APPLICATIONS OF GEOINFORMATION SYSTEMS AND REMOTE SENSING IN THE STUDY OF GEOLOGY AND AIRBORNE RADIOMETRY OF JEBEL UMM GI-lAYJ-JEBEL HUMMER WAJJAT AREA, CENTRAL EASTERN DESERT, EGYPT

Abstract

The main purpose of this dissertation is to use the geoinformation systems (GIS), remote sensing and the integrated geological and geophysical data in a comprehensive interpretation to determine radiometric, spectral reflectance, and accurate spatial distribution characteristics of different rock units, as well as geologic units bearing radioactive ores. The total studied area is 1763.75 Km2 and the outcropping rocks cover an area of about 982.07 Km2 represent about 55% oftotal area while the area ofwadi deposits is 781.68 Km 2 represent about 45% ofthe total area of study. The granitic rocks are isolated and discriminated at > 15 K%, > 40 ppm eTh, > 20 ppm eU, and> 50 M.R!h Tc isoline (iso) levels. Coarse­ grained biotite granites and muscovite granites are isolated and discriminated at > 35 K%, > 80 ppm eTh, > 30 ppm eU, and > 80 M.R!h Tc isoline levels. There are only 3 areas record > 35 K% iso, J. Humr Wajjat, J. AI Unayji, and J. Umm Bakrah. There are only 2 areas record >200 ppm eTh iso, J. Humr Wajjat, J. AI Unayji. There are only 4 areas record > 100 ppm eU iso, J. Humr Wajjat and J. AI Unayji. There are only 4 areas record > 100 M.R!h Tc iso, J. Humr Wajjat, J. AI Unayji, J. AI Yatimah, and J. Umm Bakrah. The basic-ultrabasic, metasediment, and metavolcanic rocks are discriminated and isolated at < 15 K%, < 40 ppm eTh, < 30 ppm eU and < 40 M.R!h.