Japan Geoscience Union Meeting 2025

Keishi Okazaki

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Convener, Chairperson

Mon. May 26, 2025 1:45 PM - 3:15 PM 106 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | S (Solid Earth Sciences )
  • | S-CG Complex & General

[S-CG51] Hard-Rock Drilling Science: Continental and Deep-Sea Drilling, and Ophiolite

convener:Takashi Hoshide(Faculty of International Resource Sciences, Akita University), Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Chairperson:Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Takashi Hoshide(Faculty of International Resource Sciences, Akita University)

Mon. May 26, 2025 3:30 PM - 5:00 PM 106 (International Conference Hall, Makuhari Messe)

  • [E] Oral
  • | S (Solid Earth Sciences )
  • | S-CG Complex & General

[S-CG51] Hard-Rock Drilling Science: Continental and Deep-Sea Drilling, and Ophiolite

convener:Takashi Hoshide(Faculty of International Resource Sciences, Akita University), Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Chairperson:Takashi Hoshide(Faculty of International Resource Sciences, Akita University), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST))

Mon. May 26, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [E] Poster
  • | S (Solid Earth Sciences )
  • | S-CG Complex & General

[S-CG51] Hard-Rock Drilling Science: Continental and Deep-Sea Drilling, and Ophiolite

convener:Takashi Hoshide(Faculty of International Resource Sciences, Akita University), Yumiko Harigane(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology (AIST)), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University)

Tue. May 27, 2025 9:00 AM - 10:30 AM 106 (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-GI General Geosciences, Information Geosciences & Simulations

[M-GI28] Drilling Earth Science

convener:Manami Kitamura(National Institute of Advanced Industrial Science and Technology ), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Go-Ichiro Uramoto(Kochi University), Akira Ijiri(Kobe University), Chairperson:Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Akira Ijiri(Kobe University), Go-Ichiro Uramoto(Kochi University), Manami Kitamura(National Institute of Advanced Industrial Science and Technology)

Tue. May 27, 2025 10:45 AM - 12:15 PM 106 (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-GI General Geosciences, Information Geosciences & Simulations

[M-GI28] Drilling Earth Science

convener:Manami Kitamura(National Institute of Advanced Industrial Science and Technology ), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Go-Ichiro Uramoto(Kochi University), Akira Ijiri(Kobe University), Chairperson:Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Akira Ijiri(Kobe University), Go-Ichiro Uramoto(Kochi University), Manami Kitamura(National Institute of Advanced Industrial Science and Technology)

Tue. May 27, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Poster
  • | M (Multidisciplinary and Interdisciplinary)
  • | M-GI General Geosciences, Information Geosciences & Simulations

[M-GI28] Drilling Earth Science

convener:Manami Kitamura(National Institute of Advanced Industrial Science and Technology ), Keishi Okazaki(Earth and Planetary Systems Science Program, Hiroshima University), Go-Ichiro Uramoto(Kochi University), Akira Ijiri(Kobe University)

Speaker, Author, Co-Author

Fri. May 30, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Poster
  • | S (Solid Earth Sciences )
  • | S-SS Seismology

[S-SS10] Fault Rheology and Earthquake Physics

Wed. May 28, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [E] Poster
  • | S (Solid Earth Sciences )
  • | S-CG Complex & General

[S-CG45] Science of slow-to-fast earthquakes

5:15 PM - 7:15 PM

[SCG45-P01] Interaction between fluid phase transition induced by frictional heat, formation of off-fault damage, and styles of on-fault slip

*Hanaya Okuda1, Wataru Tanikawa1, Yohei Hamada1, Keishi Okazaki2,1, John D Bedford3,1, Takehiro Hirose1 (1.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 2.Earth and Planetary Systems Science Program, Hiroshima University, 3.Department of Earth, Ocean and Ecological Sciences, University of Liverpool)

Fri. May 30, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Poster
  • | S (Solid Earth Sciences )
  • | S-CG Complex & General

[S-CG54] New Insights of Fluid-Rock Interactions: From Surface to Deep Subduction Zone

Thu. May 29, 2025 10:45 AM - 12:15 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | S (Solid Earth Sciences )
  • | S-CG Complex & General

[S-CG62] Rheology, fracture and friction in Earth and planetary sciences

Thu. May 29, 2025 3:30 PM - 5:00 PM Convention Hall (CH-B) (International Conference Hall, Makuhari Messe)

  • [J] Oral
  • | S (Solid Earth Sciences )
  • | S-CG Complex & General

[S-CG62] Rheology, fracture and friction in Earth and planetary sciences

4:00 PM - 4:15 PM

[SCG62-13] CPO of the Earth’s lower mantle minerals in situ at high pressure-temperature conditions inferred from torsional deformation experiments using a rDAC

*Bunrin Natsui1, Shintaro Azuma1, Keishi Okazaki2,3, Kentaro Uesugi4, Masahiro Yasutake4, Saori Kawaguchi4, Steeve Gréaux5, Ryuichi Nomura6, Kenji Ohta1 (1.Institute of Science Tokyo, 2.Hiroshima University, 3.Japan Marine Science and Technology Center, 4.Japan Synchrotron Radiation Research Institute, 5.Ehime University, 6.Kyoto University)

Thu. May 29, 2025 5:15 PM - 7:15 PM Poster Hall (Exhibition Hall 7&8, Makuhari Messe)

  • [J] Poster
  • | S (Solid Earth Sciences )
  • | S-CG Complex & General

[S-CG62] Rheology, fracture and friction in Earth and planetary sciences

5:15 PM - 7:15 PM

[SCG62-P07] Investigation of Microstructural Observation and Crystal Preferred Orientation Analysis in rDAC Deformed Samples Using XRD and EBSD

*Bunrin Natsui1, Shintaro Azuma1, Masahiro Yasutake2, Yukinojo Koyama3, Keishi Okazaki4,5, Kentaro Uesugi2, Saori Kawaguchi2, Ryuichi Nomura6, Kenji Ohta1 (1.Institute of Science Tokyo, 2.Japan Synchrotron Radiation Research Institute, 3.The University of Tokyo, 4.Hiroshima University, 5.Japan Marine Science and Technology Center, 6.Kyoto University)