Mossouva Fm

Period:

Neoproterozoic

Age Interval:

Late Tonian

Province:
West Congo Margin Basins

Type Locality and Naming

Lithology and Thickness

Lithology Pattern:

Sandstone

Relationships and Distribution

Lower contact

Rests on the meta-arkosiic (sandstones) of the Mvouti Fm (upper formation of the Sounda Gr.

Upper contact

Overlain by the glacial (Sturtian-age) deposits of the Lower Diamictite Fm (Lower Tillite Fm)

Regional extent

Niari Basin (Gabon) and Mayombe Chain (RC and Gabon)

GeoJSON

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Fossils

Age

Beginning of basin fill at 870 Ma (base of Mossouva Fm) = 45% up in Tonian; until onset of Sturtian glacial (Lower Diamictite Fm) at base of Cryogenian

Age Span:

Beginning stage:

Tonian

Fraction up in beginning stage:

0.45

Beginning date (Ma):

874.00

Ending stage:

Cryogenian

Fraction up in the ending stage:

0.00

Ending date (Ma):

720.00

Depositional setting

Basin fill of a passive margin

Depositional pattern:

Additional Information

Compiler:

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

Geology and Resource Potential of the Congo Basin by Maarten J. de Wit, François Guillocheau and Michiel C.J. de Wit , Published Springer-Verlag Berlin Heidelberg 2015; DOI 10.1007/978-3-642-29482-2

Fullgraf, T., Callec, Y., et al. (2024) Structural architecture and metamorphism of the Mayombe Chain and Niari Basin (West Congo Belt) in Congo Brazzaville. Jour. Afr. Earth Sci., 220: article 105369.