ABSTRACT
This Project report presents the results of a 2-D resistivity survey aimed at characterizing the thickness of subsurface clay distribution in the University of Benin.
During data acquisition various instruments were used on the field such as the ABEM terrameter SAS 300C used to take readings, measuring tape to mark out the transverse line, hammer to place the electrodes and the GPS to obtain the coordinates of the transverses.
The Dipole-Dipole and Wenner electrode configuration was chosen to provide data regarding the variation in subsurface resistivity and the data obtained was processed and interpreted using the inversion software (DIPPRO).
Two distinct transverse sections, Transverse-1 and Transverse-2, were investigated using this geophysical method. In Transverse-1, the survey revealed a consistent thickness of clay ranging from 5 to 10 meters beneath the surface. Conversely, in Transverse-2, the thickness of clay within a distance of 0 to 40 meters from the survey origin was found to be less than 5 meters. These findings provide essential insights into the spatial variability of clay deposits within the study area, which can have significant implications for geotechnical and environmental assessments, as well as land use planning and resource management.
