[S-CG64] Brittle-Ductile Transition and Supercritical Geofluids for Crustal Energy in Island Arc

Mon. May 21, 2018 10:45 AM - 12:15 PM A11 (Tokyo Bay Makuhari Hall)

convener:Noriyoshi Tsuchiya(Graduate School of Environmental Studies, Tohoku University), Hiroshi Asanuma(AIST), Yasuo Ogawa(東京工業大学理学院火山流体研究センター), Chairperson:Okamoto Atsushi, Uno Masaoki (東北大学)

Nature of rock mass below the brittle-ductile transition (BDT) is of great scientific interest to understand various phenomenon in the Earth's crust. We will review and discuss current understanding of characteristics the rock mass below the BDT, including composites, stress, failure mechanism induced by liquid injection and associates earthquake generation mechanism, and water rock interaction, considering engineered geothermal development in the BDT. Discussions on the possible phenomena in the geothermal development in the BDT will be followed in this session.
New drilling technology is key of issues. This session will cover advanced drilling technology under high temperature conditions for energy extraction.

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10:45 AM - 11:00 AM

[SCG64-07] Magma genesis and plumbing in subduction zone: Cargos of heat and water transports

*Jun-Ichi Kimura¹ (1.Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Scienc and Technology)

11:00 AM - 11:15 AM

[SCG64-08] Numerical simulation of mechanical and chemical permeability evolution near a cooling pluton and its impacts on the formation of natural supercritical geothermal resources

*Norihiro Watanabe¹, Hanae Saishu¹, Noriaki Watanabe² (1.Renewable Energy Research Center, National Institute of Advanced Industrial Science and Technology, 2.Department of Environmental Studies for Advanced Society, Graduate School of Environmental Studies, Tohoku University)

11:15 AM - 11:30 AM

[SCG64-09] Budget of slab-derived water within arc crust: Implications from crust-melt reaction zones and fossil caldera differentiation process

*Masaoki Uno¹, Noriyoshi Tsuchiya¹ (1.Graduate School of Environmental Studies, Tohoku University)

11:30 AM - 11:45 AM

[SCG64-10] Lower crustal magmatic processes: examination of isotopic compositions of Quaternary frontal arc volcanoes of NE Japan

*Masao Ban¹, Jun-Ichi Kimura², Toshiro Takahashi³, Yuka Uzawa⁴, Tsukasa Ohba⁵, Akihiko Fujinawa⁶, Shintaro Hayashi⁵, Takeyoshi Yoshida⁷, Takashi Miyazaki², Qing Chan², Ryoko Senda⁸, Bogdan S Vaglarov², Yoshiyuki Tatsumi⁹ (1.Yamagata Univ., 2.JAMSTEC, 3.Niigata Univ., 4.Chiba Institute of Technology, 5.Akita Univ., 6.Ibaraki Univ., 7.Tohoku Univ., 8.Kyushu Univ., 9.Kobe Univ.)

11:45 AM - 12:00 PM

[SCG64-11] Modeling and comparison of supercritical geothermal systems around the world

*Kyosuke Okamoto¹, Hiroshi Asanuma¹, Norio Yanagisawa¹, Yusuke Yamaya¹, Norihiro Watanabe¹, Takuya ISHIBASHI¹, Hanae Saishu¹, Toru Mogi², Kazuya Ishitsuka², Noriyoshi Tsuchiya³, Atsushi Okamoto³, Shigemi Naganawa⁴, Yasuo Ogawa⁵, Yasuhiro Fujimitsu⁶, Keigo Kitamura⁶, Tatsuya Kajiwara⁷, Seiki Horimoto⁸, Kuniaki Shimada⁸ (1.National Institute of Advanced Industrial Science and Technology, 2.Hokkaido University, 3.Tohoku University, 4.Akita University, 5.Tokyo Institute of Technology, 6.Kyushu University, 7.Geothermal Engineering Co., Ltd., 8.Teiseki Drilling Co.,Ltd)

12:00 PM - 12:15 PM

[SCG64-12] Reconstruction of zircon U–series dating for investigation of high-temperature magma process

*Shuhei Sakata¹, Hideki Iwano², Tohru Danhara², Takeshi Ohno¹, Takafumi Hirata³ (1.Gakushuin University, 2.Kyoto Fission-Track, 3.The University of Tokyo)

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