Cenozoic

Cretaceous

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Dange Formation

Dange Fm

Period:

Paleogene

Age Interval:

lower Paleogene

Province:
Sokoto Basin (S. Iullemmeden Basin)

Type Locality and Naming

The type section of the Dange Formation is located about 28km south of Sokoto, along Sokoto – Gusau road (Nwajide, 2013). Lower formation in the Sokoto Gr.

Reference section: Reyment,1965; Adeleye,1975; Kogbe,1976; Dessauvagie, 1975; Petters, 1978; Offodile, 1980; Whiteman, 1982; Benkhelil,1989; Okosun, 1992; Guiraud, 1993; Akandeet al., 1998; Zaborskiet al., 1998;Jauroet al., 2007 ; Obaje,2009; Nwajide, 2013

[Fig. 1. Stratigraphic successions in the Nigerian sector of the lullummeden Basin (Sokoto Basin)]

Lithology and Thickness

The lithological components of this formation are mostly shale and limestone with the shale having horizons of fibrous gypsum with abundant calcium phosphate nodules (Nwajide, 2013). The thickness of the formation is estimated to be about 10-15m (Petters, 1978a; Kogbe, 1989).

Lithology Pattern:

Gypsiferous claystone

Relationships and Distribution

Lower contact

Unconformably onto the Wurno Fm of the Rima Gr

Upper contact

Overlies the Kalambaina Fm

Regional extent

Iullemmeden Basin

GeoJSON

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Fossils

Sokoto Gr has Foraminifera, ostracods, Fossil vertebrates, molluscs, echinoids, corals, nautiloids, gastropods, lamellibranchs, Fish teeth and scales, bivalve moulds, ostracods

Age

lower Paleocene (assumed to be the lower stage)

Age Span:

Beginning stage:

Danian

Fraction up in beginning stage:

0.0

Beginning date (Ma):

66.04

Ending stage:

Danian

Fraction up in the ending stage:

1.0

Ending date (Ma):

61.66

Depositional setting

The underlying Kalambaina Fm showed a shallow, nearshore, open marine (Obiosioet al., 1998; Nwajide, 2013) and followed by a marginal marine environment in Gamba Fm.

Depositional pattern:

Additional Information

Compiler:

Prof. E. O. Obiosio, Solomon Joshua Avong and Henry Nasir Suleiman (2024)- Stratigraphic Lexicon compiled from the following books:

Nigeria: Its Petroleum Geology, Resources and Potential, by Arthur Whiteman, 1982; (Volume 1) Published by Graham and Trotman Ltd.

A review of the Cretaceous System in Nigeria by P. M. Zaborski (1998) In Africa Geoscience Review, Vol.5, No.4, pp385-483

Geology and Mineral Resources of Nigeria by Nuhu George Obaje, Published by Springer-Verlag Berlin Heidelberg 2009; http://www.springer.com/series/772

Geology of Nigeria Sedimentary Basins, Nwajide C. S., 2013; Published by CSS Bookshops Limited, Lagos Nigeria.