Beaufort Group
Third of the main subdivisions of the Karoo Supergroup in South Africa / From Wikipedia, the free encyclopedia
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The Beaufort Group is the third of the main subdivisions of the Karoo Supergroup in South Africa. It is composed of a lower Adelaide Subgroup and an upper Tarkastad Subgroup.[1][2] It follows conformably after the Ecca Group and unconformably underlies the Stormberg Group. Based on stratigraphic position, lithostratigraphic and biostratigraphic correlations,[3] palynological analyses, and other means of geological dating, the Beaufort Group rocks are considered to range between Middle Permian (Wordian) to Early Triassic (Anisian) in age.[4][5]
Quick Facts Type, Underlies ...
Beaufort Group | |
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Stratigraphic range: Guadalupian-Early Triassic ~268–247 Ma | |
Type | Geologic group |
Underlies | Stormberg Group |
Overlies | Ecca Group |
Thickness | up to 22,965.88 feet (7,000 m) |
Lithology | |
Primary | Mudstone, claystone, siltstone |
Other | Sandstone, shale, Tuff |
Location | |
Region | Northern Cape, Western, Eastern Cape, KwaZulu-Natal, Free State. |
Country | South Africa |
Extent | 145 000 km squared |
A simplified geological map of the outcrops of Karoo Supergroup rocks in Southern Africa. The Beaufort Group is represented by the yellow key on the map. |
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