Study of fluids in subduction zones : Partitioning between aqueous fluids and magmas
| Project/Area Number |
21340160
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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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 | Kyoto University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
KOGISO Tetsu 京都大学, 大学院・人間・環境学研究科, 准教授 (60359172)
YAMAMOTO Junji 京都大学, 大学院・理学研究科, 助教 (60378536)
MIYAKE Akira 京都大学, 大学院・理学研究科, 准教授 (10324609)
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| Project Period (FY) |
2009 – 2011
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| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥14,300,000 (Direct Cost: ¥11,000,000、Indirect Cost: ¥3,300,000)
Fiscal Year 2011: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2010: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2009: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
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| Keywords | マグマ / 水 / スラブ / 沈み込み帯 / 超臨界流体 / マントル / 放射光蛍光X線 / 流体包有物 / 塩水 / ラマン / 元素分配 / 物質循環 / 流体 / 脱水反応 / 微量成分 / 放射光 / 蛍光X線 |
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| Research Abstract |
Using synchrotron x rays, we determined elemental partition between magmas and aqueous fluids under high-temperature and high-pressure conditions. We investigated effects of pressure and salinity on the partition behaviors. In addition to this experimental study, we analyzed fluid inclusions recorded in mantle peridotite xenoliths collected from subduction zones. We showed that seawater-like saline fluids hydrate fore-arc mantle wedge, and the fluids are mixtures of H2O and CO2, which can be formed through dehydration and decarbonation of subducting slabs.
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Report
(4 results)
Research Products
(45 results)
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[Journal Article] Geochemical and S r-Nd isotopic characteristics and P-T estimates of mantle xenoliths from the French Massif Central : evidence for melting and multiple metasomatism by silicate-rich carbonatite and asthenospheric melts2010
Author(s)
Yoshikawa, M., Kawamoto, T., Shibata, T., Yamamoto, J.
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Journal Title
Coltorti, M., Downes, H., Gregoire, M. and O' Reilly, S.Y.(eds) Petrological Evolution of the European Lithospheric Mantle. Geological Society of London Special Publication
Volume: 337
Pages: 153-175
Related Report
Peer Reviewed
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[Presentation] スラブ流体は塩水か?2010
Author(s)
川本竜彦
Organizer
新学術領域研究「地殻流体」研究会・サマースクール
Place of Presentation
ラフォーレ修善寺
Year and Date
2010-09-11
Related Report
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[Presentation] スラブ流体は塩水か?2010
Author(s)
川本竜彦
Organizer
新学術領域研究「地殻流体」研究会・サマースクール
Place of Presentation
静岡県三島市ラフォーレ修善寺
Year and Date
2010-09-11
Related Report
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