The resulting curves were analyzed and interpreted qualitatively by inspection and quantitatively by “partial curve matching” [8] which required matching small segments of the field curves with an appropriate two-layer model resistivity-depth variation curve and its corresponding auxiliary curve to obtain the apparent resistivity and thickness of the first layer as well as the assumed resistivities and depth replacements of the other layers and the respective reflection coefficient „k” and Depth Index (DI) between two successive layers [9].
The results from the modeling were finally iterated to the lowest Root Mean Square (RMS)
percentage error using computer software, “the Win RESIST version 1.0” based on [10] models to determine the
smoothed resistivities and thicknesses of other layers (Figs: 3-6) and (Table 1). From these, the subsurface lithology
is obtained and the geoelectric section of the study sites was drawn.