Geology, geography and global energy

Scientific and Technical Journal

Formation of fresh underground waters resources of the Central Sahara

2018. №3, pp. 18-30

Anisimov L.A. - D.Sc. in Geology and Mineralogy, Professor, Volgograd State Technical University, 1 Akademicheskaya st., Volgograd, 400074, Russian Federation,

Choubin M.A. - D.Sc. in Geology and Mineralogy, Professor, Volgograd State University, 100 Universitetskiy av., Volgograd, 400062, Russian Federation,

The study of the formation of the chemical composition of groundwater in the Central Sahara and the assessment of their resources are carried out on the example of the analysis of hydrogeological conditions of the Hoggar crystalline massif and adjacent sedimentation basins. Data on mineralization and chemical composition of subsurface waters in sedimentary rocks in the basins adjacent to Hoggar show, basically, their identity with the waters of the crystalline massif. Most researchers is explained the low groundwater salinity by favorable conditions for infiltration into aquifers in Pleistocene, given the stormy nature of precipitation and good vertical permeability of the geological section. At the same time, to explain the wide spread of fresh water, it is necessary to involve data on the glaciation of the African continent in Paleozoic.

Key words: Центральная Сахара, кристаллические массивы, подземные воды, ресурсы, палеозойское оледенение, Central Sahara, crystalline massifs, underground water, resources, Paleozoic glaciation