2013 Fiscal Year Final Research Report
Comprehensive dynamics of subduction zone interior: insights from formation and exhumation of serpentinite melange
| Project/Area Number |
22540464
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geology
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| Research Institution | Hirosaki University |
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Principal Investigator |
UEDA Hayato 弘前大学, 教育学部, 准教授 (70374197)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | サブダクションチャネル / 蛇紋岩 / 高圧変成岩 |
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| Research Abstract |
At deep portions of subduction zones, where an oceanic plate is being subducted, it is widely believed that water fluid expelled from the subducted plate reacts with the overlying mantle to produce serpentinites. Serpentinite melange is a mixture of serpentinite with fragments of the subducted oceanic plate (metamorphic rocks), and represents geologic components and structure of deep inside an ancient subduction zone. In this study, I made field mapping and petrological studies on serpentinites exposed in Mitsuishi-Horaisan and Horokanai areas of Hokkaido and Ohmachi Seamount at seafloor off Ogasawara.and reconstructed structure and dynamics of deep subduction zones.
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[Journal Article] Seafloor geology of the basement serpentinite body in the Ohmachi Seamount (Izu-Bonin arc) as exhumed parts of a subduction zone within the Philippine Sea, In Ogawa, Y., Anma, R., and Dilek, Y. eds.2011
Author(s)
Ueda, H., Niida, K., Usuki, T., Hirauchi, K., Meschede, M., Miura, R., Ogawa, Y., Yuasa, M., Sakamoto, I., Chiba, T., Izumino, T., Kuramoto, Y., Azuma, T., Takeshita, T., Imayama, T., Miyajima, Y., and Saito, T
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Journal Title
Accretionary Prisms and Convergent Margin Tectonics in the Northwest Pacific Basin, Springer
Pages: 97-128
Peer Reviewed
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