EDGE DETECTION OF LITHOLOGICAL STRUCTURES USING ANALYTICAL SIGNAL TECHNIQUE ON GRAVITY DATA; A CASE OF GOMBE ARM OF BENUE TROUGH

The boundaries between the different litho-structures in the Gombe arm of Benue trough
were delineated by interpreting gravity data of the study area using the Analytical signal method.
This helped to reveal the potentials in the area. The bouguer and analytical signal maps of the area
were produced to show the distribution of the anomalies in the study area. The method displays the
gravity anomalies of an area through the amplitudes of the directional analytic signals. The study
area showed high anomalies in the northeastern part and southern part of the study area i.e. Dukku
and Akko, which was attributed to the presence of metamorphic rocks which caused positive
anomalies and sedimentary rocks in the areas which caused the negative anomalies