S0 Fm
Period:
Tonian
Age Interval:
836–850 Ma
Province:
West Congo Basin / Bas-Congo region, DRC
Type Locality and Naming
Synonym:
Reference section:
Lithology and Thickness
Basal Conglomerate: clayey or arkosic supported conglomerate, with interbedded siliceous shale and arkose Thickness: ≤ 4.5 m.
Lithology Pattern:
Aus conglomerate
Relationships and Distribution
Lower contact
Underlain by the Mayumbian Fm.
Upper contact
Overlain by the S1 Fm.
Regional extent
West Congo Belt (DRC, Republic of Congo, Gabon, NW Angola).
GeoJSON
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Fossils
Age
Anchor age: base of Sansikwa (~850 Ma). Youngest detrital zircon ages ~923–960 Ma.
Age Span:
Beginning stage:
Tonian
Fraction up in beginning stage:
0.59
Beginning date (Ma):
834.80
Ending stage:
Tonian
Fraction up in the ending stage:
0.54
Ending date (Ma):
848.80
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Cailteux, J.L.H., Delpomdor, F.R.A., & Ngoie Ndobani, J.-P. (2015). The Neoproterozoic West-Congo 'Schisto-Calcaire' sedimentary succession from the Bas-Congo region (Democratic Republic of the Congo) in the frame of regional tentative correlations. Geologica Belgica, 18/2-4, 126–146.