Abstract
Analysis of high-resolution aeromagnetic data was carried out to determine the trend of magnetic zones for hydrocarbon potential in the northeastern part of the Sokoto Basin, Nigeria. The study area is located between longitudes 5°00′E to 6°00′E and latitudes 12°30′N to 13°30′N, covering four (4) map sheets: Sheet 11, 12, 30, and 31, representing Rabah, Isa, Dange, and Mafara, respectively. The total magnetic intensity (TMI) map covering the area was processed and filtered to obtain the residual anomaly map. Upward continuation filters were applied to the residual map to enhance magnetic zones within the area. The total magnetic intensity map indicates that the sedimentary thickness of the northeastern part of the Sokoto Basin generally increases from south to north. The results of the upward continuation at different heights revealed that high sedimentation is concentrated in the northeastern part, particularly around the Isa area. Conversely, high magnetic values, likely due to igneous intrusions, predominate in the southwestern part of the maps. The trend of the magnetic zones decreases from the southwest (SW) to the northeast (NE) direction. This pattern indicates that the northeastern part of the study area represents the deepest section of the basin and is therefore considered a potential site for hydrocarbon accumulation.