الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
The northern part of the western desert represents Egypt’s essential oil production
and gas provenances, and agricultural projects in Egypt. Location of the study area limited
by the latitudes 29 to 3145` N and the longitudes 2430 to 29 E. The main aims of the
present work are to determining the surface and subsurface structures of the study area,
estimation the depth to the basement complex to delineate the topography of basement
rocks and the sedimentary cover as a potential source for hydrocarbon accumulation. In
order to achieve these aims, the present study depends mainly on the following data: a)
Reduce to pole magnetic map of the study area (scale 1:500,000) prepared by ”Western
Atlas International” for EGPC (1989), and b) geological map of Egypt (scale 1:500,000)
published by EGPC and CONOCO (1987) and few available borehole data (depths to
basement). The aeromagnetic data has been digitized and processed using the Geosoft
Oasis Montaj software. The qualitative interpretation of International Geodetic Reference
Formula (IGRF) map Butterworth lowpass and highpass filters, apparent magnetic
susceptibility map, analytical signal, source edge detection technique and finally tilt angle
derivative technique leads to that the sharp and high gradient magnetic anomalies can be
observed along the northwestern and central parts of the studied area and relatively gentle
gradient at the northeastern, southeastern, and western parts of the area. The sharp gradient
is possibly due to the presence of basement rocks of high magnetic susceptibility or at
shallow depth in both northwestern and central parts whereas, the gentle and low gradient,
may be reflect that the basement rocks are very deep at the southeastern and western parts
of the area.
The Quantitative interpretation of the radial average power spectrum technique
(RAPS) revealed that the average depth to shallow and deep magnetic sources (basement)
is about 1540 m and 5420 m, respectively, while the SPI technique showed that the
basement depth ranged from 2529 m to 5559 m over the study site. The obtained ED
anomalies range from 1065 to 4526 m in depth. It is noted that the depth increases
northward the study area. Results denote that northern and southeastern parts distinguish
deeper basement sources; the depth reaches 5559 m. The 3-D Voxi model interpretation
gives an idea about the best locations for underground water and hydrocarbon exploration.
ABSTRACTVII
The most important tectonic trends that have been identified from both surface and
subsurface (geophysical) data show substantial conformity and can be arranged in
descending significant order as follows; a) N-S, b) E-W, c) NNE-SSW, d) WNW-ESE, e)
ENE-WSW and NNW-SSE trends