Caracterización hidrogeoquímica del sistema acuífero kárstico de Sierra de Gádor (Almería, sureste de España)
- J.L. Guerrero 1
- A. Vallejos 2
- F. Sánchez-Martos 2
- J.C. Cerón 1
- A. Pulido-Bosch 2
- J.P. Bolívar 1
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1
Universidad de Huelva
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2
Universidad de Almería
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ISSN: 1576-5172
Année de publication: 2016
Titre de la publication: IX CONGRESO GEOLÓGICO DE ESPAÑA
Número: 16
Pages: 339-342
Type: Article
D'autres publications dans: Geotemas (Madrid)
Résumé
Sierra de Gádor is a karstic macrosystem located in the province of Almería (southeast of Spain). In this semiarid environment, the two main economical activities – agriculture and tourism – are supported by the water resources from Sierra de Gádor, hence the interest in understanding this aquifer system. The aim of this work is to deep into the knowledge of factors and processes that control the groundwater composition. The studied aquifer system shows a great hydrochemical variability and heterogeneity, with a predominance of bicarbonate water types, but also water types from sodium chloride to calcium sulphate. The results have shown that the main reactions that take place are carbonates precipitation-dissolution and secondly, sulphate dissolution. The waters are saturated with respect to calcite, dolomite and aragonite, and subsaturated in gypsum/anhydrite. Dissolution of chloride salts is also observed, but with a lower influence, being the water samples clearly subsaturated in halite. The minor ions Sr2+ and Ba2+ play a certain role in these waters; in most cases saturated in barite and subsaturated for Sr minerals phases.