Al-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253525Issue 1-D20140601LITHOLOGICAL MAPPING IN THE EASTERN DESERT OF EGYPT,WADI UM GHEIG AREA, USING LANDSAT ENHANCED THEMATIC MAPPER (ETM+)182260810.21608/absb.2014.22608ENIbrahimAbu El-LielFaculty of Sciences Al-Azhar UniversityNehal M. A.SolimanNational Authority for Remote Sensing and Space SciencesMahmoud H.BekhietFaculty of Sciences Al-Azhar UniversityMohamed S.El-HebiryFaculty of Sciences Al-Azhar UniversityJournal Article20140112Wadi Um Gheig area comprises a variety of Neoproterozoic rocks including serpentinites of ophiolite assemblage,<br />metavolcanoclastics, schists, metavolcanics and metagabbro of island arc assemblage. The migmatite and gniesses represent<br />high grade metamorphic rocks. The syntectonic fresh gabbro, as well as tonalite and granodiorite in addition to the late to post<br />tectonic granitoids are recorded. Lithological mapping in the Wadi Um Gheig is carried out by using Landsat Thematic Mapper<br />(ETM+) image enhancement techniques including RGB band ratios and supervised classification. In the present study new<br />proposed band ratio (7/1, 3/1, 5/7) with the supervised classification are used and proved a good efficiency for discriminating<br />and mapping the different rock units in the Wadi Um GheigAl-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253525Issue 1-D20140601CONTRIBUTION TO THE MIERALOGY AND RADIOACTIVITY OF STREAM SEDIMENTS OF WADI RAS BAROUD AREA, NORTH EASTERN DESERT, EGYPT29462260910.21608/absb.2014.22609ENAEl AzabNuclear Materials Authority. P.O. Box 530, El Maadi, Cairo, EgyptAOmran,Nuclear Materials Authority. P.O. Box 530, El Maadi, Cairo, EgyptA. HHassanNuclear Materials Authority. P.O. Box 530, El Maadi, Cairo, EgyptJournal Article20140104Wadi Ras Baroud area is located in the North Eastern Desert of Egypt, covering an area of about 170km2. It is covered by<br />basement rocks and dissected by several wadies. The rock assemblages cropping out at Wadi Ras Baroud area comprise, quartz<br />diorites, granodiorites, syenogranites, dykes and Quaternary sediments filling the streams of the studied area.<br />The grain size analysis and their distribution is a fundamental descriptive measure for clastic sediments. The results of the<br />statistical parameters are a graphic mean (Mz) ranging from 0.4 to2, inclusive graphic standard deviation (I) ranging from<br />1.2 to 1.9, inclusive graphic skewness (SkI) ranging from -0.3 to 0.22, and inclusive graphic kurtosis (Kg) ranging from 0.7 to<br />1.1. These parameters clear that they are coarse to medium sand, poorly sorted, near to coarse skewed samples, and platykurtic<br />and mesokurtic, so these sediments are represented by the turbidity currents environments.<br />The identified minerals in the heavy fractures are represented by magnetite, ilmenite, hematite, garnet, rutile, titanite, zircon,<br />thorite, ferogusnite, and columbite. The radiometric study of the stream sediments of Wadi Ras Baroud indicates that the<br />average concentrations of U and Th are 10.38ppm and 25.5ppm respectivelyAl-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253525Issue 1-D20140601GEOLOGY, MINERALOGY AND RADIOELEMENTS POTENTIALIYY OF MICROGRANITE DIKES TO THE SOUTH OF WADI ABU HADIEDA AREA, NORTHERN EASTERN DESERT, EGYPT47622261010.21608/absb.2014.22610ENAli AOmranNuclear Materials Authority, Cairo, Egypt,Journal Article20140204The granite dike swarms intruding the older granitiod and occasionally the younger gabbros were emplaced through<br />a shear zone extending in NE-SW direction. These dikes are composed mainly from alkali feldspar granites. They are fine<br />grained, hard and compact vary in color from pink, red, reddish brown and occasionally bloody red. It is affected by varying<br />degrees of alterations and subjected to deformation processes. Mineral segregations and pegmatite pockets are encountered<br />along deformed and altered zones. Alkali feldspars mainly perthites and microcline, quartz, little sodic plagioclase<br />and biotite represent the main rock forming minerals. These dikes possess high contents of radioelements especially<br />thorium. The eTh contents range from 63.9 ppm to 2523 ppm with an average 465.8 ppm where the eU content range from<br />25ppm to 497.9 ppm with 106.3 ppm average. The mineral segregations give the highest level of eU and eTh contents reach up<br />to 7331 ppm and 1386 ppm respectively. Secondary uranium minerals (uranophane and curite), thorium minerals (thorite) and<br />U- and Th-bearing minerals (Zircon, allanite, columbite, samarskite, xenotime, monazite, kasolite and titanite) are identified.<br />Other non radioactive minerals such as magnetite, goetite, hematite, cronstedtite, pyrite, fluorite, garnet are also identified.<br />Also, chemical analyses (XRF) revealed presence of high concentration of U, Zr, Y, Nb, Ba, Zn, Rb and Sr in addition to presence<br />of V, Pb, Ni and Cr. Au and Pt are also presentAl-Azhar University, Faculty of Science (Boys)Al-Azhar Bulletin of Science1110-253525Issue 1-D20140601MINERALOGY OF STREAM SEDIMENTS IN THE GABAL KAB-AMIRI AREA, CENTRAL EASTERN DESERT, EGYPT63732261110.21608/absb.2014.22611ENMohamedA. WetaitNuclear Materials Authority, Cairo, EgyptAhmed F.El HadaryNuclear Materials Authority, Cairo, EgyptAhmed A.KhamiesNuclear Materials Authority, Cairo, EgyptBasem A.ZoheirFaculty of science, Banha, EgyptSamehM. ElalfiNuclear Materials Authority , EgyptJournal Article20180203This study provides an information about the heavy mineral composition of stream sediments of Wadi Kab - Amiri, Wadi<br />Kab Um El Abas and Wadi El Saqia in the central Eastern Desert of Egypt. Geological and mineralogical investigations reveal<br />the significant potential of the stream sediments in all the wadis for radioactive anomalies. Mineralogy of the heavy mineral<br />separates includs variable contents of rare metal-, Th- and U-bearing minerals. Monazite, thorite and allanite are recorded in<br />addition to several Nb-Ta-bearing phasess. Electron microprobe and EDX analyses constrain on the variable contents of Th<br />and U in most heavy minerals under investigation. Considering the proximal radiometric anomalies and similar mineralogical<br />composition of the KabAmiriintrusion and the more significant episyenitemass, it is concluded that the investigated stream<br />sediments are endogenic sediments with inherited radiogenic and mineral budget.