Zadinian Gr
Period:
Tonian
Age Interval:
912–920 Ma
Province:
West Congo Basin / Bas-Congo region, DRC
Type Locality and Naming
Synonym:
Reference section:
Lithology and Thickness
metabasalts, metaclastites, metarhyolites. Early Neoproterozoic magmatic events marking initial continental rifting of Rodinia. Thickness: < 1500 m.
Lithology Pattern:
Metavolcanics
Relationships and Distribution
Lower contact
Underlain by basement (Zadinian/Mayumbian groups or Archean/Palaeoproterozoic basement).
Upper contact
Overlain by the Mayumbian Fm.
Regional extent
West Congo Belt (DRC, Republic of Congo, Gabon, NW Angola).
GeoJSON
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Fossils
Age
Anchor age: ca. 1000–920 Ma (Tack et al., 2001)
Age Span:
Beginning stage:
Tonian
Fraction up in beginning stage:
0.31
Beginning date (Ma):
913.20
Ending stage:
Tonian
Fraction up in the ending stage:
0.29
Ending date (Ma):
918.80
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.