Aoulingen Fm
Period:
Carboniferous
Age Interval:
Carboniferous (Mississippian – Upper Visean) (1a)
Province:
Iullemmeden Basin - Tim Mersoï Sub-basin
Type Locality and Naming
References: Valsardieu, 1971, Fabre et al., 1983; Coquel et al., 1995; CSA Global, 2007, 2019.
Synonym: Silts à plantes d’Aoulingen; Equivalent(s): The siltstones and sandstones of the Aoulingen Fm pass laterally to the north into the marine Talak Fm.
Lithology and Thickness
Siltstones and sandstones. Its thickness is 50 to 110 m.
Lithology Pattern:
Siltstone
Relationships and Distribution
Lower contact
Underlying unit is the Teragh Fm
Upper contact
Overlying unit is the Guezouman Fm
Regional extent
Iullemmeden Basin - Tim Mersoï Sub-Basin
GeoJSON
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Fossils
Age
Since it is equivalent to the Talak Fm, a Carboniferous (Mississippian – Upper Visean) age is assigned; Coquel et al., 1995.
Age Span:
Beginning stage:
Visean
Fraction up in beginning stage:
0.5
Beginning date (Ma):
338.54
Ending stage:
Visean
Fraction up in the ending stage:
0.65
Ending date (Ma):
336.08
Depositional setting
Marine
Depositional pattern:
Additional Information
Compiler:
Jacques LeBlanc (2022), Stratigraphic Lexicon: The Sedimentary Formations of The Republic of Niger, Africa. Colnes Publishing (Tallin, Estonia), 365 pp. https://doi.org/10.47909/978-9916-9760-6-7 (or via https://sites.google.com/site/leblancjacques)