| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2009: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
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| Research Abstract |
Chemical speciation analysis of trace elements was carried out for sediment core samples collected from Taiwan Chelungpu Fault using synchrotron X-ray radiation. Almost all Sr was present in the phase of albite, which is observed as a newly crystallized phase during the fluid-rock interaction at high temperatures of above 250 degrees Celsius in laboratory experiments. This host phase of Sr demonstrates the presence of water in the fault, and its high temperature can be interpreted as the result of co-seismic frictional heating of the fault. This result will support the hypothesis of thermal pressurization in fault weakening mechanism from mineral phase as well as transect chemical composition pattern.
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