THE DISTRIBUTION OF RADIOELEMENTS IN EL GLUF BIOTITE GRANITE, NORTH EASTERN DESERT, EGYPT - A GUIDE TO THE RECOGNITION OF ANOMALOUSLY RADIOACTIVE ZONES
Aa. Ammar et al., THE DISTRIBUTION OF RADIOELEMENTS IN EL GLUF BIOTITE GRANITE, NORTH EASTERN DESERT, EGYPT - A GUIDE TO THE RECOGNITION OF ANOMALOUSLY RADIOACTIVE ZONES, Journal of African earth sciences, and the Middle East, 16(4), 1993, pp. 473-488
El-Gluf area is located in the north Eastern Desert of Egypt. It is un
derlain mainly by Precambrian basement rocks and Phanerozoic sediments
. It has been systematically surveyed using high-sensitivity airborne
gamma-ray spectrometric and magnetic methods. To identify and outline
significant radiometric zones of anomalously high uranium and thorium
concentrations in El Gluf biotite granite. These zones could be favour
able for potential economic radioactive and/or metallic mineralization
. This study could serve as a model for investigating the relationship
between the geological structure and radioactive mineralization. Stat
istical analysis of the gamma-ray spectrometric data were carried out
to delineate anomalies. A two-dimensional trend analysis of faults as
traced from the geological map, the radiometric gradients, magnetic li
neations and the courses of wadis (valleys) were carried out to deline
ate major and minor trends in the area. Seven spectrometric anomalies
(two pure uranium, two pure thorium, and three mixed) could be related
to the prevailing faulting directions: N-S, N-W and NE. The NW and NE
fault trends proved to have a significant impact on the localization
of radiometric anomalies, which may point to potential and structurall
y controlled uranium and thorium mineralizations whose structures are
considered to have acted as channel ways for the mineralized solutions
.