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Hydrogeology Journal

Erschienen in:

01.03.2011 | Report

Hydrologic and geologic factors controlling groundwater geochemistry in the Turonian aquifer (southern Tunisia)

verfasst von: Kamel Abid, Kamel Zouari, Marek Dulinski, Najiba Chkir, Brahim Abidi

Erschienen in: Hydrogeology Journal | Ausgabe 2/2011

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Abstract

Water in the fissured limestone and dolomite of the Turonian aquifer of Tunisia has been investigated using geochemical (major ions) and isotopic (δ¹⁸O, δ²H, ¹⁴C) data. To carry out a characterization of aquifer behaviour, 48 representative samples were collected at the end of the humid season. The evolution of chemical composition of groundwater from recharge areas to discharge areas is characterized by increasing sodium, chloride and sulphate contents as a result of leaching of evaporite rock. In the study, three distinct chemical trends in groundwater were identified. The major reactions responsible for the chemical evolution of groundwater in the investigated area fall into three categories: (1) calcite precipitation, (2) gypsum and halite dissolution, and (3) ion exchange. The stable isotope composition of water samples indicates large-scale interaction between the Continental Intercalaire and the Turonian aquifer and the presence of a young local component which probably enters the system via faults and/or fractures.

Vorheriger Artikel Submarine and coastal karstic groundwater discharges along the southwestern Mediterranean coast of Turkey

Nächster Artikel Isotopes (δD and δ18O) in precipitation, groundwater and surface water in the Ordos Plateau, China: implications with respect to groundwater recharge and circulation

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Titel: Hydrologic and geologic factors controlling groundwater geochemistry in the Turonian aquifer (southern Tunisia)
verfasst von: Kamel Abid
Kamel Zouari
Marek Dulinski
Najiba Chkir
Brahim Abidi
Publikationsdatum: 01.03.2011
Verlag: Springer-Verlag
Erschienen in: Hydrogeology Journal / Ausgabe 2/2011
Print ISSN: 1431-2174
Elektronische ISSN: 1435-0157
DOI: https://doi.org/10.1007/s10040-010-0668-z

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