الفهرس 
english titelOnly 14 pages are availabe for public view
 |  | from | 211 |  |  |
| | | from | 211 | | |
Abstract
The area under investigation is boundded by longitudes 31 15′ to 32 15 ′ E and, latitudes 26 00 ′ to 27 00 ′ N and generally covere most of the area from Wadi Bir Al Ain in north to Wadi Qassab in south east of Sohag, Egypt. The stratigraphic units recognized in the studied area range in age from the Eocene to Quaternary and comprise twelve rock units: Thebes Formation, Drunka Formation, katkut Formation, Abu Retag Formation, Madmoud Formation, Issawia Formation, Armant Formation, Qena Formation, Abbasia Formation, Dandara Formation, El-Gir Formation and Recent Wadi deposits. 1-The lower Eocene sequence includes the limestone of Thebes and Drunka formations forming the escarpments bordering the Nile Valley in the eastern and the western sides. 2-The late Oligocene - Miocene sequence consists of two formations:- a-The katkut Formation with coarse clastics sediments that overlie the Eocene sequence, varying in composition from sandstone, conglomerates and conglomeratic sandstone. b- Abu Retag Formation described by the mottled reddish brown coarse clastics that crop along the lower slopes of the western Eocene limestone plateau. 3- The Pliocene- Quaternary sequence includes: a-Madmoud Formation composed of fine siliclastics (siltstones, claystones and fine sandstones) and deposited in floodplain environments. The exposed thickness about 11.5 m at Wadi El Kiman.
SUMMARY AND CONCLUSION
162
b-Issawia Formation consistes of breccias and conglomerates deposited in lacustrines and derived from the Eocene blocks. The type section with thickness up to 35 m. c-Armant Formation characterized by lacustrine terrigenous sediments, lacustrine carbonate sediments and mixed clastic carbonate sediments. It attains a maximum thickness about 20 m d-Qena Formation: composed of channeled coarse to medium grained sandstones with thickness about 20 m. e-Abbasia Formation with coarse terrigenous sediments (conglomerates of igneous clasts quartzite and cherts embedded in red sandy matrix) varying in color from yellowish grey to grayish white, it′s thickness reaches about 10 m thick. f-Dandara Formation consists of dark brown clays, friable calcareous sandy silt bed overlain by sand bed with a maximum thickness of 12 m. g-El-Gir Formation formed of coarse clastics and mixed clastic