Dominion Fm
Period:
Mesoarchean
Age Interval:
mid-Mesoarchean (3050 Ma)
Province:
Karoo Basin
Type Locality and Naming
Synonym:
Lithology and Thickness
Base consists of Dominion Reef, which contains uranium rich, gold bearing conglomerates. Younger formations consist of andesite-rhyolites.
Lithology Pattern:
Volcanics
Relationships and Distribution
Lower contact
unknown
Upper contact
Regional extent
GeoJSON
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Fossils
Age
Radiometric dating from F. Walraven, 1990 = 3060 Ma. Shown here as 3060 to 3000 Ma to allow graphic display of lithology
Age Span:
Beginning stage:
Mesoarchean
Fraction up in beginning stage:
0.35
Beginning date (Ma):
3,060.00
Ending stage:
Mesoarchean
Fraction up in the ending stage:
0.5
Ending date (Ma):
3,000.00
Depositional setting
Depositional pattern:
Additional Information
Compiler:
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.