| Budget Amount *help |
¥28,210,000 (Direct Cost: ¥21,700,000、Indirect Cost: ¥6,510,000)
Fiscal Year 2018: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥13,390,000 (Direct Cost: ¥10,300,000、Indirect Cost: ¥3,090,000)
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| Outline of Final Research Achievements |
The author has thrown freeware for the stress inversion of orientation data from dilational fractures open to the public through a webpage of Kyoto University. The author developed the theoretical basis for the stress inversion of calcite twin data, which enabled separation of stresses from polyphased calcite twin data.
The new methods were applied to natural data. Hishikari gold veins showed ore mineralization accompanied by the waning of extensional stress on the franks of a Quaternary rift. It was shown that the ore mineralization was accompanied by the repeated formation and break of pressure seals. Igneous dikes in Akita and Hyogo Prefectures indicated weak extensional stress just after the end of the Japan Sea opening. Normal faulting stress regime was determined from quartz veins, indicating extensional stress condition in the forearc region at the time of Japan Sea opening and of the juxtaposition of Southwest Japan with the Philippine Sea Plate.
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