Insights on the deep carbon cycle from the electrical conductivity of carbon-bearing aqueous fluids.

ABSTRACT: The dehydration and decarbonation in the subducting slab are intricately related and the knowledge of the physical properties of the resulting C-H-O fluid is crucial to interpret the petrological, geochemical, and geophysical processes associated with subduction zones. In this study, we investigate the C-H-O fluid released during the progressive devolatilization of carbonate-bearing serpentine-polymorph chrysotile, with in situ electrical conductivity measurements at high pressures and temperatures. The C-H-O fluid produced by carbonated chrysotile exhibits high electrical conductivity compared to carbon-free aqueous fluids and can be an excellent indicator of the migration of carbon in subduction zones. The crystallization of diamond and graphite indicates that the oxidized C-H-O fluids a

SUBMITTER: Manthilake G 

PROVIDER: S-EPMC7881151 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature