Geophysical Study of Parts of Oru Area Imo State Nigeria Using Electrical Resistivity Method

Abstract

Electrical resistivity method has been used in this research work to map the geological features in the Oru Area.Ten vertical electrical soundings were carried out within the study area. An Abem SAS 3000 terrameter and electrodes were used to acquire the resistivity data while a GPS system was used to obtain the co-ordinates of the survey points. The resistivity data was processed using IP2win software while surfer II was used to produce contours of the resistivity data at various depths. Field mapping shows that the northern part of the study area rests on Ogwashi-Asaba formation. The area has mudstone, claystone gritty claystone, and carboniferous mudstone massive sandstone facies whereas Benin formation is found to the southwest from Mgbidi. Also found are clay deposits. There are both shallow and deep seated Aquifers in the Area.