The geography and geology of south-eastern EgyptBall, John
Science
The geography and geology of south-eastern Egypt
Ball, John
Geology -- Egypt; Physical geography -- Egypt
=Gebel Shebakhit= is a group of high sandstone hills a few kilometres
north of Awamtib. It is drained north-westward by the broad Wadi
Shebakhit, a tributary of Wadi Timsah.
=Gebel Dagalai=, the next member of the sandstone hill-mass to
the north, has numerous peaks ranging from 670 to 712 metres above
sea. It is drained north-westward by the Wadi Dagalai, in which it
is said that water can sometimes be obtained.
PLATE XV.
[Illustration: MAP OF THE DISTRICT OF ABRAQ & ABU SAAFA
Ball. Geography & Geology of South-Eastern Egypt.
Photo-Metal-Process. Survey Dept. Cairo 1910. (60-190)]
=Gebel Um Khafur= is a group of high sandstone ridges overlooking
the sandy plain of Um Harba to the north. One of its higher ridges,
560 metres above sea-level, bears a triangulation station, marked by
a beacon, in latitude 23° 29′ 54″, longitude 34° 29′ 19″. A
remarkable feature of Gebel Um Khafur is the north-north-easterly dip
of its sandstone beds at an angle of about 13°, almost constant over
a large area, with probably step-faulting parallel to the strike of
the beds; owing to these features there are developed a series of
long ridges, with a flat dip slope northward and a steeper drop to
the south, while the drainage channels run along the lines of strike
and only break across the ridges at a few points. The drainage from
these channels, the chief of which is called the Wadi Um Khafur,
meanders northward over the plain to join a feeder of Wadi Garara.
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