The Use of Electrical Resistivity Tomography to Classify the Earth’s Subsurface in Ugbogiobo Community, Edo State, South-South Nigeria

Authors

  • Osariere John Airen
  • Maureen O. Ekhoragbon Department of Physics, Faculty of Physical Sciences, University of Benin, Edo State, Nigeria.

Keywords:

Profiled, clayey soil, RES2DINV, wenner alpha, traverse

Abstract

Electrical Resistivity investigations using Two-dimensional (2-D) geophysical investigation was carried out in Ugbogiobo community, Ovia North East Local Government Area of Edo State, Nigeria. This was done to have a good idea of subsurface lithology in the study area. Twenty-four (24) traverse lines were profiled in two locations using a rectangular grid format with electrode spacing of 10 m with a horizontal length of 300 m and 200 m respectively using the Wenner Alpha configuration as a survey technique. The 2-D Electrical Resistivity data was processed using RES2DINV software. From the results obtained it is evident that over a depth of between 5 m to 56 m for all the profiled lines there is composition of Alluvium and clayey soil at the top surface with low resistivity values at a depth below 10 m with resistivity values ranging between 50 Ωm–800 Ωm. While Shale, Slate and Sandstone occurred at a depth of between 13 m to 25 m with resistivity values ranging between 1000 Ωm–3000 Ωm. Above a depth of 30 m revealed limestone and thick clay with resistivity values raging between 5000 Ωm– 30000 Ωm.

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Published

2021-11-01

Issue

Section

Agricultural, Bioresources, Biomedical, Food, Environmental & Water Resources Engineering