Prior to the formation of the Red Sea the northeastern Afro/Arabian continent had low relief
and was largely below sea level from the Late Cretaceous to the early Oligocene. The …

The Egyptian basement rocks are gathered into three major rock groups, viz. Meatiq Group
(oldest), Abu Ziran Group and Hammamat Group (youngest); the last two groups belong to …

The structural setting of major alkaline provinces in Africa are reviewed and compared with
examples from Siberia, Europe, southern Greenland, and North America. It is concluded that …

Detailed surface and subsurface structural data indicate that the Mesozoic-Cenozoic
deformation history of Egypt witnessed four main phases of deformation related to the …

This chapter reviews four types of Phanerozoic minor volcanics and intrusives of the Arabian-
Nubian Shield (ANS). Outlines of this chapter are: alkaline ring complexes including …

Over 625 igneous complexes throughout Africa and Arabia have been selected and
classified on the basis of petrographic association and chronology into six broad age groups …

New K-Ar age determinations show that the development of Southern Afar since 14 Ma ago
involved five stages of tectonism and volcanism at 14-11, 11-10, 9-7, 5-4 and post-1.6 Ma …

New geochemical, isotopic, and geochronological data and interpretations are presented for
late Neoproterozoic intrusive carbonates and related rocks of southern Sinai, Egypt …

An anorogenic petrographic province containing nearly 100 alkaline ring complexes
extends across Sudan. These anorogenic complexes are distinct from late-orogenic granite …

Over the last two decades, some fifteen alkaline ring complexes were identified, mapped
and studied by the authors. These occur within the area covered by the Late Proterozoic …