Interpretation of High-resolution aeromagnetic data over Nasarawa and Environs was carried out to determine structures, contacts and edge boundaries of magnetic sources.These methods use the principle that anomalies at all levels and the rate of change in magnetic susceptibility in the horizontal (x) and vertical (y) directions can be resolve simultaneously, the result revealed two prominent contacts that coincide with paleo structures in the study area, other magnetic anomalies that depict structural disturbances are also present and correspond with the products of Pan African deformational episode. Faults were interpreted along linear aeromagnetic anomalies and breaks in anomaly patterns. Many linear features correspond to topographic features, such as drainages, a few of these are inferred to be fault-related, which may reflect structural transition between rift basins, these identified trends are attributed to tectonic activities in the area. These show that the basement complex rocks are heavily faulted, fractured and invaded by dykes, veins and sills, this could be as result of the multiple deformational episodes/ tectonic activities that occurred in the area. Result of the tilt derivative reveals that the Romanche and Chain fracture zones have continental extensions and are likely to control the major NE – SW fracture system in the basement complex rocks of north central Nigeria and along the Benue Trough.
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