الفهرس 
1.1. Location of the study area
Geologic settingsOnly 14 pages are availabe for public view
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Abstract
The significance of the Gattar-V prospect originates from its radioactive mineralization potentialities, as it is one of the radioactive mineralizing prospects situated in the northern periphery of the Gabal Gattar granites, North Eastern desert, Egypt. Gabal Gattar is situated approximately 35 km to the west of Hurghada town on the Red Sea Coast. This prospect is located approximately at latitudes 27° 07′ 05′′ to 27° 07′ 40′′ N and longitudes 33° 16′ 40′′ to 33° 17′ 50′′ E. According to geologic setting, the Gattar-V prospect is primarily composed of Late Orogenic Plutonites (Gattarian Granites) of the Late Precambrian. This has a strong contact with the post-geosynclinal Hammamat sediments. The prospect region is structurally impacted by a variety of faults extending NNW, NW, NE, and ENE, as well as a set of shear zones trending ENE. In order to provide better information about the radioactive provinces in the area, the main objective of the present project is to utilize the ground magnetic and ground spectrometric geophysical data to be used in delineating the expected uranium province zones. This can be achieved by statistical analysis of different radioelements across the different rock units exposures. The main purpose of using the ground magnetic data is to estimate the depth to the basement practice (mafic intrusive rocks, as well as interpreting the different magnetic maps in terms of structural settings. These results will then be integrated with the geochemical data sets, which will be carried out by collecting samples from appropriate locations throughout the study area. The various ground magnetic maps, including the RTP, residual, regional analytical signal, enhanced residual, horizontal derivative, tilt angle, tilt derivative, and its total horizontal derivative and their enhanced ones, provide an interpreted structural elements map, which primarily oriented in ENE, NS, EW, and NE while the secondary trend was oriented in NNW. Additionally, the location and depth magnetic causative body contacts in residual and regional magnetic fields is detected using 3D Euler deconvolution and source parameter index techniques. These depth results are agreeing with the residual and regional depths extracted from the magnetic power spectrum of the RTP map as 38m and 88m respectively. The uraniferous anomalous zones in the study area have been identified and delineated using qualitative and quantitative interpretation of the ground spectrometric data. the radioactive elements distribution reaches to 51 Ur in The total count (TC), up to 24 ppm in the equivalent Uranium (eU), recorded 58 ppm in the equivalent Thorium (eTh) and the Potassium (K %) content reaches to 6 %. Numerous techniques, including composite imaging, factor analysis, statistical treatment, identification and delineation of the uraniferous province, uranium migration, and dose rate, were used to quantitatively treat the gamma-ray spectrometric data. These methods demonstrated that the uranium-rich shear zone at the contact between granite and hammamat sediments is primarily associated with the higher radioelement concentrations. The uranium migration calculations elucidate that granite 2, hammamat sediment2, debris 2, shear zone and wadi sediments show uranium migration in. The uranium province zones that exceeds X+2S and/ or X+3S are mainly associate with granite 2, hammamat sediment2, debris 2, shear zone and wadi sediments. The geochemical investigations carried out on the collected samples show granites from the Qattarian region were divided into uraniferous and mineralized granites based on petrography, radioactive mineral concentration, and radioactivity. The permissible concentrations of uranium are significantly higher than the international standards. The measured uraniferous and mineralized rocks had an extraordinarily low eTh/eU ratio compared to the average of igneous rocks, which suggests that uranium was enhanced under reducing conditions. The two granitic different types are regarded as highly productive rocks based on the typical uraniferous and mineralized granite eU/eTh ratios. The interrelations of the radioelements show that the distribution of radioelements is related to hydrothermal redistribution of radionuclides associated with uranium deposition in addition to magmatic redistribution. Environmental parameters for almost all of the investigated samples are much greater than the specified allowable levels.