Journal of Geological Society of India (Online archive from Vol 1 to Vol 78)

E. A. Ojelabi ¹, B. S. Badmus ², A. A. Salau ²

Affiliations
1 Geophysics Research Group, Department of Physics, University of Lagos, Lagos, NG
2 Department of Physical Sciences, University of Agriculture, Abeokuta, Ogun State, NG

Abstract

The accuracy of two common electrode arrays - the Wenner and Schlumberger - used in the geoelectric resistivity method for groundwater exploration has been investigated within a typical area of basement complex. The results of the comparative study show that Schlumberger electrode array has a high investigating depth per unit current electrode separation and is more suitable for subsurface delineation and groundwater exploration. The studies have indicated an average depth to basement of 9.75 m, and six geoelectric formations viz Lateritic top-soil, Clay, Clayey sand, Weathered basement, Fractured basement and Fresh basement.

Keywords

Geoelectric Sounding, Wenner and Sclumberger Methods, Groundwater Exploration, Southwestern Nigeria.

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