Abstract
English
Highlights
Aeromagnetic survey has remained a powerful tool in modern geological mapping and mineral exploration purposes
The shape, dimensions, and amplitude of an induced magnetic anomaly is a function of the orientation, geometry, size, depth, and magnetic susceptibility of the body, as well as the intensity and inclination of the earth's magnetic field in the survey area (Biswas, 2016, 2017; Biswas and Acharya, 2016)
In order to contribute to a better understanding of the anomalous structures in the southern portion of the Lower Benue Trough, we have considered the use of spectral analysis of the aeromagnetic data over Abakaliki and Ugep areas to compute the depth to magnetic source rocks in the area
Summary
Aeromagnetic survey has remained a powerful tool in modern geological mapping and mineral exploration purposes. The shape, dimensions, and amplitude of an induced magnetic anomaly is a function of the orientation, geometry, size, depth, and magnetic susceptibility of the body, as well as the intensity and inclination of the earth's magnetic field in the survey area (Biswas, 2016, 2017; Biswas and Acharya, 2016) For exploration purposes, both ground and aero-magnetic data have been used to investigate the presence of mineral deposits in. The Asu River Group whose type outcrops in Abakaliki has estimated thickness of about 2000 m (Ofoegbu, 1985a) and is Albian to Cenomanian It comprises of argillaceous sandy shales, laminated sandstones units and minor limestones with an interfingering of mafic volcanic (Nwachukwu, 1972).The shales are fissile and highly fractured. They are Campanian-Maaestrichtian in age and are mainly marine in character, with some intercalations of sandstones
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