Geoelectrical Assessment of Groundwater Potential at Ewuloja and its Environs in Simawa Area, Southwestern Nigeria
| Autor: | L. Adeoti, T.A. Oyeniran, R. B. Adegbola, M.A. Ayuk, A Iya |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
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Topsoil
geography geography.geographical_feature_category aquifer Vertical electrical sounding lcsh:T Mechanical Engineering lcsh:QC801-809 Borehole Curve matching Sampling (statistics) Aquifer lcsh:Technology Vertical electrical sounding aquifer consolidated sandstone earth resistivity lateritic clay lcsh:Geophysics. Cosmic physics consolidated sandstone Potential assessment Electrical and Electronic Engineering Petrology Engineering (miscellaneous) earth resistivity Geology Groundwater Civil and Structural Engineering |
| Zdroj: | Nigerian Journal of Technological Development, Vol 15, Iss 2, Pp 39-49 (2018) Nigerian Journal of Technological Development; Vol 15, No 2 (2018); 39-49 |
| ISSN: | 2437-2110 0189-9546 |
| Popis: | Groundwater potential assessment using the vertical electrical sounding (VES) technique was carried out at at Ewuloja and its environs in Simawa Southwestern, Nigeria with a view to solving the problem of incessant failure of groundwater boreholes in the study area. A total of 40 VES were carried-out using Schlumberger electrode configuration. The data was interpreted quantitatively using the partial curve matching and computer iteration techniques to generate the first order geoelectric parameters. The borehole lithological log was used to constrain the conventional VES interpretation. The VES results aided by the borehole lithological log reveal four to seven distinct subsurface geologic layers which correspond to Top soil, Lateritic clayey sand, Sand, Sandstone and Consolidated sandstone. The analysis shows that sands at the upper layer within the depth of 2.3 - 76.2 m are unsaturated while sands at depth not less than 100 m in some sampling points are saturated and denote the aquifer units in the study area. Boreholes/deep wells could be cited at these points at depth interval 150 - 210 m. This study has provided an insight to the subsurface condition of the aquifer systems and delineated areas for probable groundwater development in Simawa community. Keywords: Vertical electrical sounding, aquifer, consolidated sandstone, earth resistivity, lateritic clay |
| Databáze: | OpenAIRE |
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