Browsing by Author "Abolarin, Solomon"
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Item Evaluation of Vertical Electrical Sounding Method in Groundwater Development in the Basement Complex Terrain of West-Central, Nigeria.(Faculty of Engineering and Technology, University of Ilorin, Nigeria, 2013) Olawuyi, Kehinde; Abolarin, SolomonThis research evaluated the Vertical Electrical Sounding (VES) method of groundwater development in the Basement Complex terrain of West Central Nigeria. It was aimed at verifying the reliability of VES in differentiating lithologies, predicting the depth to basement and probably, aquifer in groundwater development. In doing this, the Schlumberger electrode configuration was employed in the surveys while partial curve matching and computer iteration techniques were used to interpret the curves obtained. In all, seventy three VES were carried out and fourteen boreholes constructed. Comparison was made between the predicted depth to basement from VES and the actual depth from the drilling log. A linear relationship between the actual depth and that predicted by VES was established with coefficient of determination of 0.94 confirming the reliability of the VES method. None of the boreholes drilled was abortive.Item The Use of Electrical Resistivity Survey in Locating Aquifers in Ilorin Area of Kwara State, Nigeria.(Nigerian Association of Mathematical Physics, 2013) Olawuyi, Kehinde; Abolarin, SolomonThis research involved the use of electrical resistivity survey method for groundwater exploration in Ilorin area of Kwara State, Nigeria. The Vertical Electrical Sounding (VES) using Schlumberger array with the maximum spread of 200 m and partial curve matching/computer iteration techniques were used to interpret the data with the aim of accurately predicting the depth to basement and aquifer. A total of ninety five VES were carried out and thirteen boreholes constructed. The predicted depths to basement from VES and the actual depths from the drilling logs show a good agreement with each other and with results obtained from literature. The results of the research also confirmed the already known geological units of the western Nigeria Basement Complex Terrain and the drilling exercise was successful.