Cenozoic

Cretaceous

Jurassic

Triassic

Permian

Paleozoic

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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Totomaye Formation

Totomaye Fm

Period:

Cretaceous, Paleogene

Age Interval:

Upper Cretaceous (Upper Maastrichtian) to Paleogene (Paleocene) (9)

Province:
Djado Basin

Type Locality and Naming

Faure, 1966; Named for Mount Totomaye in the Djado Basin known for its archeological sites (Ferhat et al., 1992).

References: Faure, 1966; Ferhat et al., 1992.

Equivalent(s): Emi-Bao Fm (Fig. 7-146). Faure (1966, p. 356) also notes: “Among the different series that I have studied in Niger, it is with the sandstones at the top of the plateau south of Djado (Totomaye, north of the Bilma basin) that the sandstones of Koutous present the most marked analogies.”

Lithology and Thickness

Coarse kaolinitic sandstone with cross-bedded stratifications, 90 m thick (Fig. 1). Its facies are similar to the Emi Bao Fm (Fig. 2) but with coarser grains.

[Figure 1. The Totomaye Fm at Mount Totomaye (Source: Faure, 1966, p. 267).]

[Figure 2. Disposition of the Emi Bao Fm and Totomaye Fm in the extreme NE of Niger (Source: Faure, 1966).]

Lithology Pattern:

Coarse-grained sandstone

Relationships and Distribution

Lower contact

Underlying Unit: Faure (1966) does not mention any Formation name; however, he states that the formation underlying the Totomaye Fm on Mount Totomaye is Visean in age (Fig. 2) which would most likely make it the Marar Fm.

Upper contact

None

Regional extent

GeoJSON

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Fossils

Age

Upper Cretaceous (Upper Maastrichtian) to Paleogene (Paleocene)

Age Span:

Beginning stage:

Maastrichtian

Fraction up in beginning stage:

0.5

Beginning date (Ma):

69.11

Ending stage:

Thanetian

Fraction up in the ending stage:

1.0

Ending date (Ma):

56.00

Depositional setting

Continental

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)