الفهرس 
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Abstract
G. Nasb - Aluba area covers about 370 Km2 of the Arabo - Nubian Shield at the southern part of the Eastern Desert of Egypt. It is delineated by the following coordinates : Longitudes 33 50 00 -----34 00 00 E Latitudes 22 40 00 ----- 22 50 00 N On the basis of field relations and petrography the basement rocks are chronologically classified into the following rock types, following El - Gaby et al. (1990): I. pre - pan African Rocks 1.Quartzo - feldspathic biotite geneise. 2. Staurolite - quartzite. II. pan - African Assemblage A. Ophiolites : a. Serpentinites b. Peridotite cumulates i. Harzburgite ii. Lherzolite iii. Wehrlite iv. Pyroxenite c. Metagabbros 2. Island Arc Assemblage a. Basic metavolcanics * Metabaslats b. Metasediments : i. Foliated psammo - pelitic mica schist. ii. Associated metamorphosed dyke - like bodies and veins. * Magnetite - tremolite - chlorite schist. *Talc schist. c. Amphibolite: i. Banded quartzo - feldspathic amphibolite. ii. Garnet amphibolite.