Lithological mapping in the Central Eastern Desert of Egypt using ASTER data

2010 ◽  
Vol 56 (2-3) ◽  
pp. 75-82 ◽  
Author(s):  
Reda Amer ◽  
Timothy Kusky ◽  
Abduwasit Ghulam
Keyword(s):  
Eastern Desert ◽  
Lithological Mapping ◽  
Aster Data ◽  
Central Eastern Desert ◽  
Central Eastern

scholarly journals Utilization of Space-Borne Imagery for Lithologic Mapping: A Case Study From Um Had Area, Central Eastern Desert, Egypt

2014 ◽  
Vol 6 (2) ◽  
pp. 113 ◽  
Author(s):  
Nedal Qaoud
Keyword(s):  
Remote Sensing Data ◽  
Principal Component ◽  
Eastern Desert ◽  
Granitic Rocks ◽  
Gray Scale ◽  
Band Ratio ◽  
Lithological Mapping ◽  
Central Eastern Desert ◽  
Dokhan Volcanics ◽  
Central Eastern

Remote sensing data are used to discriminate between the different lithologies covering the Um Had area, Central Eastern Desert of Egypt. Image processing techniques applied to the Enhanced Thematic Mapper (ETM+) data are used for mapping and discriminating the different basement lithologies of Um Had area. Principal component analysis (PCA), minimum noise fraction (MNF) transform and band rationing techniques provide efficient data for lithological mapping. The study area is underlain by gneisses, ophiolitic melange assemblage (talc-serpentinite, metagabbro, metabasalt), granitic rocks, Dokhan volcanics, Hammamat sediments and felsites. The resulting gray-scale PC2, PC3 and PC4 images are best to clearly discriminate the Hammamat sediments, amphibolites and talc-serpentinites, respectively. The gray-scale MNF3 and MNF4 images easily discriminate the felsites and talc-serpentinites, respectively. The band ratio 5/7 and 4/5 images are able to delineate the talc-serpentinites and Hammamat sediments, respectively. Information collected from gray-scale and false color composite images led to generation of detailed lithologic map of Um Had area.

scholarly journals Target Detection Using Matched Filtering Analysis of the ASTER Data for Exploration of Uranium Mineralization in the Northern Part of El-Erediya Pluton, Central Eastern Desert, Egypt.

2016 ◽  
Vol 2 (3) ◽  
Author(s):  
El Zalaky , Abdelmonsif
Keyword(s):  
Target Detection ◽  
Thermal Emission ◽  
Atmospheric Correction ◽  
Eastern Desert ◽  
Uranium Mineralization ◽  
Matched Filtering ◽  
Target Zones ◽  
Aster Data ◽  
Central Eastern Desert ◽  
Central Eastern

   The younger granite of El-Erediya pluton represents one of the most important prospect areas in the Egyptian Central Eastern Desert which comprise surface and subsurface U-mineralization confined to the southern part of the pluton. Due to the high uranium airborne anomaly of the northern part than the southern part of the pluton, the granite of northern part need to reevaluate its U-potentiality according to the modern techniques that were developed in the last decade.      The main goal of this paper is to examine the efficiency of the Advanced Space-borne Thermal Emission and Reflectance Radiometer (ASTER) data in mapping the alteration zones that could be host uranium mineralization within the younger granite of El-Erediya pluton using spectral analysis techniques.      ASTER data are especially attractive to many geological researchers in Africa, due to their open availability and associated minimal costs for academic use. The three visible and six near-infrared bands, which have 15-m and 30-m resolution, respectively, were calibrated by using atmospheric correction.      Target detection using spectral-matching algorithm was applied to recognize the most predominant alteration components such as hematite, kaolinte, illite and alunite as more or less considered as path finder of uranium mineralization to trace the most promising zones affected by these alteration within the granite of El Erediya pluton.      Three ASTER-derived promising areas have been detected, including the prospect area, using the matched filtering methods with a confidence ranging from 68 to 95%. All of these zones that delineated by target detection technique show good correlation with those on field and on the reference geologic map.      Two of these target zones are proved in the field and founded along the structural features cutting the northern parts of El Erediya pluton that have not been identified before. Mineralogical studies were carried out, using ore and scanning microscope and XRD, for some selective mineralized samples collected form one of these tow target zones. These investigations confirm the presence of uranophane mineral as uranyl silicates in addition to zircon and fluorite. These minerals are found in close association with hematitization, kaolinitization, and illitization alteration.  

ASSESSING THE ENVIRONMENTAL IMPACTS OF GOLD MINING ACTIVITIES, SUKARI MINE, CENTRAL EASTERN DESERT, EGYPT

2019 ◽  
Author(s):  
Ahmed Abdelaal ◽  
◽  
Mohamed Sultan ◽  
R.V. Krishnamurthy ◽  
Mustafa Kemal Emil ◽  
...  
Keyword(s):  
Environmental Impacts ◽  
Gold Mining ◽  
Eastern Desert ◽  
Mining Activities ◽  
Central Eastern Desert ◽  
Central Eastern
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