Hydrogeology and water chemistry of boreholes identified at the Hamadien continental / intercalary in the Zinder region in Niger

摘要

This work deals with the hydrogeology and water chemistry of the boreholes found in the aquifer of the Continental Intercalary in Zinder region, Republic of Niger. To do this, sixteen (16) sampling points, identified by GPS coordinates, were sampled during the year 2015, with a total of sixty four (64) samples analyzed. The characteristics of these waters were established on the basis of the Sch-eller Berkaloff scheme. These waters present four types of facies, including chloride-type facies, which are present on 18.75% of the boreholes, with calcium and potassium sodic poles, and bicarbonate facies, which are observed on 81.25% of the boreholes with potassium and calcium sodium poles. All the drillings studied capture the aquifer of the Hamadien /Continental Intercalary.