Journal of Geology & Geophysics
Open Access

Laboratory of Applied Hydrology (LAH), National Water Institute (NWI), University of Abomey-Calavi, Benin

Publications

• Research Article   
  Geophysical Geometry of Fracture Zones in the Basement Rocks of the Donga Department Northwest of Benin
  Author(s): Yalo N*, Akokponhoué BH, Akokponhoué NY, Alassane A, Marc YT, Hounton C and Suanon F
  
  The Donga Department is located in the northwest of Benin in an area made up of crystalline and crystallophyllic basement rocks where most of the groundwater resources are found in the area of weathered and conductive fractures. The carrying out of drilling campaigns in this department are often crowned with a significant number of negative boreholes (<0.7 m3 /h) due to the poor choice of sites for drilling. The objective of this study is to use geophysical methods to identify and characterize the fractured basement areas, with a view to improving the implantations and the sustainable management of the aquifers they contain. The Electric Resistivity Tomography method was used to characterize the geometry of the fracture zones and the thickness of the weathered zone. The results showed that in the department of Donga, the thickness of the weathered zone is between 5 and 35 m and the.. View More»
  

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