Abstract

The recent high-resolution aeromagnetic (HRAM) data for the whole of Bida Basin in north-central Nigeria has been revaluated for depth to bottom of magnetic sources (DBMS) using the modified centroid method for fractal distribution of sources. Analysis of the HRAM map shows magnetic lineations due to tectonic features that may be connected to regional tectonic framework of West and Central Africa Rift Systems. The HRAM data were also divided into 28 overlapping blocks and each block was evaluated to obtain depths to the top and centroid of magnetic sources. Both depth values were consequently used to calculate the DBMS for each block. The results reveal that the DBMS varies between 5.41 and 19.29 km with an average of 12.01 km. Hence, this study would contribute to further explication of the geo-processes and rheology of Bida Basin in north-central Nigeria.