[S-CG61] Ocean Floor Geoscience

Wed. May 23, 2018 1:45 PM - 3:15 PM 302 (3F International Conference Hall, Makuhari Messe)

convener:Kyoko Okino(Atmosphere and Ocean Research Institute, The University of Tokyo), Chairperson:Sato Yuki, Fujinaga Koichiro

Most of Earth's volcanism and much of its tectonic activity occur on and beneath the seafloor. Various phenomena on the seafloor are closely linked to plate tectonics, Earth structure and dynamics, and also related to Earth's environments through the hydrosphere and atmosphere. Seafloor rocks and sediments record Earth's evolution and heat and material fluxes on the Earth. Ocean Floor Geoscience session covers a broad range of research on seafloor such as mid-ocean ridge process, subduction dynamics, arc magmatism, hot spot and LIPs, crustal movement and structure etc. Every field of researches and every approaches are welcomed. The session aims to encourage discussion among scientists from different study fields and to integrate our understanding of ocean floor. The session is co-dhaired by K. Tadokoro (Nagoya Univ.), O. Ishizuka (AIST), T. Toki (Univ. Ryukyu), and N. Takahashi (JAMSTEC).

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1:45 PM - 2:00 PM

[SCG61-01] The enigmatic tectonics of the Jurassic Pacific plate

*Masao Nakanishi¹, Reiko Kakurai², Takemi Ishihara³ (1.Department of Earth Sciences, Graduate School of Science, Chiba University, 2.Department of Earth Sciences, Chiba University, 3.Institute of Geology and Geoinformation, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology)

2:00 PM - 2:15 PM

[SCG61-02] Missing carbonate and petit-spot silicate liquid immiscibility

*Yuki Sato¹, Naoto Hirano¹ (1.Center for Northeast Asian Studies, Tohoku University)

2:15 PM - 2:30 PM

[SCG61-03] The progress of researches on REY-rich mud — A general overview —

*Yasuhiro Kato^1,2,3,5, Kentaro Nakamura², Koichiro Fujinaga^3,1, Kazutaka Yasukawa^2,3, Yutaro Takaya^4,3, Junichiro Ohta^3,1, Erika Tanaka², Kazuhide Mimura², Koichi Iijima^5,2, Shiki Machida^3,1, Tatsuo Nozaki^5,3,1,6, Jun-Ichi Kimura⁷, Hikaru Iwamori^7,8 (1.Frontier Research Center for Energy and Resources, Graduate School of Engineering, University of Tokyo, 2.Department of Systems Innovation, School of Engineering, University of Tokyo, 3.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 4.Department of Resources and Environmental Engineering School of Creative Science and Enginerring, Waseda University, 5.Research and Development Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology, 6.Department of Planetology, Graduate School of Science, Kobe University, 7.Geochemical Evolution Research Program, Japan Agency for Marine-Earth Science and Technology, 8.Department of Earth and Planetary Sciences, School of Science, Tokyo Institute of Technology)

2:30 PM - 2:45 PM

[SCG61-04] Geochemistry of REY-rich mud in the basins southeastern off Minamitorishima Island

*Koichiro Fujinaga^1,2, Kazutaka Yasukawa^3,1, Shiki Machida^1,2, Honami Sato¹, Ryo Shimomura³, Erika Tanaka³, Kazuhide Mimura³, Yoichi Usui⁴, Koichi Iijima⁴, Ayu Takahashi⁴, Hirofumi Yamamoto⁴, Katsuhiko Suzuki⁴, Kentaro Nakamura³, Yasuhiro Kato^2,3,1,4, MR16-07 cruise members (1.Ocean Resources Research Center for Next Generation, Chiba Institute of Technology, 2.Frontier Research Center for Energy and Resources, School of Engineering, University of Tokyo, 3.Department of Systems Innovation, School of Engineering, the University of Tokyo, 4.Research and Development Center for Submarine Resources, Japan Agency for Marine-Earth Science and Technology)

2:45 PM - 3:00 PM

[SCG61-05] Origin of deep-sea sediments within the Minamitorishima EEZ based on downhole variation of bulk chemical composition and isotopic ratios

*Erika Tanaka¹, Kazutaka Yasukawa^1,2, Kentaro Nakamura¹, Takashi Miyazaki³, Bogdan Vaglarov³, Koichiro Fujinaga^2,1, Hikaru Iwamori^3,4, Yasuhiro Kato^1,2,3 (1.School of Engineering, The University of Tokyo, 2.Chiba Institute of Technology, 3.JAMSTEC, 4.Tokyo Institute of Technology)

3:00 PM - 3:15 PM

[SCG61-06] Origin of common chemostratigraphy of pelagic clay in the North Pacific Ocean: age constraints from ichthyolith stratigraphy

*Kazuhide Mimura¹, Katsushi Yamamoto¹, Kentaro Nakamura¹, Kazutaka Yasukawa^1,2, Junichiro Ohta², Koichiro Fujinaga^2,1, Shiki Machida^2,3, Yasuhiro Kato^1,2,3 (1.School of Engineering, the University of Tokyo, 2.ORCeNG, Chiba Institute of Technology, 3.JAMSTEC)

Session information