| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2013: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Research Abstract |
High pressure melting experiments on rocks doped with 26 trace elements (rare earth elements, Sc, Y, Ga, In, Sr, Li, Rb, Cs, Ce, Zr, Hf) were performed from 3 to 25 GPa, and the partitioning of elements between silicate melt and coexisting minerals (Garnet, CPx, Merwinite, K-hollandite, Ca-perovskite, Mg-perovskite) were investigated. Among ions which have the same valence, it has believed that the ion which has the maximum partition coefficient will not change under any pressure conditions. The present experimental results, however, are clearly showing that they can change under very high pressure conditions. This effect is larger in the ions which have smaller valence. For example, among monovalent ions, K and Rb are representative incompatible elements at normal pressure conditions, but their partition coefficients can be larger than other monovalent ions under ultra-high pressure conditions.
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