Saq Sandstone Fm
Period:
Ordovician, Cambrian
Age Interval:
Drumian – Dapingian, Sa (1,2,4)
Province:
Saudi Arabia
Type Locality and Naming
Column: Saudi Arabia Outcrop, Saudi Arabia Subsurface, NW Saudi Arabia
Synonym:
Lithology and Thickness
Brown to black weathering, white to buff, massive, commonly cross-bedded, medium to coarse-grained sandstone, locally considerable red color is present. A few thin red silty members occur locally. It is further divided into Sajir Member (Fine-grained sandstone in Upper Saq Sandstone Fm), and Risha Member (Coarse-grained sandstone in Lower Saq Sandstone Fm).
Lithology Pattern:
Fine-grained sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Burj Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Qasim Fm
Regional extent
GeoJSON
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Fossils
Age
Drumian – Dapingian
Age Span:
Beginning stage:
Drumian
Fraction up in beginning stage:
0.3
Beginning date (Ma):
503.30
Ending stage:
Dapingian
Fraction up in the ending stage:
1.0
Ending date (Ma):
469.42
Depositional setting
Depositional pattern:
Additional Information
Compiler:
From Middle East Geological Timescale 2008 Al-Husseini, Journal of Middle East Petroleum Geosciences v 13, no. 4