Geoelectric Investigation for the Delineation of the Subsurface in Ologbo and Ajoki, Edo State

Abstract

Geoelectric investigation was carried out in Ologbo and Ajoki, in Edo State, to delineate the subsurface in the area. The purpose of this study was to analyse the number of model layers, their resistivities, thicknesses and depths, as it is related to smooth and equivalence layers and also to know the number of suppressed layers. During the study, 7 VES were carried out in selected locations using the Schlumberger array. The maximum electrodes spacing was 294 m. The data collected were interpreted by curve matching and computer iterations. The curve types identify for the locations were KQH, HAK, KHK, HK, and KH with various layer resistivities and thicknesses and depths. Also 4-5 model earth layers, 14-smooth and 14-equivalence earth layers were encountered which implies that some layers have been suppressed.

Keywords:> Geoelectric, Delineate, Vertical Electrical Soundings, Schlumberger array

Journal of the Nigerian Association of Mathematical Physics, Volume 19 (November, 2011), pp 329 – 334