Dynamic weakening of the lower crust by KCl fluid infiltration: Insights from simultaneous analysis of fluid-rock reactions and deformation on high-grade metamorphic shear zones

Monami Hoshino

Presentation information

[E] Oral

S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG57] S-CG57 [E] Frontiers in Fluid-Rock Interactions: Linking Surface Processes to Deep Subduction Dynamics (Atsushi Okamoto)

Thu. May 28, 2026 9:00 AM - 10:30 AM Exhibition Hall Special Setting (6) (Exhibition Hall 7&8, Makuhari Messe)

Chairperson:Katayama Ikuo(Department of Earth and Planetary Systems Science, Hiroshima University), Yoshida Kazuki(High Energy Accelerator Research Organization)

9:45 AM - 10:00 AM

[SCG57-04] Dynamic weakening of the lower crust by KCl fluid infiltration: Insights from simultaneous analysis of fluid-rock reactions and deformation on high-grade metamorphic shear zones

*Monami Hoshino¹, Masaoki Uno¹, Yukinojo Koyama¹, Simon Richard Wallis¹, Tetsuo Kawakami², Fumiko Higashino², Tatsuro ADACHI³ (1. Department of Earth and Planetary Science, Graduate School of Science, the University of Tokyo, 2. Graduate School of Science, Kyoto University, 3. Kyushu University)

Keywords:Fluid–rock reaction, Crustal strength, Lower crust, Reactive-transport modeling, Shear zone, High-grade metamorphic rocks