| Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2010: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Research Abstract |
Chemical state of trace elements such as rare earth elements (REE) and their chemical behavior during sedimentation and diagenesis were studied, in order to examine trace elements in sediments on the geochemical tracer reflecting their sedimentation environments. It is shown on marine sediments that REE incorporated into Mn oxides during sedimentation were released from Mn oxide dissolution during diagenesis, but the released REE were absorbed to phosphate phase such as apatite during the diagenesis. REE patterns in sedimentary rocks are confirmed to inherit their features as a whole through sedimentation and diagenesis and to be an useful geochemical tool reflecting the depositional environment.
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