The driving force of the plate motion based on the plate reorganization of plate boundaries surrounding the Cretaceous Pacific Plate and spreading rates

• Project/Area Number: 15K05261
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Solid earth and planetary physics
• Research Institution: Chiba University
• Principal Investigator: Nakanishi Masao 千葉大学, 大学院理学研究院, 教授 (80222165)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
• Keywords: 太平洋プレート / 海底地形 / 磁気異常縞模様 / 白亜紀中期

Outline of Final Research Achievements

The studies of topographic features, magnetic anomaly lineations and seismic reflection profiles around the Hokkaido and Nova-Canton troughs 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 troughs was formed after the formation of the Ontong Java Plateau. These results suggest that the change in the activity of the mantle plume resulted in the reorganization of the plate boundaries.

Research Products

• [Journal Article] Bending-related Topographic Structures of the Incoming Oceanic Plate at the Northwestern Pacific Ocean Trench (2017)
  • Author(s): 中西正男
  • Journal Title: Journal of Geography (Chigaku Zasshi) Volume: 126 Issue: 2 Pages: 125-146
  • DOI: 10.5026/jgeography.126.125
  • NAID: 130005696811
  • ISSN: 0022-135X, 1884-0884
  • Peer Reviewed / Open Access
• [Journal Article] Overview of the Drilling Project on the Bend-fault Hydrology in Old Incoming Plate (2017)
  • Author(s): 森下 知晃、黒田 潤一郎、小野 重明、藤江 剛、山野 誠、中西 正男、尾鼻 浩一郎、中村 恭之、斎藤 実篤、小平 秀一、木村 純一
  • Journal Title: Journal of Geography (Chigaku Zasshi) Volume: 126 Issue: 2 Pages: 247-262
  • DOI: 10.5026/jgeography.126.247
  • NAID: 130005696815
  • ISSN: 0022-135X, 1884-0884
  • Peer Reviewed / Open Access
• [Journal Article] A comparison of two leveling methods for geomagnetic data (2017)
  • Author(s): 野口ゆい, 中西正男, 石原丈実, 玉木賢策, 藤本博巳, P. Huchon, S. Leroy, P. Styles
  • Journal Title: Journal of the Japan Society for Marine Surveys and Technology Volume: 29 Issue: 1 Pages: P3-P18
  • DOI: 10.11306/jsmst.29.1_P3
  • NAID: 130006602204
  • ISSN: 0915-2997, 2185-4920
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Direct ascent to the surface of asthenospheric magma in a region of convex lithospheric flexure (2017)
  • Author(s): Sato Yuki、Hirano Naoto、Machida Shiki、Yamamoto Junji、Nakanishi Masao、Ishii Teruaki、Taki Arashi、Yasukawa Kazutaka、Kato Yasuhiro
  • Journal Title: International Geology Review Volume: - Issue: 10 Pages: 1-13
  • DOI: 10.1080/00206814.2017.1379912
  • Peer Reviewed
• [Journal Article] Making a better magnetic map (2016)
  • Author(s): M. Catalan, J. Dyment, Y. Choi, M. Hamoudi, V. Lesur, E. Thebault, A. Santis, T. Ishihara, J. Korhonen, T. Litvinova, J. Luis, B. Meyer, P. Milligan, M. Nakanishi, S. Okuma, M. Pilkington, M. Purucker, D. Ravat, C. Gaina, S. Maus, Y. Quesnel, R. Saltus, P. Taylor
  • Journal Title: Eos Volume: 97
  • DOI: 10.1029/2016eo054645
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Submarine lava fields in French Polynesia (2016)
  • Author(s): Hirano, N., M. Nakanishi, N. Abe, and S. Machida
  • Journal Title: Geology Volume: 373 Pages: 39-48
  • DOI: 10.1016/j.margeo.2016.01.002
  • Peer Reviewed
• [Journal Article] Reorganization of the Pacific-Izanagi-Farallon triple junction in the Late Jurassic: Tectonic events before the formation of the Shatsky Rise (2015)
  • Author(s): Nakanishi, M., W. W. Sager, and J. Korenaga
  • Journal Title: The Origin, Evolution, and Environmental Evolution of Oceanic Large Igneous Provinces Volume: 511 Pages: 85-101
  • DOI: 10.1130/2015.2511(05)
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Topographic expression of the Danger Islands Troughs and implications for the tectonic evolution of the Manihiki Plateau, western equatorial Pacific Ocean, (2015)
  • Author(s): Nakanishi, M.,Y. Nakamura, M. F. Coffin, K. Hoernle, and R. Werner
  • Journal Title: The Origin, Evolution, and Environmental Evolution of Oceanic Large Igneous Provinces Volume: 511 Pages: 195-220
  • DOI: 10.1130/2015.2511(11)
  • Peer Reviewed / Int'l Joint Research
• [Presentation] オントンジャワ海台の東方に位置する Stewart海盆およびElice海盆の地殻構造 (2017)
  • Author(s): 清水祥伽、中西正男、 三浦誠一、末次大輔
  • Organizer: 海洋研究開発機構ブルーアース2017
  • Place of Presentation: 日本大学理工学部 駿河台キャンパス（東京都、千代田区）
  • Year and Date: 2017-03-02
• [Presentation] Plate Boundary Reorganization of the Pacific Plate during Cretaceous, JpGU-AGU Joint Meeting (2017)
  • Author(s): Masao Nakanishi
  • Organizer: JpGU-AGU Joint Meeting
  • Int'l Joint Research
• [Presentation] オントンジャワ海台 周囲の海盆 形成過程の解明 (2016)
  • Author(s): 中西正男他
  • Organizer: 海洋研究開発機構ブルーアース2016
  • Place of Presentation: 東京海洋大学（東京都・品川区）
  • Year and Date: 2016-03-08
• [Book] 海洋底地球科学 (2016)
  • Author(s): 中西正男、沖野郷子
  • Total Pages: 320
  • Publisher: 東京大学出版会