Abstract
A general differential equation, describing the dissolution of minerals and the transport of their products in porous media, is derived and simplified for the case of steady-state non-equilibrium distribution of solutes in confined carbonate aquifers. The numerical solution of the equation, which represents the hydrogeochemical model of a given aquifer, is based on the transformation of aquifer space coordinates into time coordinates of “tracing points” moving along groundwater streamlines, followed by an inverse transformation which yields theoretical water quality maps. The applicability of the model for integrating hydrologic and geochemical data in aquifers is demonstrated for the limestone aquifer of Roswell, New Mexico.
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