Abstract
The focus of this study is to investigate the structures peculiar in Udi, Enugu State, Nigeria. This was achieved by delineating the regional from the residual, determining the lateral and sedimentary thicknesses of causative structures with their lateral boundaries and corresponding lineaments. Regional-residual separation was employed on the aerogravity dataset while Georeferencing and creation of new coordinate system was undertaken on the Landsat data. Causative sources with short and long wavelength trending in the NE-SW, NNE-SSW, E-W, WNW-ESE, N-S and NW-SE directions were found to exist within the study area as qualitative analysis was applied on the aerogravity and landsat data. The NE-SW and NW-SE trends are possible oil and gas rich belt within the area. Quantitatively, two depth source models D1 and D2 were identified. D1 depicting depth to deeply seated sources varies from 0.00071 to 0.0044 km with true thickness of 0.01 km. The shallow related sources expressed using D2 lies between 0.0014 to 0.0034 km with true value of 0.0005 km. If other conditions like structural features and depth parameters are met, a true sedimentary thickness of 0.01 km shows that the area will encourage mineral and water exploration rather than hydrocarbon exploration.
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