Geochemical Evolution of Groundwater in an Evaporite Karst System: Brujuelo Area (Jaén, S Spain)
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- 作者：José ; Manuel Gil-Má ; rquez ; josemgil@uma.es ; Juan Antonio Barberá ; Bartolomé ; Andreo ; Matí ; as Mudarra
- 关键词：Evaporite rocks ; groundwater flowpath ; hyper-saline springs ; geochemical evolution ; inverse modeling
- 刊名：Procedia Earth and Planetary Science
- 出版年：2017
- 出版时间：2017
- 年：2017
- 卷：17
- 期：Complete
- 页码：336-339
- 全文大小：242 K
- 卷排序：17
文摘
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.