Triassic/Jurassic geological group in the Karoo Supergroup in South Africa
Stormberg Group
Stratigraphic range: Late Triassic-Early Jurassic ~237–182 Ma
PreꞒ
Ꞓ
O
S
D
C
P
T
J
K
Pg
N
Type
Geologic group
Unit of
Karoo Supergroup
Sub-units
Molteno, Elliot & Clarens Formations
Underlies
Drakensberg Group
Overlies
Beaufort Group
Thickness
up to 4,593.176 feet (1,400 m)
Lithology
Primary
Mudstone, claystone, siltstone
Other
Sandstone, shale, tuff
Location
Region
Eastern Cape, KwaZulu-Natal, Free State, and Lesotho
Country
South Africa Lesotho
Extent
Karoo Basin
Type section
Named for
Stormberg Mountains
Simplified geological map of the outcrops of Karoo Supergroup rocks in Southern Africa. The Stormberg Group is represented by the green key on the map.
The Stormberg Group is one of the four geological groups that comprises the Karoo Supergroup in South Africa. It is the uppermost geological group representing the final phase of preserved sedimentation of the Karoo Basin. The Stormberg Group rocks are considered to range between Lower Triassic (Olenekian) to Lower Jurassic (Pliensbachian) in age. These estimates are based on means of geological dating including stratigraphic position, lithostratigraphic and biostratigraphic correlations, and palynological analyses.[1][2][3]
^Cairncross, B (22 September 2016). Depositional framework and control of coal distribution and quality, Van Dyks Drift area Northern Karoo basin (Masters Thesis). hdl:20.500.11892/83920.
^Christie, ADM (22 September 2016). Stratigraphy and sedimentology of the Molteno formation in the Elliot-Indwe area, Cape Province (Masters Thesis). hdl:20.500.11892/83933.
^Johnson, M.R. (1991). "Sandstone petrography, provenance and plate tectonic setting in Gondwana context of the southeastern Cape-Karoo Basin". South African Journal of Geology. 94 (2–3): 137–54. hdl:10520/AJA10120750_463.
The StormbergGroup is one of the four geological groups that comprises the Karoo Supergroup in South Africa. It is the uppermost geological group representing...
through it, sustaining localized areas of Triassic flora and fauna. The StormbergGroup contains South Africa's earliest dinosaur fossils. It also contains...
Stormberg may refer to: Stormberg Mountains, Eastern Cape province, South Africa Stormberg District, Eastern Cape province of South Africa Stormberg Group...
hdl:10962/133934. INIST 6519911. Visser, J. N. J. (1984). "A review of the StormbergGroup and Drakensberg volcanics in southern Africa". hdl:10539/16136. {{cite...
Subgroup. It follows conformably after the Ecca Group and unconformably underlies the StormbergGroup. Based on stratigraphic position, lithostratigraphic...
Formation is a geological formation and forms part of the StormbergGroup, the uppermost geological group that comprises the greater Karoo Supergroup. Outcrops...
is known from a specimen found in the Upper Elliot Formation of the StormbergGroup of the southern African Karoo Basin. The Elliot Formation spans the...
old) that also are part of the Karoo Supergroup. The Ecca and Beaufort groups are composed of sedimentary rocks that are less erosion resistant than the...
involved are generally sandstones and shales, with the shales (Bokkeveld Group) persisting in the valley floors while the erosion resistant sandstones...
re-radiate into a number of species within the genus, becoming the most common group of terrestrial vertebrates during the Early Triassic; for a while, 95% of...
batholiths, that were intruded into the Malmesbury Group about 630 million years ago, and the Table Mountain group sandstones that were deposited on the eroded...
lamproites than they do to group I kimberlites. Hence, he reclassified group II kimberlites as orangeites to prevent confusion. Group-I kimberlites are of CO2-rich...
only ephemeral rivers and pans. These sands consolidated to form the StormbergGroup, the remnants of which are found only in the immediate vicinity of...
Farm" locality in the upper Elliot Formation which is part of the StormbergGroup in Eastern Cape Province, South Africa. It was collected by James Kitching...
thick layer of rock is termed the "Central Rand Group". The "West Rand Group" and "Central Rand Group" of rocks together form the "Witwatersrand Supergroup"...
one species is recorded, Erythrotherium parringtoni, from Red Beds, StormbergGroup, Mafeteng, Upper Elliot and Clarens Formations, from Lesotho and South...
discovered at the Voyizane locality, in the Elliot Formation of the StormbergGroup of rock formations, 1,770 m (5,807 ft) above sea level, on Krommespruit...
the homonymy between the dinosaur Syntarsus and beetle Syntarsus, but the group who published Megapnosaurus have claimed that they believed Raath was deceased...
it to be a synapsid. Recent study of Mesosauridae phylogeny places the group as either the basal most clade within Parareptilia or the basal most clade...
represents the adult form of Lesothosaurus. Stormbergia was named for the Stormberg Series of rocks in southern Africa, which includes the Elliot Formation...
Fabien (1 January 2004). "Review of the tetrapod fauna of the "Lower StormbergGroup" of the main Karoo Basin (southern Africa) : implication for the age...
June 2020). "Biostratigraphy of the Scalenodontoides Assemblage Zone (StormbergGroup, Karoo Supergroup), South Africa". South African Journal of Geology...
woody trees and herbaceous ferns, and belongs to the progymnosperms, a group of extinct plants with gymnosperm-like wood but that produce spores rather...
originally discovered in the Lystrosaurus Assemblage Zone of the Beaufort Group of South Africa. The genoholotype, BMNH R 511, was in 1887 described by...
Earth. It contains the world's largest reserves of platinum-group metals (PGMs) and platinum group elements (PGEs) — platinum, palladium, osmium, iridium,...
Palaeontologia Africana. 45: 7–10. Broom, Robert (1911). "On the dinosaurs of the Stormberg, South Africa". Annals of the South African Museum. 7 (4): 291–308. Glut...
South Africa. It is the uppermost of the three formations found in the StormbergGroup of the greater Karoo Supergroup rocks and represents the final phase...
Global Information
South Africa
Lesotho