Mousseden Fm
Period:
Jurassic
Age Interval:
Lower Jurassic (1)
Province:
Iullemmeden Basin - Tim Mersoï Sub-basin
Type Locality and Naming
Group/Subgroup: Agadez, Goufat
References: Valsardieu, 1971; Fabre et al., 1983; Moody, 1997; Sani et al., 2020, 2021a, 2021b.
Synonym: Analcimolites de Mousseden; “Arkoses de Karafou” (Valsardieu, 1971).
Lithology and Thickness
Shales with lenses of arkosic sandstones and grits. 0 to 30 m thick.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
When present, it is underlain by the Teloua Fm (Teloua 3 Mbr)
Upper contact
When present, it is overlain by the Tchirezrine 1 Mbr of the Tchirezrine Fm.
Regional extent
GeoJSON
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Fossils
Age
Lower Jurassic
Age Span:
Beginning stage:
Pliensbachian
Fraction up in beginning stage:
0.0
Beginning date (Ma):
192.90
Ending stage:
Pliensbachian
Fraction up in the ending stage:
1.0
Ending date (Ma):
184.20
Depositional setting
Continental, fluvio-lacustrine
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)