الفهرس 
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Abstract
Gabal AlJarrah area lies in the Central Eastern Desert of Egypt. It is bounded by latitudes 26017 N to 260 42 N and longitudes 330 15 E to 330 50 E. The area under study is connected with Qena, the nearest largest town on the Nile valley, by a desert road along Wadi AlGedami and along Wadi AlJarrah from the southwest. There is also another desert road passing along Wadi ElMissikat till km 85 on the asphaltic road of Qena Safaga, 85 km to Qena or 75 km to Safaga on the Red sea coast. The general outline of topography of the investigated area shows that the central eastern parts have been built up of basement rocks, essentially of relatively high and rugged mountains. The most important land marks exist in the area under consideration, Gabal AlJarrah (1055 m), Gabal AlAradiyyah (1011 m), Gabal KabAmirah (932 m), Gabal AbuFurad (1032 m), Gabal Wairah (1039 m), Gabal Abu Qarahish (1058 m), and Gabal ElMissikat (891 m). The main Wadis traversing the area are Wadi ElMarkh, Wadi Maghrabiyyah, Wadi AlNamousiyyah, WadiAbuJaridah, Wadi AbuHad, Wadi abuShihat, Wadi AbuHamur, Wadi AbuFurad, Wadi Mohamed Rabah, Wadi UmTaghir, Wadi AbuMuraywat, Wadi Simnah, Wadi AlWuayrah, Wadi Buhlug and Wadi KabAmirah. The courses of main wadis are often structurally controlled. It is mainly covered by Precambrian igneous and metamorphic rocks overlain by Cretaceous Nubian Sandstone and Quaternary Wadi Deposits. The study area shows a special importance, as it comprises large masses of granitic rocks, which show some indication of the presence of radioactive mineralization as detected by the airborne radiometric survey