| Budget Amount *help |
¥18,460,000 (Direct Cost: ¥14,200,000、Indirect Cost: ¥4,260,000)
Fiscal Year 2011: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2010: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Fiscal Year 2009: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
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| Research Abstract |
In order to understand the chemical evolution of the upper mantle, we have examined ascent history of orogenic mantle bodies occurring in Europe : peridotite masses in Pyrenees, Ronda ultramafic complex, and Lanzo ultramafic complex. We conducted field survey in the three ultramafic bodies and collected many samples, on which thin section observation, EPMA analysis, and SEM/EBSD analysis were made. We estimated decompressional histories of these ultramafic bodies including the initial condition. The results were compared with our data on the Horoman ultramafic complex, Hokkaido. There is a wide variation in ascent history of lithospheric mantle, each of which corresponds to dynamics of thermal and mechanical interaction of lithospheric and asthenospheric mantle.
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