Tiguentourine Fm
Period:
Triassic, Permian
Age Interval:
Asselian – Olenekian, Lb2
Province:
Libya
Type Locality and Naming
Column: Fezzan Basin
Synonym:
Lithology and Thickness
Represents the final regression event of the Carboniferous sedimentation. Reddish dolomitic claystones with interbedded gypsum and thin beds of limestone and dolomite. Some regions contain a massive bed of gypsum in the middle of the unit.
Lithology Pattern:
Clayey limestone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Dimbabah Fm.
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Zarzaitine Fm
Regional extent
GeoJSON
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Fossils
Asselian - Olenekian
Age
Age Span:
Beginning stage:
Asselian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
298.89
Ending stage:
Olenekian
Fraction up in the ending stage:
1.0
Ending date (Ma):
246.70
Depositional setting
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.