Groundwater potential assessment in a sedimentary terrain, southwestern Nigeria
- 129 Downloads
Geoelectrical resistivity techniques are increasingly being applied in addressing a wide range of hydrological, environmental, and geotechnical problems. This is due to their effectiveness in near-surface characterization. In the present study, a suite of vertical electrical soundings (VESs) was integrated with 2D geoelectrical resistivity and time-domain induced polarization (IP) imaging to characterize the near-surface and delineate the underlying aquifer in a sedimentary terrain. The geophysical survey was conducted as part of preliminary studies to evaluate the potential of groundwater resource in Iyana-Iyesi and Canaan Land area of Ota, southwestern Nigeria. A high-yield confined sandy aquifer overlain by a low-yield aquitard was delineated; overlying the aquitard is a very resistive and thick layer that is predominantly composed of kaolinitic swelling clay intercalated with phosphate mineral.
KeywordsGroundwater investigation Resistivity and IP imaging Near-surface geophysics Subsurface characterization
The authors wish to thank Covenant University Management for providing the resources to conduct this study. Our profound appreciation goes to following undergraduate students who helped with the field data collection: Nelson-Atuonwu Cherish, Liadi Esther, Shotuyo Yewade, Lesinwa Fortune, Ijioma Nanna, Utor Joy, Tucker Miata, Uye Perpetual, and Ukabam Chukwuemeka.
- Aizebeokhai AP, Alile OM, Kayode JS, Okonkwo FC (2010a) Geophysical investigation of some flood prone areas in Ota, southwestern Nigeria. Am-Eurasian J Sci Res 5(4):216–229Google Scholar
- Aizebeokhai AP, Oyebanjo OA (2013) Application of vertical electrical soundings to characterize aquifer potential in Ota, Southwestern Nigeria. Int J Phys Sci 8(46):2077–2085Google Scholar
- Billman HG (1992) Offshore stratigraphy and paleontology of Dahomey (Benin) embayment. NAPE Bull 70(2):121–130Google Scholar
- Dahlin T, Bernstone C, Loke MH (2002) A 3D resistivity investigation of a contaminated site at lernacken in Sweden. Geophysics 60(6):1682–1690Google Scholar
- Gebhardt H, Adekeye OA, Akande SO (2010) Late Paleocene to initial Eocene thermal maximum foraminifera biostratigarphy and paleoecology of the Dahomey Basin, southwestern Nigeria. Gjahrbuch Der Geologischem Bundesantalt 150:407–419Google Scholar
- Obaje NG (2009) Geology and mineral resources of Nigeria. In: Brooklyn SB, Bonn HJN, Gottingen JR, Graz KS, (ed), Lecture Notes in Earth Sciences, Springer, 120:22Google Scholar
- Ogbe FAG (1970) Stratigraphy of strata exposed in the Ewekoro quary, western Nigeria. In: Dessauvagie TFJ, Whiteman AJ (eds) African geology. University of Ibadan Press, Nigeria, pp. 305–324Google Scholar
- Omatsola ME, Adegoke OS (1981) Tectonic evolution and cretaceous stratigraphy of the Dahomey Basin. Nigerian J Min Geol 18(1):130–137Google Scholar
- Rubin Y, Hubbard S (2005) Hydrogeophysics, water science and technology library 50. Springer, Berlin, p. 523Google Scholar
- Vereecken H, Binley A, Cassiani G, Kharkhordin I, Revil A, Titov K (eds) (2006) Applied Hydrogeophysics, Springer-Verlag, Berlin, 372Google Scholar