Hydrogeochemistry and Water Quality

The waters associated with carbonate aquifers are of calcium and/or calcium–magnesium carbonate types, with the ratio r Mg/r Ca increasing with the dolomite content of the rock, possibly exceeding that of the unit. Classic texts to consult on the matter are: Hem [1], Catalan [2], Custodio [3, 4, 5], Appelo and Postma in Chap. 2 [1] and Fagundo (in Chap. 2 [4] and [5]).