WERNER DECONVOLUTION AND INTERPRETATION OF AEROMAGNETIC DATA OVER PARTS OF THE UPPER BENUE TROUGH, NIGERIA

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Date
1990-05
Authors
LECKY, Yusuf
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Abstract
The Werner deconvolution method of interpretation using aeromagnetic data along profiles has been used to carry out a basement study of parts of the Upper Benue Trough within latitudes 10°30'N to 11°30'N and longitudes 11°00'E to 12°00'E. Deconvolution was applied to profiles Spaced about 2 Km apart which made correlation of calculated depths from adjacent profiles possible. Depths which were consistent for adjacent profiles through the same anomalies were used in fitting magnetic basement surfaces to magnetic profiles and in preparing a magnetic basement contour map for the area. The results show that the maximum thickness of the sediments lies between 1.4 Km and 2.0 Km with the deepest portion located between Wawa and Dukul, Some magnetic lineaments were delineated in the qualitative interpretation which match some of the lineaments interpreted by Ajakaiye et al (1986). These have been related to structural changes in the magnetic composition of the basement rocks. It was also observed that the basement topography cannot totally account for all the magnetic intensity variation which is attributed to the poor resolution of the produced basement map as well as the heterogeneous magnetic character of the basement rocks.
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A thesis submitted to the Postgraduate School, Ahmadu Bello University, Zaria in partial fulfilment of the requirement for the award of the degree of Master of Science in Applied Geophysics. Department of Physics Faculty of Science Ahmadu Bello University Zaria MAY, 1990
Keywords
WERNER,, DECONVOLUTION,, INTERPRETATION,, AEROMAGNETIC,, DATA OVER PARTS,, BENUE TROUGH,, NIGERIA.
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