10.14824/jakoka.2018.0_21

    CiNii Research

  28. In situ carbon mineralization in ultramafic rocks: Natural processes and possible engineered methods 査読有り

    Kelemen P.B, Aines R, Bennett E, Benson S.M, Carter E, Coggon J.A, Obeso J.C, Evans O, Gadikota G, Dipple G.M, Godard M, Harris M, Higgins J.A, Johnson K.T.M, Kourim F, Michibayashi K, Morishita T, Takazawa E. ほ

    Energy Procedia   146 巻   頁: 92 - 102   2018年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    DOI: 10.1016/j.egypro.2018.07.013

  29. Mantle hydration along outer-rise faults inferred from serpentinite permeability 査読有り

    Hatakeyama Kohei, Katayama Ikuo, Hirauchi Ken-ichi, Michibayashi Katsuyoshi

    SCIENTIFIC REPORTS   7 巻 ( 1 ) 頁: 13870   2017年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Reports  

    Recent geophysical surveys indicate that hydration (serpentinization) of oceanic mantle is related to outer-rise faulting prior to subduction. The serpentinization of oceanic mantle influences the generation of intermediate-depth earthquakes and subduction water flux, thereby promoting arc volcanism. Since the chemical reactions that produce serpentinite are geologically rapid at low temperatures, the flux of water delivery to the reaction front appears to control the lateral extent of serpentinization. In this study, we measured the permeability of low-temperature serpentinites composed of lizardite and chrysotile, and calculated the lateral extent of serpentinization along an outer-rise fault based on Darcy's law. The experimental results indicate that serpentinization extends to a region several hundred meters wide in the direction normal to the outer-rise fault in the uppermost oceanic mantle. We calculated the global water flux carried by serpentinized oceanic mantle ranging from 1.7 × 1011 to 2.4 × 1012 kg/year, which is comparable or even higher than the water flux of hydrated oceanic crust.

    DOI: 10.1038/s41598-017-14309-9

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    PubMed

  30. 岩手県早池峰-宮守オフィオライトかんらん岩の構造岩石学的特徴

    長谷川 汰河, 道林 克禎, 小澤 一仁

    静岡大学地球科学研究報告   44 巻 ( 0 ) 頁: 31 - 46   2017年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:国立大学法人 静岡大学理学部地球科学教室  

    DOI: 10.51053/shizuoka.44.0_31

    CiNii Research

  31. Chemical interactions in the subduction factory: New insights from an in situ trace element and hydrogen study of the Ichinomegata and Oki-Dogo mantle xenoliths (Japan) 査読有り

    Satsukawa Takako, Godard Marguerite, Demouchy Sylvie, Michibayashi Katsuyoshi, Ildefonse Benoit

    GEOCHIMICA ET COSMOCHIMICA ACTA   208 巻   頁: 234 - 267   2017年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geochimica et Cosmochimica Acta  

    The uppermost mantle in back arc regions is the site of complex interactions between partial melting, melt percolation, and fluid migration. To constrain these interactions and evaluate their consequences on geochemical cycles, we carried out an in situ trace element and water study of a suite of spinel peridotite xenoliths from two regions of the Japan back arc system, Ichinomegata (NE Japan) and Oki-Dogo (SW Japan), using LA-ICPMS and FTIR spectrometry, respectively. This study provides the first full dataset of trace element and hydrogen compositions in peridotites including analyses of all their main constitutive silicate minerals: olivine, orthopyroxene and clinopyroxene. The Ichinomegata peridotites sample a LREE-depleted refractory mantle (Mg# olivine = 0.90; Cr# spinel = 0.07–0.23; Yb clinopyroxene = 7.8–13.3 × C1-chondrite, and La/Yb clinopyroxene = 0.003–0.086 × C1-chondrite), characterized by Th-U positive anomalies and constant values of Nb/Ta. The composition of the studied Ichinomegata samples is consistent with that of an oceanic mantle lithosphere affected by cryptic metasomatic interactions with hydrous/aqueous fluids (crypto-hydrous metasomatism). In contrast, the Oki-Dogo peridotites have low Mg# olivine (0.86–0.93) and a broad range of compositions with clinopyroxene showing “spoon-shaped” to flat, and LREE-enriched patterns. They are also characterized by their homogeneous compositions in the most incompatible LILE (e.g., Rb clinopyroxene = 0.01–0.05 × primitive mantle) and HFSE (e.g., Nb clinopyroxene = 0.01–2.16 × primitive mantle). This characteristic is interpreted as resulting from various degrees of melting and extensive melt-rock interactions. FTIR spectroscopy shows that olivine in both Ichinomegata and Oki-Dogo samples has low water contents ranging from 2 to 7 ppm wt. H2O. In contrast, the water contents of pyroxenes from Ichinomegata peridotites (113–271 ppm wt. H2O for orthopyroxene, and 292–347 ppm wt. H2O for clinopyroxene) are significantly higher than in Oki-Dogo peridotites (9–35 ppm wt. H2O for orthopyroxene, and 15–98 ppm wt. H2O for clinopyroxene). This indicates a relationship between melt-rock interaction and water concentrations in pyroxenes. Our study suggests that the water content of the Japan mantle wedge is controlled by the late melt/fluid/rock interactions evidenced by trace element geochemistry: a mechanism triggered by magma-rock interactions may have acted as an efficient dehydrating process in the Oki-Dogo region while the Ichinomegata mantle water content is controlled by slab-derived crypto-hydrous metasomatism.

    DOI: 10.1016/j.gca.2017.03.042

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  32. 浅部ウェッジマントルにおけるアンチゴライトCPO形成メカニズム~四国中央部三波川変成帯 別子・白髪山地域の例~

    永冶 方敬, ウォリス サイモン, 岡本 敦, 上原 誠一郎, 道林 克禎, 西井 彩

    日本地質学会学術大会講演要旨   2017 巻 ( 0 ) 頁: 336   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    【台風のためプログラム中止】台風18号により学術大会の一部プログラムが中止となりました.中止となったプログラムの講演要旨については,著者のプライオリティ保護の見地から今回に限りJ-STAGEに公開し,引用可能とします.ただし,学術大会においては専門家による議論には供されていませんので「台風のためプログラム中止」との文言を付記します.(日本地質学会行事委員会)

    DOI: 10.14863/geosocabst.2017.0_336

    CiNii Research

  33. Subduction initiation and ophiolite crust: new insights from IODP drilling 査読有り

    Reagan Mark K., Pearce Julian A., Petronotis Katerina, Almeev Renat R., Avery Aaron J., Carvallo Claire, Chapman Timothy, Christeson Gail L., Ferre Eric C., Godard Marguerite, Heaton Daniel E., Kirchenbaur Maria, Kurz Walter, Kutterolf Steffen, Li Hongyan, Li Yibing, Michibayashi Katsuyoshi, Morgan Sally, Nelson Wendy R., Prytulak Julie, Python Marie, Robertson Alastair H. F., Ryan Jeffrey G., Sager William W., Sakuyama Tetsuya, Shervais John W., Shimizu Kenji, Whattam Scott A.

    INTERNATIONAL GEOLOGY REVIEW   59 巻 ( 11 ) 頁: 1439 - 1450   2017年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:International Geology Review  

    International Ocean Discovery Program (IODP) Expedition 352 recovered a high-fidelity record of volcanism related to subduction initiation in the Bonin fore-arc. Two sites (U1440 and U1441) located in deep water nearer to the trench recovered basalts and related rocks; two sites (U1439 and U1442) located in shallower water further from the trench recovered boninites and related rocks. Drilling in both areas ended in dolerites inferred to be sheeted intrusive rocks. The basalts apparently erupted immediately after subduction initiation and have compositions similar to those of the most depleted basalts generated by rapid sea-floor spreading at mid-ocean ridges, with little or no slab input. Subsequent melting to generate boninites involved more depleted mantle and hotter and deeper subducted components as subduction progressed and volcanism migrated away from the trench. This volcanic sequence is akin to that recorded by many ophiolites, supporting a direct link between subduction initiation, fore-arc spreading, and ophiolite genesis.

    DOI: 10.1080/00206814.2016.1276482

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  34. 南西インド洋海嶺Prince Edwardトランスフォーム断層のウルトラマイロナイト 査読有り

    柿畑 優季, 道林 克禎, Dick Henry

    日本地質学会学術大会講演要旨   2017 巻 ( 0 ) 頁: 113   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    台風18号により学術大会の一部プログラムが中止となりましたが,本発表は特別セッション内で発表されました.

    DOI: 10.14863/geosocabst.2017.0_113

    CiNii Research

  35. 伊豆ー小笠原前弧域で掘削された前弧玄武岩・ボニナイトの岩石物性と化学組成 査読有り

    本多 睦美, 道林 克禎, 藤井 昌和, 山本 由弦, 針金 由美子

    日本地質学会学術大会講演要旨   2017 巻 ( 0 ) 頁: 160   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    台風18号により学術大会の一部プログラムが中止となりましたが,本発表は特別セッション内で発表されました.

    DOI: 10.14863/geosocabst.2017.0_160

    CiNii Research

  36. モホールへの道:ゴジラメガムリオン掘削提案 査読有り

    小原 泰彦, 道林 克禎, 小野 重明

    日本地質学会学術大会講演要旨   2017 巻 ( 0 ) 頁: 161   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    【台風のためプログラム中止】 台風18号により学術大会の一部プログラムが中止となりました.中止となったプログラムの講演要旨については,著者のプライオリティ保護の見地から今回に限りJ-STAGEに公開し,引用可能とします.ただし,学術大会においては専門家による議論には供されていませんので「台風のためプログラム中止」との文言を付記します.(日本地質学会行事委員会)

    DOI: 10.14863/geosocabst.2017.0_161

    CiNii Research

  37. 最上部マントルのファブリックと化学組成-陸と海のかんらん岩の類似性と相異性- 査読有り

    道林 克禎, 柿畑 優季, 大家 翔馬, 尾上 彩佳, 近藤 洋裕

    日本地質学会学術大会講演要旨   2017 巻 ( 0 ) 頁: 100   2017年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2017.0_100

    CiNii Research

  38. Physical properties and seismic structure of Izu-Bonin-Mariana fore-arc crust: Results from IODP Expedition 352 and comparison with oceanic crust 査読有り

    Christeson G. L., Morgan S., Kodaira S., Yamashita M., Almeev R. R., Michibayashi K., Sakuyama T., Ferre E. C., Kurz W.

    GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS   17 巻 ( 12 ) 頁: 4973 - 4991   2016年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geochemistry, Geophysics, Geosystems  

    Most of the well-preserved ophiolite complexes are believed to form in suprasubduction zone (SSZ) settings. We compare physical properties and seismic structure of SSZ crust at the Izu-Bonin-Mariana (IBM) fore arc with oceanic crust drilled at Holes 504B and 1256D to evaluate the similarities of SSZ and oceanic crust. Expedition 352 basement consists of fore-arc basalt (FAB) and boninite lavas and dikes. P-wave sonic log velocities are substantially lower for the IBM fore arc (mean values 3.1–3.4 km/s) compared to Holes 504B and 1256D (mean values 5.0–5.2 km/s) at depths of 0–300 m below the sediment-basement interface. For similar porosities, lower P-wave sonic log velocities are observed at the IBM fore arc than at Holes 504B and 1256D. We use a theoretical asperity compression model to calculate the fractional area of asperity contact Af across cracks. Af values are 0.021–0.025 at the IBM fore arc and 0.074–0.080 at Holes 504B and 1256D for similar depth intervals (0–300 m within basement). The Af values indicate more open (but not necessarily wider) cracks in the IBM fore arc than for the oceanic crust at Holes 504B and 1256D, which is consistent with observations of fracturing and alteration at the Expedition 352 sites. Seismic refraction data constrain a crustal thickness of 10–15 km along the IBM fore arc. Implications and inferences are that crust-composing ophiolites formed at SSZ settings could be thick and modified after accretion, and these processes should be considered when using ophiolites as an analog for oceanic crust.

    DOI: 10.1002/2016GC006638

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  39. High-flux plasma exposure of ultra-fine grain tungsten 査読有り

    Kolasinski R. D., Buchenauer D. A., Doerner R. P., Fang Z. Z., Ren C., Oya Y., Michibayashi K., Friddle R. W., Mills B. E.

    INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS   60 巻   頁: 28 - 36   2016年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:International Journal of Refractory Metals and Hard Materials  

    In this work, we examine the response of an ultra-fine grained (UFG) tungsten material to high-flux deuterium plasma exposure. UFG tungsten has received considerable interest as a possible plasma-facing material in magnetic confinement fusion devices, in large part because of its improved resistance to neutron damage. However, optimization of the material in this manner may lead to trade-offs in other properties. We address two aspects of the problem in this work: (a) how high-flux plasmas modify the structure of the exposed surface, and (b) how hydrogen isotopes become trapped within the material. The specific UFG tungsten considered here contains 100 nm-width Ti dispersoids (1 wt%) that limit the growth of the W grains to a median size of 960 nm. Metal impurities (Fe, Cr) as well as O were identified within the dispersoids; these species were absent from the W matrix. To simulate relevant particle bombardment conditions, we exposed specimens of the W-Ti material to low energy (100 eV), high-flux (> 1022 m− 2 s− 1) deuterium plasmas in the PISCES-A facility at the University of California, San Diego. To explore different temperature-dependent trapping mechanisms, we considered a range of exposure temperatures between 200 °C and 500 °C. For comparison, we also exposed reference specimens of conventional powder metallurgy warm-rolled and ITER-grade tungsten at 300 °C. Post-mortem focused ion beam profiling and atomic force microscopy of the UFG tungsten revealed no evidence of near-surface bubbles containing high pressure D2 gas, a common surface degradation mechanism associated with plasma exposure. Thermal desorption spectrometry indicated moderately higher trapping of D in the material compared with the reference specimens, though still within the spread of values for different tungsten grades found in the literature database. For the criteria considered here, these results do not indicate any significant obstacles to the potential use of UFG tungsten as a plasma-facing material, although further experimental work is needed to assess material response to transient events and high plasma fluence.

    DOI: 10.1016/j.ijrmhm.2016.05.006

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  40. 静岡県のGEO DATA(15) : 地学散歩(94) 査読有り

    道林 克禎

    静岡地学   114 巻 ( 114 ) 頁: . - i   2016年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024538

  41. S-wave velocities and anisotropy of typical rocks from Yunkai metamorphic complex and constraints on the composition of the crust beneath Southern China 査読有り

    Ji Shaocheng, Wang Qian, Shao Tongbin, Endo Hiroto, Michibayashi Katsuyoshi, Salisbury Matthew H.

    TECTONOPHYSICS   686 巻   頁: 27 - 50   2016年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    In order to constrain the interpretation of seismic data from receiver functions and deep profiles of the crust beneath southern China (Cathaysia and Yangtze blocks), we have measured S-wave velocities (Vs) and splitting as a function of hydrostatic confining pressure up to 650 MPa for 22 representative samples (i.e., granite, diorite, felsic gneiss and mylonite, amphibolite, schist, and marble) from the Yunkai metamorphic complex (China) that represent the crystalline basement beneath the region. The experimental data were combined with electron backscattering diffraction (EBSD) analysis of rock-forming minerals to constrain variations of Vp/Vs ratios and understand the origin of seismic anisotropy. The crusts beneath the Yangtze and Cathaysia blocks have different average thicknesses (H = 35.4 ± 6.3 km and 29.8 ± 1.8 km, respectively) but display almost the same Vp/Vs values (1.73 ± 0.08 and 1.74 ± 0.04, respectively). These ratios correspond to an average of bimodally distributed granitic and gabbroic lithologies which are dominant, respectively, in the upper and lower crusts, instead a homogeneous andesitic composition of the overall crust. Positive and negative correlations between H and Vp/Vs occur in west and east parts of southern China, respectively. The negative correlation indicates basaltic underplating from a partially molten mantle wedge above the subducting Pacific plate into the southern China crust, whereas the positive correlation implies that much larger thinning strain has taken place in the high temperature mafic lower crust (high temperature) than in the low temperature felsic upper crust during Mesozoic-Cenozoic tectonic extension.

    DOI: 10.1016/j.tecto.2016.07.017

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  42. Natural olivine crystal-fabrics in the western Pacific convergence region: A new method to identify fabric type 査読有り

    Michibayashi Katsuyoshi, Mainprice David, Fujii Ayano, Uehara Shigeki, Shinkai Yuri, Kondo Yusuke, Ohara Yasuhiko, Ishii Teruaki, Fryer Patricia, Bloomer Sherman H., Ishiwatari Akira, Hawkins James W., Ji Shaocheng

    EARTH AND PLANETARY SCIENCE LETTERS   443 巻   頁: 70 - 80   2016年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Crystallographic preferred orientations (CPOs) of olivine within natural peridotites are commonly depicted by pole figures for the [100], [010], and [001] axes, and they can be categorized into five well-known fabric types: A, B, C, D, and E. These fabric types can be related to olivine slip systems: A with (010)[100], B with (010)[001], C with (001)[001], D with {0kl}[100], and E with (001)[100]. In addition, an AG type is commonly found in nature, but its origin is controversial, and could involve several contributing factors such as complex slip systems, non-coaxial strain types, or the effects of melt during plastic flow. In this paper we present all of our olivine fabric database published previously as well as new data mostly from ocean floor, mainly for the convergent margin of the western Pacific region, and we introduce a new index named Fabric-Index Angle (FIA), which is related to the P-wave property of a single olivine crystal. The FIA can be used as an alternative to classifying the CPOs into the six fabric types, and it allows a set of CPOs to be expressed as a single angle in a range between -90° and 180°. The six olivine fabric types have unique values of FIA: 63° for A type, -28° for B type, 158° for C type, 90° for D type, 106° for E type, and 0° for AG type. We divided our olivine database into five tectonic groups: ophiolites, ridge peridotites, trench peridotites, peridotite xenoliths, and peridotites enclosed in high-pressure metamorphic rocks. Our results show that although our database is not yet large enough (except for trench peridotites) to define the characteristics of the five tectonic groups, the natural olivine fabrics vary in their range of FIA: 0° to 150° for the ophiolites, 40° to 80° for the ridge peridotites, -40° to 100° for the trench peridotites, 0° to 100° for the peridotite xenoliths, and -40° to 10° for the peridotites enclosed in high-pressure metamorphic rocks. The trench peridotites show a statistically unimodal distribution of FIA consisting of the high peak equivalent of the A type, but with some FIAs close to the AG and D types. The variations in the olivine fabrics in the trench peridotites could result from variations in deformation within the supra-subduction uppermost mantle, possibly related to evolution of the mantle since the subduction initiation of the Pacific plate.

    DOI: 10.1016/j.epsl.2016.03.019

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  43. Melt-rock interactions and fabric development of peridotites from North Pond in the Kane area, Mid-Atlantic Ridge: Implications of microstructural and petrological analyses of peridotite samples from IODP Hole U1382A 査読有り

    Harigane Yumiko, Abe Natsue, Michibayashi Katsuyoshi, Kimura Jun-Ichi, Chang Qing

    GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS   17 巻 ( 6 ) 頁: 2298 - 2322   2016年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geochemistry, Geophysics, Geosystems  

    North Pond is an isolated sedimentary pond on the western flank of the Kane area along the Mid-Atlantic Ridge. Drill-hole U1382A of IODP Expedition 336 recovered peridotite and gabbro samples from a sedimentary breccia layer in the pond, from which we collected six fresh peridotite samples. The peridotite samples came from the southern slope of the North Pond where an oceanic core complex is currently exposed. The samples were classified as spinel harzburgite, plagioclase-bearing harzburgite, and a vein-bearing peridotite that contains tiny gabbroic veins. No obvious macroscopic shear deformation related to the formation of a detachment fault was observed. The spinel harzburgite with a protogranular texture was classified as refractory peridotite. The degree of partial melting of the spinel harzburgite is estimated to be ∼17%, and melt depletion would have occurred at high temperatures in the uppermost mantle beneath the spreading axis. The progressive melt–rock interactions between the depleted spinel harzburgite and the percolating melts of Normal-Mid Ocean Ridge Basalt (N-MORB) produced the plagioclase-bearing harzburgite and the vein-bearing peridotite at relatively low temperatures. This implies that the subsequent refertilization occurred in an extinct spreading segment of the North Pond after spreading at the axis. Olivine fabrics in the spinel and plagioclase-bearing harzburgites are of types AG, A, and D, suggesting the remnants of a mantle flow regime beneath the spreading axis. The initial olivine fabrics appear to have been preserved despite the later melt–rock interactions. The peridotite samples noted above preserve evidence of mantle flow and melt–rock interactions beneath a spreading ridge that formed at ∼8 Ma.

    DOI: 10.1002/2016GC006429

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  44. 静岡県のGEO DATA(14) : 地学散歩(93) 査読有り

    道林 克禎

    静岡地学   113 巻 ( 113 ) 頁: . - i   2016年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024556

  45. Mica-dominated seismic properties of mid-crust beneath west Yunnan (China) and geodynamic implications 査読有り

    Shao Tongbin, Ji Shaocheng, Oya Shoma, Michibayashi Katsuyoshi, Wang Qian

    TECTONOPHYSICS   677 巻   頁: 324 - 338   2016年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    Measurements of crystallographic preferred orientations (CPO) and calculations of P- and S-wave velocities (Vp and Vs) and anisotropy were conducted on three quartz–mica schists and one felsic mylonite, which are representative of typical metamorphic rocks deformed in the middle crust beneath the southeastern Tibetan plateau. Results show that the schists have Vp anisotropy (AVp) ranging from 16.4% to 25.5% and maximum Vs anisotropy [AVs(max)] between 21.6% and 37.8%. The mylonite has lower AVp and AVs(max) but slightly higher foliation anisotropy, which are 13.2%, 18.5%, and 3.07%, respectively, due to the lower content and CPO strength of mica. With increasing mica content, the deformed rocks tend to form transverse isotropy (TI) with fast velocities in the foliation plane and slow velocities normal to the foliation. However, the presence of prismatic minerals (e.g., amphibole and sillimanite) forces the overall symmetry to deviate from TI. An increase in feldspar content reduces the bulk anisotropy caused by mica or quartz because the fast-axis of feldspar aligns parallel to the slow-axis of mica and/or quartz. The effect of quartz on seismic properties of mica-bearing rocks is complex, depending on its content and prevailing slip system. The greatest shear-wave splitting and fastest Vp both occur for propagation directions within the foliation plane, consistent with the fast Pms (S-wave converted from P-wave at the Moho) polarization directions in the west Yunnan where mica/amphibole-bearing rocks have developed pervasive subvertical foliation and subhorizontal lineation. The fast Pms directions are perpendicular to the approximately E-W orienting fast SKS (S-wave traversing the core as P-wave) directions, indicating a decoupling at the Moho interface between the crust and mantle beneath the region. The seismic data are inconsistent with the model of crustal channel flow as the latter should produce a subhorizontal foliation where vertically incident shear waves suffer little splitting.

    DOI: 10.1016/j.tecto.2016.04.024

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  46. Temperature dependence of [100](010) and [001](010) dislocation mobility in natural olivine 査読有り

    Wang Lin, Blaha Stephan, Pinter Zsanett, Farla Robert, Kawazoe Takaaki, Miyajima Nobuyoshi, Michibayashi Katsuyoshi, Katsura Tomoo

    EARTH AND PLANETARY SCIENCE LETTERS   441 巻   頁: 81 - 90   2016年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Dislocation recovery experiments were conducted on pre-deformed olivine single crystals at 1450 to 1760 K, room pressure, and oxygen partial pressures near the Ni–NiO buffer to determine the annihilation rates for [100] and [001] dislocations on the (010) plane. Olivine single crystals were first deformed to activate the desired slip systems under simple shear geometry and then annealed at target conditions. The edge and screw dislocations with Burgers vectors, b, of [100] and [001], respectively, both elongated in the [001] direction were produced by the deformation. The dislocation annihilation rate constants of both types of dislocations are identical within 0.3 log unit. The activation energies for both dislocations are also identical, i.e., ∼400 kJ/mol, which is also identical to that of the Si self-diffusion coefficient. This correspondence suggests that olivine dislocation creep controlled by a diffusion-controlled process under low-stress and high-temperature conditions. This study offers a potential insight into the formation of AG-type fabric in olivine.

    DOI: 10.1016/j.epsl.2016.02.029

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  47. Effects of olivine fabric, melt-rock reaction, and hydration on the seismic properties of peridotites: Insight from the Luobusha ophiolite in the Tibetan Plateau 査読有り

    Sun Shengsi, Ji Shaocheng, Michibayashi Katsuyoshi, Salisbury Matthew

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   121 巻 ( 5 ) 頁: 3300 - 3323   2016年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    In order to constrain the effects of olivine fabric, melt-rock reaction, and hydration on the seismic properties and anisotropy of mantle rocks, we investigated serpentinized peridotites from the Luobusha ophiolite in the Indus-Tsangpo suture of the Tibetan Plateau. A-type and almost random olivine crystal-preferred orientations (CPO) occur in harzburgite and dunite samples, respectively. The dunite resulted from interactions of harzburgite with boninitic melt at ~800–970°C, yielding pyroxene dissolution and olivine precipitation. The olivine neoblasts formed from the melt-rock reaction show no evidence of dislocation creep and developed almost random CPO. Hence, the melt-rock reaction reduced seismic anisotropy. Our results together with those from the literature indicate that A-, B-, C-, D-, and E-type CPOs of olivine generally induce Vp anisotropy patterns with Vp(X) > Vp(Y) > Vp(Z), Vp(Y) > Vp(X) > Vp(Z), Vp(Z) > Vp(X) > Vp(Y), Vp(X) > Vp(Y) ≈ Vp(Z), and Vp(X) > Vp(Z) > Vp(Y), respectively. The effect of serpentinization was calibrated by the comparison of seismic velocities and anisotropy measured up to 600 MPa with the values calculated from the CPO data. Although the low-temperature (LT, <300°C) serpentinization (lizardite and chrysotile) decreases Vp by ~6–10% and Vs by ~12%, it does not change the anisotropy pattern because the mesh-texture characterized by serpentine veins perpendicular to the principal structural directions (X, Y, and Z) reduces the velocities in these orthogonal directions to almost equal extent. Thus, the magnitude of seismic anisotropy alone cannot be used as an indicator of the degree of LT serpentinization in the mantle rocks. Furthermore, Birch's law is found to hold when peridotites undergo serpentinization.

    DOI: 10.1002/2015JB012579

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  48. The effect of a hydrous phase on P-wave velocity anisotropy within a detachment shear zone in the slow-spreading oceanic crust: A case study from the Godzilla Megamullion, Philippine Sea 査読有り

    Michibayashi Katsuyoshi, Watanabe Tohru, Harigane Yumiko, Ohara Yasuhiko

    ISLAND ARC   25 巻 ( 3 ) 頁: 209 - 219   2016年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Island Arc  

    We studied the contributions of plagioclase, clinopyroxene, and amphibole to the P-wave velocity properties of gabbroic mylonites of the Godzilla Megamullion (site KH07-02-D18) in the Parece Vela Rift of the central Parece Vela Basin, Philippine Sea, based on their crystal-preferred orientations (CPOs), mineral modes, and elastic constants and densities of single crystals. The gabbroic mylonites have been classified into three types based on their microstructures and temperature conditions: HT1, HT2 and medium-temperature (MT) mylonites. The P-wave velocity properties of the HT1 mylonite are dominantly influenced by plagioclase CPOs. Secondary amphibole occurred after deformation in the HT1 mylonite, so that its effect on P-wave velocity anisotropy is minimal due to weak CPOs. Although the HT2 mylonite developed deformation microstructures in the three minerals, the P-wave velocity properties of the HT2 mylonite are essentially isotropic, resulting from the destructive interference of different P-wave velocity anisotropy patterns produced by the distinct CPOs of the three constituent minerals (i.e., plagioclase, clinopyroxene, and amphibole). The P-wave velocity properties of the MT mylonite are influenced mainly by amphibole CPOs, whereas the effect of plagioclase CPOs on P-wave velocity anisotropy becomes very small with a decrease in the intensity of plagioclase CPOs. As a result, the gabbroic mylonites tend to have weak P-wave velocity anisotropy in seismic velocity, although their constituent minerals show distinct CPOs. Such weakness in the whole-rock P-wave velocity anisotropy could result from the destructive contributions of the different mineral CPOs with respect to the structural framework (foliation and lineation). These results show that amphibole has a high potential for P-wave velocity anisotropy by aligning both crystallographically and dimensionally during deformation in the hydrous oceanic crust. The results also suggest that the effect of a hydrous phase on P-wave velocity anisotropy within the detachment shear zone in a slow-spreading oceanic crust varies depending on the degree of deformation and on the timing of hydrothermal activity.

    DOI: 10.1111/iar.12132

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  49. Virtual special issue: Understanding of the largest oceanic core complex on the Earth, Godzilla Megamullion Preface 査読有り

    Michibayashi Katsuyoshi, Snow Jonathan E.

    ISLAND ARC   25 巻 ( 3 ) 頁: 192 - 192   2016年5月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Island Arc  

    DOI: 10.1111/iar.12157

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  50. Three-dimensional Evolution of Melting, Heat and Melt Transfer in Ascending Mantle beneath a Fast-spreading Ridge Segment Constrained by Trace Elements in Clinopyroxene from Concordant Dunites and Host Harzburgites of the Oman Ophiolite 査読有り

    Akizawa Norikatsu, Ozawa Kazuhito, Tamura Akihiro, Michibayashi Katsuyoshi, Arai Shoji

    JOURNAL OF PETROLOGY   57 巻 ( 4 ) 頁: 777 - 814   2016年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Petrology  

    Dunite bands and dikes in ophiolitic mantle peridotites are interpreted as fossil melt channels within the suboceanic mantle. Concordant dunite bands (i.e. fossil melt channels transposed by outward transportation from the ridge axis via horizontal mantle flow) are particularly important as they possibly represent the melt channels through which the parental melts of mid-ocean ridge basalt (MORB) were transported to shallower depths beneath the paleo-ridge axis. We conducted field observations and sampling of concordant dunite bands (CDB) and their host harzburgite at selected outcrops covering a wide depth range in the mantle section along an inferred paleo-ridge segment in the northern to central part of the Oman ophiolite. The CDB increase in thickness and decrease in frequency upward. They are thicker and more frequent in the centre of the segment than near the segment ends when compared at the same stratigraphic level. The CDB consist mostly of olivine with minor spinel and very rare amounts of pyroxene. Clinopyroxene has a small grain size and an interstitial position relative to olivine. The constituent minerals in the CDB and their host harzburgite were analyzed by electron microprobe for major elements and by laser ablation inductively coupled plasma mass spectrometry for trace elements. Most of the CDB have refractory major element mineral compositions, such as high Fo [100 � Mg/(Mg + Fe)] in olivine (>90�5), high Cr# [Cr/(Cr + Al)] in chromian spinel (>0�50), and low Al2O3 (<3�5 wt %) in clinopyroxene. Chondrite-normalized trace element patterns of clinopyroxene in the host harzburgites consistently show a gentle decrease from heavy REE (HREE) to middle REE (MREE) and a sharp decrease from MREE to light REE (LREE) (= highly depleted), but those in the CDB show weaker LREE depletion, which is more variable depending on the stratigraphic level and position along the paleo-ridge segment. In contrast, the HREE concentrations in clinopyroxene in the CDB are higher than or similar to those of the host harzburgites. Trace element compositions of clinopyroxene in the CDB and their host harzburgites are evaluated with a one-dimensional, steady-state, open-system decompressional melting-reaction model. The modeling results suggest that an LREE-enriched melt generated at high pressure was transported upwards through melt channels to the shallow mantle (up to the Moho transition zone), where it mingled with highly depleted melts accumulated from fractionally melted peridotites to generate normal (N)-MORB-like melts. The mantle started upwelling (= melting) in the garnet stability field in the segment centre, but either in the garnet or in the spinel stability field near the segment ends. This suggests a variation of geothermal gradient along the paleo-ridge segment: higher in the segment centre and lower near the segment ends. This inference is supported by the presence of thicker (up to 250 cm) CDB as well as more frequent occurrence of CDB in the segment centre than near the segment end and by the geochemical evidence for chromatographic N-MORB-like melt percolation into the host peridotite only in the uppermost horizons near the segment ends.

    DOI: 10.1093/petrology/egw020

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  51. IODP Expedition 352で採取された前弧玄武岩・ボニナイトの岩石物性研究 査読有り

    本多 睦美, 道林 克禎, 山本 由弦, 針金 由美子, 神谷 奈々, 渡邊 了, 藤井 昌和, 柵山 徹也

    日本地質学会学術大会講演要旨   2016 巻 ( 0 ) 頁: 449   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2016.0_449

    CiNii Research

  52. 丹沢深成岩体に接する角閃岩の変形微細構造と結晶方位ファブリック 査読有り

    水野 那希, 道林 克禎

    日本地質学会学術大会講演要旨   2016 巻 ( 0 ) 頁: 139   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2016.0_139

    CiNii Research

  53. 南部マリアナ海溝陸側斜面で採取された海溝カンラン岩の地質学的研究 査読有り

    大家 翔馬, 上原 茂樹, 道林 克禎, 小原 泰彦, 石井 輝秋

    日本地質学会学術大会講演要旨   2016 巻 ( 0 ) 頁: 138   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2016.0_138

    CiNii Research

  54. 静岡県佐久間町中央構造線沿いに分布する断層岩の延性脆性組織と結晶方位解析 査読有り

    遠藤 弘人, 道林 克禎, Mainprice David

    日本地質学会学術大会講演要旨   2016 巻 ( 0 ) 頁: 233   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2016.0_233

    CiNii Research

  55. 海洋プレート拡大軸直下における最上部マントルの構造岩石学的特徴~オマーンオフィオライトを例として~ 査読有り

    道林 克禎, 大家 翔馬, 尾上 彩佳, 小田島 庸浩

    日本地質学会学術大会講演要旨   2016 巻 ( 0 ) 頁: 137   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2016.0_137

    CiNii Research

  56. 有馬―高槻構造線六甲断層の断層ガウジ電子顕微鏡観察 査読有り

    道林 克禎, 滝沢 茂

    日本地質学会学術大会講演要旨   2016 巻 ( 0 ) 頁: 345   2016年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2016.0_345

    CiNii Research

  57. 静岡県のGEO DATA(13) : 地学散歩(92) 査読有り

    道林 克禎

    静岡地学   112 巻 ( 112 ) 頁: . - i   2015年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024562

  58. Magnitude and symmetry of seismic anisotropy in mica- and amphibole-bearing metamorphic rocks and implications for tectonic interpretation of seismic data from the southeast Tibetan Plateau 査読有り

    Ji Shaocheng, Shao Tongbin, Michibayashi Katsuyoshi, Oya Shoma, Satsukawa Takako, Wang Qian, Zhao Weihua, Salisbury Matthew H.

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   120 巻 ( 9 ) 頁: 6404 - 6430   2015年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    We calibrated the magnitude and symmetry of seismic anisotropy for 132 mica- or amphibole-bearing metamorphic rocks to constrain their departures from transverse isotropy (TI) which is usually assumed in the interpretation of seismic data. The average bulk Vp anisotropy at 600MPa for the chlorite schists, mica schists, phyllites, sillimanite-mica schists, and amphibole schists examined is 12.0%, 12.8%, 12.8%, 17.0%, and 12.9%, respectively. Most of the schists show Vp anisotropy in the foliation plane which averages 2.4% for phyllites, 3.3% for mica schists, 4.1% for chlorite schists, 6.8% for sillimanite-mica schists, and 5.2% for amphibole schists. This departure from TI is due to the presence of amphibole, sillimanite, and quartz. Amphibole and sillimanite develop strong crystallographic preferred orientations with the fast c axes parallel to the lineation, forming orthorhombic anisotropy with Vp(X)>Vp(Y)>Vp(Z). Effects of quartz are complicated, depending on its volume fraction and prevailing slip system. Most of the mica- or amphibole-bearing schists and mylonites are approximately transversely isotropic in terms of S wave velocities and splitting although their P wave properties may display orthorhombic symmetry. The results provide insight for the interpretation of seismic data from the southeast Tibetan Plateau. The N-S to NW-SE polarized crustal anisotropy in the Sibumasu and Indochina blocks is caused by subvertically foliated mica- and amphibole-bearing rocks deformed by predominantly compressional folding and subordinate strike-slip shear. These blocks have been rotated clockwise 70-90° around the east Himalayan Syntaxis, without finite eastward or southeastward extrusion, in responding to progressive indentation of India into Asia.

    DOI: 10.1002/2015JB012209

    Web of Science

    Scopus

  59. A multi-technique analysis of deuterium trapping and near-surface precipitate growth in plasma-exposed tungsten 査読有り

    Kolasinski R. D., Shimada M., Oya Y., Buchenauer D. A., Chikada T., Cowgill D. F., Donovan D. C., Friddle R. W., Michibayashi K., Sato M.

    JOURNAL OF APPLIED PHYSICS   118 巻 ( 7 )   2015年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Applied Physics  

    In this work, we examine how deuterium becomes trapped in plasma-exposed tungsten and forms near-surface platelet-shaped precipitates. How these bubbles nucleate and grow, as well as the amount of deuterium trapped within, is crucial for interpreting the experimental database. Here, we use a combined experimental/theoretical approach to provide further insight into the underlying physics. With the Tritium Plasma Experiment, we exposed a series of ITER-grade tungsten samples to high flux D plasmas (up to 1.5 × 1022m-2s-1) at temperatures ranging between 103 and 554 °C. Retention of deuterium trapped in the bulk, assessed through thermal desorption spectrometry, reached a maximum at 230 °C and diminished rapidly thereafter for T > 300 °C. Post-mortem examination of the surfaces revealed non-uniform growth of bubbles ranging in diameter between 1 and 10 μm over the surface with a clear correlation with grain boundaries. Electron back-scattering diffraction maps over a large area of the surface confirmed this dependence; grains containing bubbles were aligned with a preferred slip vector along the <111> directions. Focused ion beam profiles suggest that these bubbles nucleated as platelets at depths of 200 nm-1 μm beneath the surface and grew as a result of expansion of sub-surface cracks. To estimate the amount of deuterium trapped in these defects relative to other sites within the material, we applied a continuum-scale treatment of hydrogen isotope precipitation. In addition, we propose a straightforward model of near-surface platelet expansion that reproduces bubble sizes consistent with our measurements. For the tungsten microstructure considered here, we find that bubbles would only weakly affect migration of D into the material, perhaps explaining why deep trapping was observed in prior studies with plasma-exposed neutron-irradiated specimens. We foresee no insurmountable issues that would prevent the theoretical framework developed here from being extended to a broader range of systems where precipitation of insoluble gases in ion beam or plasma-exposed metals is of interest.

    DOI: 10.1063/1.4928184

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    Scopus

  60. 静岡県のGEO DATA(12) : 地学散歩(91) 査読有り

    道林 克禎

    静岡地学   111 巻 ( 111 ) 頁: . - i   2015年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024571

  61. Izu-Bonin-Mariana fore arc: Testing subduction initiation and ophiolite models by drilling the outer Izu-Bonin-Mariana fore arc 査読有り

    Pearce J.A., Reagan M.K., Petronotis K., Morgan S., Almeev R., Avery A.J., Carvallo C., Chapman T., Christeson G.L., Ferré E.C., Godard M., Heaton D.E., Kirchenbaur M., Kurz W., Kutterolf S., Li H., Li Y., Michibayashi K., Nelson W.R., Prytulak J., Python M., Robertson A.H.F., Ryan J.G., Sager W.W., Sakuyama T., Shervais J.W., Shimizu K., Whattam S.A.

    International Ocean Discovery Program: Preliminary Reports   ( 352 )   2015年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:International Ocean Discovery Program: Preliminary Reports  

    The objectives for Expedition 352 were to drill through the entire volcanic sequence of the Bonin fore arc to 1. Obtain a high-fidelity record of magmatic evolution during subduction initiation and early arc development, 2. Test the hypothesis that fore-arc basalt lies beneath boninite and understand chemical gradients within these units and across the transition, 3. Use drilling results to understand how mantle melting processes evolve during and after subduction initiation, and 4. Test the hypothesis that the fore-arc lithosphere created during subduction initiation is the birthplace of suprasubduction zone (SSZ) ophiolites. Expedition 352 successfully cored 1.22 km of igneous basement and 0.46 km of over-lying sediment, providing diverse, stratigraphically controlled suites of fore-arc basalts (FAB) and boninite related to seafloor spreading and earliest arc development. FAB were recovered at the two deeper water sites (U1440 and U1441) and boninites at the two sites (U1439 and U1442) drilled upslope to the west. FAB lavas and dikes are depleted in high-field strength trace elements such as Ti and Zr relative to mid-ocean-ridge basalt but have relatively diverse concentrations of trace elements bezcause of variation in degrees of melting and amount of subducted fluids involved in their genesis. All FAB magmas underwent significant crystal fractionation in a persistent magma chamber system. Holes U1439C and U1442A yielded entirely boninitic lavas. We defined three boninite differentiation series based on variations in MgO, SiO2, and TiO2 concentrations of the parental magmas. Lavas in both pairs of holes have compositions that generally become more primitive and have lower TiO2 concentrations upward. The presence of dikes at the base of the sections at Sites U1439 and U1440 provides evidence that boninitic and FAB lavas are both underlain by their own conduit systems and that FAB and boninite group lavas are likely offset more horizontally than vertically. We thus propose that seafloor spreading related to subduction initiation migrated from east to west after subduction initiation and during early arc development. Initial spreading was likely rapid, and an axial magma chamber was present. Melting was largely decompressional during this period, but subducted fluids affected some melting. As subduction continued and spreading migrated to the west, the embryonic mantle wedge became more depleted, and the influence of subducted constituents dramatically increased, causing the oceanic crust to be built of boninitic rather than tholeiitic magma. The general decrease in fractionation upward reflects the eventual disappearance of persistent magma chambers, either because spreading rate was decreasing with distance from the trench or because spreading was succeeded by off-axis magmatism trenchward of the ridge. The extreme depletion of the sources for all boninitic lavas was likely related to the incorporation of mantle residues from FAB generation. This mantle depletion continued during generation of lower silica boninitic magmas, exhausting clinopyroxene from the mantle such that the capping high-Si, low-Ti boninites were generated from harzburgite. Additional results of the cruise include recovery of Eocene to recent deep-sea sediment that records variation in sedimentation rates with time resulting from variations in climate, the position of the carbonate compensation depth, and local structural control. Three phases of highly explosive volcanism (latest Pliocene to Pleistocene, late Miocene to earliest Pliocene, and Oligocene) were identified, represented by 132 graded air fall tephra layers. Structures found in the cores and reflected in seismic profiles show that this area had periods of normal, reverse, and strike-slip faulting. Finally, basement rock P-wave velocities were shown to be slower than those observed during logging of normal ocean crust sites.

    DOI: 10.14379/iodp.pr.352.2015

    Scopus

  62. Deformation microstructures of glaucophane and lawsonite in experimentally deformed blueschists: Implications for intermediate-depth intraplate earthquakes 査読有り

    Kim Daeyeong, Katayama Ikuo, Wallis Simon, Michibayashi Katsuyoshi, Miyake Akira, Seto Yusuke, Azuma Shintaro

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   120 巻 ( 2 ) 頁: 1229 - 1242   2015年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    A series of simple-shear experiments on blueschist was performed at 400-500°C and 1-2.5 GPa to understand the deformation of seismically active, subducting oceanic crust. The experiments show that brittle microstructures are mainly found at pressures of 1-2 GPa, whereas ductile microstructures form at 2.5 GPa. J-indices (a measure of fabric intensity) of glaucophane crystal preferred orientations change systematically with changing shear strain and confining pressure, and the angle between the slip plane and the shear direction of samples deformed at >2 GPa is similar to that of a strain ellipsoid. These results, together with the variable orientations of fine grains in a selected area electron diffraction image at 2 GPa, indicate that the brittle-ductile transition for glaucophane occurs at ∼2 GPa. In contrast to this, lawsonite in the experiments show abundant fracturing in most specimens and a poor correlation between the J-index, shear strain, and confining pressure. This demonstrates that lawsonite deformed by brittle failure under all experimental conditions. In the case of a starting material that has a strong fabric and deformed under dry experimental conditions, the brittle-ductile transition zone of glaucophane will be much shallower than 2 GPa. Therefore, our initial experimental results on the deformation behavior of blueschist indirectly support the dehydration embrittlement of subducting oceanic crust (glaucophane) as an important factor in the origin of intraplate earthquakes.

    DOI: 10.1002/2014JB011528

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    Scopus

  63. IODP Exp.336大西洋中央海嶺North Pond掘削から採取されたかんらん岩の微細構造解析 査読有り

    針金 由美子, 阿部 なつ江, 道林 克禎, 木村 純一, 常 青

    日本地質学会学術大会講演要旨   2015 巻 ( 0 ) 頁: 403   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2015.0_403

    CiNii Research

  64. P59 プレート沈み込み開始期の火成活動とテトニクスの解明を目指して : IODP第352航海にて採取された岩石試料の分析結果(ポスターセッション) 査読有り

    柵山 徹也, 道林 克禎, 清水 健二, Python Marie, IODP Ex, 乗船研究者一同

    日本火山学会講演予稿集   2015 巻 ( 0 ) 頁: 157   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:特定非営利活動法人 日本火山学会  

    DOI: 10.18940/vsj.2015.0_157

    CiNii Research

  65. マリアナ海溝最西端で採取された海溝カンラン岩の地質学的研究 査読有り

    大家 翔馬, 道林 克禎, 小原 泰彦, 石井 輝秋, 水野 那希, 萬年 一剛

    日本地質学会学術大会講演要旨   2015 巻 ( 0 ) 頁: 113   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2015.0_113

    CiNii Research

  66. 丹沢深成岩体に接する変成マフィック岩の変形微細構造 査読有り

    水野 那希, 道林 克禎

    日本地質学会学術大会講演要旨   2015 巻 ( 0 ) 頁: 410   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2015.0_410

    CiNii Research

  67. 天然のカンラン石ファブリックとテクトニクスの関係 査読有り

    道林 克禎, 尾上 彩佳, 小田島 庸浩

    日本地質学会学術大会講演要旨   2015 巻 ( 0 ) 頁: 112   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2015.0_112

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  68. 静岡県佐久間町中央構造線沿いに分布する鹿塩マイロナイトに重複した脆性破壊組織 査読有り

    遠藤 弘人, 道林 克禎

    日本地質学会学術大会講演要旨   2015 巻 ( 0 ) 頁: 512   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2015.0_512

    CiNii Research

  69. 褶曲していない変形変成岩サンプルから複雑な変形史が読み取れる例:四国東部三波川変成帯のメタチャートの場合 査読有り

    増田 俊明, 西脇 伸, 大森 康智, 松村 太郎次郎, 道林 克禎, 佐津川 貴子, 岡本 敦

    日本地質学会学術大会講演要旨   2015 巻 ( 0 ) 頁: 216   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2015.0_216

    CiNii Research

  70. Olivine Crystallographic Fabrics and Their P-wave Velocity Structures within Peridotites in the Uppermost Mantle 査読有り

    Michibayashi Katsuyoshi

    JOURNAL OF GEOGRAPHY-CHIGAKU ZASSHI   124 巻 ( 3 ) 頁: 397-409 - 409   2015年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 東京地学協会  

    &emsp;Olivine crystal grains have various crystallographic orientations within a peridotite, resulting in a crystallographic fabric as well as a texture. Six types of fabrics have been identified in mantle peridotites: A, B, C, D, E and AG types. These fabric types have unique seismic properties such as P-wave and S-wave velocity anisotropy. A new method is proposed to classify olivine fabrics based on P-wave velocity structure on a Vp-Flinn diagram. Three P-wave velocities (<i>V<sub>1</sub></i>, <i>V<sub>2</sub></i>, <i>V<sub>3</sub></i>) are used, two of which are the maximum (<i>V<sub>1</sub></i>) and minimum (<i>V<sub>3</sub></i>) velocities, and the third (<i>V<sub>2</sub></i>) is the velocity perpendicular to the orientations of these two velocities. Relationships between <i>V<sub>1</sub></i>/<i>V<sub>2</sub></i> and <i>V<sub>2</sub></i>/<i>V<sub>3</sub></i> classify fabrics into three types: A type (equivalent to B, C and E types), D type and AG type. Moreover, taking into account structural framework such as foliation and lineation, the Vp-Flinn diagram can be expanded to identify all types of fabrics. This method is successfully applied to fabrics previously studied in Oman ophiolite.

    DOI: 10.5026/jgeography.124.397

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  71. Reply to comment by Nozaka (2014) on "Dehydration breakdown of antigorite and the formation of B-type olivine CPO" 査読有り

    Nagaya Takayoshi, Wallis Simon R., Kobayashi Hiroaki, Michibayashi Katsuyoshi, Mizukami Tomoyuki, Seto Yusuke, Miyake Akira, Matsumoto Megumi

    EARTH AND PLANETARY SCIENCE LETTERS   408 巻   頁: 406 - 407   2014年12月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    DOI: 10.1016/j.epsl.2014.10.026

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  72. Rheological properties of the detachment shear zone of an oceanic core complex inferred by plagioclase flow law: Godzilla Megamullion, Parece Vela back-arc basin, Philippine Sea 査読有り

    Michibayashi Katsuyoshi, Harigane Yumiko, Ohara Yasuhiko, Muto Jun, Okamoto Atsushi

    EARTH AND PLANETARY SCIENCE LETTERS   408 巻   頁: 16 - 23   2014年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    We tested plagioclase flow laws for rheological properties of the detachment shear zone developed in an oceanic core complex. Gabbroic mylonites occur extensively over the ~125-km length of the Godzilla Megamullion, an enormous oceanic core complex situated in an extinct Philippine Sea back-arc basin. The mylonites were produced in the detachment shear zone at temperatures of 650-850 °C in the lower crust over a period of approximately 4 million years, corresponding to a slow spreading rate of 2.54±0.21 cm/yr (i.e. 8.05×10-10 m/s). Applying the rheological parameters for plagioclase flow laws, combined with the geochronological spreading rate, we calculated deformation mechanism maps of plagioclase as shear strain rates of 10-12 to 10-8 s-1, corresponding to shear zones in thickness of ~0.1 to ~1000 m. Our results show that, assuming a constant stress condition defined by a shear strain rate of 10-12 s-1 for grain size of 1000 μm in a temperature range between 650 and 850 °C, petrofabric parameters such as crystal-preferred orientations and dynamically recrystallized grain sizes along with estimated equilibrium temperatures can be possibly explained by the deformation mechanism maps of plagioclase for shear strain rates mostly of 10-11 to 10-9 s-1. It suggests that even if the entire thickness of the detachment shear zone may lie several hundred meters below the spreading center, the shear zone could be stratified, comprising many anastomosing narrow zones. It implies that, during the development of the detachment fault, strain localization would occur in the lower crust over a broad (~1000 m) zone at high temperatures.

    DOI: 10.1016/j.epsl.2014.10.005

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  73. Plagioclase preferred orientation and induced seismic anisotropy in mafic igneous rocks 査読有り

    Ji Shaocheng, Shao Tongbin, Salisbury Matthew H., Sun Shengsi, Michibayashi Katsuyoshi, Zhao Weihua, Long Changxing, Liang Fenghua, Satsukawa Takako

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   119 巻 ( 11 ) 頁: 8064 - 8088   2014年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    Fractional crystallization and crystal segregation controlled by settling or floating of minerals during the cooling of magma can lead to layered structures in mafic and ultramafic intrusions in continental and oceanic settings in the lower crust. Thus, the seismic properties and fabrics of layered intrusions must be calibrated to gain insight into the origin of seismic reflections and anisotropy in the deep crust. To this end, we have measured P and S wave velocities and anisotropy in 17 plagioclase-rich mafic igneous rocks such as anorthosite and gabbro at hydrostatic pressures up to 650 MPa. Anorthosites and gabbroic anorthosites containing >80 vol% plagioclase and gabbros consisting of nearly equal modal contents of plagioclase and pyroxene display distinctive seismic anisotropy patterns: Vp(Z)/Vp(Y) ≥ 1 and Vp(Z)/Vp(X) ≥ 1 for anorthosites while 0.8 < Vp(Z)/Vp(Y) ≤ 1 and 0.8 < Vp(Z)/Vp(X) ≤ 1 for gabbros. Amphibolites lie in the same domain as gabbros, but show a significantly stronger tendency of Vp(X) > Vp(Y) than the gabbros. Laminated anorthosites with Vp(X) ≈ Vp(Y) Vp(Z) display a strong crystal preferred orientation (CPO) of plagioclase whose (010) planes and [100] and [001] directions parallel to the foliation. For the gabbros and amphibolites characterized by Vp(X) ≈ Vp(Y) > Vp(Z) and Vp(X) > Vp(Y) > Vp(Z), respectively, pyroxene and amphibole play a dominant role over plagioclase in the formation of seismic anisotropy. The Poisson's ratio calculated using the average P and S wave velocities from the three principal propagation-polarization directions (X, Y, and Z) of a highly anisotropic anorthosite cannot represent the value of a true isotropic equivalent. The CPO-induced anisotropy enhances and decreases the foliation-normal incidence reflectivity at gabbro-peridotite and anorthosite-peridotite interfaces, respectively.

    DOI: 10.1002/2014JB011352

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  74. 静岡県のGEO DATA(11) : 地学散歩(90) 査読有り

    道林 克禎

    静岡地学   110 巻 ( 110 ) 頁: . - i   2014年11月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024581

  75. The Yushugou granulite-peridotite terrane as a paleozoic continental crust-mantle transition zone exposed at the northern margin of the southern Tianshan (Xinjiang) 査読有り

    Ji S., Wang Q., Shao T., Sun S., Li A., Michibayashi K., Kondo Y., Li J.

    Geotectonica et Metallogenia   38 巻 ( 3 ) 頁: 473 - 494   2014年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geotectonica et Metallogenia  

    The Yushugou massif in the Kumishi region at the nouthern margin of the southern Tianshan (Xinjiang) consists of extensively deformed peridotites (lherzolite, harzburgite and wehrlite) associated with foliated and lineated mafic composition-dominated granulites, together carried up and emplaced into greenschist-lower amphibolitefacies metasediments at 380-420 Ma. The granulite-peridotite units are interpreted as tectonic slices of continental mantle and lower crustal materials immediately adjacent the Moho. The high pressure metamorphic slices were extruded by tectonic compression from a detachment in the crust-mantle boundary up into the greenschist-lower amphibolite-facies midde crust along intracontinental thrust shear zones. Such compressional uplifts of the crust-mantle transition zone were similar to the Ivrea-Verbano zone in the southern Alps of Italy and the Jijal-Patan-Chilas seuqence in the Kohistan arc of Pakistan. The boundary between mafic granulites and peridotites, which represents an exposed example of the Moho, is a high strain zone: in the mantle rocks olivine defomed by diffusion-accommodated grain bounadry sliding while pyroxenes deformed by disloaction creep, and in the lower crustal mafic granulites both pyroxenes and plagioclase deformed by dislocation creep. Thus, the Yushugou massif provides important clues to the nature and seismic reflecitivity of the continental Moho.

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  76. The Yushugou granulite-peridotite terrane as a paleozoic continental crust-mantle transition zone exposed at the northern margin of the southern Tianshan (Xinjiang) 査読有り

    Ji S

    Geotectonica et Metallogenia   38 巻 ( 3 ) 頁: 473-494   2014年8月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  77. 静大通信(21) 査読有り

    道林 克禎

    静岡地学   109 巻 ( 109 ) 頁: 21 - 21   2014年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024596

  78. 静岡県のGEO DATA(10) : 地学散歩(89) 査読有り

    道林 克禎

    静岡地学   109 巻 ( 109 ) 頁: . - i   2014年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024589

  79. A new method for calculating seismic velocities in rocks containing strongly dimensionally anisotropic mineral grains and its application to antigorite-bearing serpentinite mylonites 査読有り

    Watanabe Tohru, Shirasugi Yuhto, Michibayashi Katsuyoshi

    EARTH AND PLANETARY SCIENCE LETTERS   391 巻   頁: 24 - 35   2014年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Seismic velocity is one of the most important sources of information about the Earth's interior. For its proper interpretation, we must have a thorough understanding of the dependence of seismic velocity on microstructural elements, including the modal composition, the crystal preferred orientation (CPO), the grain shape, the spatial distribution of mineral phases, etc. The conventional Voigt, Reuss and Hill averaging schemes take into account only the modal composition and the CPO. The information about the Earth's interior is thus poorly constrained. For a better interpretation, it is critical to have a calculation method which accounts for the grain shape and the spatial distribution of mineral phases, etc. We propose a calculation method which accounts for the grain shape of strongly dimensionally anisotropic minerals like micas and serpentines. Our method can be applied to a distributed geometrical orientation of mineral grains. Comparison was made between calculated and measured velocities in three antigorite-serpentinite mylonites. Judging from the root mean square relative error, our method provides velocities closer to measured values than the Voigt, Reuss and Hill averaging schemes. The input of the grain shape considerably improves the prediction of seismic properties. However, large discrepancies (>0.1 km/s) between measured and calculated velocities can be seen in some directions. The discrepancies might come from microstructural elements which were not considered in the calculation (layer structures and cracks). © 2014 Elsevier B.V.

    DOI: 10.1016/j.epsl.2014.01.025

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  80. Antigorite-induced seismic anisotropy and implications for deformation in subduction zones and the Tibetan Plateau 査読有り

    Shao Tongbin, Ji Shaocheng, Kondo Yosuke, Michibayashi Katsuyoshi, Wang Qian, Xu Zhiqin, Sun Shengsi, Marcotte Denis, Salisbury Matthew H.

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   119 巻 ( 3 ) 頁: 2068 - 2099   2014年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    The present study, which is a follow-up of the Journal of Geophysical Research paper by Ji et al. (2013a), provides a new calibration for both seismic and fabric properties of antigorite serpentinites. Comparisons of the laboratory velocities of antigorite serpentinites measured at high pressures with crystallographic-preferred orientation data measured using electron backscatter diffraction techniques demonstrate that seismic anisotropy in high T serpentinite, which is essentially controlled by the antigorite c axis fabric, is independent on the operating slip system but strongly dependent on the regime and magnitude of finite strain experienced by the rock. Extrapolation of the experimental data with both pressure and temperature suggests that Vp anisotropy decreases but shear wave splitting (ΔVs) and V p/Vs increase with increasing pressure in either cold or hot subduction zones. For a cold, steeply subducting slab, antigorite is most likely deformed by nearly coaxial flattening or trench-parallel movements, forming trench-parallel seismic anisotropy. For a hot, shallowly subducting slab, however, antigorite is most likely deformed by simple shear or transpression. Trench-normal seismic anisotropy can be observed when the subducting dip angle is smaller than 30°. The geophysical characteristics of the Tibetan Plateau such as strong heterogeneity in Vp, V s and attenuation, shear wave splitting and electric conductivity may be explained by the presence of strongly deformed serpentinites in lithospheric shear zones reactivated along former suture zones between amalgamated blocks, hydrated zones of subducting lithospheric mantle, and the crust-mantle boundary if the temperature is below 700°C in the region of interest. ©2014. American Geophysical Union. All Rights Reserved.

    DOI: 10.1002/2013JB010661

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  81. Flow in the uppermost mantle during back-arc spreading revealed by Ichinomegata peridotite xenoliths, NE Japan 査読有り

    Satsukawa Takako, Michibayashi Katsuyoshi

    LITHOS   189 巻   頁: 89 - 104   2014年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Lithos  

    Spinel peridotite xenoliths from the Ichinomegata Volcano (NE Japan) have distinct foliations defined by compositional layering between olivine-rich and pyroxene-rich layers as well as lineations defined by elongated spinel grains. Crystallographic preferred orientations (CPOs) of olivine are consistent with slip on (010)[100] and {0kl}[100]. The angles between the foliation and the olivine slip planes decrease with increasing values of the J-index (i.e. CPO strength). Such composite planar relationships within the peridotite xenoliths could result from shearing in the uppermost mantle, so that shear strains can be estimated by the angles between the foliation and the olivine slip plane in terms of simple shear strain (0.31-4.26). From these observations, we argue that a suite of the peridotite xenoliths recorded a rare snapshot of uppermost-mantle flow related to back-arc spreading during the opening of the Japan Sea. The peridotite xenoliths with higher J-indices (i.e. higher shear strain) tend to have slightly lower minimum temperatures, possibly defining a vertical strain gradient in the uppermost mantle section at the time of the volcano's eruption. The CPO data have been used to calculate the seismic properties of the xenoliths at PT conditions obtained from geothermobarometry, and are compared to field geophysical data from the literature. Our results are consistent with a roughly EW-oriented fastest P-wave propagation direction in the uppermost mantle beneath the northeast part of the Japan arc. Average samples are calculated based on three different structural reference frames; horizontal plane parallel to 1) foliation, 2) the plane containing the maximum concentration of olivine [100], and 3) P-wave maximum direction. S-wave anisotropy deduced from CPOs requires a reasonable thickness of the anisotropic layer (24.1-26.6. km), and the structural reference frame does not have significant effect on the estimation of thickness. Consequently, Ichinomegata peridotites record a long and complicated tectonic history; they preserve deformation 'frozen in' during back-arc spreading and this deformation also has an effect on present-day mantle flow. © 2013.

    DOI: 10.1016/j.lithos.2013.10.035

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  82. Dehydration breakdown of antigorite and the formation of B-type olivine CPO 査読有り

    Nagaya Takayoshi, Wallis Simon R., Kobayashi Hiroaki, Michibayashi Katsuyoshi, Mizukami Tomoyuki, Seto Yusuke, Miyake Akira, Matsumoto Megumi

    EARTH AND PLANETARY SCIENCE LETTERS   387 巻   頁: 67 - 76   2014年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Peridotite formed by contact metamorphism and dehydration breakdown of an antigorite schist from the Happo area, central Japan shows a strong olivine crystallographic preferred orientation (Ol CPO). The lack of mesoscale deformation structures associated with the intrusion and the lack of microstructural evidence for plastic deformation of neoblastic grains suggest that olivine CPO in this area did not form as a result of solid-state deformation. Instead, the good correspondence between the original antigorite orientation and the orientation of the newly formed olivine implies the CPO formed by topotactic growth of the olivine after antigorite. Ol CPO is likely to develop by a similar process in subduction zone environments where foliated serpentinite is dragged down to depths where antigorite is no longer stable. The Happo Ol CPO has a strong a-axis concentration perpendicular to the lineation and within the foliation-commonly referred to as B-type Ol CPO. Seismic fast directions parallel to the ocean trench are observed in many convergent margins and are consistent with the presence of B-type Ol CPO in the mantle wedge of these regions. Experimental work has shown that B-type CPO can form by dislocation creep under hydrous conditions at relatively high stresses. There are, however, several discrepancies between the characteristics of natural and laboratory samples with B-type Ol CPO. (1) The formation conditions (stress and temperature) of some natural examples with B-type CPO fall outside those predicted by experiments. (2) In deformation experiments, slip in the crystallographic c-axis direction is important but has not been observed in natural examples of B-type CPO. (3) Experimental work suggests the presence of H2O and either high shear stress or relatively low temperatures are essential for the formation of B-type CPO. These conditions are most likely to be achieved close to subduction boundaries, but these regions are also associated with serpentinization, which prevents strong olivine CPO patterns from forming. We show B-type Ol CPO can form as a result of static topotactic growth of olivine after high-temperature breakdown of foliated serpentinite. These results resolve the discrepancies between experimental and natural examples of B-type CPO and show the need to rethink the formation process of olivine CPO in convergent margins. Topotactic growth of olivine after antigorite can account for the inferred distribution of B-type Ol CPO in the mantle wedge more successfully than dislocation creep. © 2013 Elsevier B.V.

    DOI: 10.1016/j.epsl.2013.11.025

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  83. Seismic velocities, anisotropy and elastic properties of Xiuyan jade and its geological implications 査読有り

    Wang Q

    Geotectonica et Metallogenia   38 巻 ( 1 ) 頁: 12-26   2014年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  84. Influence of mineral fraction on the rheological properties of forsterite plus enstatite during grain size sensitive creep: 3. Application of grain growth and flow laws on peridotite ultramylonite 査読有り

    Tasaka Miki, Hiraga Takehiko, Michibayashi Katsuyoshi

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   119 巻 ( 2 ) 頁: 840 - 857   2014年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    Microstructures of a layered peridotite ultramylonite from the Oman ophiolite are compared with that of experimentally deformed samples. Average grain sizes and grain size ratios of olivine and pyroxene from each layer are compared with respect to the fraction of pyroxene (fpx) in the layer. Grain size of the pyroxene is almost constant among different fpx layers, whereas olivine grain size decreases significantly with increasing fpx, both of which were characteristic features found in forsterite + enstatite aggregates after grain growth experiments (Tasaka and Hiraga, 2013). Furthermore, the Zener relationship (log dol/dpx versus log fpx) found in the ultramylonite is remarkably comparable to that observed in our experiments. These observations indicate effective pinning of olivine grain growth due to the presence of pyroxene grains during the deformation of the rocks. Olivine grains in layers with fpx ≥ 0.03 do not exhibit lattice-preferred orientation (LPO), whereas the grains in layers with fpx <0.03 exhibit LPO, indicating that deformation proceeded via diffusion- And dislocation-accommodated creep in the former and the latter layers, respectively. We simulated the evolution of grain size and viscosity in the shear zone based on our grain growth and flow laws obtained for diffusion creep of forsterite + enstatite (Tasaka and Hiraga, 2013; Tasaka et al., 2013) and successfully reproduced the observed grain sizes in the ultramylonite. We therefore conclude that the relative values of the kinetic parameters, some of which are functions of the fpx, are applicable to nature. © 2014. American Geophysical Union.

    DOI: 10.1002/2013JB010619

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  85. Seismic velocities, anisotropy and elastic properties of Xiuyan jade and its geological implications 査読有り

    Wang Q., Shao T., Ji S., Michibayashi K., Kondo Y., Long C., Sun S.

    Geotectonica et Metallogenia   38 巻 ( 1 ) 頁: 12 - 26   2014年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geotectonica et Metallogenia  

    Antigorite is a main contributor to the formation of anomalously low seismic velocities and high anisotropy in subducting oceanic slabs, forearc mantle wedges and subcontinental mantle shear zones. Here we report new results on P- and S-wave velocities and anisotropy in 8 antigorite serpentinite samples ("Xiuyan jade" from Liaoning, China), measured at pressures up to 600 MPa. The results combined with previous experimental data allow us to distinguish the effects of low and high temperature (LT and HT) serpentinization on seismic velocities in the upper mantle. Serpentine contents in hydrous subducting slabs, mantle wedges and subcontinental mantle shear zones where temperature is >300°C should be at least twice as large as previous estimates based on LT serpentinization. The intrinsic Vp and Vs anisotropy of serpentinites, formed by plastic flow-induced lattice-preferred orientation (LPO) of antigorite, can be as high as 21% and 24%, respectively. Our results provide a new explanation for various anisotropy patterns observed in subduction systems worldwide. For a steeply subducting slab, antigorite is most likely deformed by nearly coaxial flattening and thus the trench-parallel seismic velocity is much faster than the trench-normal velocity. For a shallowly subducting slab, however, antigorite is most likely deformed by simple shear. Within the horizontal plane, the trench-normal velocity can be smaller, equal to, or larger than the trench-parallel velocity, depending on the dip angle of subduction. The geophysical characteristics of the Tibetan Plateau such as strong heterogeneities in seismic velocities and attenuation, shear wave splitting and electric conductivity can be equally explained by the presence of serpentinized shear zones within the subcontinental mantle.

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  86. A database of plagioclase crystal preferred orientations (CPO) and microstructures - implications for CPO origin, strength, symmetry and seismic anisotropy in gabbroic rocks (vol 4, pg 511, 2013) 査読有り

    Satsukawa T., Ildefonse B., Mainprice D., Morales L. F. G., Michibayashi K., Barou F.

    SOLID EARTH   5 巻 ( 1 ) 頁: 509 - 509   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Solid Earth  

    DOI: 10.5194/se-5-509-2014

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  87. P2-22 プレート沈み込み開始期の火成活動とテトニクスの解明 : IODP Exp.352航海速報(ポスターセッション) 査読有り

    柵山 徹也, 道林 克禎, 清水 健二, Python Marie, IODP Ex, 乗船研究者一同

    日本火山学会講演予稿集   2014 巻 ( 0 ) 頁: 174   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:特定非営利活動法人 日本火山学会  

    DOI: 10.18940/vsj.2014.0_174

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  88. 超モホール計画 査読有り

    阿部 なつ江, 森下 知晃, 道林 克禎

    日本地質学会学術大会講演要旨   2014 巻 ( 0 ) 頁: 095   2014年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2014.0_095

    CiNii Research

  89. The earliest mantle fabrics formed during subduction zone infancy 査読有り

    Harigane Y.

    Earth and Planetary Science Letters   377-378 巻   頁: 106-113   2013年9月

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    記述言語:英語  

    DOI: 10.1016/j.epsl.2013.06.031

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  90. A new calibration of seismic velocities, anisotropy, fabrics, and elastic moduli of amphibole-rich rocks 査読有り

    Ji Shaocheng, Shao Tongbin, Michibayashi Katsuyoshi, Long Changxing, Wang Qian, Kondo Yosuke, Zhao Weihua, Wang Hongcai, Salisbury Matthew H.

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   118 巻 ( 9 ) 頁: 4699 - 4728   2013年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research E: Planets  

    A large portion of the middle to lower crust beneath the continents and oceanic island arcs consists of amphibolites dominated by hornblende and plagioclase. We have measured P and S wave velocities (Vp and V s) and anisotropy of 17 amphibole-rich rock samples containing 34-80 vol % amphibole at hydrostatic pressures (P) up to 650 MPa. Combined petrophysical and geochemical analyses provide a new calibration for mean density, average major element contents, mean Vp-P and V s-P coefficients, intrinsic Vp and Vs anisotropy, Poisson's ratios, the logarithmic ratio Rs/p, and elastic moduli of amphibole-rich rocks. The Vp values decrease with increasing SiO2 and Na2O + K2O contents but increase with increasing MgO and CaO contents. The maximum (≤0.38-0.40 km/s) and minimum S wave birefringence values occur generally in the propagation direction parallel to Y and normal to foliation, respectively. Amphibole plays a critical role in the formation of seismic anisotropy, whereas the presence of plagioclase, quartz, pyroxene, and garnet diminishes the anisotropy induced by amphibole crystallographic preferred orientations (CPOs). The CPO variations cause different anisotropy patterns illustrated in the Flinn diagram of V p(X)/Vp(Y)-Vp(Y)/Vp(Z) plots. The results make it possible to distinguish, in terms of seismic properties, the amphibolites from other categories of lithology such as granite-granodiorite, diorite, gabbro-diabase, felsic gneiss, mafic gneiss, eclogite, and peridotite within the Earth's crust. Hence, amphibole, aligned by dislocation creep, anisotropic growth, or rigid-body rotation, is the most important contributor to the seismic anisotropy of the deep crust beneath the continents and oceanic island arcs, which contains rather little phyllosilicates such as mica or chlorite. Key Points New calibration of seismic velocities and anisotropy of amphibole-rich rocksAmphibolites are abundant in the crust beneath continents and oceanic islandsAmphibole plays a critical role in the formation of seismic anisotropy © 2013. American Geophysical Union. All Rights Reserved.

    DOI: 10.1002/jgrb.50352

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  91. Deformation fabrics of natural blueschists and implications for seismic anisotropy in subducting oceanic crust 査読有り

    Kim Daeyeong, Katayama Ikuo, Michibayashi Katsuyoshi, Tsujimori Tatsuki

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS   222 巻   頁: 8 - 21   2013年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physics of the Earth and Planetary Interiors  

    Investigations of microstructures are crucial if we are to understand the seismic anisotropy of subducting oceanic crust, and here we report on our systematic fabric analyses of glaucophane, lawsonite, and epidote in naturally deformed blueschists from the Diablo Range and Franciscan Complex in California, and the Hida Mountains in Japan. Glaucophanes in the analyzed samples consist of very fine grains that are well aligned along the foliation and have high aspect ratios and strong crystal preferred orientations (CPOs) characterized by a (100)[001] pattern. These characteristics, together with a bimodal distribution of grain sizes from some samples, possibly indicate the occurrence of dynamic recrystallization for glaucophane. Although lawsonite and epidote display high aspect ratios and a strong CPO of (001)[010], the occurrence of straight grain boundaries and euhedral crystals indicates that rigid body rotation was the dominant deformation mechanism. The P-wave (AVP) and S-wave (AVS) seismic anisotropies of glaucophane (AVP=20.4%, AVS=11.5%) and epidote (AVP=9.0%, AVS=8.0%) are typical of the crust; consequently, the fastest propagation of P-waves is parallel to the [001] maxima, and the polarization of S-waves parallel to the foliation can form a trench-parallel seismic anisotropy owing to the slowest VS polarization being normal to the subducting slab. The seismic anisotropy of lawsonite (AVP=9.6%, AVS=19.9%) is characterized by the fast propagation of P-waves subnormal to the lawsonite [001] maxima and polarization of S-waves perpendicular to the foliation and lineation, which can generate a trench-normal anisotropy. The AVS of lawsonite blueschist (5.6-9.2%) is weak compared with that of epidote blueschist (8.4-11.1%). Calculations of the thickness of the anisotropic layer indicate that glaucophane and lawsonite contribute to the trench-parallel and trench-normal seismic anisotropy beneath NE Japan, but not to that beneath the Ryukyu arc. Our results demonstrate, therefore, that lawsonite has a strong influence on seismic velocities in the oceanic crust, and that lawsonite might be the cause of complex anisotropic patterns in subduction zones. © 2013 Elsevier B.V.

    DOI: 10.1016/j.pepi.2013.06.011

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  92. Olivine fabric evolution in a hydrated ductile shear zone at the Moho Transition Zone, Oman Ophiolite 査読有り

    Michibayashi Katsuyoshi, Oohara Tatsuya

    EARTH AND PLANETARY SCIENCE LETTERS   377 巻   頁: 299 - 310   2013年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    The Fizh massif, Oman Ophiolite, contains a ductile shear zone at the Moho Transition Zone. The dunites in the shear zone are classified based on microstructures into coarse granular texture, medium-grained texture, mylonite, and ultramylonites toward a gabbro contact. The average grain size of olivine decreases toward the shear zone, which contains a zone of high strain (~15 m wide). The proportion of hydrous minerals (amphibole and chlorite) in the shear zone show an increase toward the gabbro contact, suggesting that water infiltrated the shear zone from the gabbro contact. Equilibrium temperatures indicate a higher deformation temperature (~900°C) outside of the high strain zone compared with inside this zone (~750°C). Under these geochemical and temperature conditions, the temporal evolution of olivine crystal-preferred orientations (CPO) indicates the following continuous deformation scenario. First, deformation by dislocation creep under higher temperatures resulted in slip by D-type {0. kl}[100] and then weak E-type (001)[100] slip. Next, deformation by dislocation creep under lower temperatures and higher stress conditions produced a C-type (100)[001] CPO. Finally, superplastic deformation by grain boundary sliding resulted in a random CPO. © 2013 Elsevier B.V.

    DOI: 10.1016/j.epsl.2013.07.009

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  93. The earliest mantle fabrics formed during subduction zone infancy 査読有り

    Yumiko Harigane, Katsuyoshi Michibayashi, Tomoaki Morishita, Kenichiro Tani, Henry J. B. Dick, Osamu Ishizuka

    EARTH AND PLANETARY SCIENCE LETTERS   377 巻   頁: 106 - 113   2013年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:ELSEVIER SCIENCE BV  

    Harzburgites obtained from the oldest crust-mantle section in the Philippine Sea plate (similar to 52 Ma) along the landward slope of the southern lzu-Ogasawara Trench, preserve mantle fabrics formed during the infancy of the subduction zone; that is during the initial stages of Pacific plate subduction beneath the Philippine Sea plate. The harzburgites have relatively fresh primary minerals despite of their heavy serpentinizations, and show inequigranular interlobate textures, and crystal preferred orientation patterns in olivine (001)1100] and Opx (100)1001]. The harzburgites have the characteristics of residual peridotites, whereas the dunites, obtained from the same location as the harzburgites, provide evidence for the earliest stages of arc volcanism during the inception of subduction. We propose that the (001)1100] olivine patterns began forming in immature fore-arc mantle with an increase in slab-derived hydrous fluids during the initial stages of subduction in in situ oceanic island arc. (C) 2013 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.eps1.2013.06.031

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  94. オマーンオフィオライトモホ遷移帯に発達した延性剪断帯におけるマフィック岩の全岩化学組成分析 査読有り

    古畑 圭介, 道林 克禎, 山下 浩之

    静岡大学地球科学研究報告   40 巻 ( 0 ) 頁: 13 - 19   2013年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:国立大学法人 静岡大学理学部地球科学教室  

    DOI: 10.51053/shizuoka.40.0_13

    CiNii Research

  95. オマーンオフィオライトモホ遷移帯に発達した延性剪断帯におけるマフィック岩の全岩化学組成分析 査読有り

    古畑 圭介, 道林 克禎, 山下 浩之

    静岡大学地球科学研究報告   40 巻 ( 40 ) 頁: 13-19 - 19   2013年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡大学地球科学教室  

    DOI: 10.14945/00007428

  96. 静岡大学通信(19) 査読有り

    道林 克禎

    静岡地学   107 巻 ( 107 ) 頁: . - 19   2013年6月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024613

  97. Preface to "Deformation, porphyroblasts and mountain building: A special issue in honour of the career contributions of TH Bell" 査読有り

    Aerden Domingo G. A. M., Johnson Scott E., Michibayashi Katsuyoshi

    TECTONOPHYSICS   587 巻   頁: 1 - 3   2013年3月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    DOI: 10.1016/j.tecto.2012.11.027

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  98. Progressive deformation partitioning and recrystallization of olivine in the lithospheric mantle 査読有り

    Michibayashi Katsuyoshi, Suzuki Makoto, Komori Naoaki

    TECTONOPHYSICS   587 巻   頁: 79 - 88   2013年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    Intense serpentinization within the Machinoyama ultramafic body, eastern-most part of the Yakuno ophiolite in the Paleozoic Maizuru belt, SW Japan, resulted in the development of block-in-matrix structure in the brittle regime, possibly associated with exhumation along a fault. Various microstructures are heterogeneously distributed throughout peridotite blocks in a serpentinite matrix. The microstructures are classified into four domains according to olivine grain size: coarse (1.0-1.5. mm), medium (0.5-1.0. mm), small (0.2-0.5. mm), and fine-grained (0.01. mm). Even in a single peridotite block, the medium-, small- and fine-grained domains occur at various scales. In particular, the fine-grained domain occurs in thin zones that cut across the other domains. These observations suggest that deformation in the peridotites before the serpentinization was partitioned into anastomosing zones during progressive inhomogeneous non-coaxial shear, resulting in the simultaneous development of a range of microstructures from the coarse-grained domain to the small-grained domain. Olivine crystal-preferred orientations tend to be weaker with decreasing olivine grain size, indicating a change in deformation mechanism from dislocation creep to grain-size-sensitive creep. Moreover, the fine-grained domains contain much more second phase than the small-grained domain even in the same sample, suggesting the role of the second phases on strain localization during dynamic recrystallization of olivine. © 2012 Elsevier B.V.

    DOI: 10.1016/j.tecto.2012.07.008

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  99. Rheological contrast between glaucophane and lawsonite in naturally deformed blueschist from Diablo Range, California 査読有り

    Kim Daeyeong, Katayama Ikuo, Michibayashi Katsuyoshi, Tsujimori Tatsuki

    ISLAND ARC   22 巻 ( 1 ) 頁: 63 - 73   2013年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Island Arc  

    Deformation microstructures for a lawsonite blueschist from the New Idria serpentinite body, Diablo Range, are investigated to clarify rheological behaviors of glaucophane and lawsonite, which are main mineral assemblages of subducting oceanic crust at relatively cold geotherm. Developments of crystal-preferred orientations (CPOs) with small grain size, irregular grain boundary and high aspect ratio of glaucophane indicate deformation mechanism as recovery and dynamic recrystallization possibly accommodated by dislocation creep, while lawsonite deforms by rigid body rotation based on euhedral grains with angular or straight grain boundaries. Higher aspect ratios, lower angle to foliation, and stronger CPOs of both minerals in the glaucophane-rich layer rather than those in the lawsonite-rich layer suggest the strain localization into the glaucophane-rich layer. Additionally fabric strength (the degree of crystal alignment) and seismic anisotropy are higher in the glaucophane-rich layer than that of the lawsonite-rich layer, which is consistent with the microstructural analyses. All our results imply, therefore, the dominant role of glaucophane rather than lawsonite for rheological behavior and seismic anisotropy of blueschist. © 2012 Wiley Publishing Asia Pty Ltd.

    DOI: 10.1111/iar.12003

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  100. Scientific drilling and related research in the samail ophiolite, sultanate of Oman 査読有り

    Kelemen P., Al Rajhi A., Godard M., Ildefonse B., Köpke J., MacLeod C., Manning C., Michibayashi K., Nasir S., Shock E., Takazawa E., Teagle D.

    Scientific Drilling   ( 15 ) 頁: 64 - 71   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Drilling  

    DOI: 10.2204/iodp.sd.15.10.2013

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  101. レソト王国キンバーライトカンラン岩捕獲岩の構造岩石学的特徴 査読有り

    梅垣 俊哉, 道林 克禎, 片山 郁夫, 小宮 剛

    日本地質学会学術大会講演要旨   2013 巻 ( 0 ) 頁: 427   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2013.0_427

    CiNii Research

  102. マリアナ海溝南チャモロ蛇紋岩海山かんらん岩のファブリックと化学組成の特徴 査読有り

    近藤 洋裕, 藤井 彩乃, 道林 克禎, 石井 輝秋, Fryer Patricia, 前川 寛和

    日本地質学会学術大会講演要旨   2013 巻 ( 0 ) 頁: 426   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2013.0_426

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  103. Vp異方性によるかんらん石ファブリックのタイプ分けと海洋リソスフェアへの応用 査読有り

    道林 克禎, 尾上 彩佳

    日本地質学会学術大会講演要旨   2013 巻 ( 0 ) 頁: 106   2013年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2013.0_106

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  104. 走査型蛍光X線分析顕微鏡を用いた層状はんれい岩の組織解析:予察 査読有り

    針金 由美子, 道林 克禎

    静岡大学地球科学研究報告   39 巻 ( 0 ) 頁: 7 - 27   2012年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:国立大学法人 静岡大学理学部地球科学教室  

    DOI: 10.51053/shizuoka.39.0_7

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  105. 走査型蛍光X線分析顕微鏡を用いた層状はんれい岩の組織解析 : 予察 査読有り

    針金 由美子, 道林 克禎

    静岡大学地球科学研究報告   39 巻 ( 39 ) 頁: 7-27 - 27   2012年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡大学地球科学教室  

    DOI: 10.14945/00007130

  106. Solution-precipitation of K-feldspar in deformed granitoids and its relationship to the distribution of water 査読有り

    Fukuda Jun-ichi, Okudaira Takamoto, Satsukawa Takako, Michibayashi Katsuyoshi

    TECTONOPHYSICS   532 巻   頁: 175 - 185   2012年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    We have investigated K-feldspar recrystallisation in granitoid mylonites within a ductile shear zone from the Ryoke metamorphic belt, SW Japan. Fine-grained K-feldspar (20μm on average) occurs in the matrix and in pull-apart areas within fractured K-feldspar porphyroclasts. These fine grains are elongated and oriented parallel to the main foliation in the matrix, and their grain surfaces, observed with the scanning electron microscope, are not smooth, but rough due to the development of very fine (<1μm) round grains of K-feldspar on the surface of each grain. In pull-apart areas, the crystallographic orientation of fine-grained K-feldspar, as measured by electron backscatter diffraction (EBSD), is strongly controlled by that of the host porphyroclast, and shows rotations with shear components parallel to fractures. In the matrix, the crystallographic orientation of fine-grained K-feldspar is not consistent with intracrystalline plasticity, but rather with a growth rate that is slightly controlled by nearby porphyroclasts. All this, together with the growth features on grains, suggests that solution-precipitation of K-feldspar from K-rich aqueous fluid occurred during progressive deformation. Infrared (IR) mapping was performed to evaluate the distribution of water in pull-apart areas and the matrix. Water is heterogeneously distributed within K-feldspar porphyroclasts, which contain 150-2200ppm H 2O. In contrast, the water content is low (150-300ppm H 2O) and homogeneously distributed in fine-grained K-feldspar in the matrix and pull-apart areas, even though included in these analyses are grain boundaries that can generally contain abundant aqueous fluid. The results of EBSD analysis and IR mapping indicate that water is released during solution-precipitation of K-feldspar under mid-crustal conditions. The solution-precipitation process under a water-rich environment in the middle crust results in the formation of fine grains, possibly deforming dominantly by grain-size-sensitive creep, and with the release of aqueous fluid involved in the process. © 2012 Elsevier B.V.

    DOI: 10.1016/j.tecto.2012.01.033

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  107. Grain growth kinetics and the effect of crystallographic anisotropy on normal grain growth of quartz 査読有り

    Michibayashi Katsuyoshi, Imoto Hisashi

    PHYSICS AND CHEMISTRY OF MINERALS   39 巻 ( 3 ) 頁: 213 - 218   2012年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physics and Chemistry of Minerals  

    Annealing experiments on agate were performed to investigate grain growth kinetics and the effect of crystallographic anisotropy on normal grain growth of quartz. The experiments were conducted using a piston-cylinder apparatus at 700-800°C and 0.5 GPa for 0-66 h. The grain growth rate was expressed by D n-D 0n = kt with k = k 0exp(-H*/RT) where D 0 is the initial grain size at t = 0, with n = 4.4 ± 0.3, and H* = 191.3 ± 11.0 kJ/mol is the activation enthalpy and logk 0 = 19.8 ± 1.4. While the grain aspect ratios are nearly constant at ~0.7 (short/long) during grain growth, the longest axis in individual grains tends to be oriented parallel to their c-axis, indicating that a primary crystal-preferred orientation of c-axis of the agate could result in the development of a weak shape-preferred orientation during grain growth. © 2011 Springer-Verlag.

    DOI: 10.1007/s00269-011-0476-6

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  108. A serpentinite-hosted ecosystem in the Southern Mariana Forearc 査読有り

    Ohara Yasuhiko, Reagan Mark K., Fujikura Katsunori, Watanabe Hiromi, Michibayashi Katsuyoshi, Ishii Teruaki, Stern Robert J., Pujana Ignacio, Martinez Fernando, Girard Guillaume, Ribeiro Julia, Brounce Maryjo, Komori Naoaki, Kino Masashi

    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA   109 巻 ( 8 ) 頁: 2831-2835   2012年2月

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  109. Seismic properties of peridotite xenoliths as a clue to imaging the lithospheric mantle beneath NE Tasmania, Australia 査読有り

    Michibayashi K., Kusafuka Y., Satsukawa T., Nasir S. J.

    TECTONOPHYSICS   522 巻   頁: 218 - 223   2012年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    Peridotite xenoliths from Northeast Tasmania, Australia, consist of spinel lherzolites and minor dunites that originated from the uppermost mantle at depths of less than 40. km, based on the geothermal gradient beneath Tasmania, where the depth of the Moho is 29. km. The crystal preferred orientations (CPOs) of olivine and pyroxene were measured in 5 of 13 collected samples (1 dunite and 4 lherzolites) that were large enough to enable measurements. Olivine CPOs indicate the dominance of (010) [100] slip. Geothermobarometric analyses of the xenoliths yield temperatures of 950-1050. °C and pressures of 0.7-1.1. GPa. Using these data, we calculated changes in the seismic properties of a rock with ideal volume fractions of olivine and pyroxene under conditions of 1000. °C and 1. GPa, for various orientations of the structural reference frame in the case of three geodynamic models (extension, shear, and upwelling). The model of horizontal extension performs best in explaining the structure of the uppermost lithospheric mantle beneath Northeast Tasmania. © 2011 Elsevier B.V.

    DOI: 10.1016/j.tecto.2011.12.002

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  110. Olivine fabrics: A key to explore upper mantle structure 査読有り

    Michibayashi K.

    Japanese Magazine of Mineralogical and Petrological Sciences   41 巻 ( 6 ) 頁: 267 - 274   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Japanese Magazine of Mineralogical and Petrological Sciences  

    The understanding of olivine fabric has dramatically been progressed during the last~10 years by both natural and experimental studies along with the major technological improvement. Crystal-preferred orientations (CPO) are the expression of crystallographic fabrics of grains within the rock with respect to the structural frame (X-,Y- and Z-axes). CPO patterns can be interpreted based on the plane of plastic flow and the flow direction. Olivine fabrics, which are olivine CPO patterns, have been classified into five types: A, B, C, D and E types by a series of experimental studies. An additional AG type has also been proposed in recognition of its common occurrence in nature. New results have already required major modiications to the geodynamic interpretation of the upper mantle, although some uncertainties still remain regarding the olivine fabrics and their development. © 2012, Japan Association of Mineralogical Sciences. All rights reserved.

    DOI: 10.2465/gkk.120712b

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  111. キンバーライトかんらん岩捕獲岩の構造岩石学的特徴 査読有り

    木野 雅史, 道林 克禎, 片山 郁夫, 小宮 剛

    日本地質学会学術大会講演要旨   2012 巻 ( 0 ) 頁: 379   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2012.0_379

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  112. マリアナ海溝蛇紋岩海山から産出したカンラン岩の構造岩石学的特徴 査読有り

    近藤 洋裕, 藤井 彩乃, 道林 克禎, 石井 輝秋, Fryer Patricia, 前川 寛和

    日本地質学会学術大会講演要旨   2012 巻 ( 0 ) 頁: 149   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2012.0_149

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  113. マイクロブーディン解析による主応力軸方向の検証 査読有り

    西脇 伸, 大森 康智, 木村 希生, 岡本 敦, 佐津川 貴子, 道林 克禎, 増田 俊明

    日本地質学会学術大会講演要旨   2012 巻 ( 0 ) 頁: 425   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2012.0_425

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  114. スコットランド南東部シッカー岬とハットンの不整合 査読有り

    道林 克禎, 森下 知晃, 村山 雅史, 西 弘嗣, 尾鼻 浩一郎, 鈴木 庸平, 高澤 栄一, 山田 泰広, 横山 祐典

    地質学雑誌   118 巻 ( 11 ) 頁: IX-X - X   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.5575/geosoc.118.11.IX_X

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  115. モホ点描-超深部掘削で何がわかるのか? 査読有り

    道林 克禎

    地球   34 巻   頁: 189 - 193   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  116. 上部マントル構造を探る手がかり 査読有り

    道林 克禎

    岩石鉱物科学   41 巻   頁: 267 - 274   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  117. 海洋地殻-マントル境界に発達した延性剪断帯と加水による軟化作用 査読有り

    道林 克禎

    月刊地球   390号Vol.34 巻   頁: 136 - 141   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  118. 海洋地殻.マントル境界に発達した延性剪断帯と加水による軟化作用 査読有り

    道林 克禎

    地球   34 巻   頁: 136 - 141   2012年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  119. Seismic anisotropy of the uppermost mantle beneath the Rio Grande rift: Evidence from Kilbourne Hole peridotite xenoliths, New Mexico 査読有り

    Satsukawa Takako, Michibayashi Katsuyoshi, Anthony Elizabeth Y., Stern Robert J., Gao Stephen S., Liu Kelly H.

    EARTH AND PLANETARY SCIENCE LETTERS   311 巻 ( 1-2 ) 頁: 172 - 181   2011年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Peridotite xenoliths from the Kilbourne Hole maar, New Mexico, consist of spinel lherzolite, harzburgite, and dunite. Because Kilbourne Hole erupted at approximately 10. ka, these xenoliths represent essentially current conditions beneath the Rio Grande rift. In this study, we present detailed petrofabric data and seismic properties obtained from peridotite xenoliths from Kilbourne Hole to illuminate the origin and significance of shear-wave splitting in the uppermost mantle beneath this active rift. Using phase relations and the temperature of equilibration, we infer that these xenoliths were derived from the uppermost mantle, from depths of 35-60. km. Their crystallographic preferred orientations indicate the preservation of olivine b-axis fiber fabrics with a strong concentration of [010] with girdles of [100] and [001]. We consider three geodynamic models for the source region of these xenoliths: horizontal extension, lateral shear, and upwelling. After calculating seismic properties using a volume fraction of olivine, orthopyroxene and clinopyroxene appropriate to each model, we conclude that these xenoliths are derived from a lateral shear zone (vertical foliation (XY plane) and horizontal lineation within the plane of the foliation (X-axis)). However, the degree of seismic anisotropy generated by peridotite xenoliths alone is limited, so that the existence of melt in thin cracks or dikes could be required to cause a significant increase; the orientation of such melt pockets parallel to the XY plane in either model would result in an increase in anisotropy. These results indicate that the shear-wave splitting observed in the Rio Grande rift is a reflection of the lithospheric fabric and the presence of melts as thin cracks or dikes. © 2011 Elsevier B.V.

    DOI: 10.1016/j.epsl.2011.09.013

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  120. 夜久野オフィオライト待ちの山超マフィック岩体南部断層境界に発達したブロックインマトリックス構造 査読有り

    小森 直昭, 道林 克禎

    静岡大学地球科学研究報告   38 巻 ( 0 ) 頁: 21 - 26   2011年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:国立大学法人 静岡大学理学部地球科学教室  

    DOI: 10.51053/shizuoka.38.0_21

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  121. Subduction related antigorite CPO patterns from forearc mantle in the Sanbagawa belt, southwest Japan 査読有り

    Nishii A., Wallis S. R., Mizukami T., Michibayashi K.

    JOURNAL OF STRUCTURAL GEOLOGY   33 巻 ( 10 ) 頁: 1436 - 1445   2011年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Structural Geology  

    Antigorite (Atg) is stable throughout large parts of the wedge mantle of most subduction zones. Atg shows strong acoustic anisotropy and crystallographic preferred orientation (CPO) patterns of this mineral may contribute significantly to seismic anisotropy in convergent margins. Atg CPO patterns from the Higashi-Akaishi (HA) forearc mantle body of southwest Japan adds to the data set suggesting the most common Atg CPO pattern has a c-axis perpendicular to the foliation and a b-axis parallel to the stretching lineation. Statistical analysis using the eigenvector method of Atg CPO from two mutually perpendicular directions in the same sample (YZ-section and XZ-section) shows no significant differences implying sample preparation has no significant affect on the resulting Atg CPO. Reuss (uniform stress) averages of anisotropy for the Higashi-Akaishi samples are approximately treble the values for Voigt (uniform strain) averages. When comparing calculated anisotropy of hydrated mantle peridotite samples-such as the Higashi-Akaishi unit-with observed S-wave delay times in convergent margins, the appropriate averaging method needs to be considered. © 2011.

    DOI: 10.1016/j.jsg.2011.08.006

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  122. 夜久野オフィオライト待ちの山超マフィック岩体南部断層境界に発達したブロックインマトリックス構造 査読有り

    小森 直昭, 道林 克禎

    静岡大学地球科学研究報告   38 巻 ( 38 ) 頁: 21-26 - 26   2011年10月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡大学地球科学教室  

    DOI: 10.14945/00006209

  123. Drilling constraints on lithospheric accretion and evolution at Atlantis Massif, Mid-Atlantic Ridge 30N.

    Blackman, D.K, Ildefonse, B., John, B.E. 他

    Journal of Geophysical Research B: Solid Earth   116 巻 ( B7 ) 頁: 1 - 25   2011年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    Expeditions 304 and 305 of the Integrated Ocean Drilling Program cored and logged a 1.4 km section of the domal core of Atlantis Massif. Postdrilling research results summarized here constrain the structure and lithology of the Central Dome of this oceanic core complex. The dominantly gabbroic sequence recovered contrasts with predrilling predictions; application of the ground truth in subsequent geophysical processing has produced self-consistent models for the Central Dome. The presence of many thin interfingered petrologic units indicates that the intrusions forming the domal core were emplaced over a minimum of 100-220 kyr, and not as a single magma pulse. Isotopic and mineralogical alteration is intense in the upper 100 m but decreases in intensity with depth. Below 800 m, alteration is restricted to narrow zones surrounding faults, veins, igneous contacts, and to an interval of locally intense serpentinization in olivine-rich troctolite. Hydration of the lithosphere occurred over the complete range of temperature conditions from granulite to zeolite facies, but was predominantly in the amphibolite and greenschist range. Deformation of the sequence was remarkably localized, despite paleomagnetic indications that the dome has undergone at least 45 rotation, presumably during unroofing via detachment faulting. Both the deformation pattern and the lithology contrast with what is known from seafloor studies on the adjacent Southern Ridge of the massif. There, the detachment capping the domal core deformed a 100 m thick zone and serpentinized peridotite comprises ∼70% of recovered samples. We develop a working model of the evolution of Atlantis Massif over the past 2 Myr, outlining several stages that could explain the observed similarities and differences between the Central Dome and the Southern Ridge. Copyright 2011 by the American Geophysical Union.

    DOI: 10.1029/2010JB007931

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  124. 静岡大学通信(19) 査読有り

    道林 克禎

    静岡地学   103 巻 ( 103 ) 頁: 39 - 39   2011年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024731

  125. Deformation and hydrothermal metamorphism of gabbroic rocks within the Godzilla Megamullion, Parece Vela Basin, Philippine Sea 査読有り

    Harigane Yumiko, Michibayashi Katsuyoshi, Ohara Yasuhiko

    LITHOS   124 巻 ( 3-4 ) 頁: 185 - 199   2011年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Lithos  

    Microstructural and petrologic analyses of 7 gabbroic rocks sampled from the medial area of the Godzilla Megamullion (site KH07-02-D18), located along the Parece Vela Basin spreading ridge (Parece Vela Rift), Philippine Sea, reveal the development of a high-temperature ductile shear zone associated with hydrothermal metamorphism in the lower crust. The deformed gabbroic rocks are petrographically classified into mylonites and an ultramylonite, and are characterized by porphyroclastic textures consisting mainly of coarse plagioclase and clinopyroxene/amphibole porphyroclasts in a fine-grained matrix. Plagioclase crystallographic-preferred orientations vary from (010)[100] and (001)[100] patterns in the mylonites to a weak (001)[100] pattern in the some mylonites and ultramylonite, suggesting a change in the deformation mechanism from dislocation creep to grain-size-sensitive creep with increasing intensity of deformation. The chemical composition of matrix plagioclase is generally more sodic than that of porphyroclasts. Secondary amphibole is ubiquitous, consisting mainly of pargasite and magnesiohornblende (brown hornblende) and actinolite (green hornblende). The mineral assemblage is consistent with the hydrothermal metamorphic reaction: clinopyroxene + calcic plagioclase + fluid → amphibole + sodic plagioclase. Compared with deformed gabbroic rocks from the breakaway and termination areas of the Godzilla Megamullion, the samples record ductile shearing under high temperature conditions, possibly related to the development of the Godzilla Megamullion, although hydrothermal activity in the medial area appears to have been less intense than in both the breakaway and termination areas. © 2011 Elsevier B.V.

    DOI: 10.1016/j.lithos.2011.02.001

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  126. Relicts of deformed lithospheric mantle within serpentinites and weathered peridotites from the Godzilla Megamullion, Parece Vela Back-arc Basin, Philippine Sea 査読有り

    Harigane Yumiko, Michibayashi Katsuyoshi, Ohara Yasuhiko

    ISLAND ARC   20 巻 ( 2 ) 頁: 174 - 187   2011年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Island Arc  

    Relicts of deformed lithospheric mantle have been identified within serpentinites and weathered peridotites recovered from nine dredge sites and one submersible dive site from across the Godzilla Megamullion, which was emplaced at the now-extinct Parece Vela Rift in the Parece Vela Basin, a back-arc basin in the Philippine Sea. The serpentinites consist dominantly of lizardite±chrysotile and magnetite with minor relict primary minerals that include pyroxene, spinel, and rare olivine. The weathered peridotites consist of pyroxene, spinel, lizardite±chrysotile, and magnetite as well as weathering products of olivine. These rocks were classified in hand specimen into three types with different structures: massive, foliated, and mylonitic. In thin-section the serpentine minerals show no sign of deformation, whereas relict primary minerals show evidence of plastic deformation such as undulose extinction, kink bands, dynamic recrystallization, and weak to moderate crystallographic preferred orientations. Therefore, the serpentinites and weathered peridotites result from the static replacement and weathering of previously ductile-deformed peridotite. Given their location close to or on the detachment surface that exposed them, the relicts of peridotite provide evidence of deformation in the lithospheric mantle that could be related to the formation and emplacement of the Godzilla Megamullion in the Parece Vela Rift. © 2011 Blackwell Publishing Asia Pty Ltd.

    DOI: 10.1111/j.1440-1738.2011.00759.x

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  127. Direct evidence for upper mantle structure in the NW Pacific Plate: Microstructural analysis of a petit-spot peridotite xenolith 査読有り

    Harigane Yumiko, Mizukami Tomoyuki, Morishita Tomoaki, Michibayashi Katsuyoshi, Abe Natsue, Hirano Naoto

    EARTH AND PLANETARY SCIENCE LETTERS   302 巻 ( 1-2 ) 頁: 194 - 202   2011年2月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Petit-spots, the late Miocene alkali basaltic volcanoes on the Early Cretaceous NW Pacific Plate, originate at the base of the lithosphere. The petit-spot volcanic rocks enclose fragments of tholeiitic basalt, dolerite, gabbro, and mantle peridotite, providing a unique window into the entire section of subducting oceanic lithosphere. We provide here the first direct observations on the deep structure of the Pacific lithosphere using microstructural analyses of a petit-spot peridotite xenolith. The xenolith is a lherzolite that consists mainly of coarse- and medium-grained olivine, orthopyroxene, and clinopyroxene, as well as fine-grained aggregates of spinel and orthopyroxene that probably represent replaced pyrope-rich garnet. A strong deformational fabric is marked by a parallel alignment of millimeter-sized elongate minerals and their crystallographic preferred orientation. The olivine displays a [010] fiber pattern with a girdle of [100] axes and a maximum of [010] perpendicular to the foliation, a pattern which is consistent with a transpressional deformation in high temperature conditions at the base of oceanic lithosphere. Our microstructural observations and seismic data indicate that the lower part of the NW Pacific lithosphere possess an early stage structure of mantle flow at the asthenosphere. This interpretation is compatible with a conventional model in which oceanic lithosphere is thickened during cooling and plate convection. A discrepancy between the weak anisotropy in the petit-spot peridotite and the strong azimuthal anisotropy from the seismic data in the NW Pacific plate implies the existence of a highly anisotropic component in the deep oceanic lithosphere. © 2010 Elsevier B.V.

    DOI: 10.1016/j.epsl.2010.12.011

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  128. Rheological contrast between garnet and clinopyroxene in the mantle wedge: An example from Higashi-akaishi peridotite mass, SW Japan 査読有り

    Muramoto Masashi, Michibayashi Katsuyoshi, Ando Jun-ichi, Kagi Hiroyuki

    PHYSICS OF THE EARTH AND PLANETARY INTERIORS   184 巻 ( 1-2 ) 頁: 14 - 33   2011年1月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Physics of the Earth and Planetary Interiors  

    Garnet clinopyroxenites occur within foliated dunite in the Higashi-akaishi peridotite mass, located within the subduction-type high-pressure/low-temperature Sanbagawa metamorphic belt. The garnet clinopyroxenites contain 3-80% garnet, and garnet and clinopyroxene are homogeneously distributed. Garnet crystals contain extensive, regular dislocation arrays and dislocation networks, suggesting that dislocation creep was the dominant deformation mechanism. Analyses of crystallographic orientation maps indicate similar grain sizes and aspect ratios for garnet and clinopyroxene, regardless of modal composition, indicating that these minerals deformed with similar degree of plasticity. Moreover, indexes of crystallographic fabric intensity (i.e., J-index and M-index) for both garnet and clinopyroxene tend to increase with increasing modal composition of garnet. Fourier-transform infrared spectroscopy analysis revealed that water content in garnet is ∼60. ppm, whereas that in clinopyroxene is ∼70. ppm. Olivine crystal-preferred orientations in the Higashi-akaishi peridotite mass, characterized by [0. 0. 1] (0. 1. 0), are thought to have developed during deformation under wet conditions. Consequently, we argue that the presence of water could act to enhance garnet plasticity during deformation. The results reveal contrasting influences of water on the deformation of garnet and diopside: under wet conditions compared with dry, the strain rate increases by two orders of magnitude for garnet but by an order of magnitude for diopside. Given the influence of water on the creep strength of garnet, garnet within the Higashi-akaishi mass may have become significantly as weak as clinopyroxene during deformation. © 2010 Elsevier B.V.

    DOI: 10.1016/j.pepi.2010.10.008

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  129. Seismic velocity in antigorite-bearing serpentinite mylonites 査読有り

    Watanabe Tohru, Shirasugi Yuhto, Yano Hideaki, Michibayashi Katsuyoshi

    DEFORMATION MECHANISMS, RHEOLOGY AND TECTONICS: MICROSTRUCTURES, MECHANICS AND ANISOTROPY   360 巻 ( 1 ) 頁: 97 - 112   2011年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geological Society Special Publication  

    The relationships between elastic wave velocities and petrofabrics were studied in two antigorite-bearing serpentinite mylonites. Rock samples with antigorite content of 37 and 80 vol% were collected from the Happo ultramafic complex, Central Japan. Compressional and shear-wave velocities were measured by the pulse transmission technique at room temperature and confining pressures of up to 180 MPa. Petrofabrics were examined by optical microscopy and scanning electron microscopy with electron backscattered diffraction (SEM-EBSD). Olivine a- and c-axes are weakly oriented perpendicular to the foliation and parallel to the lineation, respectively. Antigorite b- and c-axes are distinctly oriented parallel to the lineation and perpendicular to the foliation, respectively. Both samples show strong anisotropy of velocity. The compressional wave velocity is fastest in the direction parallel to the lineation, and slowest in the direction perpendicular to the foliation. The shear wave oscillating parallel to the foliation has higher velocity than that oscillating perpendicular to the foliation. As the antigorite content increases, the mean velocity decreases but both azimuthal and polarization anisotropies are enhanced. Measured velocities were compared with velocities calculated from petrofabric data by using Voigt, Reuss and Voight-Reuss-Hill (VRH) averaging schemes. All averaging schemes show velocity anisotropy qualitatively similar to measurements. There are large velocity differences between Voigt and Reuss averages (0.7-1.0 km/s), reflecting the strong elastic anisotropy of antigorite. Measured velocities are found between Reuss and VRH averages. We suggest that the relatively low velocity is due to the platy shape of antigorite grains, the well-developed shape fabric and their strong elastic anisotropy. The configuration of grains should be an important factor for calculating seismic velocities in an aggregate composed of strongly anisotropic materials, such as sheet silicates. © The Geological Society of London 2011.

    DOI: 10.1144/SP360.6

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  130. 世界最深の海洋底かんらん岩,トンガ海溝かんらん岩の構造岩石学的研究 査読有り

    新海 優里, 道林 克禎, 上原 茂樹, 石井 輝秋

    日本地質学会学術大会講演要旨   2011 巻 ( 0 ) 頁: 154-154 - 154   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2011.0.154.0

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  131. マリアナ海溝南部カンラン岩の岩石学的特徴と構造 査読有り

    道林 克禎, 上原 茂樹, 小原 泰彦, 石井 輝秋

    日本地質学会学術大会講演要旨   2011 巻 ( 0 ) 頁: 153-153 - 153   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2011.0.153.0

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  132. フィリピン海パレスベラ海盆のゴジラムリオンから採取されたはんれい岩に含まれる角閃石の地球化学的特徴 査読有り

    針金 由美子, 森下 知晃, Snow Jonathan, 田村 明弘, 道林 克禎, 小原 泰彦, 荒井 章司

    日本鉱物科学会年会講演要旨集   2011 巻 ( 0 ) 頁: 56-56 - 56   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人日本鉱物科学会  

    白鳳丸KH07-2航海において採取されたフィリピン海パレスベラ海盆のゴジラメガムリオン中央部(KH07-02-D18地点)から採取されたはんれい岩を用いて、はんれい岩に含まれる熱水変成作用で形成した角閃石の変形微細構造と微量元素組成から考察される流体の特徴について述べる。

    DOI: 10.14824/jakoka.2011.0.56.0

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  133. Water content of the mantle xenoliths from Kimberley and implications for explaining textural variations in cratonic roots 査読有り

    Katayama Ikuo, Michibayashi Katsuyoshi, Terao Ryuji, Ando Jun-Ichi, Komiya Tsuyoshi

    GEOLOGICAL JOURNAL   46 巻 ( 2-3 ) 頁: 173 - 182   2011年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geological Journal  

    Water contents estimates based on infrared spectroscopy and deformation microstructures are used to constrain the origin of textural variations observed in mantle xenoliths from Kimberley, South Africa. Infrared spectra indicate water contents of 10-370ppm (H2O by weight) in olivine, 20-370ppm in orthopyroxene, up to 340ppm in garnet and 30-550ppm in clinopyroxene, although no systematic differences are detected among texturally distinct xenoliths (i.e. granular and sheared peridotites). In contrast, active slip systems in olivine, as inferred from tilt boundaries, are different between the granular and sheared peridotites; the former deformed via the [100](010) slip system, which is commonly active under hot, dry conditions, whereas the latter deformed via the [001](100) slip system, which is commonly activated in water-rich environments. The discrepancy in water contents estimates based on infrared spectroscopy and deformation microstructures may reflect different stages of the evolution of water content: the present water contents, as analysed by infrared spectroscopy, may have been modified by the most recent events (e.g. eruption by kimberlite magma), whereas the water contents inferred from tilt boundaries may have resulted from the various deformation processes in the deep cratonic mantle. Accordingly, we suggest that the observed heterogeneity in water content within cratonic roots facilitates local deformation, and gives rise to the range of textures seen in cratonic mantle xenoliths. © 2010 John Wiley & Sons, Ltd..

    DOI: 10.1002/gj.1216

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  134. 夜久野オフィオライト待ちの山岩体蛇紋岩の微細構造発達 査読有り

    小森 直昭, 道林 克禎

    日本地質学会学術大会講演要旨   2011 巻 ( 0 ) 頁: 190-190 - 190   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2011.0.190.0

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  135. 領家変成帯から見出される拡散クリープ-転位クリープ遷移とその条件 査読有り

    宮崎 智美, 奥平 敬元, 篠田 圭司, 佐津川 貴子, 道林 克禎

    日本地質学会学術大会講演要旨   2011 巻 ( 0 ) 頁: 202-202 - 202   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2011.0.202.0

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  136. 海洋地殻地震波構造の解釈 ~フィリピン海ゴジラメガムリオンを例として~ 査読有り

    道林 克禎, 針金 由美子, 小原 泰彦

    日本鉱物科学会年会講演要旨集   2011 巻 ( 0 ) 頁: 118-118 - 118   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人日本鉱物科学会  

    本研究では,ゴジラメガムリオンで採取されたハンレイ岩の地震波特性を明らかにして,ゴジラメガムリオンのP波速度構造断面の解釈を試みた.はじめに針金ほかの研究(Harigane et al., 2008, Tectonophysics; 2010, Island Arc; 2011, Lithos)によって解析されたハンレイ岩の斜長石・単斜輝石・角閃石それぞれの結晶方位定向配列の結果を用いて,それぞれの鉱物の地震波特性を計算した.この計算結果を基にして,さらに斜長石50%単斜輝石50%のモード組成をもつハンレイ岩(pl50cpx50)と斜長石50%角閃石50%のモード組成をもつ角閃岩(pl50amp50)として地震波特性を計算した.この結果をゴジラメガムリオンのP波速度構造断面に適用したところ,深部に向かって次第にハンレイ岩が角閃岩に変化する(次第に海洋地殻下部が含水化している)と解釈された.

    DOI: 10.14824/jakoka.2011.0.118.0

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  137. 沈み込み帯前弧ウェッジマントルにおけるAntigorite CPOパターン ー三波川変成帯 東赤石岩体の例ー 査読有り

    西井 彩, ウォリス サイモン, 水上 知行, 道林 克禎

    日本地質学会学術大会講演要旨   2011 巻 ( 0 ) 頁: 416-416 - 416   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2011.0.416.0

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  138. 大陸リフト帯におけるマントル構造発達過程:Kilbourne Holeかんらん岩捕獲岩の微細構造解析と地震波特性 査読有り

    佐津川 貴子, 道林 克禎, アンソニー エリザベス, スターン ロバート, ガオ ステファン, リュウ ケリー

    日本地質学会学術大会講演要旨   2011 巻 ( 0 ) 頁: 191-191 - 191   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2011.0.191.0

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  139. 非対称性背弧拡大時における海洋下部地殻のレオロジー 査読有り

    道林 克禎, 針金 由美子, 小原 泰彦

    日本鉱物科学会年会講演要旨集   2011 巻 ( 0 ) 頁: 39-39 - 39   2011年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人日本鉱物科学会  

    本研究では,フィリピン海ゴジラメガムリオンで採取されたハンレイ岩のマイロナイトとウルトラマイロナイトの微細構造発達過程を,斜長石の流動則から明らかにした.流動則は,粒径と温度条件を微細構造解析から求め,歪速度をゴジラメガムリオンの拡大速度を元にして計算した.その結果,10E-9/sから10E-10/sの速い歪速度下で転位クリープから拡散クリープに変化したことが推定され,デタッチメント断層は超塑性流動したことが考察された.

    DOI: 10.14824/jakoka.2011.0.39.0

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  140. Amphibolitization within the lower crust in the termination area of the Godzilla Megamullion, an oceanic core complex in the Parece Vela Basin 査読有り

    Harigane Yumiko, Michibayashi Katsuyoshi, Ohara Yasuhiko

    ISLAND ARC   19 巻 ( 4 ) 頁: 718 - 730   2010年12月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Island Arc  

    Gabbroic rocks and amphibolites were collected from the KR03-01-D10 dredge site located on the West Arm Rise of the Godzilla Megamullion, close to the Parece Vela Rift which appears to correspond to the termination area of a detachment fault, the Philippine Sea. The gabbroic rocks and amphibolites reveal the occurrence of a high hydrothermal activity in the lower crust close to a paleo-ridge. In the gabbroic rocks, plagioclase compositions of both porphyroclasts and matrix were transformed into sodium-rich compositions close to albite. Amphiboles are of secondary rather than igneous origin based on their microstructural occurrences. In the amphibolites, anorthite contents of porphyroclasts and matrix plagioclase are relatively lower than those of the gabbroic rocks, whereas the chemical compositions of amphibole within the amphibolites are similar to those of amphibole within the gabbroic rocks. Amphibolites represent the product of retrograde metamorphism associated with hydrothermal alteration of the gabbroic body by the reaction: clinopyroxene + calcic plagioclase + fluid → amphibole + sodic plagioclase. The estimated temperatures of the amphibolites derived from the amphibole thermobarometer and the gabbroic rocks derived from the hornblende-plagioclase geothermometer show ~700-950°C and 650-840°C, respectively. The hydrothermal alteration recorded in the gabbroic rocks possibly occurred under high-T conditions; the rocks were then metamorphosed to the amphibolites during a retrogressive stage. Our study indicates that amphibolitization took place with various degrees of deformation. It may imply that the hydrothermal activity increased as the Godzilla Megamullion developed as an oceanic core complex in the paleo-ridge. © 2010 Blackwell Publishing Asia Pty Ltd.

    DOI: 10.1111/j.1440-1738.2010.00741.x

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  141. Uppermost mantle anisotropy beneath the southern Laurentian margin: Evidence from Knippa peridotite xenoliths, Texas 査読有り

    Satsukawa Takako, Michibayashi Katsuyoshi, Raye Urmidola, Anthony Elizabeth Y., Pulliam Jay, Stern Robert

    GEOPHYSICAL RESEARCH LETTERS   37 巻 ( 20 )   2010年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geophysical Research Letters  

    Peridotite xenoliths from southern Texas consist of spinel lherzolite, harzburgite and minor dunite. Based on phase relations and temperature of equilibration, Knippa xenoliths come from the uppermost mantle, 40-70 km deep. Knippa xenoliths provide rare snapshots of upper mantle processes and compositions beneath south-central Laurentia. They preserve olivine a-axis fiber fabrics with a strong concentration of [100] and girdles of [010] and [001]. Assuming a lithospheric mantle having a horizontal flow direction parallel to fast directions, the mantle lithospheric fabric revealed by the xenoliths mostly explains the magnitude of observed shear-wave splitting observed along the southern margin of the Laurentian craton. © 2010 by the American Geophysical Union.

    DOI: 10.1029/2010GL044538

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  142. Spatial variations in antigorite fabric across a serpentinite subduction channel: Insights from the Ohmachi Seamount, Izu-Bonin frontal arc 査読有り

    Hirauchi Ken-ichi, Michibayashi Katsuyoshi, Ueda Hayato, Katayama Ikuo

    EARTH AND PLANETARY SCIENCE LETTERS   299 巻 ( 1-2 ) 頁: 196 - 206   2010年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    We conducted a microstructural study of samples from a natural serpentinite shear zone in the Ohmachi Seamount, Izu-Bonin frontal arc. The serpentinite samples consist mainly of columnar antigorite grains that show marked variations in texture from two approximately orthogonal sets of grains (interpenetrating) to aligned (schistose) forms. Because the two types of grains have similar compositions, these textural differences are interpreted to reflect the existence of a strain gradient toward a plate interface in a subduction zone. The crystal-preferred orientation (CPO) of antigorite with interpenetrating texture is almost randomly oriented, whereas in the case of schistose texture the CPO shows a typical [010](001) pattern. We also found that with increasing intensity of schistosity, the polarization plane of Vs1 for antigorite grains becomes aligned parallel to the flow plane, consistent with a plane oriented normal to the maximum concentration of slow antigorite c-axes. This configuration results in seismic anisotropy that is approximately five times higher than that for olivine grains. These findings indicate that if a serpentinite layer on the plate interface attains large bulk shear strains (γ>~2), the resultant alignment of antigorite grains within the layer strongly influences the orientation and magnitude of seismic anisotropy in the mantle wedge, depending on the dip angle of the subducting slab. © 2010 Elsevier B.V.

    DOI: 10.1016/j.epsl.2010.08.035

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  143. Grain-size-sensitive deformation of upper greenschist- to lower amphibolite-facies metacherts from a low-P/high-T metamorphic belt 査読有り

    Okudaira Takamoto, Ogawa Daisuke, Michibayashi Katsuyoshi

    TECTONOPHYSICS   492 巻 ( 1-4 ) 頁: 141 - 149   2010年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    To identify the dominant deformation mechanism in continental middle crust at an arc-trench system, we used an SEM-EBSD system to measure the lattice-preferred orientations of quartz grains in fine-grained metachert from the low-grade (chlorite and chlorite-biotite zones) part of the low-P/high-T Ryoke metamorphic belt, SW Japan. Quartz c-axis fabrics show no distinct patterns related to dislocation creep, although the strain magnitudes estimated based on deformed radiolarian fossils are high enough that a distinct fabric might be expected to have formed during deformation. Fabric intensities are very low, indicating a random distribution of quartz c-axes. Quartz grains are equant in shape and polygonal, and free of intracrystalline plasticity. These observations suggest that the dominant deformation mechanism in the metacherts was grain-size-sensitive flow (diffusion creep accompanied by grain-boundary sliding) rather than dislocation creep, possibly reflecting the relatively low strain rate or low flow stress compared with that in high-strain zones. The development of grain-size-sensitive flow in metamorphic tectonites at mid-crustal conditions would result in a significant decrease of the rocks strength of the continental middle crust. © 2010 Elsevier B.V.

    DOI: 10.1016/j.tecto.2010.06.002

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  144. Effect of grain growth on cation exchange between dunite and fluid: implications for chemical homogenization in the upper mantle 査読有り

    Ohuchi Tomohiro, Nakamura Michihiko, Michibayashi Katsuyoshi

    CONTRIBUTIONS TO MINERALOGY AND PETROLOGY   160 巻 ( 3 ) 頁: 339 - 357   2010年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Contributions to Mineralogy and Petrology  

    The effect of grain growth on the cation exchange between synthesized forsterite aggregates (i. e., dunite) and nickel-rich aqueous fluid was evaluated experimentally at 1. 2 GPa and 1,200°C. The grain boundary (GB) migration caused nickel enrichment in the area swept by the GBs in a fashion similar to that reported for stable isotope exchange in the quartz aggregates. The progress of the grain growth resulted in an increase in the average nickel concentration in the dunites of up to ~80 times that was calculated for a system having stationary GBs. The overall diffusivity of the nickel along the wet GBs and interconnected fluid networks was found to be 6.5 × 10-19-6.7 × 10-18 m3/s, which is 4-5 orders of magnitude higher than the grain boundary diffusivity in the dry dunite. These results show that the grain growth rate is a fundamental factor in the evaluation of the time scale of chemical homogenization in the upper mantle. © 2010 Springer-Verlag.

    DOI: 10.1007/s00410-009-0481-7

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  145. 0.5GPa,800°Cにおけるメノウ中の石英多結晶体の結晶成長実験 査読有り

    井元 恒, 道林 克禎

    静岡大学地球科学研究報告   37 巻 ( 0 ) 頁: 13 - 19   2010年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:国立大学法人 静岡大学理学部地球科学教室  

    DOI: 10.51053/shizuoka.37.0_13

    CiNii Research

  146. 1GPa,800°Cにおけるフリント中の石英多結晶体の結晶成長実験 査読有り

    植田 直彦, 道林 克禎

    静岡大学地球科学研究報告   37 巻 ( 0 ) 頁: 21 - 26   2010年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:国立大学法人 静岡大学理学部地球科学教室  

    DOI: 10.51053/shizuoka.37.0_21

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  147. 深海底から採取した蛇紋岩の弾性波速度測定:予察 査読有り

    新海 優里, 渡辺 了, 道林 克禎, 針金 由美子, 小原 泰彦

    静岡大学地球科学研究報告   37 巻 ( 0 ) 頁: 27 - 34   2010年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:国立大学法人 静岡大学理学部地球科学教室  

    DOI: 10.51053/shizuoka.37.0_27

    CiNii Research

  148. Preliminary results of elastic wave velocity measurements on a serpentinite obtained from the deep-sea floor 査読有り

    Shinkai Y

    Geoscience Reports of the Shizuoka University   37 巻 ( 37 ) 頁: 27-34 - 34   2010年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡大学地球科学教室  

    DOI: 10.14945/00005290

  149. Grain growth experiments of quartz aggregates in agate under 1 GPa and 800°C 査読有り

    Imoto H

    Geoscience Reports of the Shizuoka University   ( 37 ) 頁: 13-19   2010年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  150. Preliminary results of elastic wave velocity measurements on a serpentinite obtained from the deep-sea floor 査読有り

    Shinkai Y

    Geoscience Reports of the Shizuoka University   ( 37 ) 頁: 27-34   2010年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  151. Grain growth experiments of quartz aggregates in flint under 1 GPa and 800°C 査読有り

    Ueta N

    Geoscience Reports of the Shizuoka University   ( 37 ) 頁: 21-26   2010年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  152. 0.5GPa、800℃におけるメノウ中の石英多結晶体の結晶成長実験 査読有り

    井元 恒, 道林 克禎

    静岡大学地球科学研究報告   37 巻 ( 37 ) 頁: 13-19 - 19   2010年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡大学地球科学教室  

    DOI: 10.14945/00005288

  153. 1GPa、800℃におけるフリント中の石英多結晶体の結晶成長実験 査読有り

    植田 直彦, 道林 克禎

    静岡大学地球科学研究報告   37 巻 ( 37 ) 頁: 21-26 - 26   2010年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡大学地球科学教室  

    DOI: 10.14945/00005289

  154. Grain growth experiments of quartz aggregates in agate under 1 GPa and 800°C 査読有り

    Imoto H., Michibayashi K.

    Geoscience Reports of the Shizuoka University   ( 37 ) 頁: 13 - 19   2010年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geoscience Reports of the Shizuoka University  

    We investigated grain growth process of quartz aggregates in agate. The agate samples were annealed in a piston-cylinder solid medium apparatus (MK65S) of Shizuoka University. The experiments were performed at temperature of 800°C, confining pressure of 0.5 GPa for 0.5 hr, 24 hr and 66 hr, respectively. The agates were well crystallized during experiments. Mean grain sizes increased from a few to ten microns with increasing time. Aspect ratios were nearly constant at around 0.7 (b/a; b < a). Shape preferred orientation (SPO) of quartz grains were developed with increasing time. Crystal-preferred orientation of c-axes, which were primarily girdled, appears to control the development of SPO with time.

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  155. Preliminary results of elastic wave velocity measurements on a serpentinite obtained from the deep-sea floor 査読有り

    Shinkai Y., Watanabe T., Michibayashi K., Harigane Y., Ohara Y.

    Geoscience Reports of the Shizuoka University   ( 37 ) 頁: 27 - 34   2010年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geoscience Reports of the Shizuoka University  

    Elastic wave velocities were measured on a deep seafloor serpentinite sample at room temperature and confining pressures of up to 180 MPa, using a high-pressure apparatus at University of Toyama. The sample was collected from a dredge site D17 at the Godzilla Megamullion, Parece Vela Rift, Phillipine Sea during the cruise KR07-02 (R/V Kairei). The serpentinite sample has the density of 2.37 g/cm3 and consists mainly of lizardite, chrysotile and magnetite, showing a banded structure with a moderately developed lineation and foliation. Mutually orthogonal axes were set for velocity measurements; the x-axis is parallel to the lineation, and the z-axis normal to the foliation. Lizardite mainly has a mesh texture, whereas fibrous chrysotile fills veins, most of which are subperpendicular to the lineation. The compressional wave velocity at 180 MPa is the fastest (4.56 km/s) in the y-axis direction, the slowest (3.97 km) in the direction parallel to the lineation (x-axis direction), and intermediate (4.25 km/s) normal to the foliation (z-axis direction). The azimuthal anisotropy is 13.85 % at 180 MPa. The shear wave velocity at 180 MPa is 2.07-2.35 km/s. The shear waves oscillating parallel to the yz-plane have the fastest velocity, and that normal to the yz-plane the slowest. The polarization anisotropy is thus strong along the y-(9.35%) and z-(12.24%) axes, whereas weak along the xaxis (1.39%). Based on microstructural examinations, observed velocity anisotropy may be mainly controlled by the orientation of chrysotile veins rather than the banded structure.

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  156. Grain growth experiments of quartz aggregates in flint under 1 GPa and 800°C 査読有り

    Ueta N., Michibayashi K.

    Geoscience Reports of the Shizuoka University   ( 37 ) 頁: 21 - 26   2010年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geoscience Reports of the Shizuoka University  

    We investigated grain growth process of quartz aggregates in flint. The agate samples were annealed in a piston-cylinder solid medium apparatus (MK65S) of Shizuoka University. The experiments were performed at temperature of 800°C, confining pressure of 1 GPa for 8 hr, 12 hr and 36 hr, respectively. The flints were well crystallized during experiments. Mean grain sizes increased from 1 to 5 μm with increasing time. Aspect ratios were nearly constant at around 0.7 (b/a; b < a). Neither shape preferred orientation nor crystal-preferred orientation of quartz grains occurred with increasing time. Comparing with grain growth experiments for agate in previous studies, the grain growth rate of quartz in flint was faster than that of quartz in agate.

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  157. Exsolution of dolomite and application of calcite-dolomite solvus geothermometry in high-grade marbles: an example from Skallevikshalsen, East Antarctica 査読有り

    Mizuochi H., Satish-Kumar M., Motoyoshi Y., Michibayashi K.

    JOURNAL OF METAMORPHIC GEOLOGY   28 巻 ( 5 ) 頁: 509 - 526   2010年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Metamorphic Geology  

    Calcite-dolomite solvus geothermometry is a versatile method for the estimation of metamorphic temperature because of its simplicity. However, in medium- to high-grade metamorphic rocks the accuracy of estimating temperature by the integration of unmixed dolomite and calcite is hampered by the heterogeneous distribution of unmixed dolomite, difficulties in distinguishing between preexisting and exsolved dolomite and demarcating grain boundaries. In this study, it is shown that calcite-dolomite solvus thermometry can be applied to calcite inclusions in forsterite and spinel for the estimation of peak metamorphic temperature in granulite facies marbles from Skallevikshalsen, East Antarctica. The marbles are comprised of a granoblastic mineral assemblage of calcite + dolomite + forsterite + diopside + spinel + phlogopite ± apatite, characteristic of granulite facies metamorphic conditions. Forsterite, spinel and apatite frequently contain 'negative crystal' inclusions of carbonates that display homogeneously distributed dolomite lamellae. On the basis of narrow ranges of temperature (850-870 °C) recorded from carbonate inclusions compared with the range from matrix carbonate it is regarded that the inclusion carbonates represent a closed system. Furthermore, this estimate is consistent with dolomite-graphite carbon isotope geothermometry, and is considered to be the best estimate of peak metamorphic temperature for this region. Matrix calcite records different stages of retrograde metamorphism and re-equilibration of calcite that continued until Mg diffusion ceased at ∼460 °C. Electron backscattered diffraction (EBSD) results together with morphological features of unmixed coarse tabular dolomite suggest anisotropic diffusion and mineral growth are influenced by crystallographic orientation. Identification of sub-grain boundaries and formation of fine-grained unmixing in calcite rims suggest the presence of grain boundary fluids in the late retrograde stages of metamorphic evolution. These results, thus, demonstrate the usefulness of carbonate inclusion geothermometry in estimating the peak metamorphic temperatures of high-grade terranes and the application of EBSD in understanding the unmixing behaviour of minerals with solid solutions. © 2010 Blackwell Publishing Ltd.

    DOI: 10.1111/j.1525-1314.2010.00877.x

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  158. Two Contrasting Fabric Patterns of Olivine Observed in Garnet and Spinel Peridotite from a Mantle-derived Ultramafic Mass Enclosed in Felsic Granulite, the Moldanubian Zone, Czech Republic 査読有り

    Kamei Akira, Obata Masaaki, Michibayashi Katsuyoshi, Hirajima Takao, Svojtka Martin

    JOURNAL OF PETROLOGY   51 巻 ( 1-2 ) 頁: 101 - 123   2010年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Petrology  

    The Mohelno peridotite is a medium-sized ultramafic body (2 km×4 km in size) enclosed in the Gföhl granulites in the eastern part of the BohemianMassif. It consists mainly of coarse spinel peridotite (harzburgite and dunite); garnet peridotite occurs only in the sheared and deformed margins of the body. To decipher the origin and history of this mantle-derived peridotite, we determined the mineral chemistry by electron microprobe analysis and olivine fabric patterns by the electron backscattered diffraction method for each rock type.We found two distinct types of olivine fabric (crystal-preferred orientation; CPO) in the peridotite, which can be correlated with the mineralogy and thermal history of each. The olivine CPO in coarse-grained spinel peridotite shows a strong concentration of [100] slightly oblique to the lineation and [010] and [001] girdles normal to the lineation (which is the so-called {0kl}[100] pattern typical of medium-temperature deformation). Olivine in coarse-grained garnet peridotite, on the other hand, shows a strong concentration of [010] normal to the foliation and a concentration of [100] parallel to the lineation (which is the so-called (010)[100] pattern typical of high-temperature deformation). These fabric patterns become diffuse as the grain size is reduced for each mineralogical type.We interpret the development of these contrasting fabric patterns and mineralogical types based on the pressure-temperature history of each rock type determined by applying published geothermometers and geobarometers to the constituent minerals. Starting from a high-temperature (>1200°C) spinel peridotite, during exhumation and cooling in contact with surrounding granulites, the marginal part of the body was transformed to garnet peridotite, whereas the interior remained in the spinel-peridotite facies because cooling was slower inside the body. Because of the slow cooling and continuous deformation in the interior of the body, the original high-temperature fabric pattern in the spinel peridotite was converted to a lower-temperature type.The high-temperature fabric was preserved only at the margin of the body where cooling was more rapid. Reduction of grain size that occurred during later, low-temperature, deformation partly obliterated the high-temperature fabric patterns for both garnet and spinel peridotites. The initial rapid cooling at high temperatures associated with deformation probably occurred after the mantle peridotite was emplaced within the crustal granulites, which implies that the spinel- to garnet-peridotite transformation took place in the continental crust. © The Author 2010. Published by Oxford University Press.

    DOI: 10.1093/petrology/egp092

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  159. 中部地殻条件下におけるカリ長石のレオロジー 査読有り

    福田 惇一, 奥平 敬元, 佐津川 貴子, 道林 克禎

    日本地質学会学術大会講演要旨   2010 巻 ( 0 ) 頁: 446-446 - 446   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2010.0.446.0

    CiNii Research

  160. トンガ海溝深部陸側斜面から採取されたマントル最上部由来の岩石の構造岩石学的研究 査読有り

    新海 優里, 道林 克禎, 石井 輝秋

    日本地質学会学術大会講演要旨   2010 巻 ( 0 ) 頁: 280-280 - 280   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2010.0.280.0

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  161. 南部ローレンシア大陸最上部マントルの異方性:テキサス州Knippaかんらん岩捕獲岩からの証拠 査読有り

    佐津川 貴子, 道林 克禎, Raye Urmidola, Anthony Elizabeth, Pulliam Jay, Stern Robert

    日本地質学会学術大会講演要旨   2010 巻 ( 0 ) 頁: 279-279 - 279   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2010.0.279.0

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  162. 領家変成帯から見出される拡散クリープ-転位クリープ遷移 査読有り

    宮崎 智美, 奥平 敬元, 小川 大介, 佐津川 貴子, 道林 克禎

    日本地質学会学術大会講演要旨   2010 巻 ( 0 ) 頁: 517-517 - 517   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2010.0.517.0

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  163. 熊澤型試験機による高温高圧変形実験:含水石英岩のレオロジー解明にむけて 査読有り

    清水 以知子, 渡邉 悠太, 道林 克禎

    日本地質学会学術大会講演要旨   2010 巻 ( 0 ) 頁: 197-197 - 197   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2010.0.197.0

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  164. lGPa, 800℃におけるフリント中の石英多結晶体の結晶成長実験 査読有り

    道林 克禎

    静岡大学地球科学研究報告   37 巻   頁: 21 - 26   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  165. ゴジラムリオンの構造発達~かんらん岩の変形微細構造と蛇紋岩化作用~ 査読有り

    道林 克禎

    地球   32 巻   頁: 196 - 200   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  166. lGPa, 800℃におけるメノウ中の石英多結晶体の結晶成長実験 査読有り

    道林 克禎

    静岡大学地球科学研究報告   37 巻   頁: 13 - 19   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  167. 夜久野オフィオライト待ちの山超マフィック岩体の微細構造発達と蛇紋岩化プロセス 査読有り

    道林 克禎

    地球   32 巻   頁: 184 - 188   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  168. 深海底から採取した蛇紋岩の弾性波速度測定:予察 査読有り

    渡辺 了, 道林 克禎

    静岡大学地球科学研究報告   37 巻   頁: 27 - 34   2010年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  169. Trench-parallel anisotropy produced by serpentine deformation in the hydrated mantle wedge 査読有り

    Katayama Ikuo, Hirauchi Ken-ichi, Michibayashi Katsuyoshi, Ando Jun-ichi

    NATURE   461 巻 ( 7267 ) 頁: 1114-U209   2009年10月

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    記述言語:英語  

    DOI: 10.1038/nature08513

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  170. Rock seismic anisotropy of the low-velocity zone beneath the volcanic front in the mantle wedge 査読有り

    Michibayashi Katsuyoshi, Oohara Tatsuya, Satsukawa Takako, Ishimaru Satoko, Arai Shoji, Okrugin Victor M.

    GEOPHYSICAL RESEARCH LETTERS   36 巻 ( 12 )   2009年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geophysical Research Letters  

    Peridotite xenoliths derived from the low velocity zone beneath the Avacha frontal volcano, Kamchatka, preserve a-axis slip fabrics, comparable with those in xenoliths from the back-arc region of the NE Japan. Although low-velocity zones are commonly attributed to zones of partially melted mantle, migration of the melt does not erase the existing olivine fabrics and related Scismic anisotropics. These anisotropics may counteract the anisotropics associated with c-axis slip fabrics, if they exist, along the slab or in the high-pressure zone. Copyright 2009 by the American Geophysical Union.

    DOI: 10.1029/2009GL038527

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  171. Peridotites from a ductile shear zone within back-arc lithospheric mantle, southern Mariana Trench: Results of a Shinkai 6500 dive 査読有り

    Michibayashi K., Ohara Y., Stern R. J., Fryer P., Kimura J. -I., Tasaka M., Ishii T.

    GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS   10 巻 ( 5 )   2009年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geochemistry, Geophysics, Geosystems  

    [1] Two N-S fault zones in the southern Mariana fore arc record at least 20 km of left-lateral displacement. We examined the eastward facing slope of one of the fault zones (the West Santa Rosa Bank fault) from 6469 to 5957 m water depth using the submersible Shinkai 6500 (YK06-12 Dive 973) as part of a cruise by the R/V Yokosuka in 2006. The dive recovered residual but still partly fertile lherzolite, residual lherzolite, and dunite; the samples show mylonitic, porphyroclastic, and coarse, moderately deformed secondary textures. Crystal-preferred orientations of olivine within the peridotites show a typical [100](010) pattern, with the fabric intensity decreasing from rocks with coarse secondary texture to mylonites. The sampled peridotites therefore represent a ductile shear zone within the lithospheric mantle of the overriding plate. Peridotites were probably exposed in association with a tear in the subducting slab, previously inferred from bathymetry and seismicity. Furthermore, although the dive site is located in the fore arc close to the Mariana Trench, spinel compositions within the sampled peridotites are comparable to those from the Mariana Trough back arc, suggesting that back-arc basin mantle is exposed along the West Santa Rosa Bank fault. © 2009 by the American Geophysical Union.

    DOI: 10.1029/2008GC002197

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  172. P- and S-wave velocities of the lowermost crustal rocks from the Kohistan arc: Implications for seismic Moho discontinuity attributed to abundant garnet 査読有り

    Kono Yoshio, Ishikawa Masahiro, Harigane Yumiko, Michibayashi Katsuyoshi, Arima Makoto

    TECTONOPHYSICS   467 巻 ( 1-4 ) 頁: 44 - 54   2009年3月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    P- (Vp) and S-wave (Vs) velocities of garnet-free (two-pyroxene granulite) and garnet-bearing (garnet granulite and garnet pyroxenite) lowermost crustal rocks collected from the Kohistan arc, northern Pakistan, were measured at 0.1-1.0 GPa and 25-400 °C. Garnet granulite had higher Vp (+ 0.31 km/s) and Vs (+ 0.27 km/s) than two-pyroxene granulite. Although Vp and Vs increased with increasing volume percent of garnet, plagioclase-free garnet pyroxenite showed significantly higher Vp and Vs than plagioclase-rich garnet granulite mainly due to the low Vp and Vs of plagioclase. In contrast, we observed two quasi-linear relationships between Vp (Vs) and SiO2 content for the garnet-bearing and garnet-free rocks. The garnet-bearing rocks had relatively higher Vp and Vs and stronger SiO2 dependences than the garnet-free rocks. The stronger SiO2 dependences of Vp and Vs in the garnet-bearing rocks suggest that the garnet formation in mafic to ultramafic rocks (e.g., pyroxenite and hornblendite), having relatively lower SiO2, leads to more pronounced increases in Vp and Vs than that of relatively felsic rocks (e.g., felsic-to-mafic granulite). Indeed, the Vp and Vs of the garnet pyroxenite were significantly higher than those of garnet granulite but comparable to those of dunite. The significantly high Vp and Vs of the garnet pyroxenite yielded high reflection coefficients between the garnet granulite and garnet pyroxenite of up to 0.13 for P-waves and 0.14 for S-waves, comparable to values expected for Moho reflection. Thus the lithological boundary between plagioclase-rich garnet granulite and plagioclase-free garnet pyroxenite in the lowermost crust of the Kohistan arc corresponds to the seismic Moho discontinuity. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tecto.2008.12.010

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  173. ゴジラムリオンの発生とパレスベラ背弧海盆の進化 査読有り

    針金 由美子, 道林 克禎, 小原 泰彦

    日本地質学会学術大会講演要旨   2009 巻 ( 0 ) 頁: 107-107 - 107   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2009.0.107.0

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  174. 北アメリカ南西部Knippa及びKilbourne Holeかんらん岩捕獲岩の構造岩石学的特徴 査読有り

    佐津川 貴子, 道林 克禎, Stern Robert J, Raye Urmidola, Anthony Elizabeth Y

    日本地質学会学術大会講演要旨   2009 巻 ( 0 ) 頁: 511-511 - 511   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2009.0.511.0

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  175. 世界最深の海洋底岩石試料: トンガ海溝かんらん岩 査読有り

    道林 克禎, 上原 茂樹, 新海 優里, 針金 由美子, 石井 輝秋, 沖野 郷子

    日本地質学会学術大会講演要旨   2009 巻 ( 0 ) 頁: 108-108 - 108   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2009.0.108.0

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  176. マリアナ海溝南部陸側斜面のかんらん岩の構造と岩石学的特徴 査読有り

    上原 茂樹, 道林 克禎, 小原 泰彦, 石井 輝秋

    日本地質学会学術大会講演要旨   2009 巻 ( 0 ) 頁: 363-363 - 363   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2009.0.363.0

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  177. マリアナ弧蛇紋岩海山から産出される蛇紋岩化したかんらん岩の構造解析 査読有り

    藤井 彩乃, 道林 克禎, 石井 輝秋

    日本地質学会学術大会講演要旨   2009 巻 ( 0 ) 頁: 364-364 - 364   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2009.0.364.0

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  178. 夜久野オフィオライト待ちの山かんらん岩の微細構造発達 査読有り

    鈴木 慎人, 道林 克禎

    日本地質学会学術大会講演要旨   2009 巻 ( 0 ) 頁: 273-273 - 273   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2009.0.273.0

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  179. 高温高圧実験による石英の結晶成長過程の研究:高温型石英と低温型石英の比較 査読有り

    井元 恒, 道林 克禎

    日本地質学会学術大会講演要旨   2009 巻 ( 0 ) 頁: 513-513 - 513   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2009.0.513.0

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  180. 結晶方位配列と亜結晶粒回転軸によるかんらん石すべり系の推定~秋田県男鹿半島一の目潟火山かんらん岩捕獲岩を例として~ 査読有り

    佐津川 貴子, 道林 克禎

    地質学雑誌   115 巻 ( 6 ) 頁: 288-291 - 291   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    In this study of peridotite xenoliths from Ichinomegata volcano, Oga peninsula, NE Japan, we used electron backscattered diffraction to assess the validity of two methods of identifying the olivine slip system that operated during deformation. The xenoliths are harzburgite in composition and contain a distinct foliation and lineation defined by aligned spinel and pyroxene grains. Using the first method, the dominant slip system in olivine was estimated based on the crystallographic preferred orientation (CPO) of olivine with respect to the foliation and lineation. The second method was based on an analysis of subgrain rotation: given that intracrystalline subgrain boundaries were observed within several olivine grains, we measured the misorientation angles across these boundaries to define sets of slip planes, slip directions, and rotation axes. The olivine slip systems estimated using the two methods are essentially identical. The CPO pattern provides an important constraint on the dominant slip system that operated during deformation, whereas the analysis of subgrain rotation yields the slip system responsible for the development of individual subgrain boundaries composed of edge dislocations. The two methods are therefore complementary.

    DOI: 10.5575/geosoc.115.288

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  181. 火山フロント直下の最上部マントル構造 ~カムチャッカ半島アバチャ火山かんらん岩捕獲岩を例として~ 査読有り

    大原 達也, 道林 克禎

    日本地質学会学術大会講演要旨   2009 巻 ( 0 ) 頁: 272-272 - 272   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2009.0.272.0

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  182. P- and S-wave velocities of the lowermost crustal rocks from the Kohistan arc : Implications for seismic Moho discontinuity attributed to abundant garnet 査読有り

    道林 克禎

    Tectonophysics 467     頁: 44 - 54   2009年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

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  183. Hydration due to high-T brittle failure within in situ oceanic crust, 30 degrees N Mid-Atlantic Ridge 査読有り

    Michibayashi Katsuyoshi, Hirose Takehiro, Nozaka Toshio, Harigane Yumiko, Escartin Javier, Delius Heike, Linek Margaret, Ohara Yasuhiko

    EARTH AND PLANETARY SCIENCE LETTERS   275 巻 ( 3-4 ) 頁: 348 - 354   2008年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Analysis of an in situ fault zone within the Atlantis Massif oceanic core complex (Mid-Atlantic Ridge) provides clues to the relevant deformation mechanisms and their temporal evolution within oceanic crust. IODP EXP304/305 drilled a succession of gabbroic lithologies to a final depth of 1415 m below the sea floor (mbsf), with very high recovery rates of up to 100% (generally ∼ 80%). We identified an intra-crustal fault zone between 720 and 780 mbsf in a section of massive gabbro, olivine gabbro, oxide gabbro units, and minor diabase intrusions. Of particular interest is the section between 744 and 750 mbsf, which unfortunately was marked by low recovery rates (17%). Electrical borehole-wall images show a 1-m-thick zone of east-dipping fractures within this interval, which is otherwise dominated by N-S dipping structures. Despite the high fracture density in this section, the hole walls are smooth, with rare breakouts, suggesting that the low recovery rate was due to a change in lithology rather than well conditions. The recovered rocks include ultracataclasite and possibly incohesive fault gouge that formed in the upper amphibolite regime, with mostly amphibole infill. Logging data suggest that the gabbroic rocks in this interval are rich in hydrous phases, consistent with increased amounts of amphibole found in the core. Equilibration temperature conditions of about 640 °C were obtained for plagioclase clasts and aluminous actinolite, assuming a pressure of 200 MPa. The permeability of the fault zone is in the range of 10- 19 to 10- 17 m2. Although the permeability appears to be high within the fault zone relative to other parts of the section, it is no higher than that in typical lower crustal material. As a consequence, because brittle failure occurred at high temperatures, the fault zone was subsequently completely sealed by hydrous minerals, thereby preventing further fluid circulation and preserving water in the crust. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.epsl.2008.08.033

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  184. Shearing within lower crust during progressive retrogression: Structural analysis of gabbroic rocks from the Godzilla Mullion, an oceanic core complex in the Parece Vela backarc basin 査読有り

    Harigane Yumiko, Michibayashi Katsuyoshi, Ohara Yasuhiko

    TECTONOPHYSICS   457 巻 ( 3-4 ) 頁: 183 - 196   2008年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    Microstructural and petrological analyses of gabbroic rocks sampled from the Godzilla Mullion, located along the Parece Vela Basin spreading ridge (Parece Vela Rift), Philippine Sea, reveal the development of a ductile shear zone in the lower crust. The shear zone is interpreted to represent a detachment fault within an oceanic core complex. Microstructures indicative of intense deformation, characterized by porphyroclastic textures consisting dominantly of coarse plagioclase porphyroclasts and lesser clinopyroxene porphyroclasts in a fine-grained matrix, are observed within samples of gabbroic rocks dredged near the breakaway area of the Godzilla Mullion (dredge site D6). Samples are classified into three types based upon the grain-size of fine-grained plagioclase in the matrix: coarse (80-130 μm), medium (25 μm), and fine (∼ 10 μm). Although the chemical composition of plagioclase porphyroclasts is consistently An 40-50 among all sample types, the compositions of fine grains in the matrix vary with decreasing grain-size, being An 40-50 for the coarse-type, An 30-40 for the medium-type, and An 5-30 for the fine-type. This finding implies that the composition of fine-grained plagioclase in the matrix is related to the following retrograde reaction that occurred during deformation: clinopyroxene + plagioclase + Fe-Ti oxide + fluid → hornblende + plagioclase. Plagioclase crystal-preferred orientations also show a gradual change with grain-size, varying from a (010)[100] pattern for the coarse-type, (010)[100] and (001)[100] patterns for the medium-type, and a weak (001)[100] pattern or random orientations for the fine-type. These patterns are interpreted to result from a change in the deformation mechanism of plagioclase from dislocation creep to grain-size-sensitive creep with decreasing temperature, thereby leading to strain softening and localization during cooling. Although secondary amphibole occurs ubiquitously within all samples, the chemical composition of amphibole varies from pargasitic hornblende (i.e. brown hornblende) to actinolite (i.e. green hornblende) within each of the sample types. However, amphibole in the coarse-type shows no evidence of deformation, whereas brown hornblende in the medium- and fine-types is plastically deformed. As a consequence, we argue that the microstructural development of the gabbroic rocks occurred during uplift-related cooling of the gabbro body and that a primary shear zone developed near the breakaway area at depth under anhydrous conditions at high temperatures above 850 °C; the shear zone subsequently evolved during progressive retrogression in association with hydration of the shear zone, possibly resulting in the development of the detachment fault that gave rise to the Godzilla Mullion. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tecto.2008.06.009

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  185. Undoped ZnO phosphor with high luminescence efficiency grown by thermal oxidation 査読有り

    Xiao Zhiyan, Okada Morihro, Han Gui, Ichimiya Masayoshi, Michibayashi Katsuyoshi, Itoh Tadashi, Neo Yoichiro, Aoki Toru, Mimura Hidenori

    JOURNAL OF APPLIED PHYSICS   104 巻 ( 7 )   2008年10月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Applied Physics  

    Various ZnO morphologies with hexagonal cross sections were fabricated by a thermal oxidation method. Depending on the growth temperature, the lateral lengths of the hexagonal cross section varied from several hundred nanometers to the micrometer order. Comparing the cathodoluminescence (CL) of the synthesized ZnO to that of commercial ZnO:Zn phosphor revealed that a strong luminescence can be realized in undoped ZnO by fabricating one-dimensional structures. Specifically, in the micropyramid and towerlike structures, the CL intensity is locally concentrated near the hexagonal boundary. The enhanced green emission in these structures can be qualitatively explained by whispering gallery resonance modes produced in the hexagonal microcavity. © 2008 American Institute of Physics.

    DOI: 10.1063/1.2990050

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  186. O-190 飛騨外縁帯八方尾根かんらん岩蛇紋岩体の構造解析と地震波特性(24.深成岩及び変成岩,口頭発表,一般講演) 査読有り

    藤井 彩乃, 道林 克禎

    日本地質学会学術大会講演要旨   115 巻   頁: 126   2008年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本地質学会  

    CiNii Research

  187. P-154 カムチャッカ半島アバチャ火山かんらん岩捕獲岩の微細構造解析(24.深成岩及び変成岩,ポスター発表,一般講演) 査読有り

    大原 達也, 道林 克禎

    日本地質学会学術大会講演要旨   115 巻   頁: 248   2008年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本地質学会  

    CiNii Research

  188. O-194 南部マリアナ海溝West Santa Rosa Bank断層で採取された背弧起源かんらん岩(24.深成岩及び変成岩,口頭発表,一般講演) 査読有り

    道林 克禎, 小原 泰彦

    日本地質学会学術大会講演要旨   115 巻   頁: 128   2008年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本地質学会  

    CiNii Research

  189. O-192 四国中央部三波川帯東赤石かんらん岩体の変形微細構造(24.深成岩及び変成岩,口頭発表,一般講演) 査読有り

    村本 政史, 道林 克禎

    日本地質学会学術大会講演要旨   115 巻   頁: 127   2008年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本地質学会  

    CiNii Research

  190. O-191 隠岐島後カンラン岩捕獲岩の微細構造解析(24.深成岩及び変成岩,口頭発表,一般講演) 査読有り

    佐津川 貴子, 道林 克禎

    日本地質学会学術大会講演要旨   115 巻   頁: 126   2008年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本地質学会  

    CiNii Research

  191. B-type olivine fabrics developed in the fore-arc side of the mantle wedge along a subducting slab 査読有り

    Tasaka Miki, Michibayashi Katsuyoshi, Mainprice David

    EARTH AND PLANETARY SCIENCE LETTERS   272 巻 ( 3-4 ) 頁: 747 - 757   2008年8月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    B-type olivine fabrics are pervasive within highly depleted dunites of the small-sized Imono peridotite body located within the subduction-type Sanbagawa metamorphic belt of the southwest Japan arc. The dunites contain various microstructures, ranging from porphyroclastic to fine-grained intensely sheared textures. The Mg/(Mg + Fe) atomic ratios (Fo number) of olivine within these dunites are consistently around 0.9, as are the Cr/(Cr + Al) atomic ratios (Cr number) of chromian spinel, suggesting their evolution from a highly depleted magma (boninite). These data provide strong thermal constraints on the formation of the highly depleted dunites, as their formation requires hot, hydrous, shallow mantle (> 1250 °C at < 30 km depth) in the mantle wedge. Because the Sanbagawa metamorphic belt finally entrained these peridotites during progressive retrogression, B-type olivine fabrics probably developed in the fore-arc side of the subduction zone, above or along the subducting slab, possibly in association with dehydration fluids derived from the slab. The previously documented small magnitude of S-wave splitting can be explained by the seismic properties of B-type peridotites within an anisotropic layer of approximately several kilometers in thickness, oriented by flow parallel to the subducting slab, under maximum temperatures of 880-1030 °C depending on the flow stress. These findings indicate that such a B-type layer could constitute a dominant source of seismic S- and P-wave anisotropy in mantle wedge regions. © 2008 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.epsl.2008.06.014

    Web of Science

    Scopus

  192. ゾル・ゲル法による石英結晶試料の合成 査読有り

    井元 恒, 道林 克禎, 大内 智博, 中村 美千彦

    静岡大学地球科学研究報告   35 巻 ( 0 ) 頁: 45 - 54   2008年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:国立大学法人 静岡大学理学部地球科学教室  

    DOI: 10.51053/shizuoka.35.0_45

    CiNii Research

  193. Isotropic quartz aggregate prepared using a sol-gel method 査読有り

    Imoto H

    Geoscience Reports of the Shizuoka University   35 巻 ( 35 ) 頁: 45-54 - 54   2008年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡大学地球科学教室  

    DOI: 10.14945/00003618

  194. Isotropic quartz aggregate prepared using a sol-gel method 査読有り

    Imoto H

    Geoscience Reports of the Shizuoka University   ( 35 ) 頁: 45-54   2008年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

  195. Isotropic quartz aggregate prepared using a sol-gel method 査読有り

    Imoto H., Michibayashi K., Oouchi T., Nakamura M.

    Geoscience Reports of the Shizuoka University   ( 35 ) 頁: 45 - 54   2008年7月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geoscience Reports of the Shizuoka University  

    Synthetic quartz aggregates as a starting material for high-temperature/ high-pressure deformation experiments were prepared using a high-temperature/high-pressure apparatus, Silica gel was prepared using a sol-gel method and subsequently dried and heated in air for three days at temperatures between 700 and 1000°C. Various sets of the gels were then packed into Pt-Ni capsules with 0-2 wt% water and were sintered to form quartz aggregates at 800°C and 1 GPa for 5 hours. As a result, synthetic quartz aggregates with polygonal textures and very weak crystallographic preferred orientations were formed from a 1:4 mixture of two silica gels dried at 700°C and 1000°C, respectively.

    Scopus

  196. かんらん岩の構造敏感性と弾性的異方性 査読有り

    道林 克禎

    地學雜誌   117 巻 ( 1 ) 頁: 93-109 - 109   2008年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:公益社団法人 東京地学協会  

    &emsp;Peridotites derived from the uppermost mantle consist dominantly of olivine and subsequently of pyroxene, spinel, garnet, and plagioclase. Crystal-plastic flow of mantle rocks results in various types of structure within peridotite being developed to varying degrees, depending upon the structure sensitivity of the different mineral phases. Plastic deformation leads to the simultaneous development of shape-preferred orientations and crystal-preferred orientations. A shape-preferred orientation is the expression of the average orientation of flattening (foliation) and elongation (lineation) directions, as defined by the orientations of individual grains. A crystal-preferred orientation (CPO) is the expression of crystallographic orientations of grains within the rock, as developed via dislocation creep and recrystallization. During intense homogeneous plastic deformation of a peridotite composed of minerals with a dominant slip system, the preferred orientation of the slip plane and slip direction tends to coincide with the plane of plastic flow and the flow direction, respectively. Recently, a new olivine CPO classification (A, B, C, D, and E types) has been proposed by Karato and co-workers to illustrate the roles of stress and water content as controlling factors of olivine slip systems. An additional CPO type (AG) has also been proposed in recognition of its common occurrence in nature. Given that olivine and the other constituent minerals in peridotites contain intrinsic elastic anisotropies, the development of CPO within peridotite during plastic deformation gives rise to seismic anisotropy in the upper mantle. Thus, the anisotropic properties of mantle rocks derived from the upper 100 km of the mantle, such as Ichinomegata peridotite xenoliths from the northeast Japan arc, have been calculated and applied with the aim of understanding the seismic anisotropy of the Earth's mantle.

    DOI: 10.5026/jgeography.117.93

    CiNii Research

  197. カムチャッカ半島アバチャ火山かんらん岩捕獲岩の微細構造解析 査読有り

    大原 達也, 道林 克禎

    日本地質学会学術大会講演要旨   2008 巻 ( 0 ) 頁: 489-489 - 489   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2008.0.489.0

    CiNii Research

  198. 南部マリアナ海溝West Santa Rosa Bank断層で採取された背弧起源かんらん岩 査読有り

    道林 克禎, 小原 泰彦

    日本地質学会学術大会講演要旨   2008 巻 ( 0 ) 頁: 251-251 - 251   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2008.0.251.0

    CiNii Research

  199. キンバーライト捕獲岩の温度圧力条件と変形組織の関係 査読有り

    片山 郁夫, 陶山 由夏, 安東 淳一, 道林 克禎, 小宮 剛

    日本地質学会学術大会講演要旨   2008 巻 ( 0 ) 頁: 485-485 - 485   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2008.0.485.0

    CiNii Research

  200. 四国中央部三波川帯東赤石かんらん岩体 査読有り

    村本 政史, 道林 克禎

    日本地質学会学術大会講演要旨   2008 巻 ( 0 ) 頁: 249-249 - 249   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2008.0.249.0

    CiNii Research

  201. 高温高圧実験による石英の結晶成長過程の研究:結晶方位異方性の効果 査読有り

    井元 恒, 道林 克禎, 増田 敏明

    日本地質学会学術大会講演要旨   2008 巻 ( 0 ) 頁: 490-490 - 490   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2008.0.490.0

    CiNii Research

  202. 飛騨外縁帯八方尾根かんらん岩蛇紋岩体の構造解析と地震波特性 査読有り

    藤井 彩乃, 道林 克禎

    日本地質学会学術大会講演要旨   2008 巻 ( 0 ) 頁: 247-247 - 247   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2008.0.247.0

    CiNii Research

  203. かんらん岩の俳造敏感性と弾性的異方性 査読有り

    道林 克禎

    地学雑誌 117     頁: 93 - 109   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  204. マントルウェッジ背弧側由来かんらん岩の微細構造と地震波異方性 査読有り

    道林 克禎

    地球 30     頁: 63 - 70   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  205. マントルウェッジ前弧側由来かんらん岩の微細構造と地震波異方性 査読有り

    道林 克禎

    地球 30     頁: 71 - 77   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  206. マントルウェッジ前弧側山来かんらん岩の微細構造と地震波異方性 査読有り

    道林 克禎

    地球 30     頁: 71 - 77   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  207. マントルの構造敏感性, 地震波特性, そして物質移動 査読有り

    道林 克禎

    地球 30     頁: 3 - 9   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  208. かんらん岩の構造敏感性と弾性的異方性 査読有り

    道林 克禎

    地学雑誌 117     頁: 93 - 109   2008年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  209. 静岡大学通信(12) 査読有り

    道林 克禎

    静岡地学   96 巻 ( 96 ) 頁: 34 - 34   2007年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024798

  210. Variable microstructure of peridotite samples from the southern Mariana Trench: Evidence of a complex tectonic evolution 査読有り

    Michibayashi Katsuyoshi, Tasaka Miki, Ohara Yasuhiko, Ishii Teruaki, Okamoto Atsushi, Fryer Patricia

    TECTONOPHYSICS   444 巻 ( 1-4 ) 頁: 111 - 118   2007年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    We retrieved samples of peridotite from a dredge haul (KH92-1-D2) collected during Cruise KH92-1 undertaken by the research vessel (R/V) Hakuho in 1992 at the landward trench slope of the southern Mariana Trench (11°41.16′N, 143°29.62′E; depth 6594-7431 m), which is the deepest ocean in the world. Ten of 30 retrieved samples possessed both a foliation and lineation, as assessed from 46 thin sections of various orientations and observations of hand samples. The samples showed marked variation in microstructure, ranging from coarse (> 5 mm) equigranular and intensely elongated textures to finer (< 1 mm) porphyroclastic and fine-grained equigranular textures. Olivine fabrics also varied among the different samples, with (010)[100] and (010)[001] patterns (termed A- and B-type, respectively) observed in samples with coarse textures and no clear patterns observed in samples with fine textures. Even though the peridotite samples were retrieved from a single dredge site, some contain primary tectonic microstructures and some contain secondary microstructures. Recent bathymetric and topographic analyses indicate that the lithosphere in this region is as thin as 20 km. Such a thin lithosphere may have been intensely deformed, even perhaps in the ductile regime, during fore-arc extension; consequently, the observed variations in microstructure within the peridotite samples probably reflect the complex tectonic evolution of the southern Mariana region. © 2007 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tecto.2007.08.010

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    Scopus

  211. O-134 四国中央部三波川帯東赤石岩体ざくろ石単斜輝岩の変形構造解析(13.岩石・鉱物の破壊と変形,口頭発表,一般講演) 査読有り

    村本 政史, 道林 克禎

    日本地質学会学術大会講演要旨   114 巻   頁: 128   2007年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本地質学会  

    CiNii Research

  212. O-136 秋田県男鹿半島一の目潟火山カンラン岩捕獲岩の微細構造発達過程(13.岩石・鉱物の破壊と変形,口頭発表,一般講演) 査読有り

    佐津川 貴子, 道林 克禎

    日本地質学会学術大会講演要旨   114 巻   頁: 129   2007年9月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:日本地質学会  

    CiNii Research

  213. Oceanic core complexes and crustal accretion at slow-speading ridges 査読有り

    Benoit Ildefonse, D. K. Blackman, B. E. John, Y. Ohara, D. J. Miller, C. J. MacLeod, N. Abe, M. Abratis, E. S. Andal, M. Andr?ani, S. Awaji, J. S. Beard, D. Brunelli, A. B. Charney, D. M. Christie, A. G. Delacour, H. Delius, M. Drouin, F. Einaudi, J. Escartin, B. R. Frost, P. B. Fryer, J. S. Gee, M. Godard, C. B. Grimes, A. Halfpenny, H. E. Hansen, A. C. Harris, N. W. Hayman, E. Hellebrand, T. Hirose, J. G. Hirth, S. Ishimaru, K. T.M. Johnson, G. D. Karner, M. Linek, J. Maeda, O. U. Mason, A. M. McCaig, K. Michibayashi, A. Morris, T. Nakagawa, T. Nozaka, M. Rosner, R. C. Searle, G. Suhr, A. Tamura, M. Tominaga, A. von, der Handt, T. Yamasaki, X. Zhao

    Geology   35 巻   頁: 623 - 626   2007年7月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    Oceanic core complexes expose gabbroic rocks on the seafloor via detachment faulting, often associated with serpentinized peridotite. The thickness of these serpentinite units is unknown. Assuming that the steep slopes that typically surround these core complexes provide a cross section through the structure, it has been inferred that serpentinites compose much of the section to depths of at least several hundred meters. However, deep drilling at oceanic core complexes has recovered gabbroic sequences with virtually no serpentinized peridotite. We propose a revised model for oceanic core complex development based on consideration of the rheological differences between gabbro and serpentinized peridobte: emplacement of a large intrusive gabbro body into a predominantly peridotite host is followed by localization of strain around the margins of the pluton, eventually resulting in an uplifted gabbroic core surrounded by deformed serpentinite. Oceanic core complexes may therefore reflect processes associated with relatively enhanced periods of mafic intrusion within overall magma-poor regions of slow- and ultra-dow-spreading ridges. ? 2007 The Geological Society of America.

    DOI: 10.1130/G23531A.1

  214. Development of a shear band cleavage as a result of strain partitioning 査読有り

    Michibayashi Katsuyoshi, Murakami Masami

    JOURNAL OF STRUCTURAL GEOLOGY   29 巻 ( 6 ) 頁: 1070 - 1082   2007年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Structural Geology  

    Microstructural analyses of shear band cleavages in a centimeter-scale shear zone within a metasomatic biotite band in the Teshima granite, Ryoke metamorphic belt, southwest Japan, show that strain partitioning occurred between quartz and biotite-feldspar domains within the shear zone. Pre-tectonic hydrothermal alteration within the granite caused biotite replacement of both plagioclase and K-feldspar, resulting in the development of biotite-feldspar domains where K-feldspar mantles dominantly biotite-plagioclase aggregates. Subsequently, the altered granite was plastically deformed in simple shear, so that intra-layer shear band cleavages were passively developed within the biotite-feldspar domains, whereas intense dynamic recrystallization occurred in the quartz domains. The rotation and orientation of the intra-layer shear band cleavages can be explained by a finite strain ellipse model, which shows that strain in the biotite-feldspar domain requires only 10-20% of the bulk simple shear strain for the development of such cleavages, so that most of strain could be accommodated by deformation in the quartz domain. Consequently, the model suggests that the development of the shear zone resulted in strain partitioning between the quartz and the biotite-feldspar domains due to compositional variations via hydrothermal alteration within the granite. © 2007 Elsevier Ltd. All rights reserved.

    DOI: 10.1016/j.jsg.2007.02.003

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    Scopus

  215. フィリピン海パレスベラ海盆におけるゴジラムリオンから採取されたはんれい岩の変形微細構造解析 査読有り

    針金 由美子, 道林 克禎, 小原 泰彦

    日本地質学会学術大会講演要旨   2007 巻 ( 0 ) 頁: 252-252 - 252   2007年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2007.0.252.0

    CiNii Research

  216. 南部マリアナ海溝かんらん岩の微細構造解析とその意義 査読有り

    道林 克禎

    地球 29     頁: 628 - 634   2007年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  217. 静岡大学通信(10) 査読有り

    道林 克禎

    静岡地学   94 巻 ( 94 ) 頁: 69 - 70   2006年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024821

  218. Misorientations of garnet aggregate within a vein: an example from the Sanbagawa metamorphic belt, Japan 査読有り

    Okamoto A., Michibayashi K.

    JOURNAL OF METAMORPHIC GEOLOGY   24 巻 ( 5 ) 頁: 353 - 366   2006年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Metamorphic Geology  

    In this study, the chemistry and microstructure of garnet aggregates within a metamorphic vein are investigated. Garnet-bearing veins in the Sanbagawa metamorphic belt, Japan, occur subparallel to the foliation of a host mafic schist, but some cut the foliation at low angle. Backscattered electron image and compositional mapping using EPMA and crystallographic orientation maps from electron-backscattered diffraction (EBSD) reveal that numerous small garnet (10-100 lm diameter) coalesce to form large porphyroblasts within the vein. Individual small garnet commonly exhibits xenomorphic shape at garnet/ garnet grain boundaries, whereas it is idiomorphic at garnet/quartz boundaries. EBSD microstructural analysis of the garnet porphyroblasts reveals that misorientation angles of neighbourpair garnet grains within the vein have a random distribution. This contrasts with previous studies that found coalescence of garnet in mica schist leads to an increased frequency of low angle misorientation boundaries by misorientation-driven rotation. As garnet nucleated with random orientation, the difference in misorientation between the two studies is due to the difference in the extent of grain rotation. A simple kinetic model that assumes grain rotation of garnet is rate-limited by grain boundary diffusion creep of matrix quartz, shows that (i) the substantial rotation of a fine garnet grain could occur for the conditions of the Sanbagawa metamorphism, but (ii) the rotation rate drastically decreased as garnet grains formed large clusters during growth. Therefore, the random misorientation distribution of garnet porphyroblasts in the Sanbagawa vein is interpreted as follows: (i) garnet within the vein grew so fast that substantial grain rotation did not occur through porphyroblast formation, and thus (ii) random orientations at the nucleation stage were preserved. The extent of misorientation-driven rotation indicated by deviation from random orientation distribution may be useful to constrain the growth rate of constituent grains of porphyroblast that formed by multiple nucleation and coalescence. © 2006 Blackwell Publishing Ltd.

    DOI: 10.1111/j.1525-1314.2006.00642.x

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  219. Seismic anisotropy in the uppermost mantle, back-arc region of the northeast Japan arc: Petrophysical analyses of Ichinomegata peridotite xenoliths 査読有り

    Michibayashi Katsuyoshi, Abe Natsue, Okamoto Atsushi, Satsukawa Takako, Michikura Kenta

    GEOPHYSICAL RESEARCH LETTERS   33 巻 ( 10 )   2006年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Geophysical Research Letters  

    A dense network of seismic stations has been deployed across the northeast Japan arc to investigate mantle wedge structures. To attain independent petrophysical constraints, we determined the seismic properties of Ichinomegata mantle xenoliths from the back-arc region that were brought to the surface from the mantle lithosphere by volcanic eruptions. We calculated the seismic properties of the xenoliths from olivine and pyroxene crystal-preferred orientations and single crystal elastic constants. The small magnitude of measured S-wave splitting (delay time of 0.22 s in the area where the xenoliths were entrained) can be explained by the average seismic properties of mantle xenoliths for an approximately 20-km thick horizontal anisotropic layer, indicating that the mantle lithosphere could be one of the dominant sources of seismic anisotropy this layer is possibly related to deformation in the uppermost mantle lithosphere due to back-arc spreading along the northeast Japan arc. Copyright 2006 by the American Geophysical Union.

    DOI: 10.1029/2006GL025812

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  220. Rapid growth of garnet within a metamorphic vein inferred from misorientation angle distribution of garnet porphyroblasts 査読有り

    Okamoto A., Michibayashi K.

    AIP Conference Proceedings   833 巻   頁: 167 - 170   2006年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:AIP Conference Proceedings  

    The microstructure of garnet aggregates within a metamorphic vein are investigated to constrain the duration of vein formation. Garnet-bearing veins occur subparallel to the foliation of a host mafic schist in the Sanbagawa metamorphic belt, Japan. Microstructural observations using SEM, EPMA and EBSD reveal that numerous small garnets (10-100 μm diameter) coalesced to form large porphyroblasts within the vein. EBSD analysis of the porphyroblasts reveals that misorientation angles of neighbor-pair garnet grains within the vein have a random distribution. This contrasts with previous studies that found coalescence of garnets in mica schist leads to an increased frequency of low angle misorientation boundaries by misorientation-driven rotation. The random misorientation angle distribution indicates that (1) garnets within the vein grew so fast that they could not rotate within the vein, and thus (2) random orientations of garnets at the nucleation stage were preserved. On the basis of a simple kinetic model that assumes rotation of garnet is rate-limited by diffusion creep of matrix quartz, the time taken for a small garnet grain to rotate 1° is estimated to be 10 3 - 10 4 years. This duration may indicate the upper limit of the duration of garnet growth, and of vein formation. © 2006 American Institute of Physics.

    DOI: 10.1063/1.2207097

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  221. 固体圧変形試験機MK65Sの設計と性能 − 内部摩擦の評価 査読有り

    清水 以知子, 道林 克禎, 渡辺 悠太

    構造地質   ( 49 ) 頁: 15 - 26   2006年5月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:構造地質研究会  

    CiNii Books

  222. The effect of dynamic recrystallization on olivine fabric and seismic anisotropy: Insight from a ductile shear zone, Oman ophiolite 査読有り

    Michibayashi K, Ina T, Kanagawa K

    EARTH AND PLANETARY SCIENCE LETTERS   244 巻 ( 3-4 ) 頁: 695 - 708   2006年4月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Earth and Planetary Science Letters  

    Subhorizontal mantle structures subparallel to the Moho are rotated into NW-SE subvertical orientations across a shear zone in a sinistral sense of shear within the northern Fizh mantle section of the Oman ophiolite. Dynamic recrystallization resulted in grain size reduction of olivine and the development of porphyroclastic texture. Mean olivine grain size stabilized at ∼0.7 mm within the shear zone center; this may reflect the steady-state grain size of dynamically recrystallized olivine, as determined by the deviatoric stress, which in this case was as low as 10 MPa. Crystal-preferred orientation (CPO) patterns of olivine are consistently [100]-fiber or partial fiber texture, indicating that olivine slip systems did not change during shearing. Dynamic recrystallization causes a weakening of olivine fabric intensity toward the shear zone center, but this weakening is counterbalanced by CPO strengthening due to dislocation glide. This process resulted in an abrupt decrease in seismic anisotropy at the center of the shear zone, in contrast to a gradual decrease in olivine fabric intensity and mean grain size. The measured seismic anisotropy patterns did not change in ways that would be significantly measurable by seismological observations. Despite the development of the shear zone, dispersion of both P- and S-waves in the shear zone may be of little effect with respect to the overall seismic anisotropy. This is not only because the shear zone occurs substantially in a narrow region but also because the seismic anisotropy is weaker in the shear zone than the high-T structure region. It suggests that a record of simple systematic seismic anisotropy observed in the upper mantle may indicate a simplified mantle flow structure, as localized structures may be obscured in the region of the observation. © 2006 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.epsl.2006.02.019

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  223. O-104 メノウの高温高圧変形実験による石英の微細構造発達過程の研究 : 予察(12.岩石・鉱物の破壊と変形,口頭およびポスター発表,一般講演) 査読有り

    渡辺 悠太, 道林 克禎, 増田 俊明, 清水 以知子

    日本地質学会学術大会講演要旨   2006 巻 ( 0 ) 頁: 95   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2006.0_95_2

    CiNii Research

  224. Rapid growth of garnet within a metamorphic vein inferred from misorientation angle porphyroblasts 査読有り

    Okamoto Atsushi, Michibayashi Katsuyoshi

    WATER DYNAMICS   833 巻   頁: 167-+   2006年

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    記述言語:英語  

    Web of Science

  225. O-189 チェコ共和国ボヘミア山塊に産するMohelnoかんらん岩体におけるかんらん石CPOの変遷(21.変成岩とテクトニクス,口頭およびポスター発表,一般講演) 査読有り

    亀井 陽, 小畑 正明, 道林 克禎

    日本地質学会学術大会講演要旨   2006 巻 ( 0 ) 頁: 137   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2006.0_137_2

    CiNii Research

  226. Structural geology of peridotite and rheology of the uppermost mantle 査読有り

    Michibayashi Katsuyoshi

    NIHON REOROJI GAKKAISHI   34 巻 ( 5 ) 頁: 291-300   2006年

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    記述言語:英語  

    Web of Science

  227. Structural geology of peridotite and rheology of the uppermost mantle 査読有り

    Michibayashi K.

    Nihon Reoroji Gakkaishi   34 巻 ( 5 ) 頁: 291 - 300   2006年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Nihon Reoroji Gakkaishi  

    The earth consists of crust, mantle and core. The crust is the earth's surface component, upon which we live. Situated below the crust, the mantle is the dominant component consisting of the earth, making up 80 %. The rheology of the mantle is the key to understanding the working of our mother planet. Peridotite, which is derived from the uppermost mantle, preserves structures and textures that contain information on flow stress and strain (e.g., foliation, lineation and grain size), while the crystal-preferred orientations of minerals (i.e., fabric) reveal the nature of kinematic movement within the mantle. The mantle section of the Oman ophiolite is the largest section of oceanic lithosphere exposed at the earth surface. Extensive structural mapping of these rocks has been conducted throughout the Oman mountain range to unravel mantle processes associated with the generation of oceanic lithosphere. Research in this area demonstrated that the formation of oceanic mantle lithosphere at a fast-spreading ridge involves active mantle flow associated with a mantle diapir. © 2006 The Society of Rheology, Japan.

    DOI: 10.1678/rheology.34.291

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    CiNii Research

  228. Rapid growth of garnet within a metamorphic vein inferred from misorientation angle porphyroblasts 査読有り

    Atsushi Okamoto, Katsuyoshi Michibayashi

    WATER DYNAMICS   833 巻   頁: 167 - +   2006年

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    記述言語:英語   掲載種別:研究論文(国際会議プロシーディングス)   出版者・発行元:AMER INST PHYSICS  

    The microstructure of garnet aggregates within a metamorphic vein are investigated to constrain the duration of vein formation. Gamet-bearing veins occur subparallel to the foliation of a host mafic schist in the Sanbagawa metamorphic belt Japan. Microstructural observations using SEM, EPMA and EBSD reveal that numerous small garnets (10-100 mu m diameter) coalesced to form large porphyroblasts within the vein. EBSD analysis of the porphyroblasts reveals that misorientation angles of neighbor-pair garnet grains within the vein have a random distribution. This contrasts with previous studies that found coalescence of garnets in mica schist leads to an increased frequency of low angle misorientation boundaries by misorientation-driven rotation. The random misorientation angle distribution indicates that (1) garnets within the vein grew so fast that they could not rotate within the vein, and thus (2) random orientations of garnets at the nucleation stage were preserved. On the basis of a simple kinetic model that assumes rotation of garnet is rate-limited by diffusion creep of matrix quartz, the time taken for a small garnet grain to rotate 1 degrees is estimated to be 10(3) - 10(4) years. This duration may indicate the upper limit of the duration of garnet growth, and of vein formation.

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  229. かんらん岩の構造解析と地球内部のレオロジー 査読有り

    道林 克禎

    日本レオロジー学会誌 34     頁: 291 - 300   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  230. 固体圧変形試験機MK65Sの設計と性能 : 内部摩擦の評価 査読有り

    道林 克禎

    構造地質 49     頁: 15 - 26   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  231. 固体圧変形実験装置MK65Sの設計と性能 : 内部摩擦の評価 査読有り

    清水 以知子, 道林 克禎

    構造地質 49     頁: 15 - 26   2006年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)  

    CiNii Research

  232. 静岡大学通信(8) 査読有り

    道林 克禎

    静岡地学   92 巻 ( 92 ) 頁: 41 - 43   2005年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024988

  233. Progressive shape evolution of a mineral inclusion under differential stress at high temperature: Example of garnet inclusions within a granulite-facies quartzite from the Lutzow-Holm Complex, East Antarctica 査読有り

    Okamoto A, Michibayashi K

    JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH   110 巻 ( B11 ) 頁: 1-16 - 16   2005年11月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Journal of Geophysical Research: Solid Earth  

    Interfacial tension (γ) and differential stress (σ) affect the shape of a mineral grain included within a crystalline host. We present a simple model that predicts the progressive change in aspect ratio of an ellipsoidal inclusion. Three processes are considered in the model: dislocation creep, interface diffusion creep, and rounding by interface diffusion. The model reveals that (1) the inclusion aspect ratio (L) evolves toward a steady state value, (2) the time taken to achieve a steady state aspect ratio increases with increasing grain size (R), and (3) the dominant deformation mechanism varies from diffusion creep to dislocation creep with increasing grain size and/or differential stress. The L-R distribution pattern of garnets in a granulite-facies quartzite from the Lützow-Holm Complex, East Antarctica is compared with the model result. The garnet aspect ratio systematically varies with respect to grain size, and the most elongate ones are of intermediate grain size (∼250 μm). A two-stage deformation with high and low differential stresses (stage A and B) best explains for the observed L-R pattern of garnets. The duration (tA) at stage A is determined only when the differential stress (σA) is assumed due to the size independency of dislocation creep. Assuming γgrtqtz = 1.0 N m-1, Dgb,A = 1.0 × 10-12 m2 s-1, Dgb,B = 1.0 × 10-11 m2 s-1, and σA = 1.0 MPa, the garnet data are fitted to a theoretical curve under condition of σB = 1.4 × 10-2 MPa, tA = 0.5 Myr, and tB = 14.4 Myr. Copyright 2005 by the American Geophysical Union.

    DOI: 10.1029/2004JB003526

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  234. IODP Expeditions 304 and 305: Oceanic core complex formation, Atlantis Massif 査読有り

    Blackman D

    Scientific Drilling   1 巻   頁: 28-31 - 31   2005年9月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Scientific Drilling  

    DOI: 10.2204/iodp.sd.1.05.2005

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  235. Propagation of seismic slip from brittle to ductile crust: Evidence from pseudotachylyte of the Woodroffe thrust, central Australia 査読有り

    Lin AM, Maruyama T, Aaron S, Michibayashi K, Camacho A, Kano KI

    TECTONOPHYSICS   402 巻 ( 1-4 ) 頁: 21 - 35   2005年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Tectonophysics  

    The Woodroffe thrust, central Australia, is a > 1.5-km-wide mylonitized shear zone marked by large volumes of mm- to cm-scale pseudotachylyte veins. The pseudotachylytes display typical melt-origin features, including rounded and embayed clasts, spherulitic and dentritic microlites, and flow structures within a fine-grained matrix. Three types of pseudotachylyte are identified on the basis of deformation texture, vein morphology, and host-rock lithology: cataclasite-related (C-Pt), mylonite-related (M-Pt), and ultramylonite-related (Um-Pt). The M-Pt and Um-Pt veins intrude into mylonite and ultramylonite and are themselves overprinted by subsequent mylonitization. These pseudotachylytes contain an internal foliation defined by flattened porphyroclasts and layering of the fine-grained vein matrix, and the foliation is generally oriented parallel to foliation in the surrounding mylonite and ultramylonite. These observations constrain the timing and environment of M-Pt and Um-Pt pseudotachylyte formation to a protracted period of deformation and mylonitization within the ductile regime of the crust. The M-Pt and Um-Pt veins, as well as the host mylonite, are overprinted by cataclasis and multiple generations of late-stage C-Pt veins that were generated in the brittle-dominated regime of the upper crust during uplift and exhumation of the shear zone. The coexistence of multiple generations of voluminous C-Pt, M-Pt, and Um-Pt veins indicates that the pseudotachylyte veins represent a large number of large earthquakes and accompanying seismic slip over an extended period of seismicity on the Woodroffe thrust. The timing and distribution of pseudotachylyte indicate that the earthquakes nucleated at the base of the brittle-dominated seismogenic zone and propagated down through the brittle-ductile transition into the ductile-dominated regime of the crust. © 2005 Elsevier B.V. All rights reserved.

    DOI: 10.1016/j.tecto.2004.10.016

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  236. 静岡大学通信(7) 査読有り

    道林 克禎

    静岡地学   91 巻 ( 91 ) 頁: 51 - 53   2005年6月

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:静岡県地学会  

    DOI: 10.14945/00024997

  237. Fluid accumulation beneath the detachment fault in the Central Range of Taiwan 査読有り

    Masago Hideki, Okamoto Kazuaki, Chan Yu Chang, Yui Tzeng Fu, Chu Hao Tsu, Iizuka Yoshiyuki, Michibayashi Katsuyoshi, Harigane Yumiko

    地質學雜誌   111 巻 ( 2 ) 頁: III-IV - IV   2005年2月

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    Hypocenter of the Chi-Chi earthquake is located on the detachment fault distributed approximately 10 km of depth, near the boundary between continental basement and overlying continental shelf sediments. Exhumed section of the basement rocks underwent greenschist facies (350-450℃) metamorphism. Overlying Eocene-Miocene sediments (termed as Slate Belt) also underwent sub-greenschist facies (<350℃) metamorphism. We found an outcrop-scale duplex structure exposed in the Slate Belt, suggesting an outcrop of the detachment fault. The outcrop consists of alternation of sandstone and slate layers. It is notable that pegmatitic, V-shaped quartz veins in the sandstone concentrate beneath the detachment fault, suggesting cracks filled with fluid by hydrofaulting. At this time, overlying slate layers play a major role as an impermeable cap-rock. If the stored fluid beneath the detachment was expelled to the pre-existing link thrust, cracks in the fault zone would propagate and facilitate the rupture process of the earthquake.

    DOI: 10.5575/geosoc.111.2.III_IV

    CiNii Research

  238. IODP Exp. 304/305掘削結果 : 大西洋中央海嶺30°Nアトランティス岩体(24.岩石鉱物一般) 査読有り

    阿部 なつ江, 小原 泰彦, Andal Eric S, 淡路 俊作, 広瀬 丈洋, 石丸 聡子, 前田 仁一郎, 道林 克禎, 中川 達功, 野坂 俊夫, 田村 明弘, 冨永 雅子, 山崎 徹, IODP Ex, 乗船研究者一同

    日本地質学会学術大会講演要旨   2005 巻 ( 0 ) 頁: 178   2005年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2005.0_178_2

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  239. パレスベラ海盆の海洋コアコンプレックス : 特にゴジラムリオンのデタッチメント断層について(23.変成岩とテクトニクス) 査読有り

    針金 由美子, 道林 克禎, 小原 泰彦, 沖野 郷子

    日本地質学会学術大会講演要旨   2005 巻 ( 0 ) 頁: 170   2005年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2005.0_170_1

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  240. 蛇紋岩のレオロジー : 脱水脆性化はスラブ内地震を引き起こすか?(14.岩石・鉱物の破壊と変形) 査読有り

    清水 以知子, 渡辺 悠太, 道林 克禎, 増田 俊明

    日本地質学会学術大会講演要旨   2005 巻 ( 0 ) 頁: 123   2005年

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    記述言語:英語   掲載種別:研究論文(学術雑誌)   出版者・発行元:一般社団法人 日本地質学会  

    DOI: 10.14863/geosocabst.2005.0_123_2

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  241. Integrated Ocean Drilling Program Expedition 305 preliminary report oceanic core complex formation, Atlantis Massif oceanic core complex formation, Atlantis Massif, Mid-Atlantic Ridge: Drilling into the footwall and hanging wall of a tectonic exposure of deep, young oceanic lithosphere to study deformation, alteration, and melt generation 査読有り

    Blackman D., Ildefonse B., John B.E., Ohara Y., Miller D.J., MacLeod C.J., Delius H., Abe N., Beard J.S., Brunelli D., Delacour A.G., Escartin J., Fryer P.B., Halfpenny A., Hansen H.E., Harris A.C., Hasebe A.T., Hellebrand E., Ishimaru S., Johnson K.T.M., Karner G.D., Linek M., Mason O.U., Michibayashi K., Nozaka T., Rosner M., Suhr G., Tominaga M., Yamasaki T., Zhao X., Einaudi F., Abratis M.W., Andal E.S., Andreani M., Awaji S., Charney A., Christie D., Drouin M., Frost B.R., Gee J.S., Godard M., Grimes C.B., Hayman N.W., Hirose T., Hirth J.G., Maeda J., McCaig A.M., Morris A., Nakagawa T., Searle R.C., Von Der Handt A., Simpson A., Malone W., Grout R.M., Davis R., Crowder L.K., Peng C., Cortes M., Endris C., Graham D., Hodge M.J., Housley L.S., Jackson E., Kotze J.J., Maeda L., Moortgat E., Murphy M., Pretorius P., Weiss P., Wheatley R.M., Yabyabin Y., Espinosa J.

    Integrated Ocean Drilling Program   ( 305 ) 頁: 1 - 78   2005年

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    記述言語:日本語   掲載種別:研究論文(学術雑誌)   出版者・発行元:Integrated Ocean Drilling Program  

    Integrated Ocean Drilling Program Expedition 305, a joint science program with Expedition 304, was designed to investigate the processes that control formation of oceanic core complexes, as well as the exposure of ultramafic rocks in very young oceanic lithosphere. Prior studies indicated that two main drill sites on Atlantis Massif, on the western rift flank of the Mid-Atlantic Ridge (MAR) at 30°N, could provide key constraints on the structure of the detachment fault zone, rock types exposed at shallow structural levels in the footwall, and their alteration history, as well as that of the volcanic succession in the hanging wall. Expedition 305 deepened Hole U1309D in the footwall of Atlantis Massif to 1415.5 meters below seafloor, with high recovery (average = 74.8%) of dominantly gabbroic rocks. Hole U1309D was logged twice, providing the opportunity for unprecedented core-logging integration for a deep borehole in the oceanic lithosphere. The recovered rocks range from dunitic troctolite, troctolite, (olivine) gabbro, and gabbronorite to evolved oxide gabbro that locally contains abundant zircon and apatite, and diabase. The texture of the dunitic troctolite suggests a cumulate origin. The gabbroic suite from Hole U1309D is among the most primitive recovered from the MAR, with Mg# ranging from 67 to 87. Although alteration mineral assemblages record cooling of gabbroic rocks from magmatic conditions to zeolite facies, a low-temperature phase that reflects alteration at temperatures <500°C is most significant. The overall trends in alteration and the changes in secondary mineralogy downhole suggest that there may be two separate secondary processes that have affected the footwall in the vicinity of Hole U1309D. In the upper ∼840 m, seawater-rock interactions may pervade the gabbroic sequence. Below that depth, the nature of and the fluctuations in degree and style of metamorphism are related to fluids of a different composition percolating along fault/ductile deformation zones. Hence, the core records an extensive history of gabbroic rock-fluid interaction, possibly including magmatic fluids. One of the prominent features of the rocks from Hole U1309D is the lack of extensive amphibolite facies alteration and deformation. This contrasts strongly with the gabbroic suite recovered from Ocean Drilling Program Hole 735B, at the Southwest Indian Ridge. The rocks recovered in Hole U1309D show very little deformation, and any deformation related to a major detachment fault system must have occurred at low temperature and must be strongly localized in the very upper part of the hole. This, together with very minor deformation in the amphibolite facies, is not consistent with the classical "core complex" interpretation of the corrugated, domal massifs on the seafloor resulting from surface exposure of a detachment fault that roots deeply at the base of the lithosphere. In addition, shipboard paleomagnetic measurements indicate there has been no significant net tectonic rotation (5°) of the footwall. This seems to preclude a rolling hinge model for the uplift of the core of Atlantis Massif along a single concave, normal fault. The ∼ 1.4 km sequence of dominantly gabbroic rocks is inconsistent with the initial prediction that the footwall was composed of an uplifted mantle section where serpentinization was responsible for lower densities/seismic velocities in the upper few hundred meters. A more complex model than that put forward before Expeditions 304 and 305 will be required. The fact that we did not reach fresh mantle peridotite, together with the known exposures of serpentinized mantle along the southern ridge of the massif, supports models of complicated lateral heterogeneity in slow-spreading oceanic crust. We have, however, placed a constraint on the magnitude of this heterogeneity - gabbro bodies in this setting can exceed 1.5 km in thickness.

    Scopus

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講演・口頭発表等 134

  1. オマーンオフィオライト掘削から採取された苦鉄質岩コア試料の弾性波速度測定に基づくオフィオライト層序の速度構造.

    畠山航平・阿部なつ江・岡崎啓史・Ildefonse Benoit・片山郁夫・The Oman Drilling Project Phase 1 Science Party(道林を含む),

    日本地質学会第125年学術大会 

     詳細を見る

    開催年月日: 2018年9月

    記述言語:日本語  

    開催地:北海道大学、札幌(北海道胆振東部地震のため中止)   国名:日本国  

  2. メノウの高温高圧変形実験による石英の微細構造発達過程の研究:予察.

    渡辺悠太・道林克禎・増田俊明・清水以知子

    日本地質学会第113年学術大会 

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    開催年月日: 2018年9月

    記述言語:日本語  

    開催地:高知大学、高知   国名:日本国  

  3. 北極海ガッケル海嶺下の最上部マントルに発達するカンラン石ファブリック

    針金由美子・道林克禎・森下知晃・スノージョナサン

    日本地質学会第125年学術大会 

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    開催年月日: 2018年9月

    記述言語:日本語  

    開催地:北海道大学、札幌(北海道胆振東部地震のため中止)   国名:日本国  

  4. モホ反射面のつくりかた

    田村芳彦・藤江剛・大平茜・高澤栄一・Ceuleneer George・道林克禎・佐藤智紀・小平秀一・三浦誠一,

    日本地質学会第125年学術大会 

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    開催年月日: 2018年9月

    記述言語:日本語  

    開催地:北海道大学、札幌(北海道胆振東部地震のため中止)   国名:日本国  

  5. オマーンオフィオライトWadi Tayin岩体における地殻ーマントル境界の掘削

    高澤栄一・Coggon Jude・Kelemen Peter・Matter Juerg・道林克禎・森下知晃・田村芳彦・Teagle Damon・Khaw Thu Moe・山田泰広・The Oman Drilling Project Science Party

    日本地質学会第125年学術大会 

     詳細を見る

    開催年月日: 2018年9月

    記述言語:日本語  

    開催地:北海道大学、札幌(北海道胆振東部地震のため中止)   国名:日本国  

  6. ICDPオマーン陸上掘削コア試料に記録されているモホ遷移帯の岩石物性について

    阿部なつ江・岡崎啓史・畠山航平・赤松祐哉・片山郁夫・高澤栄一・道林克禎・ケレメン ピーター・ティーグル デーモン・モー キョー・山田泰広・The Oman Drilling Project Scientific Party

    日本地質学会第125年学術大会 

     詳細を見る

    開催年月日: 2018年9月

    記述言語:日本語  

    開催地:北海道大学、札幌(北海道胆振東部地震のため中止)   国名:日本国  

  7. オマーンオフィオライト南部でもハンレイ岩ーカンラン岩関係

    森下知晃・荒井章司・Kelemen Peter・Teagle Damon・石井慶佑・高澤栄一・Nguen Du・Coggon Jude・Matter Juerg・道林克禎・田村芳彦・Khaw Thu Moe・山田泰広・The Oman Drilling Project Scientific Party,

    日本地質学会第125年学術大会 

     詳細を見る

    開催年月日: 2018年9月

    記述言語:日本語  

    開催地:北海道大学、札幌(北海道胆振東部地震のため中止)   国名:日本国  

  8. ゴジラメガムリオンの掘削実現へ向けて

    小原泰彦・道林克禎・ディック ヘンリー・スノー ジョナサン・針金由美子・小野重明

    日本地球惑星科学連合大会2018 

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    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  9. High-pressure metamorphism and mantle metasomatism in the Mariana convergent margin: Petrology of mafic and ultramafic clasts recovered from IODP Exp. 366

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    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  10. リアルタイム観測・超深度掘削・超高圧実験の統合による沈み込み帯4D描像 -地震・噴火から地球の遠未來まで,革新的予測科学への挑戦-

    平田直・木下正高・篠原雅尚・益田晴恵・阿部なつ江・道林克禎・片山郁夫・氏家恒太郎・小村健太朗・藤原治・稲垣史生・諸野祐樹・入舩徹男・鍵裕之・西弘嗣・加藤照之・有吉慶介・小原一成

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  11. Fabric development on chemically heterogeneous mantle beneath the Gakkel Ridge in Arctic ocean.

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    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  12. Drilling of crust-mantle transition zone in the CM site of Wadi Tayin massif in the Oman ophiolite: the ICDP Oman Drilling Project.

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    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  13. Initial studies on the physical property measurement of listvenite, serpentinite and the metamorphic sole from ICDP Oman Drilling Project Hole BT1B.

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    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  14. マントルウエッジプレート境界掘削:オマーン陸上掘削ーサマイル・オフィオライトの炭酸塩岩化したカンラン岩から下位の変成岩までの掘削成果概要

    森下知晃・敬礼人 笛人・Coggon Judith・またー よーぐ・ハリス ミッシェル・道林克禎・高澤栄一・ティーグル デイモン・ゴダード マーゴ・オマーン掘削計画第1期科学チーム

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  15. The Oman Drilling Project Phase I Science Party, 2018. Initial studies of the petrophysics in the dike and upper gabbro from ICDP Hole GT3A, the Oman Drilling Project Phase I

     詳細を見る

    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  16. Fine-grained gabbroic layers in the lower and middle crustal sections of the Oman Ophiolite (Holes GT1A and GT2A), ICDP Oman Drilling Project

     詳細を見る

    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  17. Major and trace element compositions of peridotites from the Maqsad diapir area: implication for the melting and melt-mantle reaction at mid-ocean ridge.

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    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  18. Overview of Hole CM1 in the Oman Drilling Project Phase 2: Crust-Mantle boundary

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    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  19. Listvenite-metamorphic sole transition in the basal thrust of the Oman ophiolite: Geochemical, mineralogical and reaction path model preliminary results from Oman Drilling Project Hole BT1B.

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    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  20. Overview of Hole GT3A: The sheeted dike/gabbro transition

    阿部なつ江・ハリス ミッシェル・道林克禎・de Obeso Juan Carlos・ケレメン ピーター・高澤栄一・ティーグル デーモン・カゴン ジュード・マター ヨルク・The Oman Drilling Project Phase I Science Party

    日本地球惑星科学連合大会2018 

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    開催年月日: 2018年5月

    記述言語:英語  

    開催地:幕張メッセ、千葉   国名:日本国  

  21. Overview of Hole GT2A, ICDP Oman Drilling Project: Drilling middle gabbro in Wadi Tayin massif, Oman ophiolite

     詳細を見る

    開催年月日: 2018年5月

    記述言語:英語  

    国名:日本国  

  22. オマーンオフィオライトの海洋地殻下部の構造:ICDPオマーン陸上掘削孔GT1Aの予察的報告

    海野進・ケレメン ピーター・高澤栄一・道林克禎・ティーグル デーモン・The Oman Drilling Project Phase1 Science Party Phase1 Science Party

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  23. モホの成因

    田村芳彦・高澤栄一・セレナー ジョージ・道林克禎・佐藤智紀・小平秀一・三浦誠一

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  24. オマーン陸上掘削第1期ChikyuOman2017におけるオフィオライト地殻セクションの岩石物性研究速報.

    阿部なつ江・岡崎啓史・畠山航平・イルデフォン ブノワ・レオン ジェームス・立石大和・道林克禎・高澤栄一・ケレメン ピーター・ティーグル デーモン・ハリス ミッシェル・カゴン ジュード・de Obeso Juan Calros・マター ヨルク・The Oman Drilling Project Phase I Science Party

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  25. 富士火山,青木ヶ原溶岩中の斜長石集斑晶のEBSE解析:集斑晶形成過程への示唆

    中島雄士・石橋秀巳・柿畑優季・外西奈津美・道林克禎・安田敦

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  26. モホのつくり方

    田村芳彦・高澤栄一・セレナー ジョージ・道林克禎・佐藤智紀・小平秀一・三浦誠一

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  27. オマーンオフィオライト・ワディタイン岩体CMサイトにおける地殻-マントル遷移帯の陸上掘削.

    高澤栄一・Coggon Jude・Kelemen Peter・Matter Juerg・道林克禎・田村芳彦・Teagle Damon・KhawThu Moe・山田泰広・The Oman Drilling Project Phase II Science Party,

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2018年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  28. しんかい湧水域を育む南部マリアナ前弧の地質.

    小原泰彦・奥村知世・Robert J. Stern・大家翔馬・藤井昌和・笠谷貴文・Fernando Martinez・石井輝秋・道林克禎・しんかい湧水域研究チーム一同

    InterRidge Japan研究集会「海洋リソスフェアの蛇紋岩化作用と物理・化学・生物プロセス」 

     詳細を見る

    開催年月日: 2017年11月

    記述言語:日本語  

    開催地:東京大学大気海洋研究所,柏   国名:日本国  

  29. オマーン掘削プロジェクト ChikyuOman 2017 Leg1速報

    高澤栄一・道林克禎・Oman Drilling Project Phase 1 Science Party

    InterRidge Japan研究集会「海洋リソスフェアの蛇紋岩化作用と物理・化学・生物プロセス」 

     詳細を見る

    開催年月日: 2017年11月

    記述言語:日本語  

    開催地:東京大学大気海洋研究所,柏   国名:日本国  

  30. モホールへの道:ゴジラメガムリオン掘削提案

    小原泰彦・道林克禎・小野重明

    日本地質学会第124年学術大会(台風18号による暴風警報のため中止) 

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    開催年月日: 2017年9月

    記述言語:日本語  

    開催地:愛媛大学、松山   国名:日本国  

  31. 変形微細組織から推察される火星隕石ナクライトの形成環境に関する考察 国際会議

    高野安見子・片山郁夫・臼井寛裕・伊藤元雄・道林克禎

    JpGU-AGU Joint Meeting 2017 

     詳細を見る

    開催年月日: 2017年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  32. 地殻ーマントル境界のダイナミクスと物性を明らかにするオマーン掘削プロジェクト 国際会議

    高澤栄一・道林克禎・田村芳彦・森下知晃・山田泰広・キョートォー モー・斉藤実篤

    JpGU-AGU Joint Meeting 2017 

     詳細を見る

    開催年月日: 2017年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  33. オマーンオフィオライトICDP陸上掘削の概要と展望

    高澤栄一・田村芳彦・道林克禎・森下知晃・阿部なつ江・宮澤隆・仙田量子・キヨートウー モー

    日本地球惑星科学連合2016年大会 

     詳細を見る

    開催年月日: 2016年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  34. Lithospheric structure and composition of the Southern Marianas.

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    開催年月日: 2016年5月

    記述言語:英語  

    国名:日本国  

  35. 角閃石片麻岩の弾性波速度と岩石微細構造

    小池寛太・遠藤弘人・道林克禎・渡辺了

    日本地球惑星科学連合2016年大会 

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    開催年月日: 2016年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  36. IODP Expedition 352前弧玄武岩とボニナイトの掘削成功

    柵山徹也・道林克禎・Python Marie・清水健二・IODP EXP352乗船研究者一同

    日本地球惑星科学連合2015年大会 

     詳細を見る

    開催年月日: 2015年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  37. IODP-EXP352: IBM前弧掘削による沈み込み初期過程とオフィオライトモデルの検証

    清水健二・道林克禎・柵山徹也・Marie Python,Expedition 352 Scientists IODP

    日本地球惑星科学連合2015年大会 

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    開催年月日: 2015年5月

    記述言語:英語  

    開催地:幕張メッセ、千葉   国名:日本国  

  38. 南部マリアナ前弧かんらん岩の地球化学的特徴

    柵山徹也・石井輝秋・道林克禎・小原泰彦・常青・原口悟・木村純一

    日本地球惑星科学連合2014年大会 

     詳細を見る

    開催年月日: 2014年4月 - 2014年5月

    記述言語:日本語  

    開催地:パシフィコ横浜、横浜   国名:日本国  

  39. 圧力1GPaにおけるアンチゴライト蛇紋岩弾性波速度の温度依存性

    白井亮・渡辺了・米田明・道林克禎

    日本地球惑星科学連合2014年大会 

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    開催年月日: 2014年4月 - 2014年5月

    記述言語:日本語  

    開催地:パシフィコ横浜、横浜   国名:日本国  

  40. Olivine CPO in non-deformed peridotite due to topotactic replacement of antigorite

     詳細を見る

    開催年月日: 2014年4月 - 2014年5月

    記述言語:英語  

    国名:日本国  

  41. マイクロブーディン解析による主応力軸方向の検証

    西脇伸・大森康智・木村希生・岡本敦・佐津川貴子・道林克禎・増田俊明

    日本地質学会第119年学術大会(2012 大阪) 

     詳細を見る

    開催年月日: 2012年9月

    記述言語:日本語  

    開催地:大阪府立大学、大阪   国名:日本国  

  42. スラブ物質とマントル物質の物理化学相互作用の痕跡:三波川帯泥質片岩への多角的なアプローチ

    水上知行・岡崎友・荒井章司・針金由美子・道林克禎・榎並正樹・Wallis Simon

    日本地質学会第119年学術大会(2012 大阪) 

     詳細を見る

    開催年月日: 2012年9月

    記述言語:日本語  

    開催地:大阪府立大学、大阪   国名:日本国  

  43. 非変形olivineのCPO形成メカニズム ~antigorite→olivine反応におけるtopotaxy~

    永冶方敬・ウォリス サイモン・小林広明・道林克禎・水上知行

    日本地質学会第119年学術大会(2012 大阪) 

     詳細を見る

    開催年月日: 2012年9月

    記述言語:日本語  

    開催地:大阪府立大学、大阪   国名:日本国  

  44. 二枚貝異説再考:イノセラムスが原鰓類だという結晶学的証拠

    平野健幸・生形貴男・道林克禎

    日本地球惑星科学連合2012年大会 

     詳細を見る

    開催年月日: 2012年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  45. 蛇紋岩の地震波速度ーアンチゴライト粒子形状の影響

    渡辺了・白杉勇人・道林克禎

    日本地球惑星科学連合2012年大会 

     詳細を見る

    開催年月日: 2012年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  46. antigoriteの脱水分解とB-タイプolivine CPOの形成

    永冶方敬・Wallis Simon・道林克禎・水上知行

    日本地球惑星科学連合2012年大会 

     詳細を見る

    開催年月日: 2012年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  47. 伊豆ー小笠原前弧域から採取されたかんらん岩の微細構造解析

    針金由美子・道林克禎・森下知晃・谷健一郎・石塚治

    日本地球惑星科学連合2012年大会 

     詳細を見る

    開催年月日: 2012年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  48. Fabric analyses of glaucophane and lawsonite in low-grade blueschist from Diablo Range, California.

    Kim, D., Katayama, I., Michibayashi, K., Tsujimori, T.

    日本地球惑星科学連合2012年大会 

     詳細を見る

    開催年月日: 2012年5月

    記述言語:英語  

    開催地:幕張メッセ、千葉   国名:日本国  

  49. 蛇紋岩の岩石組織と弾性波速度—粒子形状を考慮した新しい計算法ー

    渡辺了・白杉勇人・道林克禎

    地震研シンポジウム「地震発生帯の素過程成果報告会」 

     詳細を見る

    開催年月日: 2012年2月

    記述言語:日本語  

    開催地:東京大学地震研究所,東京   国名:日本国  

  50. 領家変成帯から見出される拡散クリープー転位クリープ遷移とその条件

    宮崎智美・奥平敬元・篠田圭司・佐津川貴子・道林克禎

    日本地質学会第118年学術大会・日本鉱物科学会2011年会合学術大会 

     詳細を見る

    開催年月日: 2011年9月

    記述言語:英語  

    開催地:茨城大学、水戸   国名:日本国  

  51. 沈み込み帯前弧マントルウェッジにおけるAntigorite CPOパターンー三波川変成帯東赤石岩体の例

    西井彩・Wallis Simon・水上友行・道林克禎

    日本地質学会第118年学術大会・日本鉱物科学会2011年会合学術大会 

     詳細を見る

    開催年月日: 2011年9月

    記述言語:英語  

    開催地:茨城大学、水戸   国名:日本国  

  52. 領家変成帯から見出される拡散クリープー転位クリープ遷移とその条件

    宮崎智美・奥平敬元・篠田圭司・佐津川貴子・道林克禎

    日本地質学会第118年学術大会・日本鉱物科学会2011年会合学術大会 

     詳細を見る

    開催年月日: 2011年9月

    記述言語:日本語  

    開催地:茨城大学、水戸   国名:日本国  

  53. 微生物分子温度計:地下圏の温度プロファイリング

    木村浩之・道林克禎

    日本地質学会第118年学術大会・日本鉱物科学会2011年会合学術大会 

     詳細を見る

    開催年月日: 2011年9月

    記述言語:日本語  

    開催地:茨城大学、水戸   国名:日本国  

  54. フィリピン海ゴジラメガムリオンから採取されたはんれい岩に含まれる角閃石の地球化学的特徴

    針金由美子・森下知晃・Snow Jonathan・田村明弘・道林克禎・小原泰彦・荒井章司

    日本地質学会第118年学術大会・日本鉱物科学会2011年会合学術大会 

     詳細を見る

    開催年月日: 2011年9月

    記述言語:日本語  

    開催地:茨城大学、水戸   国名:日本国  

  55. Direct evidence for upper mantle structure in the NW Pacific Plate: microstructural analysis of a petit-spot peridotite

     詳細を見る

    開催年月日: 2011年5月

    記述言語:英語  

    国名:日本国  

  56. 西南日本三波川帯の前弧マントルウェッジにおけるAntigorite CPOパターン

    西井彩・ウォリス サイモン・水上友行・道林克禎

    日本地球惑星科学連合2011年大会 

     詳細を見る

    開催年月日: 2011年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  57. アンチゴライトを含む蛇紋岩マイロナイトの弾性波速度

    白杉勇人・渡辺了・道林克禎

    日本地球惑星科学連合2011年大会 

     詳細を見る

    開催年月日: 2011年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  58. 三波川帯角閃岩・エクロジャイトの弾性波速度と岩石組織

    渡辺了・小野謙弥・北野元基・樋口明良・白杉勇人・道林克禎

    日本地球惑星科学連合2011年大会 

     詳細を見る

    開催年月日: 2011年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  59. 変形岩の弾性的異方性

    渡辺了・白杉勇人・道林克禎

    日本地球惑星科学連合2011年大会 

     詳細を見る

    開催年月日: 2011年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  60. ウルトラマイロナイトとFo・Enの流動特性

    田阪美樹,平賀岳彦, 道林克禎,

    日本地質学会第117年学術大会 

     詳細を見る

    開催年月日: 2010年9月

    記述言語:日本語  

    開催地:富山大学   国名:日本国  

  61. 領家変成帯から見出される拡散クリープー転位クリープ遷移

    宮崎智美, 奥平敬元, 小川大介, 佐津川貴子, 道林克禎

    日本地質学会第117年学術大会 

     詳細を見る

    開催年月日: 2010年9月

    記述言語:日本語  

    開催地:富山大学   国名:日本国  

  62. 中部地殻条件下におけるカリ長石のレオロジー

    福田惇一, 奥平敬元, 佐津川貴子, 道林克禎

    日本地質学会第117年学術大会 

     詳細を見る

    開催年月日: 2010年9月

    記述言語:日本語  

    開催地:富山大学   国名:日本国  

  63. カリ長石の細粒化過程と変形機構の変化

    福田惇一, 奥平敬元, 佐津川貴子, 道林克禎

    日本地球惑星科学連合2010年大会 

     詳細を見る

    開催年月日: 2010年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  64. 白亜紀二枚貝イノセラムス類における真珠層の比較結晶学:予報

    生形 貴男, 杉野智子, 道林克禎

    日本地球惑星科学連合2010年大会 

     詳細を見る

    開催年月日: 2010年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  65. ゴジラムリオン中央部から採取されたはんれい岩の変形構造発達と流体による変成作用

    針金由美子, 森下知晃, 道林克禎, 小原泰彦, 田村明弘, 荒井章司

    日本地球惑星科学連合2010年大会 

     詳細を見る

    開催年月日: 2010年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  66. 変形蛇紋岩中のアンチゴライトの配列

    渡辺了, 道林克禎, 水上知行, ウォリス サイモン

    日本地球惑星科学連合2010年大会 

     詳細を見る

    開催年月日: 2010年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  67. 八方超塩基性岩体蛇紋岩の地震波速度

    渡辺了, 白杉勇人, 矢野秀明, 道林克禎

    日本地球惑星科学連合2010年大会 

     詳細を見る

    開催年月日: 2010年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  68. 東赤石岩体蛇紋岩の地震波速度

    白杉勇人, 渡辺了, 水上知行, 西井彩, ウォリス サイモン, 道林克禎

    日本地球惑星科学連合2010年大会 

     詳細を見る

    開催年月日: 2010年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  69. 付加体起源変成帯の低変成度メタチャートにおける拡散クリープ

    宮崎智美, 小川大介, 奥平敬元, 佐津川貴子, 道林克禎

    日本地球惑星科学連合2010年大会 

     詳細を見る

    開催年月日: 2010年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  70. フォルステライト―エンスタタイト系の変形特性

    田阪美樹,平賀岳彦, 道林克禎

    日本地球惑星科学連合2010年大会 

     詳細を見る

    開催年月日: 2010年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  71. キンバーライト捕獲岩の変形構造と含水量の関連性

    片山郁夫・安東淳一・道林克禎・小宮 剛

    日本地質学会第116年学術大会 

     詳細を見る

    開催年月日: 2009年9月

    記述言語:日本語  

    開催地:岡山理科大学,岡山   国名:日本国  

  72. 上部緑色片岩相~下部角閃岩相メタチャートの変形機構

    奥平敬元・小川大介・道林克禎

    日本地球惑星科学関連学会2009年大会 

     詳細を見る

    開催年月日: 2009年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  73. 沈み込み帯での強い地震波異方性は蛇紋岩による?

    片山郁夫・平内健一・道林克禎・安東淳一

    日本地球惑星科学関連学会2009年大会 

     詳細を見る

    開催年月日: 2009年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  74. 蛇紋岩の脆性ー延性転移

    清水以知子・渡辺悠太・道林克禎・高橋美樹

    日本地球惑星科学関連学会2009年大会 

     詳細を見る

    開催年月日: 2009年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  75. 蛇紋岩の脱水軟化と沈み込みスラブにおける地震発生過程

    清水以知子・渡辺悠太・道林克禎

    日本地球惑星科学関連学会2009年大会 

     詳細を見る

    開催年月日: 2009年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  76. 高温高圧変形実験による蛇紋岩のレオロジー解明:5カ年計画のまとめと次期計画の展望.

    清水以知子・渡辺悠太・道林克禎,増田俊明,熊澤峰夫

    H20年度地震研共同利用特定A:地震発生帯の素過程集会 

     詳細を見る

    開催年月日: 2009年2月

    記述言語:日本語  

    開催地:東京大学地震研究所,東京   国名:日本国  

  77. キンバーライト捕獲岩の温度圧力条件と変形組織の関係

    片山郁夫 ・ 安東淳一 ・道林克禎・小宮剛

    日本地質学会第115年学術大会 

     詳細を見る

    開催年月日: 2008年9月

    記述言語:日本語  

    開催地:秋田大学、秋田   国名:日本国  

  78. キンバーライト捕獲岩の変形組織とかんらん石すべり系の関係

    片山郁夫 ・ 安東淳一 ・道林克禎・小宮剛

    日本地球惑星科学関連学会2008年合同大会 

     詳細を見る

    開催年月日: 2008年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  79. Structural petrology of Godzilla Mullion. Mini-workshop for Godzilla Mullion IODP drilling proposal submission 国際会議

     詳細を見る

    開催年月日: 2008年3月

    記述言語:英語  

    国名:日本国  

  80. The development of shear zones within in-situ lower crust at the Godzilla mullion, Philippine sea.

     詳細を見る

    開催年月日: 2007年10月

    記述言語:英語  

    国名:日本国  

  81. スカレヴィークスハルセンの結晶質石灰岩による方解石ードロマイトの地質温度計と,離溶構造の形態

    水落裕之・クマル サティシュ・本吉洋一・道林克禎

    日本地質学会第114年学術大会 

     詳細を見る

    開催年月日: 2007年9月

    記述言語:日本語  

    開催地:北海道大学、札幌   国名:日本国  

  82. 大陸下マントル捕獲岩の変形微細組織と異方性

    片山郁夫 ・ 安東淳一 ・道林克禎・小宮 剛

    日本鉱物科学会2007年度年会 

     詳細を見る

    開催年月日: 2007年9月

    記述言語:日本語  

    開催地:東京大学、東京   国名:日本国  

  83. かんらん石の結晶方位解析による変形メカニズムの考察~三波川帯芋野かんらん岩体を例として~

    田阪美樹・鳥海光弘・道林克禎

    日本地質学会第114年学術大会 

     詳細を見る

    開催年月日: 2007年9月

    記述言語:日本語  

    開催地:北海道大学、札幌   国名:日本国  

  84. 四国中央部三波川帯東赤石岩体ざくろ石単斜輝岩の変形構造解析.

    村本政史・道林克禎

    日本地質学会第114年学術大会 

     詳細を見る

    開催年月日: 2007年9月

    記述言語:日本語  

    開催地:北海道大学,札幌   国名:日本国  

  85. フィリピン海パレスベラ海盆におけるゴジラムリオンから採取されたはんれい岩の変形微細構造解析

    針金由美子・道林克禎・小原泰彦

    日本地質学会第114年学術大会 

     詳細を見る

    開催年月日: 2007年9月

    記述言語:日本語  

    開催地:北海道大学、札幌   国名:日本国  

  86. 秋田県男鹿半島一の目潟火山カンラン岩捕獲岩の微細構造発達過程

    針金由美子・道林克禎・小原泰彦

    日本地質学会第114年学術大会 

     詳細を見る

    開催年月日: 2007年9月

    記述言語:日本語  

    開催地:北海道大学、札幌   国名:日本国  

  87. 地球深部探査船「ちきゅう」における掘削コアの肉眼記載スキームのガイドラインについて

    坂本竜彦・青池寛・阿部なつ江・安間了・飯島耕一・池原研・池原実・氏家恒太郎・海野進・片岡香子・金松敏也・木下正高・倉本真 一・斎藤実篤・坂井三郎・坂口有人・佐藤暢・佐野貴司・高橋共馬・寺林優・長橋徹・久光敏夫・眞砂英樹・町山栄章・松田博貴・横川美和・高木秀雄・佐藤幹 夫・徐垣・成瀬元・星住英夫・道林克禎・木村学

    日本地球惑星科学関連学会2007年合同大会 

     詳細を見る

    開催年月日: 2007年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  88. ACROSSによる地震発生場の構造敏感体イメージング

    藤井直之・熊澤峰夫・笠原順三・國友孝洋・中島崇裕・羽佐田葉子・長谷川健・渡辺俊樹・黄為鵬・増田俊明・里村幹夫・道林克禎,

    日本地球惑星科学関連学会2007年合同大会 

     詳細を見る

    開催年月日: 2007年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  89. 西南日本前弧起源芋野かんらん岩体の成因と構造発達過程

    田阪美樹・道林克禎・海野進

    日本地球惑星科学関連学会2007年合同大会 

     詳細を見る

    開催年月日: 2007年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  90. メノウの高温高圧変形実験による石英の微細構造発達過程の研究

    渡辺悠太・道林克禎・清水以知子・増田俊明

    日本地球惑星科学関連学会2007年合同大会 

     詳細を見る

    開催年月日: 2007年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  91. 東北日本背弧側一の目潟かんらん岩ゼノリスの微細構造発達過程

    佐津川貴子・ 道林克禎

    日本地球惑星科学関連学会2007年合同大会 

     詳細を見る

    開催年月日: 2007年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  92. ざくろ石-単斜輝石二相系のレオロジー~四国中央部東赤石岩体ざくろ石単斜輝岩を例として

    村本政史・道林克禎

    日本地球惑星科学関連学会2007年合同大会 

     詳細を見る

    開催年月日: 2007年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  93. Microstructural and petrological analysis of gabbroic rocks from the Godzilla Mullion at the Parece Vela Basin, the Philippine Sea

     詳細を見る

    開催年月日: 2007年5月

    記述言語:英語  

    国名:日本国  

  94. 蛇紋岩の脱水・変形実験:中間報告と今後の展望

    清水以知子・渡辺悠太・道林克禎

    地震研シンポジウム「地震発生帯の素過程」 

     詳細を見る

    開催年月日: 2007年3月

    記述言語:日本語  

    開催地:東京大学地震研究所,東京   国名:日本国  

  95. メノウの高温高圧変形実験による石英の微細構造発達過程の研究

    渡辺悠太・道林克禎・清水以知子・増田俊明

    地震研シンポジウム「地震発生帯の素過程」 

     詳細を見る

    開催年月日: 2007年3月

    記述言語:日本語  

    開催地:東京大学地震研究所,東京   国名:日本国  

  96. ゴジラムリオンから採取されたはんれい岩の変形微細構造解析

    針金由美子・道林克禎・小原泰彦,

    InterRidge-Japan 研究発表集会「中央海嶺研究のグローバルな展開」 

     詳細を見る

    開催年月日: 2006年11月

    記述言語:日本語  

    開催地:東京大学海洋研究所,東京   国名:日本国  

  97. 脱水反応条件下における蛇紋岩の脆性ー延性転移:歪速度の影響

    清水以知子・渡辺悠太・道林克禎

    日本地質学会第113年学術大会 

     詳細を見る

    開催年月日: 2006年9月

    記述言語:日本語  

    開催地:高知大学、高知   国名:日本国  

  98. チェコ共和国ボヘミア山塊に産するMohelnoかんらん岩体におけるかんらん石CPOの変遷

    亀井陽・小畑正明・道林克禎

    日本地質学会第113年学術大会 

     詳細を見る

    開催年月日: 2006年9月

    記述言語:日本語  

    開催地:高知大学、高知   国名:日本国  

  99. 四国中央部三波川変成岩中の芋野カンラン岩体におけるカンラン石の構造解析.

    田阪美樹・道林克禎

    日本地質学会第113年学術大会 

     詳細を見る

    開催年月日: 2006年9月

    記述言語:日本語  

    開催地:高知大学、高知   国名:日本国  

  100. ゴジラムリオンから採取されたはんれい岩の変形微細構造解析

    針金由美子・道林克禎・小原泰彦

    日本地質学会第113年学術大会 

     詳細を見る

    開催年月日: 2006年9月

    記述言語:日本語  

    開催地:高知大学、高知   国名:日本国  

  101. 一の目潟カンラン岩ゼノリスの微細構造と地震波特性

    佐津川貴子・道林克禎・阿部なつ江・岡本敦

    日本地質学会第113年学術大会 

     詳細を見る

    開催年月日: 2006年9月

    記述言語:日本語  

    開催地:高知大学、高知   国名:日本国  

  102. 四国三波川帯東赤石かんらん岩体におけるガーネッタイトの変形微細構造.

    村本政史・道林克禎

    日本地質学会第113年学術大会 

     詳細を見る

    開催年月日: 2006年9月

    記述言語:日本語  

    開催地:高知大学、高知   国名:日本国  

  103. 高温・差応力下における鉱物包有物の形態変化

    岡本敦・道林克禎

    日本地球惑星科学関連学会2006年合同大会 

     詳細を見る

    開催年月日: 2006年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  104. 圧力0.8GPaにおける蛇紋岩の脱水軟化

    清水以知子・渡辺悠太・道林克禎

    日本地球惑星科学関連学会2006年合同大会 

     詳細を見る

    開催年月日: 2006年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  105. Detachment fault at the Godzilla mullion, Parece Vela Basin, Philippine Sea

     詳細を見る

    開催年月日: 2006年5月

    記述言語:英語  

    国名:日本国  

  106. Petrophysical analyses of Ichinomegata peridotite xenoliths

     詳細を見る

    開催年月日: 2006年5月

    記述言語:英語  

    国名:日本国  

  107. 蛇紋岩の脱水軟化

    清水以知子・渡辺悠太・道林克禎

    地震研シンポジウム「地震発生帯の素過程」 

     詳細を見る

    開催年月日: 2006年3月

    記述言語:日本語   会議種別:口頭発表(一般)  

    国名:日本国  

  108. ざくろ石のEBSDを用いた微細構造解析

    村本政史・道林克禎

    変成岩などシンポジウム 

     詳細を見る

    開催年月日: 2006年3月

    記述言語:日本語  

    開催地:つくばセミナーハウス、つくば   国名:日本国  

  109. 四国中央部三波川変成岩中の芋野カンラン岩体におけるEBSDを用いた カンラン石の構造解析

    田阪美樹・道林克禎

    変成岩などシンポジウム 

     詳細を見る

    開催年月日: 2006年3月

    記述言語:日本語  

    開催地:つくばセミナーハウス、つくば   国名:日本国  

  110. IODP Exp. 304/305掘削結果:大西洋中央海嶺30°Nアトランティス岩体

    阿部なつ江・小原泰彦・E.S.Andal・淡路俊作・広瀬丈洋・石丸聡子・前田仁一郎・道林克禎・中川達功・野坂俊夫・田村明弘・富永雅子・山崎徹・IODP Exp. 304/305乗船研究者一同,

    日本地質学会第112年年会 

     詳細を見る

    開催年月日: 2005年9月

    記述言語:日本語  

    開催地:京都大学、京都   国名:日本国  

  111. 蛇紋岩のレオロジー:脱水脆性化はスラブ内地震を引き起こすか?

    清水以知子・渡辺悠太・道林克禎・増田俊明

    日本地質学会第112年年会 

     詳細を見る

    開催年月日: 2005年9月

    記述言語:日本語  

    開催地:京都大学、京都   国名:日本国  

  112. パレスベラ海盆の海洋コアコンプレックス:特にゴジラムリオンのデタッチメント断層について

    針金由美子・道林克禎・小原泰彦・沖野郷子

    日本地質学会第112年年会 

     詳細を見る

    開催年月日: 2005年9月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:北海道大学、札幌(北海道胆振東部地震のため中止)   国名:日本国  

  113. Drilling at Atlantis Massif oceanic core complex: IODP Expeditions 304/305

     詳細を見る

    開催年月日: 2005年5月

    記述言語:英語  

    国名:日本国  

  114. MK型高温高圧変形試験機における内部摩擦の評価

    清水以知子・渡辺悠太・道林克禎・増田俊明・熊澤峰夫

    日本地球惑星科学関連学会2005年合同大会 

     詳細を見る

    開催年月日: 2005年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  115. Petrography and geochemistry of basalt and diabase from IODP Expeditions 304 and 305, Atlantis Massif, Mid-Atlantic Ridge

     詳細を見る

    開催年月日: 2005年5月

    記述言語:英語  

    国名:日本国  

  116. Gabbroic rocks drilled at Site U1309, IODP Expedition 304/305, Atlantis Massif, Mid-Atlantic Ridge

    前田仁一郎・阿部なつ江・Andal Eric S.・淡路俊作・廣瀬丈洋・石丸聡子・道林克禎・中川達功・野坂俊夫・小原泰彦・田村明弘・冨永雅子・山崎徹・IODPExpedition 304/305 乗船研究者一同

    日本地球惑星科学関連学会2005年合同大会 

     詳細を見る

    開催年月日: 2005年5月

    記述言語:英語  

    開催地:幕張メッセ、千葉   国名:日本国  

  117. ベイン中のざくろ石集合体のミスオリエンテーション

    岡本敦・道林克禎

    日本地球惑星科学関連学会2005年合同大会 

     詳細を見る

    開催年月日: 2005年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  118. Structural Features of Atlantis Massif Core Complex, Mid-Atlantic Ridge: Preliminary Results from IODP Expeditions 304 and 305

     詳細を見る

    開催年月日: 2005年5月

    記述言語:英語  

    国名:日本国  

  119. MK型高温高圧変形試験機における内部摩擦の評価

    清水以知子・渡辺悠太・道林克禎・増田俊明・熊澤峰夫

    研究集会「地震発生の素過程」 

     詳細を見る

    開催年月日: 2005年

    記述言語:日本語  

    開催地:東京大学地震研究所,東京   国名:日本国  

  120. 走査型蛍光X線分析顕微鏡(XGT-2700V)を用いた層状はんれい岩の組織解析の試み

    針金由美子・道林克禎・戸田昭司

    日本地質学会第111年年会 

     詳細を見る

    開催年月日: 2004年9月

    記述言語:日本語  

    国名:日本国  

  121. 台湾中央山脈中に見られる断層関連鉱物脈の記載:その地震流体の痕跡としての重要性

    眞砂英樹・岡本和明・飯塚義之・Yui Tzen-Fu・道林克禎・針金由美子

    日本地球惑星科学関連学会2004年合同大会 

     詳細を見る

    開催年月日: 2004年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  122. 大規模シュードタキライトから推定される塑性変形領域への地震断層すべりの伝播

    林 愛明・道林克禎・丸山正・ 狩野謙一

    日本地球惑星科学関連学会2004年合同大会 

     詳細を見る

    開催年月日: 2004年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  123. 結晶包有物の形態変化における拡散過程の影響

    岡本敦・道林克禎

    日本地球惑星科学関連学会2004年合同大会 

     詳細を見る

    開催年月日: 2004年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  124. サマイル岩体マクサッド地域とフィズ岩体スクバ地域かんらん岩の微細組織.

    小田島庸浩・道林克禎

    日本地球惑星科学関連学会2004合同大会 

     詳細を見る

    開催年月日: 2004年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  125. 空孔拡散による鉱物包有物の形態変化

    岡本敦・道林克禎

    変成岩などシンポジウム 

     詳細を見る

    開催年月日: 2004年3月

    記述言語:日本語  

    開催地:河津   国名:日本国  

  126. オマーンオフィオライトフィズ北部かんらん岩体の延性剪断帯の変形微細組織構造発達過程.

    伊奈俊樹・道林克禎・金川久一

    日本地球惑星科学連合大会2018 

     詳細を見る

    開催年月日: 2003年5月

    記述言語:日本語  

    開催地:幕張メッセ、千葉   国名:日本国  

  127. ナミビア北部における原生代後期の氷河堆積物の構造解析-堆積環境の復元とスノーボールアース仮説の検証-

    平田恵梨佳・道林克禎・望月身和子

    構造地質研究会春の例会 

     詳細を見る

    開催年月日: 2003年3月

    記述言語:日本語  

    国名:日本国  

  128. 蛍光X線と回折X線の同時イメージングの可能性:変形花崗岩中の石英の回折X線イメージング

    戸上昭司・高野雅夫・道林克禎

    地球惑星科学関連学会 

     詳細を見る

    開催年月日: 1997年

    記述言語:日本語  

    開催地:名古屋大学、名古屋   国名:日本国  

  129. 中央ネパール・アンナプルナ地域・主中央衝上断層付近における石灰質片岩の変形解析

    山口はるか・道林克禎・増田俊明

    日本地質学会第103年学術大会 

     詳細を見る

    開催年月日: 1996年9月

    記述言語:日本語  

    開催地:東北大学、仙台   国名:日本国  

  130. スピネルの形態からみた夜久野オフィロライトかんらん岩体の変形構造

    猿渡和子・道林克禎・清水以知子

    日本地質学会第103年年会 

     詳細を見る

    開催年月日: 1996年9月

    記述言語:日本語   会議種別:口頭発表(一般)  

    開催地:東北大学,仙台   国名:日本国  

  131. マイロナイト中の石英プールでの水の分布

    山岸啓・中嶋悟・道林克禎

    日本地質学会第101年学術大会 

     詳細を見る

    開催年月日: 1994年9月

    記述言語:日本語  

    開催地:北海道大学、札幌   国名:日本国  

  132. 中央構造線”設楽屈曲”の存否:マイロナイトとライオライトの誤認

    吉田鎮男・道林克禎・伊藤治

    日本地質学会第101年学術大会 

     詳細を見る

    開催年月日: 1994年9月

    記述言語:日本語  

    開催地:北海道大学、札幌   国名:日本国  

  133. 回転しない剛体球のまわりの単純剪断粘性流動

    増田俊明・道林克禎・森川知行

    日本地質学会第100年学術大会 

     詳細を見る

    開催年月日: 1993年9月

    記述言語:日本語  

    開催地:東京大学、東京   国名:日本国  

  134. メノウの高温高圧変形実験による石英の微細構造発達過程の研究:予察. 国際会議

    渡辺悠太, 道林克禎, 増田俊明, 清水以知子

    日本地質学会第113年学術大会  2018年9月 

     詳細を見る

    記述言語:日本語  

    開催地:高知大学、高知  

▼全件表示

科研費 15

  1. 中央海嶺と沈み込み帯における上部マントルの変質作用の実態解明

    研究課題/研究課題番号:20H02005  2020年4月 - 2025年3月

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    高澤 栄一, 道林 克禎, M Satish‐Kumar, 野坂 俊夫

      詳細を見る

    担当区分:研究分担者 

    海洋地殻とマントルに海水がどれくらい深く浸透し,どれくらいの量の水が岩石中に蓄えられるのか,また沈み込んだスラブからマントルウェッジにどれくらいの水が浸透するのか,その実態は未だ解明されていない。そこで,オマーンオフィオライトのマントルセクションの様々な程度に変質を受けたかんらん岩を対象に,含まれる変質鉱物の偏光顕微鏡と電子顕微鏡による観察および組成分析,レーザーラマン分光分析,ファブリック解析等によって鉱物を同定し,熱力学的解析によって変質鉱物の形成環境と温度・圧力を推定する。さらに,蛇紋岩の安定同位体組成による水の起源の解析を行い,上部マントルに蓄えられる水の量を推定する。

  2. 最上部マントルの構造とモホ面の形成過程の研究~海と陸からのアプローチ~

    2016年5月 - 2021年3月

    科学研究費補助金  基盤研究(S)

      詳細を見る

    担当区分:研究代表者 

  3. 最上部マントルの構造とモホ面の形成過程の研究~海と陸からのアプローチ~

    研究課題/研究課題番号:16H06347  2016年5月 - 2021年3月

    科学研究費助成事業  基盤研究(S)

    道林 克禎, 小原 泰彦, 平内 健一, 田村 芳彦, 岡本 敦, 高澤 栄一

      詳細を見る

    担当区分:研究代表者 

    配分額:184210000円 ( 直接経費:141700000円 、 間接経費:42510000円 )

    本研究は最上部マントルの構造と地殻―マントル境界であるモホロビチッチ不連続面(モホ面)の形成過程を解明するために主に海と陸のかんらん岩について岩石組織構造解析や物性測定から岩石水反応実験まで多角的なアプローチで実施した。小笠原海溝水深6000m以深のかんらん岩の組織構造が水の影響を受けたことを確認した他、岩石水反応に関わる深部流体の新しい動態を解明した。アラビア半島オマーンオフィオライト岩体を掘削して地殻物質からマントル物質までの連続試料の回収に成功しその分析から海洋プレートにおける浸水過程を定量的に理解するための数多くの知見を得て新しいモホ面の形成モデルや最上部マントル構造モデルを構築した。
    惑星地球は岩石および水・有機物など多様な物質が数千万年単位の長期間にわたり大循環することによって生命を宿す温暖な表層環境と海洋を安定させている太陽系唯一の惑星である。本研究課題は地球表層の7割を覆う海洋底基盤である海洋プレートの物質科学的特徴を掘削科学のアプローチから研究し岩石と水との親和性を解明することを目的とした。研究成果として海水が海洋底から海洋地殻をとおりその下位に分布するマントル物質に到達して海洋プレート深部にまで浸透して貯留されている可能性を明らかにした。この成果は海洋底への水の影響が現在の見積りよりも大きいことを示唆しており大きな学術的意義をもつ。

  4. オマーンオフィオライト陸上掘削による地殻-マントル境界の物性とモホ面の実態解明

    研究課題/研究課題番号:16H02742  2016年4月 - 2020年3月

    高澤 栄一

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    担当区分:研究分担者 

    国際陸上科学掘削計画(ICDP)オマーン掘削プロジェクトに参加し,オマーンオフィオライトの地殻ーマントル境界相当層の陸上掘削を実施した。ワジ・タイン岩体のCM1A孔とCM2B孔において,100%の回収率で掘削コアの完全採取に成功した。掘削の結果,地殻とマントルの境界には,ダナイトを主体とする150m厚の岩相が存在することが明らかとなった。深度方向の全岩および鉱物科学組成の変化から,ハルツバージャイトと玄武岩質メルトとの反応によってダナイトが形成された過程が明らかとなった。また,コアの物性解析から,蛇紋岩化を被ったマントルは下部地殻よりも地震波速度がかなり低下することが明らかとなった。
    ICDPオマーン掘削プロジェクトの実行には,参加各国のマッチングファンドが不可欠である。日本チームが独自の資金で独自の掘削孔を提案し,地球深部探査船「ちきゅう」船上で掘削コアの記載および解析の実現に協力したことは国際的に重要な科学貢献となった。本研究では掘削されたコアの詳細な分析を行うとともに,掘削孔を利用して最先端の孔内検層ツールを導入し物性データ取得も行った。さらに,掘削したコアを地球深部探査船「ちきゅう」の最新設備を用いて研究者の指導のもとに学生が集中的に記載・解析するという独創的な方法を行った。この成果は,海洋地殻ーマントル深部掘削のへの大きな波及効果が期待される。

  5. ほぼ全ての溶岩に適用可能な酸化還元状態決定法の開発

    研究課題/研究課題番号:26610160  2014年4月 - 2016年3月

    道林 克禎

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    担当区分:研究代表者 

    配分額:3380000円 ( 直接経費:2600000円 、 間接経費:780000円 )

    島弧火山のマグマだまりにおける酸化還元状態について明らかにするため,富士山1707年宝永噴火のハンレイ岩捕獲岩について酸素フュガシティ(fO2)条件を検討した.ハンレイ岩の多くはイルメナイトとマグネタイトの両方を含むので、FeTi酸化物温度・酸素シュガシティ計を適用することで,鉱物化学組成から平衡温度・fO2条件を見積もった.捕獲岩を地表までもたらした母岩マグマの影響を避けて平衡温度・fO2条件を見積もった結果,760-940℃,QMF+0.6~+2の値を得た.

  6. マントルウェッジカンラン岩のレオロジーと変成プロセス

    研究課題/研究課題番号:22244062  2010年4月 - 2014年3月

    道林 克禎

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    担当区分:研究代表者 

    配分額:41340000円 ( 直接経費:31800000円 、 間接経費:9540000円 )

    本研究では,かんらん岩の主構成鉱物であるかんらん石の結晶方位ファブリックとマントルのテクトニックな背景との関係について世界中のかんらん岩について精査した.かんらん石の変成鉱物として生じた蛇紋石(アンチゴライト)の結晶方位ファブリックの特徴とかんらん石ファブリックの関係を定量的に明らかにした.かんらん石とアンチゴライトの結晶方位の異なる岩石について弾性波速度を実測して,それぞれの鉱物の結晶方位異方性の強さが地震波異方性にどのような変化を与えるのか明らかにした.青色片岩の主構成鉱物である藍閃石とローソン石のファブリックの発達度合いから沈み込んだ海洋地殻のレオロジーと地震波異方性の効果を示した.

  7. オマーンに湧出する高アルカリ泉から学ぶアルカリ環境の地球・生物資源科学

    研究課題/研究課題番号:21404017  2009年 - 2011年

    佐藤 努

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    担当区分:研究分担者 

    オマーンの山岳地帯に多数湧出する高アルカリ泉(pH11-12程度)において、高アルカリ環境で未解決な課題を有する様々なディシプリンの研究者が集結し、高アルカリ泉を作り出す地質学的条件とその地球科学・地球工学的インパクトの解明、高アルカリ環境に適応した微生物群集や動物種のスクリーニングとその適応機構の解明、自然が作り出したコンクリートの長期挙動とその生成に学ぶ二酸化炭素貯留法の解明等を目的した調査・研究を進めた。その結果、以下の内容が明らかとなった;1)高アルカリ泉を作り出す地殻ーマントル境界に発達したマントル延性剪断帯の構造とその発達、(2)高アルカリ環境における炭酸塩鉱物の生成とその速度式、(3)高アルカリ環境において生成する炭酸塩鉱物、特にアラゴナイトによって無機陰イオンの移行遅延、および前駆物質であるモノハイドロカルサイトの存在と特性の重要性、(4)高アルカリ温泉水のδD値は、これまで報告されている地表水として世界でも最も高い値を示し、高アルカリ泉の性状は超塩基性岩-水反応を反映した水質であったこと、(5)高アルカリ泉からの新規微生物遺伝子や炭酸塩形成候補菌の分離・同定、(6)高アルカリ泉の周囲に3種の淡水魚と1種の無尾両生類の棲息確認とアルカリ温泉水への適応機能、(7)高アルカリ泉周辺で生成している天然コンクリートの高強度コンクリートに匹敵するほどの高い-軸圧縮強度。

  8. プチスポット総合研究.岩石学と海域調査:海洋リソスフェア発達過程解明に向けて

    研究課題/研究課題番号:20340124  2008年 - 2011年

    阿部 なつ江

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    担当区分:連携研究者 

    海洋プレートの非活動域に発見された新種の火山「プチスポット火山」海域において、地球物理学的・地質学的調査および岩石試料採取を実施してきた。同試料・データは、東北沖日本海溝に沈み込む前の海洋プレートそのものであり、陸側プレートに与える影響や島弧における火山および地震活動を評価する上で、重要な試料・データをもとに、海洋プレートとその下のマントル構造について総合的な研究・調査を行った。

  9. マントルウェッジ前弧側のマントル流動と地震波特性

    研究課題/研究課題番号:19340148  2007年 - 2009年

    道林 克禎

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    担当区分:研究代表者 

    配分額:18720000円 ( 直接経費:14400000円 、 間接経費:4320000円 )

    本研究プロジェクトは,マントルウェッジの背弧側,火山フロント,前弧側,海溝からそれぞれ採取されたカンラン岩の構造解析を進めた結果,日本列島の土台となっているマントルウェッジの最上部マントルは,海洋プレートのものと類似した構造をしていることがわかった.

  10. 沈み込みプレート境界の地震発生における脱水反応の役割

    研究課題/研究課題番号:19340147  2007年 - 2009年

    清水 以知子

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    担当区分:研究分担者 

    沈み込みスラブの2重震発面における地震発生メカニズムとして,蛇紋岩化したマントルの脱水脆性化説が有力視されてきた.しかし従来のガス圧式変形試験機による実験は地下15kmまでの条件に限られており,同じメカニズムを深さ200kmにおよぶ沈み込みスラブの中深発地震にあてはめることはできない.そこで我々は固体圧式変形試験機によって,より高圧における蛇紋岩の力学的挙動を調べるとともに,実験試料の変形組織を観察し,従来の学説とは異なる「脱水軟化」現象を明らかとした.

  11. 地殻浅部-深部の震源断層の摩擦溶融プロセス・変形機構の解明

    研究課題/研究課題番号:18340158  2006年 - 2009年

    林 愛明

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    担当区分:研究分担者 

    1).本研究では,大地震時の地震断層破壊は地表浅部から地下25~35キロより深い地殻深部まで及んでいることが初めて明らかにされた.また,高速摩擦実験行い,断層摩擦熱による蛇紋岩の大量脱水とそれによる地震断層強度が著しく低下したことを実証した.
    2).2008年5月12日に発生したMs8.1の四川大地震(〓川地震)に伴い地表に現れた地表地震断層の現地調査を行った.その結果,〓川地震に伴って総延長285キロメートル以上,最大垂直変位量6.5メートルの地表地震断層が既存の龍門山逆断層帯沿いに現れたことが明らかになった.
    3).地震断層に関連した地震物質学的な研究も行った.

  12. 地震発生場の能動監視における観測量と地殻の構造敏感性の相互関係

    研究課題/研究課題番号:17540396  2005年 - 2006年

    熊澤 峰夫

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    担当区分:研究分担者 

    本研究は、地震発生場の時間発展を監視観測によって合理的に把握するため、Marriage of Rocks & Waves「物質研究と観測研究をつなぐ象徴的標語」を目指して、観測+実験+理論による物質科学研究と波動による観測研究を有機的にリンクさせることを目的とした。
    本年度は、アクロスの実用化によって東海地震の想定断層面のマッピング計画が静岡大学を拠点として始まり、名古屋大学から移管されだ小型アクロス送信装置による静岡大学キャンパス内における送信システムの確立、実証データの取得およびデータ処理・解析法の開発を行った.また,アクロス研究に関する研究集会を開催し,今後の実施計画及び国際対応について議論した.
    物質科学研究としては,静岡大学所有の高温高圧変形実験装置を用いて石英の微細構造発達過程についてメノウを出発物質として行った。実験条件の温度700-800℃では石英は最大圧縮方向に高角な粒子の方が低角な粒子よりもprism<c>すべりによって結晶方位定向配列を発達させることがわかった.これに対して最大圧縮方向に低角な粒子は,粒界移動再結晶作用によって粗粒化することが観察された.その結果、石英のC軸の結晶方位定向配列と最大圧縮応力方向との関係が微細構造発達に影響を与えることがわかった.
    本研究中に物質科学研究と波動による観測研究をリンクさせることまで達成したとは言い難いが,Marriage of Rocks & Wavesに向けての方向性は示せたので,今後の次世代の活躍に期待したい.

  13. ナノスケールでの岩石の力学的不均質性の定量化

    研究課題/研究課題番号:16340152  2004年 - 2006年

    増田 俊明

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    担当区分:研究分担者 

    石英単結晶の表面に形成された微小圧痕の周辺がどのように変形しているのかを,ラマン分光やSEM-EBSD,レーザー顕微鏡を駆使して検討した。その結果,圧痕周辺には数ギガパスカルの応力が生じ、またドフィネ式双晶が生じていることがわかった。
    石英表面に圧痕を作るのに,超微小硬度計と高温微小硬度計を利用した。使用した圧子は,バーコビッチ三角錐圧子と三角錐68°圧子で,加えた荷重は最大で1N,温度は最高で約290°Cである。ラマン分光学的研究では,圧痕内部で通常の石英が呈するラマンピークの波数とは異なるものや,ピークが二つに分裂しているものを発見した。このことは,圧痕周辺に残留歪があることを示しており,ピークシフトの量から,その歪を生じさせた残留応力が最大で2。5GPa以上であることを見いだした。また,残留応力は圧痕から離れると急激に減少することも解った。SEM-EBSD法による観察では,圧痕周辺に特徴的なドフィーネ式双晶が存在することを見いだした。双晶の分布が圧痕と非常に密接に関係していることから,これが変形双晶であることを示した。ドフィーネ式双晶は規則的ではなく,特に試料中に既にこの双晶が存在する場合には,圧痕形成時に双晶が形成されないことも観察している。
    石英多結晶体(メタチャート)を試料として、石英粒子の結晶粒界を横切って、マイヤー硬度の測定を行った.その結果,結晶の粒界でマイヤー硬度が著しく下がっている場合があることを確認した。なぜそうなるのかについて目下検討中である.

  14. 突発的高歪度場における岩石の高速剪断延性流動メカニズムの研究

    研究課題/研究課題番号:16340151  2004年 - 2006年

    道林 克禎

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    担当区分:研究代表者 

    配分額:11400000円 ( 直接経費:11400000円 )

    本研究は,最も細粒化した地震断層岩であるウルトラマイロナイトが,巨大地震によって一時的に地下深部の塑性領域に出現する所謂「突発的」高歪速度場で形成されるかどうか検討することを目的とした.本研究期間内に、サブミクロンスケールの極細粒の鉱物から構成されたウルトラマイロナイトの超微細構造に対するSEM/EBSD解析法を確立し,世界各地の形成条件の異なるウルトラマイロナイトと高速摩擦すべりによって岩石が溶けて形成したシュードタキライトの超微細構造解析の比較から,これらの地震断層岩が形成された物理条件(特に温度と歪速度)を明らかにしようとした.
    研究成果として,SEM/EBSD解析法がほぼ確立した.また,超微細構造の発達は複数の鉱物が混ざることで進展していることを明らかにした.しかし,超微細粒子の複数の鉱物を分けて結晶方位解析を行うためには,SEM/EBSD法だけでは困難であり,元素マップなどの化学組成の情報が必要であることがわかった.一方,比較的粒子サイズの大きな微細構造をもつウルトラマイロナイトについては,SEM/EBSD法によって結晶方位定向配列や結晶方位マップが作成され,その変形メカニズムに転位クリープばかりでなく,粒界すべりが関与していることがわかった.さらに,SEM/EBSD法の活用としてかんらん岩の構造解析を進めた結果,現在国内外で論争になっている水を含む環境下で形成されるB-typeの結晶方位定向配列を発見した.

  15. 地殻変形と流体の相互作用に関する実験的研究

    研究課題/研究課題番号:16340150  2004年 - 2006年

    清水 以知子

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    担当区分:研究分担者 

    地殻岩石のレオロジカルな性質は,間隙を占めるH2O流体や結晶粒界の水の薄層,そして結晶内部に溶け込んだ少量の水によって大きく影響される.地殻変形に及ぼす水の効果を調べるため,静岡大学理学部所有の固体圧式変形試験機MK65Sを整備し,1GP・1000℃におよぶ高温高圧条件下で高精度の力学データを取得する実験手法を確立した.メノウおよび蛇紋岩(主としてアンチゴライト)の円筒形試料を初期物質にもちいて定歪速度試験を行なった.いずれの試料も,高温において自由水を放出する.メノウの試料は再結晶により石英の多結晶体になり,定常クリープ挙動を示す.石英のc軸ファブリックは圧縮軸方向に集中し,歪エネルギーに駆動された結晶粒界移動によるものと推定される.高温高圧実験の前後のサンプルの含水量の変化は赤外顕微鏡によって測定した.蛇紋岩の変形実験は封圧800MPaにおいて,脱水温度以下の500℃と脱水温度を超える700℃で行なった.実験試料は銀のチューブとディスクで覆い,いくつかの実験では700℃または750℃において0.5-1時間静的条件でアニーリング(予備加熱)した後に変形させた.500℃の実験では差応力が1GPaに達しても降伏しなかった.予備加熱をせずに700℃で変形させた実験においても,サンプルは高い強度を示したが,予備加熱を行なった試料の700℃の実験では顕著な軟化とクリープ挙動を示した.脱水反応に伴う間隙の生成と破壊が蛇紋岩の脆性-延性転移を起こしていると推察される.これらの結果から,蛇紋岩の脱水が二重震発地震面におけるスラブ内地震を誘起することが示唆される.

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担当経験のある科目 (本学) 2

  1. 岩石学

    2019

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    岩石学の基礎を学ぶ

  2. 地球ダイナミクス

    2019

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    地球変動学の基礎を学ぶ

担当経験のある科目 (本学以外) 1

  1. Geodynamics

    Nagoya University)

 

メディア報道 1

  1. コズミック フロント☆NEXT テレビ・ラジオ番組

    NHK  コズミック フロント☆NEXT  NHK BSプレニアム  2018年4月

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    地球 謎の大絶滅史 「史上最大の大量絶滅 真犯人を追え!」オマーン掘削プロジェクトの紹介者として出演