IDENTIFYING THE DUWI FORMATION IN ZOG EL-BOHAR AREA, CENTRAL EASTERN DESERT OF EGYPT USING GROUND GAMMA-RAY SPECTROMETRY

Document Type : Original Article

Authors

1 (1) Department of Geophysics, Faculty of Science, Ain Shams University.

2 (2) Nuclear Materials Authority (NMA), P. O. Box 530 El Maadi, Cairo, Egypt.

Abstract

Identifying and outlining zones of enriched radioelement concentrations of an area is among the applications of the radiometric methods. The uranium-bearing phosphate beds of the Duwi Formation are targets for uranium exploration in the Egyptian Eastern and Western deserts. For this purpose, the ground gamma-ray spectrometric data of Zog El-Bohar area, central Eastern desert of Egypt is utilized. Examination of the data in the area of study records 52.6 Ur for Total Count (TC), 51 ppm equivalent Uranium (eU), 14 ppm equivalent Thorium (eTh) and 4.2 % Potassium (K). The data were analyzed and processed using effective analysis techniques such as factor analysis, ternary composite imaging as well as the statistical treatments.
Five litho-radiometric units could be delineated in the area from the radiometric point of view. These units are highly correlated with the surface geology of the area. Statistical analysis showed that the uranium-bearing phosphates Duwi Formation represents the highest radiometric values measured in the area. So, the Uranium-enriched provinces recorded in the area are mainly related to this formation

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