ABSTRACT
The Red Sea Hills of northeast Sudan form a distinct physiographic province up to 200 km wide. They form part of the Nubian Shield that extends into Egypt, Eritrea and southeastern Sudan. It is unanimously agreed that the Arabian-Nubian Shield (ANS) evolved in an ensimatic model during the late Proterozoic when island arc rock sequences collided and accreted as tectonic terranes separated by ophiolite complexes. Many subdivisions of the Red Sea Hills basement groups were proposed by earlier geologists giving the rock groups geographic names where they were first described. In this study, genetic terms, namely, high-grade shelf metasediments, low-grade volcanogenic metasediments, Nubian-arc system metavolcanics, flysch- and molasse-like sediments are proposed to replace the earlier locality names. Hence, it is hoped that a similar approach will be adopted by geologists in the Arabian Shield and eastern Egypt in order to facilitate plausible correlations across the ANS.
