Abu Shaybah Fm
Period:
Triassic
Age Interval:
Carnian – Rhaetian, Lb1
Province:
Libya
Type Locality and Naming
Column: Tripolitania and Sirte Basin
Synonym: Bu Sceba (previously named)
Lithology and Thickness
Comprised of variegated fine to coarse-grained sandstone with a few dolomitic horizons toward the top.
Lithology Pattern:
Clayey sandstone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Azizia Limestone Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Bu (Abu) Ghaylan Limestone Fm
Regional extent
GeoJSON
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Fossils
Age
USGS chart places this formation at the base of the Keuper stage in the late Triassic. Carnian - Rhaetian
Age Span:
Beginning stage:
Carnian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
237.00
Ending stage:
Rhaetian
Fraction up in the ending stage:
1.0
Ending date (Ma):
201.36
Depositional setting
Deposited in increasing lagoonal/marine environment.
Depositional pattern:
Additional Information
Compiler:
Chart derived from: USGS Correlation Chart and Columnar Section for Rocks in Libya, 1963. Descriptions from: Hallet, Don: Petroleum Geology of Libya, 2002.