The 133rd Annual Meeting of the Geological Society of Japan
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Session OralT3[Topic] Deformation and reaction of rocks and mineralsEDI: Equality, Diversity, Inclusion

T3[Topic] Deformation and reaction of rocks and minerals

Mon. Sep 14, 2026 8:45 AM - 12:00 PM JST
Mon. Sep 14, 2026 11:45 PM - 3:00 AM UTC
oral room 1(Lecture hall)
Chiar:Hanaya Okuda, Sreehari Lakshmanan, Hiroaki Yokoyama, Masaoki UNO
8:45 AM - 9:00 AM JST(11:45 PM - 12:00 AM UTC)

[T3-O-13]Microstructural development and changes in water distribution by plastic deformation of quartz

*Junichi FUKUDA1 (1. Osaka Metropolitan University)
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9:00 AM - 9:15 AM JST(12:00 AM - 12:15 AM UTC)ECS: Early Career Scientist

[T3-O-14]Transition in crystallographic preferred orientation of quartz: Insights from deformation experiments on single crystals of wet quartz

*Hiroaki YOKOYAMA1,2, David Wallis3, Jun Muto2 (1. Hiroshima University, 2. Tohoku University, 3. University of Cambridge)
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9:15 AM - 9:30 AM JST(12:15 AM - 12:30 AM UTC)entryECS: Early Career Scientist

[T3-O-15]Quantification of quartz recrystallized microstructures: Influence of EBSD data processing conditions

*Kazuma NAKAKOJI1, Ichiko SHIMIZU2, Katsuyoshi Michibayashi3 (1. The University of Tokyo, 2. Kyoto University, 3. Nagoya University)
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9:30 AM - 9:45 AM JST(12:30 AM - 12:45 AM UTC)entryECS: Early Career Scientist

[T3-O-16]Improving accuracy of differential stress measurement using solid-medium deformation apparatus: Development of low-softening-point glass liquid cell and application to deformation experiment of marble

*Takaya NAGAI1, Ichiko SHIMIZU1 (1. Kyoto University)
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9:45 AM - 10:00 AM JST(12:45 AM - 1:00 AM UTC)

[T3-O-17]Slip Behaviors of fault plane associated with fluid

*Noriyoshi Tsuchiya1, Nobuo Hirano2, Kazumasa Sueyoshi2 (1. National Institute of Technology, Hachinohe College, 2. Tohoku University)
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10:00 AM - 10:15 AM JST(1:00 AM - 1:15 AM UTC)

[T3-O-18]Frictional Properties of Carbonate Fault Mirrors and Their Mechanical Role in the Earthquake Cycle

*Takehiro Hirose1, Uhmb Tae-Hoon, Yohan Park (1. Kochi Institute for Core Sample Research, JAMSTEC)
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10:15 AM - 10:30 AM JST(1:15 AM - 1:30 AM UTC)

[T3-O-19]Density decrease and frictional heating in the latest slip zone of the Neodani Fault Zone

*Tomoyuki OHTANI1, Tsuyoshi Maeda2, Yusei Yamada2 (1. Gifu University, 2. Graduate School, Gifu University)
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10:30 AM - 10:45 AM JST(1:30 AM - 1:45 AM UTC)

Break

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)ECS: Early Career Scientist

[T3-O-20]On low frictional strengths of clay minerals

*Hanaya OKUDA1, Miki TAKAHASHI2 (1. Kochi Institute for Core Sample Research, JAMSTEC, 2. Geological Survey of Japan, AIST)
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11:00 AM - 11:15 AM JST(2:00 AM - 2:15 AM UTC)entry

[T3-O-21]Effects of spatiotemporal heterogeneity in pore pressure distribution along a fault plane on fault reactivation

*Riku IWATA1,2, Manami Kitamura2, Shin-ichi Uehara1 (1. Toho University Graduate School of Science, 2. GSJ, AIST)
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11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)entry

[T3-O-22]Fluid-rock reaction and fault weakening within a fault zone in a deep subduction zone: an example from the Sanbagawa metamorphic belt, Kanto mountains

*Tatsuru Fukuta1, Kazuki Yoshida2, Otgonbayar Dandar1, Ryosuke Oyanagi1,3, Atsushi Okamoto1 (1. Tohoku Univ., 2. KEK, 3. JAMSTEC)
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11:30 AM - 11:45 AM JST(2:30 AM - 2:45 AM UTC)entry

[T3-O-23]Experimental investigation of coseismic fault slip behavior under hydrothermal conditions using olivine and granite gouges

*Miku HIDAKA1,2, Takahiro SUZUKI3, Keishi OKAZAKI1,2, Hanaya OKUDA2, Takehiro HIROSE2,1 (1. Hiroshima University, 2. Kochi Institute for Core Sample Research, JAMSTEC, 3. MARINE WORKS JAPAN)
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11:45 AM - 12:00 PM JST(2:45 AM - 3:00 AM UTC)

[T3-O-24]Carbon and oxygen isotopes of calcite veins record repeated fault sealing by high-temperature fluids in western Tottori Prefecture, Japan

*Kiyokazu OOHASHI1, Hirokazu KATO2, Yusuke MIYAJIMA1, Kenta KOBAYASHI3 (1. National Institute of Advanced Industrial Science and Technology (AIST), 2. Teikyo University of Science, 3. Niigata University)
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