The Upper Karoo Group is a sequence of
Triassic
The Triassic ( ) is a geologic period and system (stratigraphy), system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago (Year#Abbreviations yr and ya, Mya), to the beginning of the Jurassic Period 201.36 ...
to
Early Jurassic
The Early Jurassic Epoch (geology), Epoch (in chronostratigraphy corresponding to the Lower Jurassic series (stratigraphy), Series) is the earliest of three epochs of the Jurassic Period. The Early Jurassic starts immediately after the Triassic-J ...
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 Kalaha ...
,
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 t ...
, 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 ...
.
It comprises the
Escarpment Grit (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 ...
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 cons ...
, capped by
Batoka Formation basalts.
See also
*
Karoo Supergroup
The Karoo Supergroup is the most widespread stratigraphic unit in Africa south of the Kalahari Desert. The supergroup consists of a sequence of units, mostly of nonmarine origin, deposited between the Late Carboniferous and Early Jurassic, a peri ...
References
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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