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Compiled by: Jacques LeBlanc (2022), Stratigraphic Lexicon: The Sedimentary Formations of The Republic of Niger, Africa. Colnes Publishing (Tallin, Estonia), 365 pp. For more information see "About"

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Tindirenen Formation

Tindirenen Fm

Period:

Devonian, Carboniferous

Age Interval:

Upper Devonian(?) or Lower Carboniferous(?) (1)

Province:
Iullemmeden Basin - Tim Mersoï Sub-basin

Type Locality and Naming

In drillholes of the DASA graben. This seems to be a recently assigned Formation name (post-2010? or 2015?) for a unit found only deep within the DASA graben of the Tim Mersoï Sub-Basin, which was highlighted by the drilling programs conducted for the search of uranium. Group: Possibly (?) the Terada Gr

References: Mamadou, 2016; CSA Global, 2017 & 2019; Mamadou et al., 2020; Sani et al., 2021a, 2021b.

Synonym: Tinderenen Formation (misspelling)

Lithology and Thickness

Alternating medium and fine-grained sandstones with blackish/greyish argillite lenses; micro-conglomerate at the base with silica cement; horizontal strata. Unknown thickness.

[Figure. The deep part of the stratigraphic column in the DASA graben (Modified from Mamadou, 2016). A similar column is also presented in CSA Global (2017, 2019).]

Lithology Pattern:

Relationships and Distribution

Lower contact

According to the original authors, the Tindirenen Fm is assigned a level between the Teragh Fm and Farrazekat Fm. However, the correct stratigraphic level is ambiguous and unlike what is presented in the present lexicon since the referenced authors place the Farrazekat Fm younger than the Teragh Fm (see Figure); the opposite is true. These same authors also include it within the Terada Gr. More information is needed to assign the correct age to this unit and to ascertain the names of the underlying and overlying formations.

Upper contact

See discussion under "Lower Contact"

Regional extent

Found only deep within the DASA graben of the Tim Mersoï Sub-Basin. [NOTE: Omitted GeoJSON, due to uncertainty about relationships.]

GeoJSON

null

Fossils

Unknown

Age

Upper Devonian(?) or Lower Carboniferous(?).See discussion under "Lower Contact". [NOTE: Put here as uppermost Famennian to lowest Tournaisian; but Omitted on user-interface strat column, due to uncertainty about relationships.]

Age Span:

Beginning stage:

Famennian

Fraction up in beginning stage:

0.8

Beginning date (Ma):

361.66

Ending stage:

Tournaisian

Fraction up in the ending stage:

0.2

Ending date (Ma):

356.79

Depositional setting

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)