الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
At the end of the Late Eocene there must have been a general rise of land causing a northward shift of the shorline of the Mediterranean Geosyncline upto the latitude of the Fayoum Province and this action continued during the Oligocene Period, where the shor- line receded yet farther north. This explains the almost continental facies characteristic to the Oligocene deposits in Egypt. However, in the Fayoum Province fluviatile sands and gravels overlie conformably the Upper Eocene beds, contrasting in this respect the presence of an angular unconformity in the northern part of the Western Desert.
The surface Oligocene sediments of Egypt are mainly composed of continental facies and volcanic flow occupying about 16000 km2 (1.6% of the Egyption surface) usually unconformably overlying the Eocene strata covering the area between Bahariya and Fayoum in the Western Desert. Along the Nile valley, the Oligocene strata appear to the east of El-Fashn and Beni Suef. They are also recorded throughout the Cairo-Suez district
represented by gravels sands and sandstones
1
devoid
of fossils except for silicified wood fragments. In Sinai the Oligocene sands are exposed over the Tanka
”
beds (Uppermost Eocene) and east of Sudr on the eastern.