Upper Karoo Group
Sequence of Triassic to Early Jurassic rocks in southern Africa
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The Upper Karoo Group is a sequence of Triassic to Early Jurassic sedimentary and volcanic rocks found in Botswana, Zambia, and Zimbabwe.[1]
TypeGeological group
Unit ofKaroo Supergroup
Sub-unitsEscarpment Grit, Angwa Sandstone, Pebbly Arkose Formation, Forest Sandstone, Batoka Formation
OverliesLower Karoo Group
| Upper Karoo Group | |
|---|---|
| Stratigraphic range: Early Triassic-Early Jurassic | |
Upper Karoo sequence at Siyakobvu, Kariba District, Zimbabwe (left to right: Batoka Formation, Forest Sandstone Formation, Pebbly Arkose Formation) | |
| Type | Geological group |
| Unit of | Karoo Supergroup |
| Sub-units | Escarpment Grit, Angwa Sandstone, Pebbly Arkose Formation, Forest Sandstone, Batoka Formation |
| Overlies | Lower Karoo Group |
| Lithology | |
| Primary | Sandstone |
| Other | Basalt, siltstone, mudstone |
| Location | |
| Country | Botswana Zambia Zimbabwe |
It comprises the Escarpment Grit (in the Mid-Zambezi and Limpopo basins)[2] and the Angwa Sandstone (in the Mana Pools and Cabora Bassa Basins),[3] overlain by the Pebbly Arkose Formation and the Forest Sandstone, capped by Batoka Formation basalts.[4][5][6][7]