The Upper Karoo Group is a sequence of

Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest period ...

Early Jurassic The Early Jurassic Epoch (in chronostratigraphy corresponding to the Lower Jurassic Series) is the earliest of three epochs of the Jurassic Period. The Early Jurassic starts immediately after the Triassic-Jurassic extinction event, 201.3 Ma ...

sedimentary and volcanic rocks found in

Botswana Botswana (, ), officially the Republic of Botswana ( tn, Lefatshe la Botswana, label= Setswana, ), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kal ...

Zambia Zambia (), officially the Republic of Zambia, is a landlocked country at the crossroads of Central, Southern and East Africa, although it is typically referred to as being in Southern Africa at its most central point. Its neighbours are ...

, and

Zimbabwe Zimbabwe (), officially the Republic of Zimbabwe, is a landlocked country located in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Botswana to the south-west, Zambia to the north, and Mozam ...

. It comprises the

Escarpment Grit The Escarpment Grit is a Triassic geologic formation. It is also referred to as the Nyoka Grit. Geology The formation is composed of fluvial sediments, mainly gritstones and coarse sandstones. Uranium is present in the Escarpment Grit of southern ...

(in the Mid-Zambezi and Limpopo basins) and the

Angwa Sandstone The Angwa Sandstone is a geological formation of the mid-Triassic Cabora Bassa Basin and Mana Pools Basin of southern Africa, consisting mainly of sandstone. Description Stratigraphy The Angwa Sandstone is the lowest formation in the Upper Karo ...

(in the Mana Pools and Cabora Bassa Basins), overlain by the

Pebbly Arkose Formation The Pebbly Arkose Formation is a Late Triassic geologic formation found in southern Africa. Geology Description The formation comprises mainly coarse, arkosic sandstones. Extent The Pebbly Arkose Formation is found in Botswana, Zambia ...

and the

Forest Sandstone The Forest Sandstone is a geological formation in southern Africa, dating to roughly between 200 and 190 million years ago and covering the Hettangian to Sinemurian stages of the Jurassic Period in the Mesozoic Era. As its name suggests, it consi ...

, capped by

Batoka Formation The Batoka Formation is a geological formation in the Zambezi valley in Botswana, Zambia and Zimbabwe. It is predominantly a volcanic unit comprising mainly basalts. It was formerly thought to contain sand stones containing the dinosaur ''Vulcanodo ...

basalts.

References

{{reflist Geologic groups of Africa Geologic formations of Botswana Geologic formations of Zambia Geologic formations of Zimbabwe Jurassic System of Africa Triassic System of Africa Karoo Supergroup Sandstone formations Siltstone formations Mudstone formations

See also

References