Groundwater potential evaluation using electrical resistivity method in a typical basement complex area of Nigeria

A geophysical survey employing the electrical resistivity method was carried out within the permanent site of the University of Agriculture, Abeokuta (UNAAB), Ogun state, Southwestern Nigeria. Atotal of 46 Schlumberger vertical electrical sounding (VES) stations were occupied using the ABEM Terrameter SAS 300B model with maximum inter-electrode spacing (AB) of 200m. The aquifer unitsare characterized by sand, sandy clay/clayey sand, weathered and fractured rocks. The plot of the aquifer resistivity against the coefficient of anisotropy shows that the basement in the study area is underlain by three types of rocks: Quartzite with aquifer resistivity in the range of 50 – 430m and coefficient of anisotropy between 1.01 and 1.18. This weathered mainly to sand with good to high groundwater yield; Granite-gneiss with aquifer resistivity in the range of 40 – 90m and coefficient of anisotropy of between 1.18 and 1.88. This weathered to a mixture of clay and sand with low to medium groundwater yield; Mica-schist with aquifer resistivity in the range of 16 – 40m and coefficient of anisotropy of between 1.3 and 2.3. This weathered into more of clay because of its high ferromagnetic mineral content and as such has zero to very poor groundwater yield

A geoelectric mapping of Ijapo, Akure Southwest Nigeria and its hydrogeological implications

No abstract availabl

Geoelectric study of the clay deposit in Agbede, Estako west LGS, Edo state

No Abstract.Global Journal of Pure and Applied Sciences Vol. 13 (2) 2007: pp. 215-22