[S-GL23] Geologic structure and tectonic history of East Asia and Japanese Islands

Sat. Jun 5, 2021 9:00 AM - 10:30 AM Ch.24 (Zoom Room 24)

convener:Makoto Otsubo(Geological Survey of Japan, Research Institute of Earthquake and Volcano Geology), Jun Hosoi(Geological Survey of Japan, Institute of Geology and Geoinformation, AIST), Chairperson:Makoto Otsubo(Geological Survey of Japan, Research Institute of Earthquake and Volcano Geology)

The main aim of this session is to discuss geologic structure and tectonic history of East Asia, especially of Japanese Islands, on the basis of the recent results of geology and other earth sciences.

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9:00 AM - 9:15 AM

[SGL23-01] Age spectra of detrital zircons of Paleogene fore-arc sandstones in Japan and the irreversible major change in mid-Eocene relevant to the initiation of Median Tectonic Line.

*Yukio Isozaki¹, Yukiyasu Tsutsumi², Tomohito Nakano¹ (1.Department of Earth Science and Astronomy, Graduate School of Arts and Sciences, The University of Tokyo, 2.Deprtment of Geology and Paleontology, National Musem of Nature and Science)

9:15 AM - 9:30 AM

[SGL23-02] Zircon U-Pb ages of Momonoki Subgroup in the Koma Mountains

*Takashi Hakomori¹, Kenichiro Tani², Junichiro Kuroda¹, Asuka Yamaguchi¹ (1.Atmosphere and Ocean Research Institute, The University of Tokyo, 2.National Museum of Nature and Science)

9:30 AM - 9:45 AM

[SGL23-03] Tectonostratigraphic characterization of Maizuru back-arc basin during its closure: geochemical and U-Pb detrital geochronological approaches.

*Larissa NGOMBI MAVOUNGOU¹, Kaushik Das^1,2, Yasutaka Hayasaka^1,2, Haruna Kuriu¹, Kenta Kawaguchi³ (1.Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University, 2.HiPeR, Hiroshima, 3.Chonbuk National University, Korea)

9:45 AM - 10:00 AM

[SGL23-04] Southwest Japan rotated clockwise during opening of the Japan Sea: Evidence from Miocene sediments in the Outer Zone

*Hiroyuki Hoshi¹, Hideki Iwano², Tohru Danhara² (1.Department of Earth Sciences, Aichi University of Education, 2.Kyoto Fission-Track Co., Ltd.)

10:00 AM - 10:15 AM

[SGL23-05] Provenance of sandstones from the Eocene Urahoro Group, Hokkaido, Northern Japan: Tectonic Implications

*Toru Takeshita¹, Hiromi Kaji^1,2 (1.Department of Natural History Sciences, Graduate School of Science, Hokkaido University, 2.Oyo Co. Ltd.)

10:15 AM - 10:30 AM

[SGL23-06] Shallow structure and late Quaternary slip rate on the Osaka Bay Fault: Aspects of climate-tectonic interaction

*Mari Hamahashi¹, Hironori Otsuka¹, Yoshiaki Suzuki², Jun Arimoto², Tetsuo Matsuno^1,3, Nobukazu Seama^1,3, Satoshi Shimizu^1,4, Hikaru Iwamaru^1,4, Mamoru Sano^1,4, Keita Suzuki^1,4, Katsuya Kaneko^1,3, Kazuo Nakahigashi⁵, Itsuko Hidaka¹, Yuzuru Yamamoto^1,3, Yoshiyuki Tatsumi¹ (1.Kobe University, Ocean-Bottom Exploration Center, 2.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 3.Department of Planetology, Graduate School of Science, Kobe University, 4.Nippon Marine Enterprises, Ltd. , 5.School of Marine Resources and Environment, Tokyo University of Marine Science and Technology)

Session information