Hydrochemical constraints between the karst Tabular Middle Atlas Causses and the SaÃ¯s basin (Morocco): implications of groundwater circulation
- Permanent Link:
- Hydrochemical constraints between the karst Tabular Middle Atlas Causses and the Saïs basin (Morocco): implications of groundwater circulation
- Series Title:
- Hydrogeology Journal
- Miche, Hélène
- Publication Date:
- Subjects / Keywords:
- Morocco ( local )
Hydrochemistry ( local )
Isotopic Analyses ( local )
Conceptual Models ( local )
Groundwater Flow ( local )
- serial ( sobekcm )
- The karst Tabular Middle Atlas Causses reservoir is the main drinking-water supply of Fez-Meknes region (Saïs Basin) in Morocco. Recent analyses showed a decline in associated groundwater chemical quality and increased turbidity. To understand this hydrosystem, four surveys were undertaken during fall and spring, 2009â€“2011. Hydrogeochemical studies coupled with isotopic analyses (Î´18O, Î´D and 222Rn) showed that the aquifers between the causses (mountains) and the Saïs Basin are of Liassic origin and at the southern extremities are of Triassic origin. Five recharge zones of different altitudes have been defined, including two main mixing zones in the south. Deuterium excess results suggest local recharge, while a plot of Î´18O versus Î´D characterizes a confined aquifer in the eastern sector. 222Rn results reveal areas of rapid exchanges with an upwelling time of less than 2 weeks. A schematic conceptual model is presented to explain the groundwater circulation system and the behavior of this karst system.
- Original Version:
- Hydrogeology Journal, Vol. 26, no. 1 (2017-11-13).
- Source Institution:
- University of South Florida Library
- Holding Location:
- University of South Florida
- Rights Management:
- This object is protected by copyright, and is made available here for research and educational purposes. Permission to reuse, publish, or reproduce the object beyond the bounds of Fair Use or other exemptions to copyright law must be obtained from the copyright holder.
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