Solid Earth Sciences (S)
Session Sub-category Complex & General(CG)
Session ID S-CG46
Title New Insights of Fluid-Rock Interactions: From Surface to Deep Subduction Zone
Short Title Fluid-rock interaction
Main Convener Name Atsushi Okamoto
Affiliation Graduate School of Environmental Studies
Co-Convener 1 Name Jun Muto
Affiliation Department of Earth Sciences, Tohoku University
Co-Convener 2 Name Ikuo Katayama
Affiliation Department of Earth and Planetary Systems Science, Hiroshima University
Co-Convener 3 Name Junichi Nakajima
Affiliation Department of Earth and Planetary Sciences, Tokyo Institute of Technology
Session Language 
J
Scope 
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.
Presentation Format Oral and Poster presentation
Invited Authors Hanaya Okuda (Kochi Institute for Core Sample Research, Japan Agency for Marine-Earth Science and Technology)
Hiroshi Sakuma (National Institute for Materials Science)
Keisuke Yoshida (Tohoku University)
Aitaro Kato (Earthquake Research Institute, the University of Tokyo)
Time Presentation No Title Presenter
Oral Presentation May 28 AM2
10:45 - 11:00 SCG46-01 Albitization due to interaction between seafloor basalt and fluid increases the potential of megathrust earthquakes in subduction zones Hanaya Okuda
11:00 - 11:15 SCG46-02 Subducting slab-derived fluid preserved in exhumed mantle wedge serpentinite: Example from the Kamabuseyama serpentinite body, Kanto Mountains, Japan. Koki Aida
11:15 - 11:30 SCG46-03 Evolution of chemical composition in the Franciscan belt: insights from comparison with modern trench sediments Shogo Soejima
11:30 - 11:45 SCG46-04 Carbonation experiments of mantle minerals Tatsuhiko Kawamoto
11:45 - 12:00 SCG46-05 A scaling law for reaction-induced fracturing during mineral carbonation and hydration Masaoki Uno
Oral Presentation May 28 PM2
15:30 - 15:45 SCG46-06 A method to enhance CO2 geological storage and mineralization using biodegradable chelating agents Jiajie Wang
15:45 - 16:00 SCG46-07 Acidic alteration process of andesite in the Unzen Jigoku, Nagasaki prefecture, Japan: based on the occurrence of alteration minerals and whole-rock composition Hikaru Sakamoto
16:00 - 16:15 SCG46-08 Effect of dissolved silica on the electrical conductivity of H2O-NaCl fluid in the lower crust Hiroshi Sakuma
16:15 - 16:30 SCG46-09 Three-dimensional deep electrical resistivity structure beneath the Kii Peninsula, Southwestern Japan Akira Watanabe
Oral Presentation May 29 AM1
09:00 - 09:15 SCG46-10 Recent crustal earthquakes in Japan related to fluid movement Keisuke Yoshida
09:15 - 09:30 SCG46-11 Does an asperity recover its shear strength in a short interval? Junichi Nakajima
09:30 - 09:45 SCG46-12 Traces of fluid pathway in underplating oceanic crust left at the lithologic boundary of pelitic and mafic schist Matsuno Satoshi
09:45 - 10:00 SCG46-13 Analysis of water-rock reactions in fault rocks using the pseudosection: an example from a ductile shear zone in the crust-mantle boundary of the Oman ophiolite Natsume Itsuki
10:00 - 10:15 SCG46-14 Fluid migration processes in oceanic plates based on vein mapping in the Oman Ophiolite Genya Sakamoto
10:15 - 10:30 SCG46-15 Numerical simulations of spontaneous subduction initiation in the oceanic lithosphere: Effects of rheology of hydrated fracture zones and slab dehydration Misuzu Ishikawa
Oral Presentation May 29 AM2
10:45 - 11:00 SCG46-16 Implications of fault-valve behavior illuminated by early aftershock evolutions Aitaro Kato
11:00 - 11:15 SCG46-17 Trans-crustal fluid distribution in the central Tohoku region Yasuo Ogawa
11:15 - 11:30 SCG46-18 Frictional characteristics on antigorite serpentine at the condition of subduction zone Tomohiro Takenawa
11:30 - 11:45 SCG46-19 Experimental investigation of the post-antigorite reaction process in cold subducting slabs Tomoaki Kubo
11:45 - 12:00 SCG46-20 Fluids from slab remnant and 2013 Wyoming upper-mantle earthquakes Dapeng Zhao
12:00 - 12:15 SCG46-21 The flat 410 and 660 discontinuities below the subducting Pacific slab beneath northeastern Japan Kazuki Miyazaki
Presentation No Title Presenter
Poster Presentation May 28 PM3
SCG46-P01 Behavior of the unfavorably oriented faults due to fluid injection: implication from laboratory experiments Manami Kitamura
SCG46-P02 Metasomatic alteration and deformation recorded in a tectonic mélange from the Nagasaki metamorphic rocks, Nomo Peninsula, Japan Matsutake Koumi
SCG46-P03 Fluid movement in subduction zones based on measurements of elastic wave velocities and electrical resistivity of serpentinite and peridotite Tomohiro Ito
SCG46-P04 Multi-generation fluid inclusions in ophicarbonates in Oman and Western Alps ophiolite Tatsuhiko Kawamoto
SCG46-P05 Simultaneous measurements of deformation, stress, and permeability for the hydration reaction of MgO Fukuma Sakashita
SCG46-P06 Deformation and hydrothermal alteration processes of the basal peridotites in the central Palawan Ophiolite and their effects on subduction initiation process Ken-ichi Hirauchi
SCG46-P07 Alteration of clinopyroxene veins during multi-stage serpentinization at the crust-mantle section from the Bayankhongor ophiolite, Mongolia Nomin Tumurkhuu
SCG46-P08 A shallow subsurface electrical resistivity model beneath Zao volcano, and interpretation of the shallow conductive hydrothermal alteration layer Masahiro Ichiki
SCG46-P09 Deformation styles and fluid-rock interaction of Minoo accretionary complex in the Tamba belt Tatsuru Fukuta
SCG46-P10 Nondestructive measurement of water content from neutron imaging of rock samples using RANS Misaki Hasegawa
SCG46-P11 Characteristics in structural geology and geochemistry of the Mio Mélange in the Miyama Formation, Hidakagawa Group, Shimanto Belt Yoshiki Kinoshita
SCG46-P12 Slip characteristics of fault damaged by rapid decompression under hydrothermal conditions. Asumi Matsumiya
SCG46-P13 A machine learning-based method for discriminating the ore-forming process in magmatic-hydrothermal systems Denghui Zhu
SCG46-P14 Hydro-mechanical-chemical coupled modeling revealing fracture flow alteration and its impact on rock physical properties Kazuki Sawayama
SCG46-P15 Study on focal mechanism and in-situ stress evolution process during the development of Gonghe geothermal field in China Hongyu Zhai
SCG46-P16 Natural chelating agents accelerate weathering of minerals in natural environments Jiajie Wang
SCG46-P17 Evaluation of reactive surface area during weathering of granite: an example of Mt. Gagara, Hiroshima Hikaru Okamura
SCG46-P18 In-situ recrystallization of feldspars under supercritical geothermal conditions revealed by using drilling cuttings of Kakkonda Granite Masayoshi Hoshida
SCG46-P19 A crustal electrical resistivity model beneath Aizu-Yonezawa-Azuma district estimated from a broadband magnetotelluric observation network over southern Tohoku, NE Japan Naoyuki Wakao
SCG46-P20 Seismic fault slip variation caused by smectite swelling in shallow subduction zones Jun Kameda
SCG46-P21 Effect of lithology on hydrogen generation by serpentinization reaction in the oceanic lithosphere Kazuki Yoshida
SCG46-P22 Network of thermal crack in peridotite inferred from measurement of elastic wave velocity and electrical resistivity Kohei Hatakeyama
SCG46-P23 Deformation experiments of the Oman peridotite and the effect of carbonation on the physical properties Jion Kubota
SCG46-P24 Formation of spinifex-like textured olivine during antigorite dehydration: an experimental study at 200–700 MPa Takayuki Nakatani
SCG46-P25 Exposed dike swarms as geological analogue to subvolcanic deep low-frequency earthquakes (DLFEs) in terms of stress state and moment magnitude Takumi Nara