The 131st Annual Meeting of the Geological Society of Japan
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Session OralT7 ［Topic Session］Tectonics

[2oral312-19]T7 ［Topic Session］Tectonics

Mon. Sep 9, 2024 3:00 PM - 5:30 PM JST
Mon. Sep 9, 2024 6:00 AM - 8:30 AM UTC
oral room 3(General Education_Section1-122)
Chiar:Hiroaki KOGE(GSJ, AIST), Satoshi TONAI(Kochi University)
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3:00 PM - 3:30 PM JST(6:00 AM - 6:30 AM UTC)Highlight

[T7-O-1][Invited] Eocene to Miocene tectonics in northwestern Kyushu at the jucntion of the SW Japan and Ryukyu arcs

*Kentaro USHIMARU1,2 (1. Division of Earth and Planetary Sciences, Graduate School of Science, Kyoto University, 2. Geological Survey of Japan, AIST)
【ハイライト講演】始新世〜中新世は，日本列島にとって日本海拡大を含む重大な時期である．この発表では，地質図作成・古応力解析・古地磁気分析を行ない，九州北西部天草地域のこの時期の構造発達史をまとめる．特に，九州北西部は日本海拡大後の中期中新世に様々な伸長・短縮テクトニクスを経験したこと，天草の始新世堆積盆はグラーベンであることを指摘している．日本列島新生代テクトニクスの研究を新展開させる成果である．（ハイライト講演とは．．．）
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3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)

[T7-O-2]The whole-rock chemical composition of Miocene dikes in the Koshikijima Islands, Kagoshima prefecture and its implication for the tectonic environments of magmatic activity

*Hironao SHINJOE1, Satoshi TONAI2, Yuji ORIHASHI3, Yui KANAZASHI3, Minoru SASAKI3, Yoshihiro ASAHARA4 (1. Tokyo Keizai University, 2. Kochi University, 3. Hirosaki University, 4. Nagoya University)
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3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)

[T7-O-3]Revision of tectonics of the Murotohanto Group in the Shimanto Belt, Muroto Peninsula, Southwest Japan

*Hidetoshi HARA1, Hinako MATSUMOTO2, Satoshi TONAI3 (1. Institute of Geology and Geoinformation, GSJ, AIST, 2. Dia Nippon Engineering Consultants Co., Ltd., 3. Kochi Univ.)
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4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)entry

[T7-O-4]Paleomagnetic direction of late Cretaceous basalts intruding into the Inuyama Section of the Mino Belt in central Japan

*Taizo UCHIDA1, Hiroyuki HOSHI2 (1. Kochi University, 2. Aichi University of Education)
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4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)

[2oral312-19-5add]Break

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4:30 PM - 4:45 PM JST(7:30 AM - 7:45 AM UTC)

[T7-O-5]Southern facies of the Upper Cretaceous Izumi Group distributed in proximity to the Median Tectonic Line, western Shikoku, southwest Japan: Tectonic implications

*Toru TAKESHITA1, Yasu'uchi KUBOTA2 (1. Pacific Consultants Co., Ltd., 2. OYO Corporation)
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4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)entry

[T7-O-6]Strain distribution with depth along the MTL, northwestern Shikoku.

*Rio TAKASAKI1, Kanna YOSHIMATSU2, Arito SAKAGUCHI1 (1. Yamaguchi University, 2. NEC Aerospace Systems)
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5:00 PM - 5:15 PM JST(8:00 AM - 8:15 AM UTC)

[T7-O-7]Kinematic and stress history of the Yunodake Fault, southeastern Fukushima Prefecture

*Toru SAKAI1,2, Hideo TAKAGI1 (1. Waseda University, 2. Electric Power Development Co., Ltd.)
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5:15 PM - 5:30 PM JST(8:15 AM - 8:30 AM UTC)

[T7-O-8]2011March11 Off North East Arc Heisei MegaQuake M9.0 and Pacific Slab on upper surface of Lower Mantle, and SuperQuake along Chishima Trench.

*Nobuaki Niitsuma1 (1. Inst. GeoSci.Shizuoka Univ.,Sendai)
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