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

Thu. May 29, 2025 1:45 PM - 3:15 PM 106 (International Conference Hall, Makuhari Messe)

convener:Makoto Otsubo(Geological Survey of Japan, Research Institute of Earthquake and Volcano Geology), Toshiki Haji(Geological Survey of Japan, AIST), Chairperson:Toshiki Haji(Geological Survey of Japan, AIST), 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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1:45 PM - 2:00 PM

[SGL23-01] Factors controlling tectonics in the East Asia since the Cretaceous: Collision of the Indian subcontinent and subduction of Izanagi-Pacific plate

*Toru Takeshita¹ (1.Adviser, Land Infrastructure Division, Pacific Consultants Co., Ltd.)

2:00 PM - 2:15 PM

[SGL23-02] Reanalyses of samples of Abukuma granitoids stored at the Geological Survey of Japan, and reexamination of their geochemical characteristics

*Satoru Haraguchi¹, Akiko Tanaka², Tsuyoshi Iizuka³, Kenta Ueki⁴ (1.Earthquake Research Institute, The University of Tokyo, 2.Geological survey of Japan, AIST, 3.Faculty of Science, University of Tokyo, 4.JAMSTEC)

2:15 PM - 2:30 PM

[SGL23-03] New insights from unique clasts in the Misaki Formation, Jogashima, Kanagawa Prefecture

*Mitsuhiro Nagata¹, Ouhiko Miyawaki¹, Tatsuo Kanamaru¹, Sota Niki², Takafumi Hirata³, Shinji Takeuchi¹ (1.Department of Earth and Environmental Sciences, College of Humanities and Sciences, Nihon University, 2.Division for Chronological Research, Institute for Space-Earth Environmental Research, Nagoya University, 3.Geochemical Research Center, The University of Tokyo)

2:30 PM - 2:45 PM

[SGL23-04] Paleo-stress indicated by sandstone dikes intruding into the Miocene Hokusetsu Subgroup in eastern Aichi Prefecture

*Sakurako Yabuta¹, Hiroyuki Hoshi², Makoto Takeuchi^1,3 (1.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 2.Department of Earth Sciences, Aichi University of Education, 3. Graduate School of Environmental Studies, Nagoya University)

2:45 PM - 3:00 PM

[SGL23-05] Reconstruction of Stratigraphy and Tectonic History of the Goto Islands, Nagasaki Prefecture, Southwest Japan

*Shoichi Kiyokawa¹, Hiroaki Takahashi^2,1, Masaru Yasunaga^3,1 (1.Department of Earth and Planetary Sciences Faculty of sciences, Kyuushu University, 2.West Japan Engineering Consultants, Inc., 3.Goto Geopark (Shimo Goto))

3:00 PM - 3:15 PM

[SGL23-06] The Tokunioshima belt: a new geotectonic unit in northern Ryukyus

*Yukio Isozaki¹, Hiroshi Yamamoto², Yukiyasu Tsutsumi³, Kenichiro Tani³ (1.Department of Earth Science and Astronomy, Multi-disciplinary Sciences - General Systems Studies, Graduate School of Arts and Sciences, The University of Tokyo, 2.Faculty od Science, Kagoshima University, 3.Deprtment of Geosciences, National Museum of Nature and Science)

Session information