Geological and structural interpretation of South–East Voltaian basin, Ghana, using airborne gravity and magnetic datasets
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Date
September, 2015.
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Abstract
Airborne gravity and magnetic methods were used to interpret the geology of the south
eastern Voltaian, Ghana. The study was aimed at mapping lithologies and geological
structures responsible for any observed anomaly in the Area. The enhancement filters
applied were used to reduce signal–to–noise ratio. The high-resolution airborne gravity
and magnetic data delineated the Densubon Sandstone Formation which was permeated by
a Mafic subvolcanic intrusion and the Bimbila Formation which was also permeated by a
felsic granitic intrusion. The Densubon Sandstone Formation, located at the southern part of
the study area and the Bimbila formation also located at the northern part of the basin, were
separated by a geological contact which trended NE–SW. The results show that the Voltaian
Basin is underlain by the Proterozoic Birimian Supergroup which could be the reason for
both the high gravity and magnetic signatures.
Description
Thesis Submitted to the Department of Physics, Kwame Nkrumah University of Science and Technology in partial fulfillment of the requirements for the degree of Master of Philosophy in Geophysics.