Petrology and tectonics on the mantle peridotite from southern Mariana fore arc
| Project/Area Number |
25400492
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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 |
Geology
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| Research Institution | Fukada Geological Institute |
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Principal Investigator |
Ishii Teruaki 公益財団法人深田地質研究所, その他部局等, 研究員 (80111582)
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| Co-Investigator(Kenkyū-buntansha) |
Ohara Yasuhiko 国立研究開発法人海洋研究開発機構, 深海地殻内生物圏研究分野, 招聘主任研究員 (10470121)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 南部マリアナ海溝 / 海底地質断面 / 蛇紋岩冷湧水系 / 南東マリアナ前弧リフト / しんかい湧水域 / 深海生物群集 / 橄欖岩海嶺 / ブルーサイトチムニー / 冷湧水性チムニー / シロウリガイ / チューブワーム / マントル橄欖岩 / マントルかんらん岩 / 海溝陸側斜面 / 炭酸塩チムニー / シロウリガイコロニー / Shinnkai Seep Field / Shinkai Seep Field |
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| Outline of Final Research Achievements |
The 3000 km long Izu-Bonin-Mariana (IBM) arc system is an outstanding example of a nonaccretionary intraoceanic convergent plate margin. The trench inner wall (forearc) exposes so similar lithologies found in many land ophiolites, the igneous rocks exposed in the IBM forearc represents an in situ supra-subduction zone ophiolite. Along the southern Mariana trench inner wall (forearc), we have been investigating using the DSV Shinkai 6500. The discovery includes (A) a very young volcanic region of forearc rifting unusually close to the trench axis in SSW of Guam; the Southeast Mariana Forearc Rift (SEMFR), (B) a serpentinite-hosted deep sea ecosystem near the Challenger Deep; the Shinkai Seep Field (SSF), (C) a very shallow peridotite ridge consists of fresh mantle rocks, near trench axis in west of the Challenger Deep, of which ridge may be induced by colliding Caroline Ridge.
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Report
(4 results)
Research Products
(87 results)
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[Journal Article] Natural olivine crystal-fabrics in the western Pacific convergence region: a new method to identify fabric type2016
Author(s)
Michibayashi, K., Mainprice, D., Fujii, A., Uehara, S., Shinkai, Y., Kondo, Y., Ohara, Y., Ishii, T., Fryer, P., Bloomer, S. H., Ishiwatari, A., Hawkins, J. and Ji, S.
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Journal Title
Earth and Planetary Science Letters
Volume: 443
Pages: 70-80
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Missing western half of the Pacific Plate: Geochemical nature of the Izanagi–Pacific Ridge interaction with a stationary boundary between the Indian and Pacific mantles2015
Author(s)
Miyazaki, T., J.-I. Kimura, R. Senda, B. S. Vaglarov, Q. Chang, T. Takahashi, Y. Hirahara, F. Hauff, Y. Hayasaka, S. Sano, G. Shimoda, O. Ishizuka, H. Kawabata, Naoto Hirano, S. Machida, T. Ishii, K. Tani, T. Yoshida
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Journal Title
Geochem. Geophys. Geosyst
Volume: 16
Pages: 3309-3332
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Low- and high-temperature alterations of volcanic rocks in the northwestern Philippine Sea, and association with volcanic settings2014
Author(s)
Haraguchi, S., Ishizuka, H., Ishii, T., Fujioka, K., Yuasa, M., and Shibasaki, H.
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Journal Title
Island Arc
Volume: 23
Pages: 324-343
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Geochemistry and mineralogy of REY-rich mud in the eastern Indian Ocean2014
Author(s)
Yasukawa, K., Liu, H., Fujinaga, K., Machida, S., Haraguchi, S., Ishii, T., Nakamura, K., and Kato, Y.
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Journal Title
Journal of Asian Earth Sciences
Volume: 93
Pages: 25-36
Related Report
Peer Reviewed / Acknowledgement Compliant
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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., J.-I. Kimura, S. Machida, T. Ishii, A. Ishiwatari, S. Maruyama, H.-N. Qiu, T. Ishikawa, Y. Kato, S. Haraguchi, N. Takahata, Y. Hirahara, and T. Miyazaki
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Journal Title
Journal of Petrology
Volume: 56
Pages: 1149-1175
Related Report
Peer Reviewed
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[Presentation] The first Shinkai dive study of the southwestern portion of the Mariana arc system2014
Author(s)
Ohara, Y., F. Martinez, M. Brounce, I. Pujana, T. Ishii, R. J. Stern, J. Ribeiro, K. Michibayashi, K. Kelley, M. K. Reagan, H. Watanabe, T. Okumura, and YK14-13 science party
Organizer
Ａｍｅｒｉｃａｎ Ｇｅｏｐｈｙｓｉｃａｌ Ｕｎｉｏｎ 2014 Fall Meeting
Place of Presentation
Ｓａｎ Ｆｒａｎｃｉｓｃｏ
Year and Date
2014-12-15 – 2014-12-19
Related Report
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[Presentation] Petit-spot and geology in NW Pacific2014
Author(s)
Naoto HIRANO, Masao NAKANISHI, Shiki MACHIDA, Junji YAMAMOTO and Teruaki ISHII
Organizer
Geological Society of America, 2014 Annual Meeting
Place of Presentation
Vancouver, Canada,
Year and Date
2014-10-19 – 2014-10-22
Related Report
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[Presentation] Os isotope heterogeneity in the Pacific uppermost mantle2014
Author(s)
Ishikawa, A., Senda, R., Tani, K., Suzuki, K., Ishii, T
Organizer
6th International Orogenic Lherzolite Conference
Place of Presentation
Marrakech, Morocco
Year and Date
2014-05-04 – 2014-05-15
Related Report
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[Presentation] New insights into the Philippine Sea evolution: results from the recent Godzilla Megamullion study
Author(s)
Ohara, Y., J.E. Snow, K. Michibayashi, H.J.B. Dick, Y. Harigane, K. Tani, W. Nelson, M. Loocke, A. Sanfilippo, O. Ishizuka, H. Yamashita, and T. Ishi
Organizer
日本地球惑星科学関連学会2013年合同大会
Place of Presentation
千葉県千葉市幕張メッセ
Related Report
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