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Department of Geology, University of Kuwait

Abstract.

The granitic rocks north of Wadi Gemal in the south Eastern Desert of Egypt consist of gneissose adamellites intruded by pink granites and granodiorite porphyries and belong an a whole to the Younger Granitoids of the basement complex. The petrographical and petrochemical characteristics of the granitic rocks are described. The granitic groups are shown to have distinct differences in both texture and chemistry. The pink granites are assumed to have been derived from a residual melt formed by fractional crystallization of the parent adamellite magma, while the granodiorite porphyries were most probably generated independently from a separate magma.