Abstract
Two types of remote sensing data are used in this work. These include Landsat TM imagery and aerial photography. Aerial photographs proved to be more useful in locating and determining local structures. Landsat TM imagery, through the application of some image processing techniques, proved more effective for lithologic discrimination of rock units and regional structure of the study area. The computer enhanced images are used to overcome the difficulties of mapping small outcrops where most of the lithological rock units are identified. Interpretation of image processed products, not supported by field checking, are concluded by constructing a preliminary geologic map and lineaments map for Jabal Eghi area. Eight lithological rock units and many circular features are recognized. These circular features should serve as potential areas for mineral exploration. As a result of this study Landsat TM imagery has proved more important than aerial photography. The use of more than one remote sensing data type such as is employed in this work is the ideal choice of proceeding with such studies because to some extent these two data complement each other