Gebel Ahmar Sands Fm
Period:
Neogene
Age Interval:
Rupelian - Chattian, Eg2
Province:
Egypt general
Type Locality and Naming
Lithology and Thickness
Continental to fluviatile sands, flint, and gravel. Type section thickness appx. 50m. Sands and gravels are vividly colored. Fresh water snails.
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Middle Calcareous Division Gr (Maadi Fm)
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Moghra Fm
Regional extent
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[31.86,29.75],[31.78,30.81],[29.94,31.06],[28.94,30.67],[26.09,31.46],[25.07,31.39],[25.15,30.59],[24.83,30.15],[25.2,29.03],[25.16,22.11],[33.41,22.08],[33.28,25.22],[32.94,25.99],[33.37,26.19],[32.5,26.85],[32.37,27.94],[31.8,28.33],[31.86,29.75]]]]}}
Fossils
Silicified wood and geyser plugs. Vertebrate remains with associated volcanic rocks.
Age
Rupelian – Chattian
Age Span:
Beginning stage:
Rupelian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
33.90
Ending stage:
Chattian
Fraction up in the ending stage:
1.0
Ending date (Ma):
23.04
Depositional setting
Continental to fluviatile
Depositional pattern:  
Additional Information
Compiler:
Said, R. The Geology of Egypt, 1962 pg. 19-20, 138.