ABSTRACT
The Sa’al Group in the Sinai Peninsula is a late Proterozoic Pan-African orogenic volcano-sedimentary complex constructed of ENE-WSW trending mafic to felsic arc-type lavas and volcaniclastic rocks, flanking cannibalistic sediments and a mafic intrusive complex. Geochemically the lavas generally show calc-alkaline and high-K calc-alkaline trends compatible with ensialic island arc magmatism. The group deformed during four tectono-metamorphic events culminating in NW-directed thrusting. Metamorphism reached chloritoidal facies in rocks of appropriate chemical composition. During final deformation stages the complex, along with some early granitoids, was faulted and tectonized along a conjugate set of NW-SE and NE-SW trending faults and ductile shear zones. The latter are interpreted to comprise the northernmost manifestation of the NW-SE trending transcontinental Najd Fault System.
