ABSTRACT
The study employed standard data enhancement and interpretations techniques including reduction to the equator (RTE), upward continuation, second vertical derivatives (SVD), SPI and Analytical depth for the re-evaluation of high resolution aeromagnetic (HRAM) data of Gboko and Katsina-ala area. The study focused on delineation of features and structures that are disposed to the occurrence and emplacement of hydrocarbon and mineral resource prospects. Results of the SVD and Analytical signal were qualitatively interpreted and showed linear peaks or ridges representative of lineaments, contacts and causative bodies, dykes, shear zones that could be indicative of mineralization or conduits for mineralization fluid responsible for the formation of Lead-Zinc mineralization widely reported within the valley. The study revealed that analytical signature around the Yandev area may be representative of mineralization that occur in silicified limestone sequence currently being mined by the Dangote Cement Company Gboko. This informed the decision to accord areas with analytical signature similar to Yandev more importance in mineral resource exploration. Quantitative interpretation by means of SPI and analytical depth method was carried out to determine the depth to the basement. The SPI depth value ranges from 103.6m to 3800.4m while the analytical depth showed depth values ranging from 1964.6m to 3474.3m. Both methods show comparable results and reveal shallow and deep magnetic sources that are indicative of mineralization and deeply burried basement rocks respectively. The basement topography revealed various sub-basins separated by basement ridges within which hydrocarbon accumulation can occur, such as Tsuwa Sub-basin with depth of 2.4 to 3.8 km.
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