Demarcating Productive Parts of Migori Greenstone Belt using Edge Detection Techniques

Abstract

Edge detection is one of the enhancement procedures in potential data interpretation. A number of edge detection methods can be applied in the interpretation of gravity data, the choice of the method depends on the estimated depth of the anomaly causative body. In this study, edge detection techniques of analytic signal and tilt angle derivative were employed on the delineated real gravity field anomaly of Migori greenstone belt. The choice of the two techniques was informed by the results from power spectral analysis of gravity data, which mapped the anomaly source structures at shallow depths of below 800 m. This was conducted in order to demarcate the boundaries of the productive parts of the greenstone belt