APPLICATION OF 2-DIMENSIONAL TOMOGRAPHY TO INVESTIGATE SUBSURFACE LITHOLOGY IN AUCHI POLYTECHNIC, AUCHI, EDO STATE, NIGERIA.

The Wenner - Schlumberger array was used for Constant Separation Traversing (CST) to investigate subsurface lithology in Auchi Polytechnic, Auchi. All the traverses were carried out with electrode spacing of 5 m with a spread of 200 m. The data was obtained using Pasi terrameter (16-GL) and processed with the Dipro software. The subsurface resistivity values ranged from 207 Om - 8357 Om. The results obtained from this survey classified the subsurface lithology into topsoil, clayey sand, sandy clay and sand. The maximum depth penetrated was 50 m. [ABSTRACT FROM AUTHOR]