2013 Fiscal Year Final Research Report
Diversity and subduction zone processes of Paleozoioc ophiolites in Japan
| Project/Area Number |
23540554
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Tohoku University |
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Principal Investigator |
ISHIWATARI Akira 東北大学, 東北アジア研究センター, 教授 (90184572)
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| Project Period (FY) |
2011 – 2013
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| Keywords | オフィオライト / 超苦鉄質岩 / マントルかんらん岩 / 付加体緑色岩 / 巨大火成岩区LIP / 北上・阿武隈帯 / モンゴル造山帯 / クロムスピネル |
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| Research Abstract |
We have published a paper on ultramafic rock bodies of the Paleozoic ophiolites in Northeast Honshu, reporting their petrologic diversity and discussing their origin in comparison with the well-studied Hayachine-Miyamori ophiolite and spinel grains in the Mesozoic and Paleozoic clastic sedimentary rocks. However, ultramafic rocks in the Abukuma Mountains are possible to be fragments of a Jurassic ophiolite of the Gosaisho zone, and further studies are needed to verify this possibility. Paleozoic and Triassic greenstones and associated sedimentary rocks were studied in the northern Kitakami Mountains, and we are preparing a paper to discuss their oceanic plateau magmatism and subsequent accretionary processes. We also published a paper on the Mongolian Paleozoic greenstones, and compared them with the well resembling Japanese examples.
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[Journal Article] Middle Paleozoic greenstones in the Hangay region, central Mongolia: Remnants of an accreted oceanic plateau and forearc magmatism2013
Author(s)
Erdenesaihan, G., Ishiwatari, A., Orolmaa, D., Arai, S., Tamura, A
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Journal Title
Journal of Mineralogical and Petrological Sciences
Volume: 108
Pages: 303-325
Peer Reviewed
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[Journal Article] High-Mg adakite and low-Ca boninite from a Bonin fore-arc seamount: implications for the reaction between slab melts and depleted mantle2013
Author(s)
Li, Y.-B., Kimura, J.-I., Machida, S., Ishii, T., Ishiwatari, A., Maruyama, S., Qiu, H.-N., Ishikawa, T., Kato, Y., Haraguchi, S., Takahata, N., Hirahara, Y., Miyazaki, T
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Journal Title
Journal of Petrology
Volume: 54
Pages: 1149-1175
Peer Reviewed
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[Journal Article] High-pressure ultramafics in the lower crustal rocks of the Pekulney complex, central Chukotka Peninsula. 1. Petrography and mineralogy, 2. Internal structure of blocks and ultramafic bodies, geologic and geodynamic setting of rock formations2013
Author(s)
Bazylev, B. A., Ledneva, G. V., Kononkova, N. N., Ishiwatari, A
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Journal Title
Petrology
Volume: 21
Pages: 221-248, 336-350
Peer Reviewed
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[Journal Article] Picrites in central Hokkaido: Evidence of extremely high temperature magmatism in the Late Jurassic ocean recorded in an accreted oceanic plateau2012
Author(s)
Ichiyama, Y., Ishiwatari, A., Kimura, J.-I., Senda, R., Kawabata, H. & Tatsumi, Y
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Journal Title
Geology
Volume: 40
Pages: 411-414
Peer Reviewed
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[Presentation] A comparative petrological study of the Siberian and Ethiopian Large Igneous Provinces (LIPs) and a case study on Triassic mafic rocks in Chukotka, NE Russia2013
Author(s)
Desta, M. T., Ishiwatari, A, Machi, A., Ledneva, G. V., Sokolov, S. D., Moiseev, A.V., Bazylev, B. A
Organizer
American Geophysical Union 2013 Fall Meeting
Place of Presentation
San Francisco, California, USA
Year and Date
2013-12-13
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[Presentation] A comparative petrological study of the Siberian and Ethiopian Large Igneous Provinces (LIPs) and a case study on Triassic mafic rocks in Chukotka, NE Russia2012
Author(s)
Desta, M.T., Ishiwatari, A., Machi, S., Ledneva, G.V., Sokolov, S.D., Moiseev, A., Bazylev, B.A
Organizer
American Geophysical Union 2012 Fall Meeting
Place of Presentation
San Francisco, USA
Year and Date
2012-12-07
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