A simplified geological map of the outcrops of Karoo Supergroup rocks in Southern Africa. The Dwyka Group deposits are represented by the red key on the map
The Dwyka Group is one of four geological groups that compose the Karoo Supergroup. It is the lowermost geological group and heralds the commencement of sedimentation of the Karoo Supergroup. Based on stratigraphic position, lithostratigraphic correlation and palynological analyses, these lowermost Karoo strata range between the Late Carboniferous (Pennsylvanian) to Early Permian in age.[1][2][3][4]
^Visser, J.N.J. (1986). "Lateral lithofacies relationships in the glacigene Dwyka Formation in the western and central parts of the Karoo Basin". Transactions of the Geological Society of South Africa. 89: 373–383.
^Isbell, John L., Douglas I. Cole, and Octavian Catuneanu. "Carboniferous-Permian glaciation in the main Karoo Basin, South Africa: Stratigraphy, depositional controls, and glacial dynamics." In Resolving the Late Paleozoic ice age in time and space, vol. 441, pp. 71–82. Geological Society of America Special Paper, 2008. Link: https://www.researchgate.net/profile/John_Isbell/publication/235926635_Carboniferous-Permian_glaciation_in_the_main_Karoo_Basin_South_Africa_Stratigraphy_depositional_controls_and_glacial_dynamics/links/00463514485423265a000000/Carboniferous-Permian-glaciation-in-the-main-Karoo-Basin-South-Africa-Stratigraphy-depositional-controls-and-glacial-dynamics.pdf
^Smith, R.M.H., Eriksson, P.G., Botha, W.J. (1993-01-01). "A review of the stratigraphy and sedimentary environments of the Karoo-aged basins of Southern Africa". Journal of African Earth Sciences (and the Middle East). 16 (1–2): 143–169. Bibcode:1993JAfES..16..143S. doi:10.1016/0899-5362(93)90164-L. ISSN 0899-5362.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^Bamford, M. K. (2004-01-01). "Diversity of the Woody Vegetation of Gondwanan Southern Africa". Gondwana Research. 7 (1): 153–164. Bibcode:2004GondR...7..153B. doi:10.1016/S1342-937X(05)70314-2. ISSN 1342-937X.
The DwykaGroup is one of four geological groups that compose the Karoo Supergroup. It is the lowermost geological group and heralds the commencement of...
Theory of Continental Drift. In South Africa the layer is known as the DwykaGroup. It is the earliest and lowermost of the Karoo Supergroup of sedimentary...
Dwyka may refer to: Dwyka River, a river in the Karoo region of South Africa DwykaGroup, a group of sedimentary geological formations in Southern Africa...
Group is truncated by the overlying Dwyka sediments of glacial origin. The latter forms part of the Karoo Supergroup. Therefore, the Witteberg Group forms...
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...
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...
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"...
specimens, it is from the Lystrosaurus Assemblage Zone of the Beaufort Group of South Africa. Chasmatosaurus yuani was named by C. C. Young in 1936,...
woody trees and herbaceous ferns, and belongs to the progymnosperms, a group of extinct plants with gymnosperm-like wood but that produce spores rather...
The Dwyka River is located in the Karoo region, in South Africa. It flows from the North-west, joining the Gamka River as a tributary at the Gamka Dam...
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...
the homonymy between the dinosaur Syntarsus and beetle Syntarsus, but the group who published Megapnosaurus have claimed that they believed Raath was deceased...
association suggest that this early ornithischian dinosaur may have lived in groups. The skull and teeth of Lesothosaurus are more generalized than the heavily...
Earth. It contains the world's largest reserves of platinum-group metals (PGMs) and platinum group elements (PGEs) — platinum, palladium, osmium, iridium,...
originally discovered in the Lystrosaurus Assemblage Zone of the Beaufort Group of South Africa. The genoholotype, BMNH R 511, was in 1887 described by...
a basal (or "primitive") group within the order of ornithischian dinosaurs, while their closest affinities within the group are debated. In spite of the...
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...
short-snouted therocephalian, possessing large canines as is typical of the group. However, it is notable among therocephalians for possessing ridges on its...
Supergroup, dating from the Permian period, between 280 and 250 Ma. The Ecca Group is extensive, covering around two-thirds of South Africa (much of it covered...
the DwykaGroup in some sections, but in some localities overlying unconformably over much older basement rocks. It underlies the Beaufort Group in all...
layer, the Upper Group 2 Reef (UG2), contains most of the world's known reserves of platinum group metals (PGMs) or platinum group elements (PGEs)—platinum...
the Zambezi River. The Cape Supergroup is divided into several distinct Groups. The western and southern extents of the Supergroup have been folded into...
Farm" locality in the upper Elliot Formation which is part of the Stormberg Group in Eastern Cape Province, South Africa. It was collected by James Kitching...
classified as a prosauropod, but Prosauropoda no longer appears to be a natural group. According to some definitions of Sauropoda, Melanorosaurus is an early...
crucial for the understanding of the origin and early evolution of this group. It was a quadrupedal herbivore, like its later relatives, but shows primitive...
Global Information
South Africa
Namibia
Botswana
Zimbabwe