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ABSTRACT
Two profiles were considered in the study area which form the 2D Electrical Resistivity Imaging (ERI) using the Wenner array. The 2D inverted Electrical Resistivity data obtained in the study area shows various occurrences of minerals.
It is evident from the result of the modelled 2D images that the Lithology of the area is seen to have some buried rocks materials and minerals over a depth between 2.5 m to 57.3 m for both profile lines which reveals the composition of Alluvium and clayey soil at the top surface with low resistivity values at a depth below 10 m, while Shale, Slate, Sandstone falls at a depth between 13 m to 25 m and below a depth of 50 m, marble a can be inferred. It is evident from all the profiled lines that the mineral occurrences are related to the lithological formation of the study area which is predominated by clayey soil.
Although the standard resistivity value shows an occurrence of hard rock (Igneous and metamorphic rock), with range of 30m to 56m below however, the lithological profile of the existing borehole data obtained of the study area shows that the formations from 0m-70m are sedimentary beds of sandstone, clay and clayey soil. Therefore, the high resistivity value is occasion by the presence of stratified sand stone and thick clay layers encountered about 30m as shown in the litholog.
