NONEQUILIBRIUM THERMODYNAMICS IN METAMORPHISM

Department of Earth and Planetary Sciences Johns Hopkins University Baltimore, Maryland 21218 [Pg.381]

The first step is to formulate the necessary kinetic equations, and work out values for the appropriate kinetic coefficients from a combination of experiment, theory, and observations on natural rocks. There are several approaches we might use, but the formalism of nonequilibrium thermodynamics is particularly convenient for dealing with metamorphic processes, because it emphasizes the chemical potentials of components, which are often easier to evaluate thcin species concentrations. This paper reviews some ways in which the approach can be used to model the kinetics of metamorphic processes which can be studied in outcrop or thin-section it will not consider regional processes such as heat flow or fluid convection (eg. Reed, 1970). [Pg.381]

1 Financial support provided by Earth Sciences Section, National Science Foundation, NSF Grant DES 71-00406-A 02. [Pg.381]

Fraser (ed.J, Thermodynamics in Geology, 381-403. All Rights Reserved. Copyright 1911 by D. Reidel Publishing Company, Dordrecht-Holland. [Pg.381]

The kinetic coefficients in eqs. (1.1) and (1.2) are matrices of phenomenological coefficients, defined so as to relate the fluxes to the corresponding potentials. Both matrices are symmetrical, so that = ji cross-terms, [Pg.382]

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