A Dual Topographic-Petrographic Control for a 1km2 VES-IP Study Completed at the Gidan Kwano Campus Phase II Development, Federal University of Technology, Minna, Nigeria

Abstract

It is usually not the norm, so far as studies carried out in the local basement complex geology of the Minna Area is concerned, to constrain the accuracy of the interpretation of VES data-set with the corresponding topographic and petrographic map of the specific area of study. Such approach would serve as a veritable tool of quality control (QC) of the interpretation of the acquired VES data-set. The aim of this study is to implement a valid quality control scheme for an earlier dual VES-IP study. The topographic survey proceeded along transverse traverses in a west-east, eastwest zig-zag format until transverse traverse (TT) 51 was completed. The petrographic survey phase of this study was concerned with the study of the aspects of the different outcrops seen at the area of study in terms of their strike, dip, and other structural orientation. Over the 1km2 area of study of interest here, it is observed that terrain or ground elevation progressively increases from south to north. An important observation herein, too, is that elevation increases from west to east. It is understood from the petrographic map that the area of study is underlain by a continuous body of granite that is intruded by a small body of schist. Examination of the landform map of the area of study positively correlates the conclusion of aquifer prospects drawn from the earlier survey and it is strongly recommended to drill these locations for groundwater exploitation.