Английская Википедия:Angwa Sandstone
Шаблон:Infobox rockunit The Angwa Sandstone is a geological formation of the mid-Triassic Cabora Bassa Basin [1]and Mana Pools Basin [2]of southern Africa, consisting mainly of sandstone.[3]
Description
Stratigraphy
The Angwa Sandstone is the lowest formation in the Upper Karoo Group of the Karoo Supergroup, underlying the Pebbly Arkose Formation and overlying the Lower Karoo Group.[4] The formation is divided into two members: the Alternations Member and the Massive Sandstone (Chirambakadoma) Member.[1]
The Angwa Sandstone has been correlated to the Molteno Formation of the Great Karoo Basin, South Africa,[5][1] and to the Escarpment Grit of the Mid-Zambezi Basin.[6]
Lithology
The formation is a sedimentary unit, consisting mainly of fluvial sands and silts.[1]
It has been dated as covering rocks from much of the Triassic, with pollen and flora identified from the Induan, and Ladinian to Norian.[5][7]
Occurrence
The Angwa Sandstone Formation is found in Mozambique, Zambia, Zimbabwe, in the Mana Pools and Cabora Bassa Basins.
Fossil Content
Pinales of the Angwa Sandstone | ||||
---|---|---|---|---|
Genus | Presence | Notes | Images | |
Dadoxylon | Mbire District and Chirundu, Zimbabwe | Шаблон:Center |
Callistophytaceae (Pteridospermopsida) of the Angwa Sandstone | ||||
---|---|---|---|---|
Genus | Presence | Notes | Images | |
Lepidopteris | Manyima River, Mbire District, Zimbabwe | Шаблон:Center | ||
Dicroidium | Manyima River, Mbire District, Zimbabwe | Шаблон:Center |
Ginkgoales of the Angwa Sandstone | ||||
---|---|---|---|---|
Genus | Presence | Notes | Images | |
Sphenobaiera | Manyima River, Mbire District, Zimbabwe | Шаблон:Center |
References
- ↑ 1,0 1,1 1,2 1,3 Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ 5,0 5,1 Шаблон:Cite journal
- ↑ Шаблон:Cite journal
- ↑ Ошибка цитирования Неверный тег
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- Английская Википедия
- Geologic formations of Mozambique
- Geologic formations of Zambia
- Geologic formations of Zimbabwe
- Triassic System of Africa
- Sandstone formations
- Fluvial deposits
- Paleontology in Zimbabwe
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