Linkage between the basement rocks of the SE Asia and the proto-Philippine Sea Plate: Reconsidering the intra-oceanic nature of the IBM Arc
Project/Area Number |
24684037
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Research Category |
Grant-in-Aid for Young Scientists (A)
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Allocation Type | Partial Multi-year Fund |
Research Field |
Geology
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Research Institution | National Museum of Nature and Science, Tokyo (2014) Japan Agency for Marine-Earth Science and Technology (2012-2013) |
Principal Investigator |
TANI Kenichiro 独立行政法人国立科学博物館, 地学研究部, 研究員 (70359206)
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Research Collaborator |
ISHIZUKA Osamu 産業技術総合研究所, 地質調査総合センター, 主任研究員 (90356444)
UEDA Hayato 新潟大学, 理学部, 准教授 (70374197)
GABO Jillian A. S. 九州大学, 地球資源システム工学部門, 非常勤研究員
DIMALANTA Carla フィリピン大学ディリマン校, 地質科学研究所, 教授
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2012: ¥12,220,000 (Direct Cost: ¥9,400,000、Indirect Cost: ¥2,820,000)
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Keywords | 東南アジア / フィリピン海プレート / ジルコン年代 / 花崗岩 / 変成岩 / テクトニクス / 古フィリピン海プレート / フィリピン / 台湾 / 基盤岩 / 島弧マグマ活動 / ジルコン年代測定 / 大陸地殻形成 / 中生代 |
Outline of Final Research Achievements |
The Izu-Bonin-Mariana (IBM) Arc has been regarded as a typical intra-oceanic arc. However, little is known about the crustal structure of proto-Philippine Sea Plate (PSP), which existed during the subduction initiation in the Eocene. Submersible observations and rock sampling in the Daito Ridges, located in the NW PSP, revealed that the parts of the proto-PSP consist of continental granitic and metamorphic rocks with Mesozoic zircon ages. To understand the origin of Mesozoic proto-PSP, comprehensive geological survey of the Philippine basement rocks were conducted. As a result, geochemical characteristics and zircon ages obtained from igneous basement complexes exposed in the SE Philippines match well with those of the Mesozoic rocks obtained from the Daito Ridges. This suggests that subduction of the IBM Arc initiated on the preexisting Mesozoic arc crust, correlating to the current SE Philippines, and later acquired intra-oceanic-like setting through formation of the backarc basins.
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Report
(4 results)
Research Products
(21 results)
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[Journal Article] Zircon U-Pb age and its geological significance of late Carboniferous and Early Cretaceous adakitic granites from eastern margin of the Abukuma Mountains, Japan2014
Author(s)
Tsuchiya, N., Takeda, T., Tani, K.,, Adachi, T., Nakano, N., Osanai, Y., Kimura, J.-I.
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Journal Title
Journal of the Geological Society of Japan
Volume: 120
Pages: 37-51
NAID
Related Report
Peer Reviewed
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[Journal Article] Multichronologic data for OD-3 zircon standard from Japan: A round-robin test2013
Author(s)
H.Iwano, Y. Orihashi T. Hirata, M. Ogasawara, T. Danhara, K. Horie, N. Hasebe, S. Sueoka, A. Tamura, Y. Hayasaka, A. Katsube, H. Ito, K. Tani,J. Kimura, Q. Chang, Y. Kouchi, Y.Haruta, K. Yamamoto
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Journal Title
Island Arc
Volume: 22
Issue: 3
Pages: 382-394
DOI
Related Report
Peer Reviewed
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[Journal Article] The earliest mantle fabrics formed during subduction zone infancy2013
Author(s)
Harigane, Y., Michibayashi, K., Morishita, T., Tani, K., Dick, H. and Ishizuka, O.
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Journal Title
Earth and Planetary Science Letters
Volume: 377-378
Pages: 106-113
DOI
Related Report
Peer Reviewed
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[Journal Article] Petrogenesis of the Kaikomagatakegranitoid pluton in the Izu Collision Zone:central Japan: implications fortransformation.2012
Author(s)
Saito, S., Arima, M., Nakajima, T.,Tani, K., Miyazaki, T., Senda, R., Chang,Q., Takahashi, T., Hirahara, Y., Kimura, J.
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Journal Title
Contributions toMineralogy and Petrology
Volume: 163
Issue: 4
Pages: 611-629
DOI
Related Report
Peer Reviewed
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[Presentation] New constraints for the tectonic development of the western Pacific margin since the Mesozoic: comprehensive SHRIMP zircon U-Pb dating of the Philippine ophiolite belts2014
Author(s)
K. Tani, J.A. Gabo, K. Horie, O. Ishizuka, J. Padrones, B. Payot, M.L. Tejada, D. Faustino-Eslava, A. Imai. S. Arai, G. Yumul, and C. Dimalanta
Organizer
American Geophysical Union Fall Meeting 2014
Place of Presentation
アメリカ・サンフランシスコ
Year and Date
2014-12-19
Related Report
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[Presentation] New temporal constraints for the tectonic development of the Philippine ophiolite belts from comprehensive SHRIMP zircon U-Pb dating2014
Author(s)
K. Tani, J.A.S. Gabo, K. Horie, O. Ishizuka, J. Padrones, B.D. Payot, M.L.G. Tejada, D.V. Faustino-Eslava, A. Imai, S. Arai, T. Hokada, G.P. Yumul Jr., and C.B. Dimalanta
Organizer
Geological Society of the Philippines Annual Geological Conference 2014 (GEOCON2014)
Place of Presentation
フィリピン・マニラ
Year and Date
2014-12-10
Related Report
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[Presentation] Izu-Bonin Arc : Intra-oceanic from the beginning? Unraveling the crustal structure of the Mesozoic proto- Philippine Sea Plate2012
Author(s)
K.Tani, O. Ishizuka, H. Ueda, H.Shukuno, Y. Hirahara, A.R.L.Nichols, D.J. Dunkley, K. Horie, A.Ishikawa, T. Morishita, Y. Tatsumi
Organizer
American Geophysical Union Fall Meeting
Place of Presentation
サンフランシスコ(アメリカ)
Year and Date
2012-12-03
Related Report
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