Koras Gr
Period:
Stenian, Tonian
Age Interval:
latest Mesoproterozoic-early Neoproterozoin
Province:
Karoo Basin
Type Locality and Naming
Synonym:
Lithology and Thickness
Coarse clastics?
Lithology Pattern:
Coarse-grained sandstone
Relationships and Distribution
Lower contact
Waterberg/Soutpansberg Gr (conformable)
Upper contact
Gariep and Nosib Gr (conformable)
Regional extent
GeoJSON
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Fossils
Age
Age of 1090 Ma given by L.E. Kent, 1976, from quartz porphyry => given span here of ca. 1090 to 800 Ma (age on Nosib Gr)
Age Span:
Beginning stage:
Stenian
Fraction up in beginning stage:
0.55
Beginning date (Ma):
1,090.00
Ending stage:
Tonian
Fraction up in the ending stage:
0.7
Ending date (Ma):
804.00
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Rebecca Bobick (and Wen Du), modified from Kent, L.E., & Hugo, P.J., Aspects of the Revised South African Stratigraphic Classification and a Proposal for the Chronostratigraphic Subdivision of the Precambrian, American Association of Petroleum Geologists, 6, 367-377