Discharge of deeply rooted fluids from submarine mud volcanism in the Taiwan accretionary prism.

ABSTRACT: Qualitative and quantitative assessments of fluid cycling are essential to address the role and transport of deeply sourced fluids in subduction systems. In this study, sediment cores distributed across a submarine mud volcano (SMV) offshore southwestern Taiwan were investigated to determine the characteristics of fluids generated through the convergence between the Eurasian and Phillippine Sea Plates. The low dissolved chloride concentration combined with the enrichment of ¹⁸O, and depletion of ²H of pore fluids suggest the discharge of deep freshwater formed by smectite dehydration at an equilibrium temperature of 100 to 150 °C. The upward fluid velocities, decreasing from 2.0 to 5.0 cm yr^-1 at the center to a negligible value at margin sites, varied with

SUBMITTER: Chen NC 

PROVIDER: S-EPMC6962449 | biostudies-literature | 2020 Jan

REPOSITORIES: biostudies-literature