Spectral Determination of Depth to the Basement Rocks under Birnin-Kebbi and Tambuwel/Fokku Area of Sokoto Basin, Nigeria.

Abstract

ABSTRACT In this study, depth analysis method was used in determining the depth of the basement rocks of Birnin-Kebbi and Tambuwel/Fokku area. Magnetic data used in this study were collected through Aeromagnetic survey of a substantial part of Nigeria which was carried out by geological survey between (1974-1980). Depth of the magnetic layers was determined using statistical spectral depth analysis of the residual magnetic field and surface maps of the layers was produced and analyzed. The residual magnetic data were divided into twelve sections and the spectral depth was calculated for each section. The result showed that the lowest depth to basement is 1.200 km and the highest is 1.65km. However, this thickness is considered too low for any petroleum potentiality.