Evolution and Mineralization of Water Chemistry in the Aquifer systems of the Terminal Complex of the Wadi Righ Valley

Abstract Groundwater resources in the Wadi Righ valley are represents an important part into the eastern basin of the Algerian Sahara. It characterized by a superposed of two main major aquifers: the former represented by the Intercalary Continental (IC) and the latter by Terminal Complex (TC). This study is focused on the quality aspects of water hosted into Terminal Complex which chow a multi-layers lithology. From a qualitative point of view, various studies have highlighted indicates that the waters in this region showed displays an excessive mineralization, including the waters of the Terminal Complex (EC= 5854.61 S / cm). The application of geochemical methods on applied to the analytical data obtained from wells in the region where the appurtenance of water car reach different layers of the water system of multi-layered aquifer waters of Terminal Complex of the Wadi Righ valley. Therefore, the linear correlations between the chemical elements were composition calculated and it indicates water composition which reflects the water and the lithological nature of different layers of the aquifer. It highlights also the connection between different formation, and predicts possible connection of water between three levels groundwater's in these's layers on one hand and it indicates the mineralization origin of water that represented by the influence highly influenced by various lithological formations. The results show that the mineralization of water is from geological origin. It concerns the composition of the layers that make up the Terminal Complex.