The 133rd Annual Meeting of the Geological Society of Japan
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Session Details

Session OralT1[Topic] Tectonics

T1[Topic] Tectonics

Sun. Sep 13, 2026 9:15 AM - 12:00 PM JST
Sun. Sep 13, 2026 12:15 AM - 3:00 AM UTC
oral room 4(Lecture room B)
Chiar:Hiroaki KOGE
9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)

[T1-O-1]A Paradigm Shift in “Fault Models” for Active Faults: Insights from the Reiwa 6 Noto Peninsula Earthquake

*Tatsuro Yoshimura1 (1. Daiichi Fukken Co.)
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9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)

[T1-O-2]Revisiting Plio–Holocene Tectonics of Southwest Japan: Implications for the Spatiotemporal Scale of Uniformitarianism

*Gaku KIMURA1 (1. Japan Agency for Marine-Earth Science and Technology)
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9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[T1-O-3]“ Underground Spreading Ridge Hypothesis” for “Ise Bay-Biwa Lake-Tsuruga Bay Low Land Area”

*Nobuaki Niitsuma1 (1. Institute GeoSci. Shizuoka Univ, Sendai)
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10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[T1-O-4]Kinematics and deformation environment of the Iidesan mylonite zone

*Kenta KOBAYASHI1, Reina ONOZAWA2, Naohiro OKADA3 (1. Niigata University, 2. University of Tsukuba, 3. Nittetsu Mining Consultants Co., Ltd.)
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10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

Break

10:30 AM - 11:00 AM JST(1:30 AM - 2:00 AM UTC)Highlight

[T1-O-5](Invited) Mountain-building tectonics of volcanic arcs in subduction zones revealed by low-temperature thermochronology

*Shigeru SUEOKA1 (1. Tono Geoscience Center, Japan Atomic Energy Agency)
【ハイライト講演】  本講演は，低温熱年代学を用いた日本列島の山地形成過程に関する最新研究である．熱年代学的データから，火山弧地域の一部では活断層による地塊運動だけでは説明できないドーム状隆起が進行している可能性が示されている．本講演では，沈み込み帯火山弧における山地形成テクトニクスの実態と，その力学的背景について議論する． ※ハイライト講演とは．．．
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11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)HighlightECS: Early Career Scientist

[T1-O-6]Feasibility study for zircon and apatite thermochronology on the uplifting Noto Peninsula

*Ruby Connemara MARSDEN1, Noriko HASEBE1 (1. Kanazawa University)
【ハイライト講演】 本講演は,低温熱年代学を用いて能登半島の新生代テクトニクスを議論する．2024年能登半島沖地震とそれに伴う離水イベントにより，能登半島の隆起を伴うテクトニクスに注目が集まっている．しかし，日本海拡大を含む新生代に渡る能登半島のテクトニクスの理解は十分に進んでいない．本講演は熱年代学的手法を用いて，基盤岩の隆起・沈降に伴う複雑な熱履歴を復元し，能登半島の新生代テクトニクスの議論を行う意欲的な発表である． ※ハイライト講演とは．．．


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11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[T1-O-7]The order and evidence of the rise of Jobu Mountains, Chichibu Mountains, and Oku-Musashi Mountains, which were pushed up by the Chichibu Flexure-Basin

*Sadayoshi NAITO1 (1. Chichibe-Belt OHCHIGAWA VISITOR CENTER)
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11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)

[T1-O-8]Amphibole K-Ar ages of the Kurouchi ultramafic body in Shimonita Geopark, Gunma Prefecture - Possibility of a klippe thrust over the Mikabu Greenstones.

*Atsushi MIYASHITA1, Hiroyoshi ARAI2, Masakazu RIKITA3, Hiroshi HOSHINA3, Hideo TAKAGI4 (1. The Open University of Japan, 2. Waseda University Honjo Senior High School, 3. Shimonita Nature School, 4. Waseda University)
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11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)entry

[T1-O-9]Changes in deformation patterns and load response during prolonged wedge growth in dry sand analogue experiments

*Nodoka Oda1, Satoshi Tonai1, Hiroaki Koge2, Takami Tachibana1 (1. Kochi Univ., 2. National Institute of Advanced Industrial Science and Technology)
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