The geoelectric section is made up of (1) a 10 m thick layer having a resistivity of 10
ohmm that corresponds to clays; (2) a 5 m thick second layer with a resistivity of 27 ohm-m that probably corresponds to clay with a small percentage of gravel; (3) a 41 m thick geoelectric layer with an average resistivity of 12 ohm-m that corresponds to gravels and clays; (4) an 80 m thick fourth layer with a resistivity 41 ohm-m that corresponds to coarse gravels with clay matrix; and (5) the lowermost layer that has a resistivity of 8 ohm-m and corresponds to clays.
(3) Department of Geology, Obafemi Awolowo University, Ile-Ife, Nigeria; 2347032987836, E-mail: delefale@oauife.edu.ng; deleebenezer@yahoo.com Figure 5: Representative plots of apparent resistivity against AB/2 and interpreted geoelectrical models Apparent Thickness (m) Resistivity (
Ohmm) 278.00 0.90 4490.00 13.20 17224.00 54.60 1902.00 Apparent Thickness (m) Resistivity (
Ohmm) 907.00 2.10 1514.00 4.80 341.00 16.10 2654.00 19.00 238.00 Apparent Thickness (m) Resistivity (
Ohmm) 1167.52 0.59 2798.62 3.49 43505.27 8.77 1189.92 38.09 99435.09 Apparent Thickness (m) Resistivity (
Ohmm) 207.00 1.00 260.00 2.00 154.00 23.50 3023.00 10.40 98.00