Feedback between high-pressure genesis of abiotic methane and strain localization in subducted carbonate rocks.

ABSTRACT: Fluid-rock interactions exert key control over rock rheology and strain localization. Redox may significantly affect the reaction pathways and, thereby, the mechanical properties of the rock. This effect may become critical in volatile-rich, redox sensitive rocks such as carbonate-rich lithologies, the breakdown of which can significantly modify the net volume change of fluid-mediated reactions. Subduction focus the largest recycling of crustal carbonates and the most intense seismic activity on Earth. Nevertheless, the feedbacks between deep carbon mobilization and deformation remain poorly investigated. We present quantitative microstructural results from natural samples and thermodynamic modeling indicating that percolation of reducing fluids exerts strong control on the mobilization of

SUBMITTER: Giuntoli F 

PROVIDER: S-EPMC7300122 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature