Hydrogeological appraisal of basement and sedimentary terrain in Ogun state using Geoelectrical methods

  • Authors

    • Aladeboyeje Adegoke Ige UDepartment of Physical Sciences, Ondo State University of Science and Technology, Okitipupa, Nigeria
    • Coker Joseph Olakunle Department of Physics, Olabisi Onabanjo University, Ago-Iwoye, Nigeria
    • Agbasi Okechukwu Ebuka Department of Physics, Michael Okpara University of Agriculture, Umudike, Nigeria
    • Inyang Namdie Joseph Department of Physics, University of Uyo, Uyo, Nigeria
    2020-07-25
    https://doi.org/10.14419/ijag.v8i1.30848
  • Groundwater Potential, Hydraulic Conductivity, Transmissivity, Longitudinal Conductance.
  • The coverage of the groundwater potential was estimated using the geometry calculator, the potential groundwater zones were validated using geophysical surveyed points of some selected locations in Abeokuta and Ewekoro. Generally, the result of the study shows that the higher the aquifer thickness and depth the better the groundwater potential. In the basement part of the study area (Abeokuta), the Northwestern region is characterized by increase in overburden thickness (28.1 m at VES-9), weathered layer resistivity (546 Ω m at VES-7) and longitudinal conductance unit (0.193 S at VES-3 and 0.218 S at VES-7), reflecting high aquifer potentials. In this regard, the Northeastern part of the study area can be categorized as good groundwater potential; moving towards the Southwestern part from the northern, groundwater potentiality changes from good to moderate while the Southwestern/ central part is categorized as area with poor groundwater potential. In the Sedimentary part of the study area (Ewekoro), the northcentral region is characterized by increase in overburden thickness (93 m at VES-10), longitudinal conductance unit (3.644 S at VES-6), reflecting high aquifer potentials. In this regard, the northcentral part of the study area can be categorized as good groundwater potential; moving towards the northeastern part of the study area, groundwater potentiality changes from good to moderate while the southwestern part is categorized as area with poor groundwater potential. The area showed very good protective capacity at VES’s 2, 3, 4, 5, 7 and 8; making 60% of the VES stations. Good protective capacity is observed at VES 1 and 6, making 15% of the VES stations in the town. The excellent protective capacity is observed at VES 9 and 10; making 15% of the study area.

     

     

     


  • References

    1. [1] Bruijnzeel, L.A. (2004). Hydrological functions of tropical forests: Not Seeing the Soil for Trees. Agriculture, ecosystems and environment. 104(1), 185-228. https://doi.org/10.1016/j.agee.2004.01.015.

      [2] Okechukwu E.A. & Sunday E.E. (2016) Hydro-Geoelectric Study of Aquifer Potential in Parts of Ikot Abasi Local Government Area, Akwa Ibom State, Using Electrical Resistivity Soundings. International Journal of Geology and Earth Sciences. 2(4): 43 – 54.

      [3] Montgomery, C. W. (1990). Physical Geology 2nd edition. Wm. C. Brown Publishers United States of America.

      [4] Badmus, B.S. & Olatinsu, O.B. (2010). Aquifer characteristics and groundwater recharge pattern in a typical basement complex, Southwestern Nigeria. African Journal of Environmental Science and Technology, 4(6), 328-342. https://doi.org/10.5897/AJEST09.214.

      [5] Ariyo, S.O. & Adeyemi, G.O. (2012). Geoelectrical characterization of aquifers in the basement complex/sedimentary transition zone, southwestern. Nigerian. International Journal of Geology and Mining Research, 3(3), 54-62.

      [6] Odunaike, R.K., Akinyemi, L.P., Oyekunle, A. & Ijeoma,G.C. (2013). Application of Vertical Electrical Method in Groundwater Exploration at Remo North Local Government in Ogun State of Nigeria. Journal of Emerging Trends in Engineering and Applied Sciences (JETEAS), 4(4), 672-678.

      [7] Salami, B.M. & Olorunfemi, M.O. (2014). Hydrogeophysical evaluation of the groundwater potential of the central part of Ogun state, Nigeria. Ife journal of science advanced scientific research and technology.

      [8] Coker, J.O. Makinde V., & Olowofela J.A. (2016) Geophysical Investigation of Groundwater potentials of Oke-Badan Estate, Ibadan, Southwestern Nigeria. Nigerian Institute of Physics Journal 26, 124-134.

      [9] Fashae, A., Moshood, N., Talabi, A.O. & Adedeji O.I. (2014). Delineation of groundwater potential zones in the crystalline basement terrain of southwest Nigeria: An integrated GIS and Remote Sensing approach. Appl Water Sci. 14, 19-38. https://doi.org/10.1007/s13201-013-0127-9.

      [10] Rahaman, M.A. (1976). A Review of the Basement Geology of South Western Nigeria. In: Geology of Nigeria, Kogbe, C.A. (Ed.). Elizabethan Publishing, Surulere, Lagos State, Nigeria, 41-58.

      [11] Jones, H.A. & Hockey, R.D. (1964). The geology of parts of south western Nigeria. Bull. Geological Survey Nigeria, 31, 101.

      [12] Obaje, N.G., (2009). Geology and Mineral Resources of Nigeria. Springer, Berlin, Germany, 221pp. https://doi.org/10.1007/978-3-540-92685-6.

      [13] Adegoke, O.S., Ogbe, F.G.A. & Jan Du Chene, R.E. (1976). Excursion to the Ewekoro quarry (Paleocene-Eocene). Geol. Guide Nigerian Cretaceous-Recent Loc. 1-17.

      [14] Thomas A.H., Fidelis A.U. & Okechukwu E.A. (2018). Hydraulic and Geoelectric relationships of Aquifers Using Vertical Electrical Sounding (VES) in parts of Obudu, Southern Nigeria. World Scientific News. 94(2) 261 – 275.

      [15] Okechukwu E.A., Nadia A.A., Zaidoon T.A., & Sunday E.E. (2019). Integrated geophysical data and GIS technique to forecast the potential groundwater locations in part of South Eastern Nigeria. Iraqi Journal of Science. 60(5) 1013 – 1022.

      [16] Coker, J.O., Makinde, V., Adesodun, J.K. & Mustapha, A.O. (2013). Integration of Geophysical and Geotechnical Investigation for a proposed New Lecture Theatre at Federal University of Agriculture, Abeokuta, South Western Nigeria. International Journal of Emerging Trends in Engineering and Development. 5: 338-348.

      [17] Olayinka, A.I., Amidu, S.A. & Oladunjoye, M.A. (2004). Use of electromagnetic profiling and sounding for groundwater exploration in the crystalline basement of Igbeti, Southwestern Nigeria. Global Journal of Geological Science, 2(2) 243-253. https://doi.org/10.4314/gjgs.v2i2.18701.

      [18] Sharma, S.P. & Baranwal, V.C. (2005). Delineation of groundwater-bearing fracture zones in a hard rock area integrating very low frequency electromagnetic and resistivity data. Journal of Applied Geophysics. 57, 155-166. https://doi.org/10.1016/j.jappgeo.2004.10.003.

      [19] Adiat, K.A.N., Nawawi, M.N.M. & Abdullah, K. (2012). Assessing the Accuracy Of GIS-Based Elementary Multi-Criteria Decision Analysis as Spatial Prediction Tool: a case of predicting potential zones of sustainable groundwater resources. Journal of Hydrology, 440-441, 75-89. https://doi.org/10.1016/j.jhydrol.2012.03.028.

      [20] Kithiia, S.M. (2012). Integrated Water Resources Management in the wake of Climate Change scenario in Kenya. Unpulished doctoral dissertation, University of Nairobi.

  • Downloads

  • How to Cite

    Adegoke Ige, A., Joseph Olakunle, C., Okechukwu Ebuka, A., & Namdie Joseph, I. (2020). Hydrogeological appraisal of basement and sedimentary terrain in Ogun state using Geoelectrical methods. International Journal of Advanced Geosciences, 8(1), 95-101. https://doi.org/10.14419/ijag.v8i1.30848