2013 Fiscal Year Final Research Report
Role of magma in chemical evolution of the Earth
| Project/Area Number |
21244082
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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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 | Tokyo Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
HAMADA Morihisa 独立行政法人海洋研究開発機構, 地球内部・ダイナミクス領域, 研究員 (60456853)
SUZUKI Toshihiro 東京工業大学, 大学院理工学研究科, 研究員 (40235974)
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| Project Period (FY) |
2009-04-01 – 2013-03-31
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| Keywords | 地球 / マントル / マグマオーシャン / 元素分配 / 圧力依存性 |
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| Research Abstract |
The Earth consists of 70% of MgO-rich peridotite (mantle) and 30% of Fe-Ni-rich metallic core. Basalt which is the main component of the Earth's crust is formed by partial melting of the mantle peridotite. Role of magma (melting phenomenon) has played very large role in the Earth's interior evolution (chemical differentiation). We have carried out high-pressure experiments and succeeded for the first time to reproduce experimentally the pressure dependence of the partition coefficient of trace elements between crystals and magma (PC-IR diagram).We proposed a theory that explains the pressure dependence.
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