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Comptes Rendus Géoscience
Volume 338, n° 10
pages 703-710 (août 2006)
Doi : 10.1016/j.crte.2006.04.018
Received : 2 September 2005 ;  accepted : 25 April 2006
Origine des eaux des émergences karstiques chlorurées du Languedoc-Roussillon
Origin of the Languedoc-Roussillonʼs chloride rich karstic spring waters
 

Olivier Hébrard , Séverin Pistre , Nicolas Cheynet, Jean Dazy, Christelle Batiot-Guilhe , Jean-Luc Seidel
Laboratoire HydroSciences, université Montpellier-2, place Eugène-Bataillon, CC MSE, 34095 Montpellier cedex 5, France 

Auteur correspondant.
Résumé

Lʼorigine des eaux dʼémergences représentatives des émergences karstiques chlorurées du Languedoc-Roussillon a été recherchée par une approche hydrochimique. Pour cela, les éléments majeurs et traces les plus couramment utilisés dans lʼétude des environnements salins ont été considérés (Cl, SO4 , Br, B, Li). Cette étude a permis de dissocier les pôles multiples de ces eaux (évaporitique, marin, géothermal), en partie grâce au rapport Li/SO4 qui, associé à Cl, Br et B, sʼest révélé être un traceur pertinent de lʼorigine du lithium, et donc des eaux. Pour citer cet article : O. Hébrard et al., C. R. Geoscience 338 (2006).

The full text of this article is available in PDF format.
Abstract

The origin of chloride-rich karstic spring waters representative of the Languedoc-Roussillon region has been investigated with a hydrochemical approach. To this end, the major and trace elements most often used in the study of saline environments have been considered (Cl, SO4 , Br, B, Li). This study allowed distinguishing the different end-members of the various chloride-rich karstic spring waters (evaporitic, marine, geothermal). Associated with the Cl, Br and B contents, the Li/SO4 ratio appeared as a relevant tracer for the determination of the origin of lithium and by extension of the considered waters. To cite this article: O. Hébrard et al., C. R. Geoscience 338 (2006).

The full text of this article is available in PDF format.

Mots-clés : Emergences karstiques, Salinité, Chlorures, Hydrochimie, Traceurs naturels, Bassin méditerranéen, France

Keywords : Karstic springs, Salinity, Chlorides, Hydrochemistry, Natural tracers, Mediterranean basin, France




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