Abstract
The use of resistivity sounding and two-dimensional (2-D) resistivity imaging was investigated with the aim of delineating and estimating the groundwater potential in Keffi area. Rock types identified are mainly gneisses and granites. Twenty-five resistivity soundings employing the Schlumberger electrode array were conducted across the area. Resistivity sounding data obtained were interpreted using partial curve matching approach and 1-D inversion algorithm, RESIST version 1.0. The 2-D resistivity imaging was also carried out along two traverses using dipole–dipole array, and the data obtained were subjected to finite element method modeling using DIPRO inversion algorithm to produce a two-dimensional subsurface geological model. Interpretation of results showed three to four geoelectrical layers. Layer thickness values were generally less than 2 m for collapsed zone, and ranged from 5 to 30 m for weathered bedrock (saprolite). Two major aquifer units, namely weathered bedrock (saprolite) aquifer and fractured bedrock (saprock) aquifer, have been delineated with the latter usually occurring beneath the former in most areas. Aquifer potentials in the area were estimated using simple schemes that involved the use of three geoelectrical parameters, namely: depth to fresh bedrock, weathered bedrock (saprolite) resistivity and fractured bedrock (saprock) resistivity. The assessment delineated the area into prospective high, medium and low groundwater potential zones.
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References
Adefolalu AO (2002) Climate. In: Africa Atlases; Atlas of Nigeria. Les Editions J. A. Aux E’dition du Jaguar 57 bis, rue d’Auteuil-75016 Paris-France
Aina A, Olorunfemi MO, Ojo JS (1996) An integration of aeromagnetic and electrical resistivity methods in dam site investigation. Geophysics 61:349–356
Anudu GK, Onuba LN, Ufondu LS (2011) Geoelectric sounding for groundwater exploration in the crystalline Basement Complex terrain around Onipe and adjoining areas, southwestern Nigeria. J Appl Technol in Environ Sanitation 1(4):343–354
Bala AE, Ike EC (2001) The aquifer of the crystalline basement rocks in Gusau area, northwestern Nigeria. J Min Geol 37(2):177–184
Barker RD (2007) Electrical resistivity methods for borehole siting in hardrock region. In: Thangarajan M (ed) Groundwater: resource evaluation, augmentation, contamination, restoration, modelling and management. Springer, Dordrecht, p 357
Barker R, Blunk I, Smith I (1996) Geophysical consideration in the design of UK National Resistivity Sounding Database. First Break 14(2):45–53
Batte AG, Muwanga A, Sigrist PW, Owor M (2008) Vertical electrical sounding as an exploration technique to improve on the certainty of groundwater yield in the fractured crystalline basement aquifers of eastern Uganda. Hydrogeol J 16:1683–1693
Barongo JO, Palacky GJ (1991) Investigation of electrical properties of weathered layers in the Yala area, western Kenya, using resistivity soundings. Geophysics 56(1):133–138
Bernard J (2003) Short note on depth of investigation of electrical methods. www.iris-instruments.com. Accessed 27 July 2006
Dan-Hassan MA, Olorunfemi MO (1999) Hydrogeophysical investigation of a basement terrain in the north-central part of Kaduna State Nigeria. J Min Geol 35(2):189–205
David LM (1988) Geoelectric study of shallow hydrogeological parameters in the area around Idere. University of Ibadan, Nigeria
Ernstson K, Kirsch R (2006) Geoelectrical methods in groundwater geophysics—a tool for hydrogeology. Springer, Berlin, pp 85–118
Gowd SS (2004) Electrical resistivity surveys to delineate groundwater potential aquifers in Peddavanka watershed, Anantapur District, Andhra Pradesh, India. Environ Geol 46:118–131
Hazell JRT, Cratchley CR, Jones CRC (1992) The hydrogeology of crystalline aquifers in northern Nigeria and geophysical techniques used in their exploration. In: Wright EP, Burgess WG (eds) The hydrogeology of crystalline basement aquifers in Africa. Geological Society, London, pp 155–182, Special Publication
Jatau BS, Bajeh I (2007) Hydrogeological appraisal of parts of Jemaa local government area north-central Kaduna State Nigeria. Res J of Appl Sci 2(11):1174–1181
Keller GV, Frischnecht FC (1966) Electrical methods in geophysical prospecting. Pergamon Press, Oxford, p 523
KIGAM (2001) DIPRO for Windows version 4.01. Processing and interpretation software for electrical resistivity data. KIGAM, Daejeon
Menke W (1984) Geophysical data analysis: discrete inverse theory. Academic, Orlando
Offodile ME (1983) The occurrence and exploitation of groundwater in Nigerian basement rocks. Niger J Min Geol 20(1 & 2):131–146
Olayinka AI (1996) Non-uniqueness in the interpretation of bedrock resistivity from sounding curves and its hydrogeological implications. Water Resour 7(1 & 2):49–55
Olayinka AI, Abimbola AF, Isibor RA, Rafiu AR (1999) A geoelectrical-hydrogeochemical investigation of shallow groundwater occurrence in Ibadan. Environ Geol 37(1 & 2):31–39
Olayinka AI, Akpan EJ, Magbagbeola OA (1997) Geoelectric sounding for estimating aquifer potential in the crystalline basement area around Shaki. Water Resour 8(1 & 2):71–81
Olayinka AI, Obere FO, David LM (2000) Estimation of longitudinal resistivity from Schlumberger sounding curves. J Min Geol 36(2):225–242
Olayinka AI, Olorunfemi MO (1992) Determination of geoelectrical characteristics in Okene area and implication for borehole siting. J Min Geol 28:403–412
Olorode O (2002) Vegetation and fauna. In: Africa Atlases; Atlas of Nigeria. Les Editions J. A. Aux E’dition du Jaguar 57 bis, rue d’Auteuil-75016 Paris-France
Olorunfemi MO, Fasuyi SA (1993) Aquifer types and the geoelectric/hydrogeologic characteristics of part of the central basement terrain of Nigeria (Niger State). J Afr Earth Sci 16(3):309–31
Roy A, Apparao A (1971) Depth of investigation in direct current methods. Geophysics 36(5):943–959
Seidel K, Lange G (2007) Direct current resistivity method. In: Knodel K, Lange G, Voigt HJ (eds) Environmental geology: handbook of field methods and case studies. Springer, Berlin, p 1339
Taylor G, Eggleton RA (2001) Regolith geology and geomorphology. Wiley, Chichester, p 379
Telford WM, Geldart LP, Sheriff RE (1998) Applied geophysics, 2nd edn. Cambridge, UK, p 770
Singhal BBS, Gupta RP (2010) Applied hydrogeology of fractured rocks, 2nd edn. Springer, Netherlands, p 401
Vander Velpen BPA (1988) RESIST version 1.0, MSc Research Project. ITC, Delft
Ward SH (1990) Resistivity and induced polarisation methods. In: Geotechnical and Environmental Geophysics, SH Ward (ed). Investigations in geophysics No. 5, Volume 1: Review and tutorial, Society of Exploration Geophysics, Tulsa, Oklahoma, pp. 147–189
White CC, Houston JFT, Barker RD (1988) The Victoria Province drought relief project 1. Geophysical siting of boreholes. Groundw 26:309–316
Wright EP (1992) The hydrogeology of crystalline basement aquifers in Africa. Geol Soc London, Spec Publ 66:1–27
Yi MJ, Kim JH, Chung SH (2003) Enhancing the resolving power of the least-squares inversion with active constraint balancing. Geophysics 68:931–941
Zohdy AAR, Eaton GP, Mabey DR (1974) Application of surface geophysics to groundwater investigations. US Geological Survey, Reston, USGS-TWRI, Book 2, Chapter D1
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The authors are grateful to the anonymous reviewers for their useful suggestions and constructive criticism which have greatly improved the revised manuscript.
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Anudu, G.K., Essien, B.I. & Obrike, S.E. Hydrogeophysical investigation and estimation of groundwater potentials of the Lower Palaeozoic to Precambrian crystalline basement rocks in Keffi area, north-central Nigeria, using resistivity methods. Arab J Geosci 7, 311–322 (2014). https://doi.org/10.1007/s12517-012-0789-x
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DOI: https://doi.org/10.1007/s12517-012-0789-x