Fluid in mineral interfaces-molecular simulations of structure and diffusion

Details Fluid in mineral interfaces-molecular simulations of structure and diffusion Fluid in mineral interfaces-molecular simulations of structure and diffusion

Apr 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29g..13d&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 7, pp. 13-1, CiteID 1109, DOI 10.1029/2001GL013208

Physics

6

Mineralogy, Petrology, And Mineral Physics: Sedimentary Petrology, Mineral Physics: Surfaces And Interfaces, Physical Properties Of Rocks: Transport Properties, Structural Geology: Role Of Fluids

Scientific paper

We study the effect of burial depth on thermodynamics and transport properties of fluids confined between mineral surfaces. The solvation curve and diffusion coefficients of fluid films confined between mineral surfaces have been obtained for different states of stress and temperature using Grand Canonical Monte Carlo and molecular dynamics simulations. Our results indicate that the mass transport coefficient (film thickness times diffusion coefficient) of the thin films of fluids trapped at grain contacts decrease by a factor 40 from 1 km to 3 km and 10 km. This effect has strong implications on the rates at which mechano-chemical processes of deformation (e.g. pressure solution) occur in the upper crust.

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