Estimation of Basal Depth of Magnetic Sources from High Resolution Aeromagnetic Data of Middle Niger Basin, Nigeria using Adapted Centroid Technique for Fractal Distribution of Sources

Abstract:

An estimate of depths to the bottom of magnetic sources in the Middle Niger Basin, north-central Nigeria has been made from a recently acquired high-resolution aeromagnetic data using adapted centroid technique for fractal distribution of sources. The result shows that the depth varies between 11.71 and 26.53 km. Deeper values are found in northern and central regions while values as low as 12 km were observed in the southern part. The shallower depths to the bottom of magnetic sources may be representing the thermal/petrological boundaries in the basin. This study is therefore crucial for quantitative understanding of the geo-processes and geothermal parameters in the study area.