Dipole-Dipole Resistivity Measurements of Weathered Soils Over Major Rock Types in a Humid Climate - A Case Study of Ashanti Region-Ghana

Abstract

Ninety six (96) dipole-dipole resistivity sounding curves acquired with Mac-Ohm II resistivity meter over the Birimian, Intrusives, Tarkwaian and Voltaian rocks underlying Ashanti Region have been analyzed qualitatively to identify their characteristic shapes over each rock type. Geoelectrical sections have also been modeled from the curves and drill logs obtained close to the sounding points. Four (4) major three (3)-geoelectrical sections were identified. These were characterized by the H, A, Q and K- type curves which corresponded to the resistivity sequence r1>r2