| Project/Area Number |
23654186
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Niigata University (2012)
Shizuoka University (2011) |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YOSHINO Takashi 岡山大学, 地球物質科学研究センター, 准教授 (30423338)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 岩石 / 鉱物 / 鉱床学 / 炭素同位体 / Fe-C系 / 高温高圧実験 / 同位体分別 / 岩石・鉱物・鉱床学 / Fe－C系 |
|---|
| Research Abstract |
Equilibrium carbon isotope fractionation between graphite/diamond and iron carbide melt at 5 and 10 GPa and in the temperature range between 1200 and 2000 oC was determined. The results suggest that iron carbide melt will preferentially accumulate12^C rather than 13^C. We proposed that the temperature-dependent fractionation of carbon isotopes between iron carbide melt and graphite/diamond might have created a “12^C-enriched core” with a significant difference in the distribution of carbon isotopes between the carbon in the metallic core and bulk silicate Earth during the accretion and differentiation of early Earth.
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