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Journal of Applied Sciences and Environmental Management
World Bank assisted National Agricultural Research Project (NARP) - University of Port Harcourt
ISSN: 1119-8362
Vol. 24, No. 7, 2020, pp. 1209-1215
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Bioline Code: ja20176
Full paper language: English
Document type: Research Article
Document available free of charge
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Journal of Applied Sciences and Environmental Management, Vol. 24, No. 7, 2020, pp. 1209-1215
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Delineation of Near-Surface Structural Features Suitable for Groundwater Accommodation Using 1-D and 2-D Resistivity Methods in Igarra, Akoko-Edo, Southwestern Nigeria
SALAMI, AS & BABAFEMI, EM
Abstract
Electrical resistivity methods using dipole-dipole and Schlumberger configurations of Vertical
Electrical Sounding (VES) were carried out to evaluate the near-surface structural and lithological features suitable
for groundwater development in parts of Igarra, Southwestern Nigeria. Two profiles with lengths of greater than
350m were carried out. A total of fifteen sounding locations along the profile lines were occupied. Dipole-dipole
data were interpreted using DiprofWin software while interpretation of the VES data followed two stages of
qualitative and quantitative data interpretation using Resist software. Dipole-dipole interpretation results indicate
the occurrence of local fractures while VES interpretation results reveal the typical basement rock profile ranging
from topsoil, lateritic sand, weathered front, fractured to fresh basement. The significant variations in terms of
persistence and thicknesses of these basement vertical rock profiles were revealed by the geoelectrical correlation
panels, which indicate typical basement inhomogeneities over short distances. The local structural domains, the
weathered front (where thick) and the fractured basement are demonstrably potential sources of groundwater, at least
for domestic and small scale enterprises in this part of Igarra.
Keywords
2-D Pseudosection; Dipole-dipole; Fracture Basement; Vertical Electrical Sounding
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© Copyright 2020 - Salami and Babafemi.
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