Mineralogical, Geochemical and Radiometric studies on the granitic rocks of Wadi Sabbagh area, South Sinai, Egypt.

Abstract

Wadi Sabbagh area is situated at southern part of Sinai Peninsula, occupies about 469 Km2, embodied by moderate and high relief mountains of rugged topography such as Gabal Yahmid El Kebly (2274 m), Gabal Sabbagh (2266 m), Gabal Haleifiya (2247m), Gabal Umm Adawi (1740 m), Gabal Gindoll, Gabal Um Ikhlas. Gabal Umm Sulb, Gabal Homra and Gabal Barakat. The area dissected by a number of wadis such as Wadi Lithi, Wadi Abo Sommar, Wadi Gargar, Wadi Umm Adawi, Wadi Yahmid, Wadi Sabbagh, Wadi Haleifiya, Wadi Umm Meter, Wadi Umm Hamatta, Wadi Mahsh and Wadi Gindoll. The detailed field studies of the exposed rock units revealed that Wadi Sabbagh area is covered mainly by granitoids and metamorphic rocks. According to field observations and relationships between the rock unites, aerial photographs, landsat images as well as petrographic investigations, it can be arranged the rock unites chronologically, beginning with the oldest as metamorphic rocks (gneisses and migmatites & metasediments), older granitoids (tonalite&granodiorite), younger granites (monzogranite, syenogranite and alkaline granite), pegmatites and dykes (microgranite porphyry, granophyre, porphyritic