Contribution to the Hydrochemical Study of Groundwater from the Continental Terminal in Saloum

Metallogeny and Emplacement Conditions of Continental Terminal 3 (Ct<sup>3</sup>) Iron Formations of the Niamey Region (Western Niger)

“…In West Africa and other parts of Africa, the Continental terminal formation is the main source of water for millions of people [17] [18] [19]. Finally, in the current context of climate change and urbanization linked to economic progress, largely resulting from strong anthropogenic pressures [20], understanding the origins and mineralization processes of Ct groundwater resources is at the heart of sub-regional concerns [21] [22]. Based on this observation, the objective of this work is to specify the sedimentation conditions of the iron, and to contribute to the understanding of the links between geology and the different groundwater aquifers present in the study area.…”

“…Fed by rainwater percolation [20], the increased use of the groundwater table of the Continental terminal could constitute a significant health risk for a majority of the inhabitants of Niamey. Compared to other groundwater reserves of African cities, the geochemical characters (major and traces) of the Ct 3 in the Niamey region indicate that the potential contamination of these aquifers could be related to the land use land cover (LULC) change over time [21], in addition to the context of the formation of current aquifers and processes that can cause its natural composition to vary [22].…”