الفهرس 
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Abstract
Remote sensing enhancement techniques applied in the current study based on
available ETM+ landsat image data and Egyptsat image integrated with field work
aided by previous lithological mapping to present new detailed lithologic and
structural map of the area.
Band ratio images (3/5, 3/1, 5/7) Sabins (1999) and (7/5, 5/4, 3/1) Gad and
Kusky (2006) and Egyptsat color composite used to discriminate between different
rock units in study area. Band ratio images (3/5, 3/1, 5/7), (7/5, 5/4, 3/1) and Egyptsat
color composite used to detect two major sinistral strike-slip which trending N-S
(Umm Battat-Kadabora El Hamra and Kabb El Rakab faults). The false color
composite ratio images 3/5, 3/1, 5/7 with field check used to map thrust faults which
control the distribution of ophiolite sequences.
The present work also aims to study in detail the structure of Wadi Beririq/Wadi
Mubarak area in the Central Eastern Desert to determine the deformation phases. The
field studies revealed that the rocks in the Wadi Beririq /Wadi Mubarak area can be
divided into:
I- Dismembered ophiolites
II- Arc Assemblage
III- Syn-tectonic granite
IV- Post-tectonic gabbros
V- Post-tectonic granite
The Wadi Beririq/Wadi Mubarak belt is characterized by a prevalence of NEand
ENE trending tectonic fabrics and mainly NW and NNW-oriented thrusts.
Based on the analysis of measured structural data, the area exhibits five major
phases of deformation. These deformational phases are:
The first deformational event (D1) is represented by large scale folding and
thrusting mainly top-to-the-north-northwest.
Major fold axes extend parallel to the major thrust faults (NE-SW to ENEWSW)
and slightly plunging towards NE as Kadabora El Zarga syncline and
anticline, Umm Battat syncline and anticline fold and Talet Gamra syncline.
Study area is dissected and deformed by a series of imbricate thrust sheets
forming a typical tectonic mélange. The tectonic mélange contains many isolated
masses of ophiolitic metaspilitic pillow lavas, metabasalts and serpentinites. These
imbricate thrust sheets trending mainly NE-SW and dipping mainly to SE.
The second deformational event (D2) is represented by Beririq strike slip faults
(NE-SW) controlling the main trend of Wadi Beririq and characterized by dextral
sense of movements.
Kinematic indicators along Wadi Beririq shear zone are consistent with oblique
top-to-the-north-northwest shearing. The deformation is also partitioned into a subhorizontal
dextral slip and top-to-the NNW component. The kinematics of this shear
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zone is mainly controlled by distributed transpressional wrenching along Wadi
Beririq.
The third deformation phase (D3) is represented by NW-SE directed extension
accompanied by several mesoscopic structures.
The fourth deformation phase (D4) is represented by major strike-slip faults
trending N-S. The sinistral strike-slip faults occur in the north eastern part of study
area as Umm Rus fault, at central part as Umm Battat-Kadabora El Hamra fault, and
in the western part as Kabb El Rakab fault.
The final deformation phase (D5) is represented by N-S basic dyke swarms. The
arrangement and characters of the N-S dyke swarm indicates that the crust was
actively extending in E-W direction.