Stormberg Group
The Stormberg Group is one of the four geological groups that comprises the Karoo Supergroup in South Africa. It is the uppermost geological group representing the final phase of preserved sedimentation of the Karoo Basin. The Stormberg Group rocks are considered to range between Lower Triassic (Olenekian) to Lower Jurassic (Pliensbachian) in age. These estimates are based on means of geological dating including stratigraphic position, lithostratigraphic and biostratigraphic correlations, and palynological analyses.
| Stormberg Group | |
|---|---|
| Stratigraphic range: Late Triassic-Early Jurassic ~ | |
| Type | Geologic group |
| Unit of | Karoo Supergroup |
| Sub-units | Molteno, Elliot & Clarens Formations |
| Underlies | Drakensberg Group |
| Overlies | Beaufort Group |
| Thickness | up to 4,593.176 feet (1,400 m) |
| Lithology | |
| Primary | Mudstone, claystone, siltstone |
| Other | Sandstone, shale, tuff |
| Location | |
| Region | Eastern Cape, KwaZulu-Natal, Free State, and Lesotho |
| Country | South Africa Lesotho |
| Extent | Karoo Basin |
| Type section | |
| Named for | Stormberg Mountains |
Simplified geological map of the outcrops of Karoo Supergroup rocks in Southern Africa. The Stormberg Group is represented by the green key on the map. | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.