[01] Adeeko Tajudeen Olugbenga, Department of Physics, Faculty of Science, University of Abuja, Abuja, Nigeria. [02] Ojo Emmanuel Osiewundo, Science Infrastructure Department, National Agency for Science and Engineering Infrastructure, Abuja, Nigeria.

The electrical resistivity investigation of Zuba and Tungamaje area, of Gwagwalada Area Council, Abuja, was carried out with a view to providing geology and geophysical information on the different sub-surface layers, depth, thickness, and distribution of the fractured basement as potential sources of groundwater. The basement rocks consist of a migmatite-gneisses, granite gneiss, and granite. The granite occurs in several locations of the study area. Twelve vertical electrical sounding stations were established utilizing the Schlumberger electrode configuration. The electrical resistivity data obtained where interpreted using IPI2win software. The results obtained from the analysis of the geophysical data showed that the study area is underlined by three geo-electrical layers. These layers are the topsoil, weathered layers, and fractured basement. The top soil layer of thickness and resistivity values ranging from 1.31-2.16m and 236-990 ohms meters, weathered layer ranging from 1.22-5.19m and 33.8-213 ohms meters and the fractured basement ranging from infinity in thickness and 397-966 ohms meters. Also, the study area lacks sufficient fractures and the thickness of the overburden was also thin for groundwater exploration activities.

Gwagwalada, Granite Gneiss, lithology, potential, Schlumberger, Tungamaje, Zuba

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