Assessing bulk assimilation in granitic xenoliths
| Project/Area Number |
26400517
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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/Economic geology
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| Research Institution | Kochi University |
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Principal Investigator |
Kawabata Hiroshi 高知大学, 教育研究部総合科学系複合領域科学部門, 准教授 (90392943)
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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 |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Keywords | 同化作用 / ゼノリス / 花崗岩類 / 非平衡溶融 / マグマ混合 / 瀬戸内火山岩 / ゼノクリスト / 花崗岩 / 安山岩 / 非平衡部分溶融 / パイロ変成作用 / 部分溶融 |
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| Outline of Final Research Achievements |
Crustal assimilation is one of the important magmatic processes especially for arc magmas. This study examined the petrological and geochemical evolution during xenolith assimilation on sub-meter scale, using the xenolith-bearing Miocene Setouchi volcanic rocks. A suite of rock samples indicates that xenolith assimilation proceeds through disequilibrium melting of granitic xenoliths and subsequent mixing of xenolith-derived porphyritic magmas with host andesitic magmas. Combined use of phase relations and thermal conductivity of xenoliths allows us to comprehensively understand the thermochemical and petrological change during assimilation.
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Report
(4 results)
Research Products
(7 results)
