Volume 1 – Issue 2 – 2020
Original Research Article
Geoelectrical Estimation of Depth to Fractured Shale Aquifers Within Alex Ekwueme Federal University Ndufu Alike, South Eastern Nigeria
A.C.Ekwe1, O.S.Onwuka2, G.-B.Azuoko1, O.V.Omonona1, Lemchi Chidozie1, E.E.Nkitnam2, G.C.Mbaeyi2, C.G.Okeugo2
1Department of Physics/Geology/Geophysics, Alex Ekwueme Federal University Ndufu Alike, (NIGERIA)
2Department of Geology, University of Nigeria, Nsukka, (NIGERIA)
PAGE NO: 173-182
ABSTRACT – DOI : https://dx.doi.org/10.47204/EESR.1.2.2020.173-182
The depths to the fractured Shale aquifer at various points within the study area were determined using the electrical resistivity method. Twenty (20) vertical electrical soundings (VES) in the Schlumberger configuration were acquired with ABEM SAS 1000 Terrameter with a maximum half current (AB/2) electrode spacing of 200m. We determined layer parameters using partial curve matching techniques while processing and modelling was carried out with the IPI2winTM software. The VES results were interpreted to obtain layer parameters (aquifer thickness, resistivity and depth to aquifer) for the entire area. Interpretative cross-sections taken along three profiles was used to delineate aquifer thickness and the depth to the fractured shale aquifers in the study area. Results show that aquifer thickness ranges from 5.5 m to 44.7m while depth to aquifer ranges from 10.93m to 56.9m. These findings are fundamentally very important and should be considered exploiting for water resources in the area.