The Egyptian underground complex is believed to represent part of the Arabian-Nubian Shield (ANS) or the north-eastern extension of the Nubian Shield fig. The rocks of the Neoproterozic basement complex of the province (ANS) through the Egyptian one consist mainly of gneisses, volcanoes and metasediments that are intruded by granites, granodiorites and a series of dolerite dykes, and occupy the southern part of the Sinai and cover a large area of the eastern desert forming the Red Sea mountain ranges, the northern tip of this mountain range commencing at about 28° 40' north latitude; and the range extends about 830 km southward into Sudan, gradually increasing in width from a few kilometers to nearly 400 km along the border with Sudan. Furthermore, there are basement rocks covering limited areas in the Nile Valley at Aswan, as well as the southern part of the Western Desert at G. Uweinat. The Eastern Desert was divided into three provinces; Northern Eastern Desert (NED), Central Eastern Desert (CED) and Southern Eastern Desert (SED). These three domains reflect the following: (1) there is a much higher concentration of granitoids in the NED and SED than in the CED; (2) Ophiolites and serpentinites are missing from the NED; (3) gneisses are more abundant in the SED; and 4) The CED contains the greatest concentration of rocks with strong oceanic affinities, such as ophiolites and the Banded Iron Formation (BIF). The investigated area is the Eastern North Desert Province, whose basement rocks are largely composed of granitic rocks together with limited outcrops of high-grade gneisses, Dokhan volcanoes, and Hammamat sediments or their equivalents. Here, the ophiolitic mélange is very limited compared to that found in the central and southern parts of the Eastern Desert of Egypt. The subterranean rocks of the northern eastern desert of Egypt have been previously described and studied by many authors. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get an Original Essay Granitic rocks constitute approximately 60% of the total Neoproterozoic outcrops of the Eastern Desert of Egypt. Their wide distribution and clear identification in the field have prompted many authors to classify and describe them as El Ramly and Akaad (1960); Akaad and Noweir who classified granitoids in terms of gray and pink granites, as well as older and younger granites. And El Gaby (1975) first classified the granitic rocks of Egypt into two groups: (a) syn-orogenic granitoids, which include gray granites representing the oldest granites and (b) post-orogenic granitoids which include pink granites and red and represent the youngest granites, while (Akaad et al., 1979) classified the granites in Egypt into older granites (grey) and younger granites (pink). The oldest granites are mainly diorites, quartz diorites, hues and granodiorites. The younger granites are mainly monzogranites, sienogranites and alkaline feldspar granites. On the other hand, Greenberg (1981) classified granitoids based on their geological context and petrography into three phases (Phases I, II, and III). Phase I consists mainly of granodiorites with minor monzogranites, while phase II consists mainly of monzogranites and sinogranites. Phase III consists mainly of alkaline feldspathic granites. The four focused areas can be described geologically as follows; The Ras Gharib area represents a coastal region covered by Pliocene-Recent alluvial deposits mainly represented by sands and gravels. The most distinct surface exposures concern the granitic and metamorphic masses of the Precambrian basal complex which).