| Beaufort Group | |
|---|---|
| Stratigraphic range: Guadalupian-Early Triassic ~ | |
| 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. | |
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]
- ^ Keyser, A. W., & Smith, R. M. H. (1978). Vertebrate biozonation of the Beaufort Group with special reference to the western Karoo Basin. Geological Survey, Department of Mineral And Energy Affairs, Republic of South Africa.
- ^ Smith, R.M.H., Eriksson, P.G. and Botha, W.J. (1993-01-01). "A review of the stratigraphy and sedimentary environments of the Karoo-aged basins of Southern Africa". Journal of African Earth Sciences (and the Middle East). 16 (1–2): 143–169. Bibcode:1993JAfES..16..143S. doi:10.1016/0899-5362(93)90164-L. ISSN 0899-5362.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Rubidge, B. S.; Hancox, P. J. (1997). "The role of fossils in interpreting the development of the Karoo Basin". Palaeontologia Africana. ISSN 0078-8554.
- ^ Rubidge, B. S. (ed.) 1995b. Biostratigraphy of the Beaufort Group (Karoo Supergroup). South African Committee of Stratigraphy. Biostratigraphic Series 1. Pretoria, Council for Geoscience.
- ^ Jirah, Sifelani; McPhee, Blair W.; Viglietti, Pia A.; Bamford, Marion K.; Choiniere, Jonah N.; Hancox, P. John; Barbolini, Natasha; Day, Michael O.; Rubidge, Bruce S. (2016), "Advances in Nonmarine Karoo Biostratigraphy: Significance for Understanding Basin Development", Origin and Evolution of the Cape Mountains and Karoo Basin, Regional Geology Reviews, Springer, Cham, pp. 141–149, doi:10.1007/978-3-319-40859-0_14, ISBN 9783319408583