الفهرس 
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Abstract
Atalla area is located at the northwest of El-Fawakhir granitic pluton about 9 km from the Fawakhir mine and about 15 km of the El Sid gold mine at central Eastern Desert. It is accessible from Bir Fawakhir by a good gravel road along Wadi Atallal, which joins Wadi Hammamat at Bir Fawakhir. This area is occupied by a sequence of basement rocks, mostly similar to the Fawakhir area.
Structural measurements of the study area (fault planes, fractures, quartz veins and Atalla shear zone) showed that Atalla area is controlled by a regional NW-SE trending strike-slip shear system forming the eastern and the western boundary of Atalla granitic intrusion and they are well exposed for few tens of kilometers in length. This shear system was stretched from Hamama in the NW to Bir Umm El-Fawakhir and El-Sid in the SE (Fig. 2.2). All the lithological rock units of the studied area are dissected by the shear system except the granitic pluton, because it is not deformed and is therefore, younger than the shearing tectonics.
Atalla granitic intrusion is frequently cross-cut by quartz veins and veinlets. These are always the target of gold mineralization. The mineralization study shows that the Atalla gold deposit is related to quartz veins accommodated in NE-trend (brittle >> ductile) shear zones. The latter likely represent high order displays or reactivations of the NNW-SSE Atalla shear zone. The normal faults in the study area comprise three major trends; the E–W, N–S and NE–SW faults. It manifests NW-SE extension pertaining to an orogen parallel to crustal extension and post date NW thrusting. Boundinaged quartz veins manifest extension and related normal faulting at the Atalla area.