[S-CG57] Frontiers in Fluid-Rock Interactions: Linking Surface Processes to Deep Subduction Dynamics

[SCG57-P14] Unraveling Fe oxidation state and H₂ generation during serpentinization of the lower crust to the upper mantle using XANES analysis

*Kazuki Yoshida¹, Atsushi Okamoto², Ryosuke Oyanagi^3,4, Masakazu Fujii^5,6, Kenta K Yoshida⁴, Niwa Yasuhiro^1,6, Takeichi Yasuo^1,6, Masao Kimura^1,6 (1. High Energy Accelerator Research Organization, 2. Tohoku Univ., 3. Kokushikan Univ., 4. Japan Agency for Marine-Earth Science and Technology, 5. National Institute of Polar Research, 6. The Graduate University for Advanced Studies)

Keywords:Serpentinization, Natural hydrogen, XAFS, Oman Ophiolite