The stratigraphic sedimentary sequence of the study area (7500 Km2) commenced in Cambrian period above a
weathering zone developed from the underlying Precambrian basement rocks. The weathering products can be divided into
two lithotopes, glacial weathering soil formed during cold climate in Paleozoic times (Cambrian to Silurian) and lateritic
weathering soil formed in hot hummed climate during Jurassic and Cretaceous times. The stratigraphic sequence is
lithologically classified into three-fold vertical-groups; from base upwards these are, the Pre Late-Jurassic "Infra Nubia
Group", the Late Jurassic-Maastrichtian "Nubia Group", and the Campanian-Paleocene to Recent "Ultra Nubia Group". The
composite stratigraphic section includes nine formations separated with five unconformity planes, from base upwards these
are, Araba Formation (Cambrian-Ordovician), Gilf Formation (Upper Carboniferous), Abu Ballas Formation (Upper Jurassic -
Neocomian), Taref Sandstone and Quseir Clastics (Torronian-Santonian), Dawi Formation (Campanian-Maastrichtian), and
the Maastrichtian-Paleocene Dakhla Formation, Kurkur Formation, and Garra Formation.
The area has been subjected to peneplanation since the early Cambrian time. Therefore, the palaeo-relief of the
basement rocks prior to deposition of the sedimentary sequence is not quit clear, but fault downthrown value attaining 172
meter is recorded. Palaeocurrent studies and geodynamic investigations together with correlation charts of the studied 31
columnar sections indicated a reversal of the Paleozoic southward-paleoslope of the Eastern Desert basin. Northward blocktilting
occur prior to deposition of Abu Ballas Formation and the coevals Six-Hill Formation of Jurassic-Early Cretaceous
time. Five major fault-zones are detected in the study area namely, the N-S Pan-African trending Nile-River fault zone, the NW
trending Wadi El-Hudi fault zone of Carboniferous age, and the Middle Triassic Guinean-Nubian lineaments including three
major fault zones running in NE (80±5º ) direction, cross-cutting the Nile River, forming Wadi Abu Subera fault zone, the 1st
Nile-Cataract fault zone, and Khour Kalabsha fault zone.
The present paper provides a generalized stratigraphic section of the study area and modulates the interrelationship
between sequence of tectonic events and sedimentation of the different stratigraphic formations