Hidrogeología isotópica de los Valles de Cuautla y Yautepec, México
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Abstract
Isotopic, chemical and piezometric information from groundwater of aquifers'located in the Eastern Basins of the Morelos State are presented. These results, mainly tritium, show that in the upper volcanic aquifer, the residence time of sorne of the groundwater is less than 40 years, but an older component is also observed. The récharge areas of tbis aquifer are the Chichinautzin volcanic range and the Popocatépetl volcano. The groundwater flow is N-S in the Yautepec valley and NE-SW in the CuautIa valley. Tite limestolle aquifer is<:haracterized by a regional groundwater flow originated in the Popocatépetl volcano and the Chichinautzin mountains range. Local groundwater flow is also observed in outcrops areas. S-34 data show that the source of groundwater sulfate in the limestone aquifer is anhydrite deposits of Cretaceous age, which are intercalated in the lower part of this aquifer.
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