الفهرس 
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Abstract
This study aimed to : Um Gir and EL Atshan-II uranium prospect areas are located at about 40 Km southwest of Qusseir city on the Red Sea Coast. The bostonite rocks represent the most promising rock in the two studied areas where they form the most important rock for high radioactivity and uranium mineralization. Therefore, Systematic ground gamma-ray spectrometric and magnetic surveys were taken on a grid pattern that consists of parallel profiles with 20 m spacing trending in the E-W direction and 20 m station separation in the two areas. The IP/resistivity survey was performed for the two areas along five selected profiles using the dipole-dipole arrays, with dipole length of 20, 40 m to follow anomalous zones at deeper depths. Also, paleomagnetic investigations were carried out. The analysis of the ground gamma-ray spectrometric data of Um Gir and EL Atshan-II uranium prospect areas revealed that the bostonite is the highest rock of all rocks in uranium potentiality. The recorded highest equivalent uranium values are 174 ppm and 310 ppm for Um Gir and EL Atshan-II uranium prospect areas respectivelyThe estimated average depths of regional and residual magnetic sources are 18m and 30m, 17m and 29m for Um Gir and Atshan-II areas respectively. These ranges of frequencies were used for constructing the high-pass and low-pass magnetic anomaly maps. . The integration of the resistivity and chargeability data may indicate that there are some mineralized zones with depth ranging from near surface to more than 70 m and are mainly associated with bostonite rocks. Paleomagnetic investigations were carried out on oriented sites for bostonite rocks.