| Project/Area Number |
26610161
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geology
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| Research Institution | Kyoto University |
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Principal Investigator |
Naruse Hajime 京都大学, 理学(系)研究科(研究院), 准教授 (40362438)
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| Co-Investigator(Kenkyū-buntansha) |
Park Jin-Oh 東京大学, 大気海洋研究所, 准教授 (70359199)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 地質学 / 地震波探査 / 海底扇状地 / 南海トラフ / 中新世 / 西南日本 / 四国海盆 / タービダイト / 混濁流 / 砕屑物供給 / 日本海拡大 / フィリピン海プレート |
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| Outline of Final Research Achievements |
This study revealed dimensions of the Miocene Large-scale Submarine fans in Shikoku Basin, which develops from 15 to 11 Ma and extend 800 km offshore, and are more than 300 m in thickness. This is one of the largest dimensions of submarine fans in active margins. In addition, this study produced a theoretical model of submarine fans, and estimated that the submarine fans in the Miocene Shikoku Basin were formed by turbidity currents that is composed mainly of muddy sediments (>90 %). This implies that the chemical weathering and denudation are remarkably active in the provenance of the submarine fans.
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