| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Outline of Final Research Achievements |
Displacement and alteration are highly concentrated within fault core. Nano-particles in the fault core play important roles in fault activity. This study aims at characterization of the nano-particles in the fault core both from analysis of natural fault materials and pulverization experiments. Analysis on grain size distributions revealed that the fractal dimension is potentially a good indicator of degree of pulverization. Mineral analysis through the MTL fault zone revealed that the hydrothermally altered zone along MTL becomes narrower with decreasing temperature probably resulting from cooling of the granitic body and regional uplift. As for the pulverization experiments using planetary ball mill, water inhibits both pulverization and amorphization. In particular, montmorillonite, which has interlayer water, are not pulverized effectively in wet conditions. The shape and size of the grains are similar between field samples and run products.
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