Production of primary magma and development of incipient arc on a hot subduction zone
| Project/Area Number |
26800260
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geology
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| Research Institution | National Institute of Advanced Industrial Science and Technology (2015-2016)
Kanazawa University (2014) |
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Principal Investigator |
Kusano Yuki 国立研究開発法人産業技術総合研究所, 活断層・火山研究部門, 研究員 (00635972)
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| Co-Investigator(Renkei-kenkyūsha) |
UMINO Susumu 金沢大学, 自然システム学系, 教授 (30192511)
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| Research Collaborator |
ISHIZUKA Osamu 国立研究開発法人産業技術総合研究所, 活断層・火山研究部門, 主任研究員
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 沈み込み帯 / 初生マグマ / オマーンオフィオライト / 無人岩 / 火山地質学 / ガラス包有物 |
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| Outline of Final Research Achievements |
Based on the volcanology of infant arc volcanic edifices in the Oman Ophiolite, and the temporal geochemical changes, subduction initiation is revealed as follows: (1) paleo-arc volcanos composed of piled-up volcanos with several vents 2-5 km interval; (2) geochemical change from arc tholeiite to boninite magma was quantitively explained by contribution rate between slab-derived fluid and sedimentary melt; (3) Mantle potential temperature of the paleo-infant arc magma is estimated to 1400 °C. It is correlated with proto-arc spreading magmatism, and supported by our high-temperature subduction initiation model.
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Report
(4 results)
Research Products
(11 results)
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[Presentation] Evolutionary processes of initial arc magma yield from hot subduction zone reference from the Oman Ophiolite2015
Author(s)
Kusano, Y., Umino, S., Kitamura, K., Adachi, Y., Shinjo, R., Miyashita, S.
Organizer
Japan Geoscience Union Meeting 2015
Place of Presentation
千葉
Year and Date
2015-05-26
Related Report
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