Geophysical Investigations Inferred from Airborne Potential Field Data of Parts of the Lower Benue Trough in Nigeria

The aeromagnetic data of Nkalagu and Abakaliki areas were interpreted using spectral analysis modeling to estimate depth the sedimentary thickness, nature intrusive, susceptibility values types minerals associated with them. total magnetic intensity was processed produce residual map which divided into 21 overlapping blocks. Each block subjected a program plot (SPP) developed MATLAB obtain depths top boundary Zt centroid Z0. revealed Zt, is basement ranging from 0.77 2.34 km an average value 1.72 between 2.22 5.93 km, 3.55 km. estimated profile 1, 2, 3, 4 at 5 1 1.68 1.32 respectively 2.3 respective 0.002, 0.003, 0.003 respectively, indicating presence igneous intrusions gabbro, diabase metamorphosed rocks quartzite schist, iron rich like pyrite, limonite, cassiterite arsenopyrite. maximum obtained two estimation methods confirm feasibility for hydrocarbon accumulations. In view above results, it evident that delineated results accounts mineralization in area can also destroy any present since numerous are indication exceedingly high temperature history.