Contribution to the hydrochemical study of springs Jurassic of the Ziz high basin: Contribution of remote sensing

This work aims the evaluation of the physico-chemical quality of the Jurassic springs of the High Ziz basin and determination of the sources of pollution a view to map the quality of Jurassic layers. And determine their relationships with geolgic fractures. In this study, five springs were sampled during the month frome March to september 2014. September chemical elements were analyzed by ion chromatography: Chlorides, nitrates, sulfates, Sodium, Potassium, Calcium and Magnesium. To study and compare the spatial distribution of results, thematic maps were developed using a Geographic Information System (GIS). the use of remote sensing data together with image processing techniques and GIS aims to: 1) map fracturing Ziz high basin, 2) analyze their relationship with fracturing, 3) guiding the hydrogeological prospecting in the area. Analysis of the overall water quality revealed that the controlled items are average to very poor. These waters belong to three chemical facies:chlorinated- sulfated, calcic and magnesium facies, a calcium andmagnesium and bicarbonate facies and a chlorinated sodic and potassium facies. The degradation of water quality in the Jurassic aquifer of the high basin of Ziz could have geological and anthropogenic origins. The sources are related to the tectonic nodes at intersection of faultes.