Magma generation processes by crustal melting at subduction zone with continental crust
| Project/Area Number |
23540555
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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 |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Kyoto University |
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Principal Investigator |
KANEKO Katsuya 京都大学, 人間・環境学研究科(研究院), 助教 (40335229)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 大陸地殻 / 地殻溶融 / 大規模珪長質マグマ活動 / カルデラ火山 / 島弧火山 / 地殻溶融過程 / 物理モデル / マグマ生成 / マグマ含水量 / 火山 / 地殻内マグマ過程 / 数値実験 / 島弧安山岩火山 |
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| Research Abstract |
We carried out numerical experiments of magma genesis by crustal melting on the basis of physical model where hot magmas injecting into crust repeatedly melt the crust and produce magmas, in order to clarify amount, composition, and generation timescale of magma produced by crustal melting and understand variety of igneous activities in continental margin. The results of the numerical experiments indicate that (1) the initial crustal temperature and injection rate of the hot magmas govern total amount of crustal melt, (2) composition of crustal melt is dominantly affected by the initial crustal temperature and injection thickness of the hot magma, and (3) generation timescale for magmas with more than 1 km3 volume is several ten thousands years. These results are consistent with features of natural igneous activity.
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Report
(4 results)
Research Products
(19 results)
