Taouratine Fm
Period:
Jurassic
Age Interval:
Aalenian – Berriasian, Lb2
Province:
Libya
Type Locality and Naming
Column: Fezzan Basin
Synonym:
Lithology and Thickness
Shale overlain by sandstone. Composed of three units: a lower layer of alternating sandy claystones and ferruginous sandstones with plant and vertebrate fossils, a middle sandy dolomitic limestone layer, and an upper layer of claystones, friable sandstones, and occasional limestones.
Lithology Pattern:
Sandy_claystone
Relationships and Distribution
Lower contact
Regionally, the schematic strat column indicates the next older unit as Zarzaitine Fm
Upper contact
Regionally, the schematic strat column indicates the next younger unit as Nubian (Sarir, Calanscio) Sandstone Fm
Regional extent
GeoJSON
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Fossils
Age
Aalenian – Berriasian. USGS chart places this formation at the base of the Dogger stage in the Middle Jurassic.
Age Span:
Beginning stage:
Aalenian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
174.70
Ending stage:
Berriasian
Fraction up in the ending stage:
1.0
Ending date (Ma):
137.70
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.