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Characterization of the Cretaceous aquifer structure of the Meskala region of the Essaouira Basin, Morocco

January 1, 2011

The aquifer of early Cretaceous age in the Meskala region of the Essaouira Basin is defined by interpretation of geological drilling data of oil and hydrogeological wells, field measurement and analysis of in situ fracture orientations, and the application of a morphostructural method to identify lineaments. These analyzes are used to develop a stratigraphic–structural model of the aquifer delimited by fault zones of two principal orientations: NNE and WNW. These fault zones define fault blocks that range in area from 4 to 150 km2. These blocks correspond either to elevated zones (horsts) or depressed zones (grabens). This structural setting with faults blocks of Meskala region is in accordance with the structure of the whole Essaouira Basin. Fault zones disrupt the continuity of the aquifer throughout the study area, create recharge and discharge zones, and create dip to the units from approximately 10° to near vertical in various orientations. Fracture measurements and morphometric-lineament analyzes help to identify unmapped faults, and represent features important to groundwater hydraulics and water quality within fault blocks. The above geologic features will enable a better understanding of the behaviour and hydro-geo-chemical and hydrodynamics of groundwater in the Meskala aquifer.

Citation Information

Publication Year 2011
Title Characterization of the Cretaceous aquifer structure of the Meskala region of the Essaouira Basin, Morocco
DOI 10.1016/j.jafrearsci.2010.12.003
Authors L. Hanich, L. Zouhri, J. Dinger
Publication Type Article
Publication Subtype Journal Article
Series Title Journal of African Earth Sciences
Series Number
Index ID 70035892
Record Source USGS Publications Warehouse
USGS Organization