Geochemical evolution of groundwater in an evaporite karst system: Brujuelo area (Jaén, Spain)
2016
Gil-Márquez, José Manuel | Barberá-Fornell, Juan Antonio | Andreo-Navarro, Bartolomé | Mudarra-Martínez, Matías
Chemical evolution of groundwater along two main flowpaths was studied in Brujuelo area, an evaporite plateau characterized by the presence of wetlands and drained by hyper-saline springs. Major ions were analyzed, saturation indexes of the main mineral species were computed, and inverse geochemical modeling was performed. Results show a relationship between elevation and water mineralization, indicating that drainage at higher altitude (brackish water) may be associated to gravity-driven flows while lower altitude springs could drain regional groundwater flows (brine water). Modeling results strongly support the hypothesis that most of the selected springs geochemically evolve in a common (S-N) flowpath.
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