The role of geomagnetic methods in the detection of mineral deposits at El-Hody area, south-eastern Aswan, Egypt

摘要

In this study we delineate the subsurface structures within an area of about 840 km(2) in southwestern Egypt, using magnetic methods. The main target is to establish the tectonic framework of the studied area and to understand the role of tectonics in the mineralization process. To do so, a land magnetic survey was conducted, complemented with available aeromagnetic data. This data set is processed using a series of techniques, namely, trend analysis, Werner deconvolution and 2.5 direct modelling. Results indicate that the most predominant tectonic trends are NW-SE, NE-SW and E-W directions. The depth to the basement rocks ranges from 0 to 1.3 km. These results agree with the drilled well data. We show a good correlation between the structures deduced from the magnetic analysis and the known mineral distributions. We conclude that mineralization is structurally controlled by faulting, probably as the result of hydrothermal circulation on fault planes.