Plate driving force of the Cretaceous Pacific Plate
Project/Area Number |
18K03772
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 17040:Solid earth sciences-related
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Research Institution | Chiba University |
Principal Investigator |
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Project Period (FY) |
2018-04-01 – 2022-03-31
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Project Status |
Completed (Fiscal Year 2021)
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Budget Amount *help |
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
|
Keywords | 太平洋プレート / 海底地形 / 中央海嶺の痕跡 / 磁気異常縞模様 / マントルプルーム / 伝播性拡大軸 / 白亜紀中期 / 北海道トラフ / ノバ・カントントラフ / 伝播性中央海嶺 / プレート運動駆動力 / 太平洋 |
Outline of Final Research Achievements |
The origins of the Hokkaido trough and Nova-Canton rifting system, western Pacific Ocean, were examined based on topographic features, magnetic anomaly lineations and seismic reflection profiles. The results revealed that the Hokkaido trough is the trace of the break-up of the Cretaceous Pacific Plate after the formation of the Shatsky Rise was finished and that the Nova-Canton rifting system was formed after the formation of the Ontong Java Plateau. They suggest that the change in activity of the mantle plume resulted in the reorganization of the plate boundaries.
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Academic Significance and Societal Importance of the Research Achievements |
本研究課題の研究成果は、地球科学の基本的な考えであるプレートテクトニクスにおける重要な課題の一つである「プレート運動の支配的な駆動力が何か」に答えるために必要な新たな知見を与える。
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Report
(5 results)
Research Products
(18 results)
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[Presentation] Sampling source heterogeneities that bind the Ontong Java Nui puzzle together2021
Author(s)
Maria Luisa Garcia Tejada, Takashi Sano Takashi, Takeshi Hanyu, Anthony Koppers, Maso Nakanishi, Akira Ishikawa, Takashi. Miyazaki, Kenichiro Tani, Shoka Shimizu, Qing Changm, and Bogdan Vaglarov
Organizer
Goldschmidt2021
Related Report
Int'l Joint Research
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[Presentation] Exploring the World’s Largest LIP: Testing the Ontong Java Nui hypothesis2020
Author(s)
Sano, T., M. L. G., Tejada C. R. Neal, M. Coffin, M. Nakanishi, P. J. Michael, J. Geldmacher, T. Hanyu, S. Miura, C. Timm A. A. P. Koppers, D. Suetsugu, T. Tonegawa, A. Ishikawa, K. Shimizu, and P. Castillo
Organizer
Japan Geoscience Union-American Geophysical Union Joint Meeting 2020
Related Report
Int'l Joint Research
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