Pebbly Arkose | |
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Stratigraphic range: Carnian ~ | |
Type | Geological formation |
Unit of | Upper Karoo Group, Karoo Supergroup |
Underlies | Forest Sandstone |
Overlies | Escarpment Grit & Angwa Sandstone |
Lithology | |
Primary | Sandstone |
Location | |
Coordinates | 16°12′S 30°18′E / 16.2°S 30.3°E |
Approximate paleocoordinates | 50°48′S 11°54′E / 50.8°S 11.9°E |
Region | Mashonaland Central & West |
Country | Botswana Zambia Zimbabwe |
Type section | |
Named for | Descriptive name |
Named by | A.M. MacGregor, Zimbabwe Geological Survey |
The Pebbly Arkose Formation is a Late Triassic geologic formation found in southern Africa.
The formation comprises mainly coarse, arkosic sandstones.[1]
The Pebbly Arkose Formation is found in Botswana, Zambia and Zimbabwe, in the Mid-Zambezi, Mana Pools, Cabora Bassa and Limpopo basins.
The Pebbly Arkose Formation is part of the Upper Karoo Group, overlies the Escarpment formation (in the Mid-Zambezi and Limpopo basins)[2] and the Angwa Sandstone Formation (in the Mana Pools and Cabora Bassa Basins)[3] and underlies the Forest Sandstone Formation.[4]
The Pebbly Arkose has been correlated to the Elliot Formation of the Great Karroo Basin, South Africa[4][5] and the Mpandi Formation of the Thuli Basin in Botswana and Zimbabwe.[6]
Pinales of the Pebbly Arkose Formation | ||||
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Taxa | Presence | Notes | Images | |
Form genus: Dadoxylon | Widespread in the formation[7] |
Archosauria of the Pebbly Arkose Formation | ||||
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Genus | Presence | Notes | Images | |
Mbiresaurus[8] | An early member of Sauropodomorpha. | |||
Unnamed aetosaur[8] | ||||
Unnamed herrerasaurid[8] |
Rhynchosauria of the Pebbly Arkose Formation | ||||
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Genus | Presence | Notes | Images | |
Hyperodapedon[9] | Dande, Mbire District, Zimbabwe[9] |
Synapsida of the Pebbly Arkose Formation | ||||
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Genus | Presence | Notes | Images | |
Possible dicynodont[8] | ||||
Unnamed gomphodontosuchine traversodontid cynodont[8] |