Metamorphism of Marbles: Role of Feedbacks between Reaction, Fluid Flow, Pore Pressure and Creep

In many applications of chemical transport modelling to geological problems, it is very important to take into account the changes to the transport properties of the porous medium that will result from chemical reactions driven by the component fluxes which are being modelled. This is particularly true where the reactions involve breakdowr of carbonate minerals, because they produce very large changes in solid volume, but there are many other fluid-rock reactions, involving both precipitation and dissolution, that are capable of perturbing the pattern of flow that originally triggered the reaction. This paper is concerned with the growth of calc-silicate minerals replacing marbles in metamorphism, which we model through the simplest possible metamorphic reaction: (17.1)$$ Cal + Qtz \rightleftharpoons Wo + C{O_2} $$ However, our approach is equally appliable a wide range of skarn-forming reactions.