Evolução da salinidade das águas subterrâneas no Aqüifero Mauriti - Bacia Sedimentar do Araripe

Abstract

This study has the objective to trace the hydrochemical evolution of the groundwater of the Sedimentary Basin of Araripe – in the southest of the State of Ceará. Two water samples, one considered as initial water, at the start of the hidrochemical evolution, and the other one, the final water, with evolution completed. The initial water is supposed to travel in a flow path through the geological formations of the Basin, which have a specific and caracteristic mineralogy. On its way, this water suffers geochemical processes that change its chemical composition from the initial to the final one. That way, the final water represents its evolutionary history. We use in this simulation of the chemical evolution the mathematical model Netpath, an interactive code to model geochemical reations along a flow path. The simulation is based on the local geology, mineralogy and petrology and on the chemical analysis of the “initial” and the “final” water.