[S-CG46] New Insights of Fluid-Rock Interactions: From Surface to Deep Subduction Zone

Tue. May 28, 2024 10:45 AM - 12:00 PM 301B (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), Atsushi Okamoto(Graduate School of Environmental Studies)

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 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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10:45 AM - 11:00 AM

[SCG46-01] Albitization due to interaction between seafloor basalt and fluid increases the potential of megathrust earthquakes in subduction zones

★Invited Papers

*Hanaya Okuda¹, André R. Niemeijer², Miki Takahashi³, Asuka Yamaguchi⁴, Christopher J. Spiers² (1.Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology, 2.Department of Earth Sciences, Utrecht University, 3.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 4.Atmosphere and Ocean Research Institute, University of Tokyo)

11:00 AM - 11:15 AM

[SCG46-02] Subducting slab-derived fluid preserved in exhumed mantle wedge serpentinite: Example from the Kamabuseyama serpentinite body, Kanto Mountains, Japan.

*Koki Aida¹, Simon Richard Wallis¹, Hirochika Sumino² (1.Department of Earth and Planetary Science, The University of Tokyo, 2.Research Center for Advanced Science and Technology, the University of Tokyo)

11:15 AM - 11:30 AM

[SCG46-03] Evolution of chemical composition in the Franciscan belt: insights from comparison with modern trench sediments

*Shogo Soejima¹, Simon Richard Wallis¹ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo)

11:30 AM - 11:45 AM

[SCG46-04] Carbonation experiments of mantle minerals

*Tatsuhiko Kawamoto¹, Yuto Suzuki¹, Nao Fukushima¹, Haruki Suzuki ¹, Takuma Iwata¹, Takayuki Nakatani², Toshihiro Suzuki², Akihiko Tomiya², Akiko Tanaka² (1.Department of Geoscience, Faculty of Science, Shizuoka University, 2.AIST)

11:45 AM - 12:00 PM

[SCG46-05] A scaling law for reaction-induced fracturing during mineral carbonation and hydration

*Masaoki Uno¹, Taiki Igarashi¹, Atsushi Okamoto¹ (1.Graduate School of Environmental Studies, Tohoku University)

Session information