Vampa Fm
Period:
Ediacaran
Age Interval:
562–570 Ma
Province:
West Congo Basin / Bas-Congo region, DRC
Type Locality and Naming
Synonym:
Reference section:
Lithology and Thickness
reddish to greenish shales, siltstone, feldspathic quartzites with carbonate sandstone and conglomerate beds or layers Thickness: 410 m.
Lithology Pattern:
Sandy claystone
Relationships and Distribution
Lower contact
Underlain by the Bangu and Niari Conglomerate Fm.
Upper contact
Overlain by the Kubuzi Fm.
Regional extent
West Congo Belt (DRC, Republic of Congo, Gabon, NW Angola).
GeoJSON
{"type":"Feature","geometry":{"type":"MultiPolygon","coordinates":[[[[10.77,-1.12],[10.9,-1.26],[10.96,-1.41],[10.97,-1.63],[10.99,-1.85],[11.12,-2.02],[11.48,-2.31],[11.78,-2.6],[12.05,-2.82],[12.39,-3.13],[12.86,-3.54],[13.07,-3.66],[13.34,-3.84],[13.56,-3.98],[13.89,-4.3],[14.16,-4.74],[14.24,-5.01],[14.26,-5.32],[14.31,-5.76],[14.41,-5.98],[14.57,-6.31],[14.78,-6.6],[14.99,-6.9],[15.23,-7.22],[15.58,-7.85],[15.64,-8.08],[15.62,-8.5],[15.5,-8.7],[15.19,-8.87],[14.89,-8.84],[14.67,-8.73],[14.55,-8.45],[14.33,-8.11],[14.16,-7.75],[13.95,-7.59],[13.75,-7.36],[13.69,-6.93],[13.68,-6.68],[13.65,-6.33],[13.51,-6.04],[13.39,-5.67],[13.3,-5.34],[13.15,-5.06],[12.98,-4.81],[12.83,-4.72],[12.61,-4.59],[12.44,-4.39],[12.26,-4.27],[11.96,-4.02],[11.8,-3.76],[11.59,-3.65],[11.32,-3.51],[11.21,-3.36],[11.37,-3.32],[11.51,-3.21],[11.24,-2.97],[11.07,-2.82],[10.87,-2.52],[10.71,-2.14],[10.66,-1.92],[10.64,-1.57],[10.64,-1.29],[10.73,-1.18],[10.73,-1.18],[10.73,-1.18],[10.77,-1.16],[10.77,-1.16],[10.77,-1.12]]]]}}
Fossils
Age
Interpolated by thickness (410m of 1000m) between 550.0–571.3 Ma
Age Span:
Beginning stage:
Ediacaran
Fraction up in beginning stage:
0.76
Beginning date (Ma):
561.89
Ending stage:
Ediacaran
Fraction up in the ending stage:
0.67
Ending date (Ma):
570.55
Depositional setting
Siliciclastic proximal marine deposition interrupted by some continental episodes; late-orogenic molasse-type foreland basin (Tack et al., 2001; Frimmel et al., 2006).
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.