The 132nd Annual Meeting of the Geological Society of Japan
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Session OralT4 ［Topic Session］Deformation and reaction of rocks and minerals activities

[2oral311-18]T4. Deformation and reaction of rocks and minerals activities

Mon. Sep 15, 2025 3:00 PM - 5:30 PM JST
Mon. Sep 15, 2025 6:00 AM - 8:30 AM UTC
oral room 3(E201)
Chiar:Masaoki UNO(Dept. Earth, Planet. Sci., Univ. Tokyo), Hanaya OKUDA(Japan Agency for Marine-Earth Science and Technology), Kazuki YOSHIDA(High Energy Accelerator Research Organization)
3:00 PM - 3:15 PM JST(6:00 AM - 6:15 AM UTC)

[T4-O-1]Variation of the physical property in a serpentinised peridotite at the Atlantic Atlantis Massif- IODP Exp 399 Hole U1601C

*Natsue Abe Abe1,2 (1. Japan Agency for Marine-Earth Science and Technology, 2. Graduate School of Natural Science& Technology, Kanazawa University)
3:15 PM - 3:30 PM JST(6:15 AM - 6:30 AM UTC)entry

[T4-O-2]Feedback between Reaction, Deformation, and Fluid Flow in MgO hydration expansion: The effect of confining conditions

*Fukuma Sakashita1, Atsushi Okamoto1, OTGONBAYAR DANDAR1, Kazuki Yoshida2, Hanaya Okuda3, Masaoki Uno4 (1. Graduate School of Environmental Studies, Tohoku University, 2. High Energy Accelerator Research Organization, 3. Japan Agency for Marine-Earth Science and Technology, 4. Department of Earth and Planetary Science, The University of Tokyo)
3:30 PM - 3:45 PM JST(6:30 AM - 6:45 AM UTC)ECS

[T4-O-3]Experimental investigation on the reproduction of diagenesis and its effects on frictional properties of incoming sediments from Tohoku subduction zone

*Hayato Ito1, Keishi OKAZAKI1,2, Mizuki UEDA3, Yohei HAMADA2, Asuka YAMAGUCHI4 (1. Hiroshima univ., 2. JAMSTEC, 3. University of Tsukuba, 4. Atmosphere and Ocean Research Institute, The University of Tokyo)
3:45 PM - 4:00 PM JST(6:45 AM - 7:00 AM UTC)entryECS

[T4-O-4]Frictional properties of limestone from seamounts : Relationship with seismic activity in subduction zones

*Mayuko SEKIKAWA1, Hanaya OKUDA2, Manami KITAMURA3, Miki TAKAHASHI3, Asuka YAMAGUCHI4, Michiyo SAWAI1 (1. Chiba Univ., 2. JAMSTEC, 3. GSJ, AIST, 4. AORI, Univ. Tokyo)
4:00 PM - 4:15 PM JST(7:00 AM - 7:15 AM UTC)

[T4-O-5]A Rotary Hydrothermal Friction Apparatus for Exploring Dynamic Faulting Processes in Fault Zones under Seismogenic Conditions

*Takehiro Hirose1, Hanaya Okuda1, Wataru Tanikawa1, Yohei Hamada1, Keishi Okazaki2, John D Bedford3 (1. JAMSTEC, 2. Hiroshima Univ., 3. Univ. Liverpool)
4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)

[2oral311-18-6add]Break

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

[T4-O-6]Experimental reproduction of fault-valve behavior and mineral vein formation driven by fluid pressure drop at the temperature of slow-to-fast seismogenic zones

*Ryoto TODA1, Masaoki UNO2, Atsushi OKAMOTO1 (1. Graduate School of Environmental Studies, TOHOKU University, 2. Graduate School of Science, The University of Tokyo)
4:45 PM - 5:00 PM JST(7:45 AM - 8:00 AM UTC)entry

[T4-O-7]Experimental study on rheological properties of pelitic schists in the Nankai Trough seismogenic zone

*Suzuka Yagi1, Keishi Okazaki1 (1. Hiroshima University)
5:00 PM - 5:30 PM JST(8:00 AM - 8:30 AM UTC)Highlight

[T4-O-8][Invited] Exploring Geological Fingerprints of Slow Earthquakes

*Kohtaro Ujiie1, Suguru Yabe2, Yuto Yamasaki1, Thomas Yeo1, Shota Komagino1 (1. University of Tsukuba, 2. AIST)
【ハイライト講演】  近年、スロー地震の発生源を経験したと考えられる付加体および高圧変成岩露出域における露頭観察により、スロー地震の発生像解明に関する研究が行われている．本発表では、上記研究の先駆者である講演者らによって明らかとなった、地震学的に観測される低周波微動の地質学的痕跡や、測地観測で観測できない速度での変形の痕跡などについて紹介していただく。 ※ハイライト講演とは．．．
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