ABSTRACT

2-Dimensional Electrical Resistivity Imaging survey of ten profiles each of length 200m was carried out to determine the quantity of clay deposited in UBTH region, Ugbowo zone, Benin City, Edo State. Wenner Array, as well as Dipole-Dipole Array were used for the field data collection using ABEM Terrameter SAS 300C Resistivity Meter.  The field data were processed using DIPRO 4.0 Inversion Software to obtain 2-Dimensional apparent resistivity of the subsurface. Geological interpretation of the resistivity images shows that clay existed in traverse-1 and traverse-2.

 This study reveals that at a depth of about 0-10m for traverse-1 and 0-5m for traverse-2, we find clay within the study area. The clay at a depth of about 5m for transverse-1 is intercalated with wet sands at different horizons, implying that clay has a suitable thickness and quantity. While for traverse-2, the clay sand extended to about 43m laterally and thinned out.  For transverse-2 to the quantity of the clay is smaller, as well as the thickness when compared to traverse-1; meaning traverse-1 has a higher quantity of clay when compared to traverse-2.