Sr-Nd-Pb isotope ratios of hemipelragic sediments as the tracer of plate motion
| Project/Area Number |
26870418
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Stratigraphy/Paleontology
Geology
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| Research Institution | Research Institute for Humanity and Nature (2015-2017)
Kochi University (2014) |
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Principal Investigator |
Saitoh Yu 総合地球環境学研究所, 研究基盤国際センター, 研究員 (60469616)
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | Sr-Nd-Pb同位体比 / 泥質堆積物 / 供給源 / フィリピン海プレート / 西南日本 / 河川堆積物 / 掛川層群 / 前弧海盆 / 流域地質 / 泥岩 / 海水準変動 / 四国海盆 / 黄砂 / 半遠洋性堆積物 / プレート運動 / 南海トラフ / 放射壊変源安定同位体比 |
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| Outline of Final Research Achievements |
Surface of solid earth is covered by several plates, of which relative motion causes crustal movement such as earthquakes and volcanic eruptions. Precise identification of the source of sediments on the plates will help to decipher the history of the plate motion. Although it has been well known that treating isotope ratios of heavy elements such as lead as the fingerprints is effective in identification of sediment sources, the reference data has been unfulfilled. In this study I consolidated the basic isotopic data to infer the history of the Philippine sea plate motion, which causes large earthquakes called "To-nankai earthquakes" by revealing spatiotemporal variations of isotope ratio of heavy elements in fine sediments discharged from Japan islands and their causal factors
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Report
(5 results)
Research Products
(8 results)
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[Journal Article] Sr, Nd, and Pb isotope compositions of hemipelagic sediment in the Shikoku Basin: Implications for sediment transport by the Kuroshio and Philippine Sea plate motion in the late Cenozoic2015
Author(s)
Saitoh, Y., Ishikawa, T., Tanimizu, M., Murayama, M., Ujiie, Y., Yamamoto, Y., Ujiie, K., and Kanamatsu, T.
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Journal Title
Earth and Planetary Science Letters
Volume: 421
Pages: 47-57
DOI
Related Report
Peer Reviewed / Open Access
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