[S-CG58] New Developments in fluid-rock Interactions: From Surface to Deep Subduction Zone

Sun. May 21, 2023 1:45 PM - 3:00 PM International Conference Room (IC) (International Conference Hall, Makuhari Messe)

convener:Atsushi Okamoto(Graduate School of Environmental Studies), Jun Muto(Department of Earth Sciences, Tohoku University), Ikuo Katayama(Department of Earth and Planetary Systems Science, Hiroshima University), Junichi Nakajima(Department of Earth and Planetary Sciences, Tokyo Institute of Technology), Chairperson:Jun Muto(Department of Earth Sciences, Tohoku University), Ikuo Katayama(Department of Earth and Planetary Systems Science, Hiroshima University)

Fluid circulation and fluid-mediated reactions and mass transport in the Earth's interior govern active phenomena within crust and mantle, such as earthquakes, volcanism, metamorphism, and formation of ore deposits. In this session, we will discuss the micro- to field-scale fluid-rock interactions related to chemical reactions, mass transport, deformation from near-surface to deep subduction zone, and their impact on global elemental cycles, surface environments and seismicity. Recent progress of various studies on fluid-rock interactions in geothermal systems, mineralization, serpentinization, carbonation, metamorphism and metasomatism in deep subduction zones are welcome. We would like to comprehensively discuss the impact of these processes on global element cycles, surface environments and seismic activities. We welcome research from various approaches such as field studies, laboratory experiments, geophysical observations, numerical simulations.

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1:45 PM - 2:00 PM

[SCG58-06] Intraslab hydrated cracks and seismogenesis: insight from anisotropic tomography

★Invited Papers

*Dapeng Zhao¹, Zewei Wang¹ (1.Department of Geophysics, Tohoku University)

2:00 PM - 2:15 PM

[SCG58-07] 3D Distribution of Crustal Fluids in the Central Tohoku Region

*Shogo Masuda¹, Yasuo Ogawa^1,2, Masahiro Ichiki³ (1.Tokyo Institute of Technology, 2.Volcanic Fluid Research Center, School of Sciences, Tokyo Institute of Technology, 3.Research Center for Prediction of Earthquakes and Volcanic Eruptions, Graduate School of Science, Tohoku University)

2:15 PM - 2:30 PM

[SCG58-08] Temporal Variation of P- and S-wave attenuation in Fluid Pathway

*Ito Yosuke¹, Junichi Nakajima¹ (1.Tokyo Institute of Technology)

2:30 PM - 2:45 PM

[SCG58-09] Slow stress-drop due to sintering of crushed particles of feldspar in granitoids during faulting under hydrothermal condition

*Miki Takahashi¹, Manami Kitamura², Norio Shigematsu¹ (1.Institute of Earthquake and Volcano Geology, Geological Survey of Japan, AIST, 2.Institute for Geo-Resources and Environment, Geological Survey of Japan, AIST)

2:45 PM - 3:00 PM

[SCG58-10] Physical conditions of magmatic/hydrothermal fracturing at middle-lower crust in a high-temperature metamorphic terrane: Records of subvolcanic deep low frequency earthquakes?

*Masaoki Uno¹, Diana Mindaleva¹, Takumi Nara¹, Tetsuo Kawakami², Fumiko Higashino², Tatsuro ADACHI³, Noriyoshi Tsuchiya¹ (1.Tohoku University, 2.Kyoto University, 3.Kyushu University)