Nylstroom Sub Gr
Period:
Orosirian, Statherian
Age Interval:
late Orosirian – middle Statherian
Province:
Karoo Basin
Type Locality and Naming
Synonym:
Lithology and Thickness
Sandstone and greywacke
Lithology Pattern:
Sandstone
Relationships and Distribution
Lower contact
Vredefort IMPACT Fm (unconformable)
Upper contact
Matlabas Sub Gr (conformable)
Regional extent
GeoJSON
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Fossils
Age
Base is 1900-ish for space, no control on ages on diagram => ca. 1900 to 1630 Ma
Age Span:
Beginning stage:
Orosirian
Fraction up in beginning stage:
0.6
Beginning date (Ma):
1,900.00
Ending stage:
Statherian
Fraction up in the ending stage:
0.85
Ending date (Ma):
1,630.00
Depositional setting
Depositional pattern:
Additional Information
Compiler:
Rebecca Bobick (and Wen Du), modified from Walraven, F., Armstrong, R.A., and Kruger, F.J., A chronostratigraphic framework for the north-central Kaapvaal craton, the Bushveld Complex and the Vredefort structure, Tectonophysics, 171 (1990), 23-48.