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Bokkeveld Group

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Journal Article
Journal: PALAIOS
Published: 16 April 2019
PALAIOS (2019) 34 (4): 212-228.
...MHAIRI REID; WENDY L. TAYLOR; CARLTON E. BRETT; AARON W. HUNTER; EMESE M. BORDY ABSTRACT The taphonomy of a well preserved ophiuroid-stylophoran assemblage from the Bokkeveld Group, Lower Devonian of South Africa is described using micro-CT scanning techniques. This assemblage provides a taphonomic...
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Journal Article
Published: 18 September 2018
Journal of Sedimentary Research (2018) 88 (9): 1040-1075.
...Cameron R. Penn-Clarke; Bruce S. Rubidge; Zubair A. Jinnah Abstract Re-evaluation of the sedimentology of the Emsian–Eifelian part of the Bokkeveld Group, the Ceres Subgroup, in the Clanwilliam Sub-basin of South Africa indicates that sedimentation occurred in an array of paleoenvironments...
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Image
A)  Geographic extent of the <b>Bokkeveld</b> <b>Group</b> within the Cape Fold Belt in t...
Published: 18 September 2018
Fig. 1.— A) Geographic extent of the Bokkeveld Group within the Cape Fold Belt in the Clanwilliam and Aghulas sub-basins (redrawn and modified after Theron and Johnson 1991 ). B) Simplified geological map of the Cederberg region highlighting northern ( Fig. 3 A), central ( Fig. 3 B
Image
A)  Lithostratigraphy of the <b>Bokkeveld</b> <b>Group</b> at its type locality, Klipbokb...
Published: 18 September 2018
Fig. 2.— A) Lithostratigraphy of the Bokkeveld Group at its type locality, Klipbokberg, Grootrivierhoogte, Cederberg, Western Cape Province. Note the laterally continuous nature of alternating arenaceous and argillaceous lithologies that form the basis for lithostratigraphy. B) Summary
Journal Article
Published: 01 September 1982
Journal of Sedimentary Research (1982) 52 (3): 959-974.
... to storm washover processes. It is suggested that deposition of the entire Bokkeveld Group occurred on arcuate deltas similar to the modern Brazos and Niger deltas. Rates of relative sea-level rise were high and were punctuated by periods of decreased rates or near stillstand. The duration of these stable...
Journal Article
Published: 01 March 2000
South African Journal of Geology (2000) 103 (1): 1-14.
... parasequences each for a total of approximately 3.5 parasequence sets in the lower Witteberg. The lowest parasequence set extends from the base of the Karoopoort Formation (top of underlying Bokkeveld Group) and culminates at the top of the Blinkberg Formation in the Witteberg Group, and approximately 2.5...
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Journal Article
Published: 01 December 1999
South African Journal of Geology (1999) 102 (4): 391-404.
...P. W. K. Booth; A. J. Munro; R. W. Shone Abstract In this study of Cape Supergroup rocks at Port Alfred, the strata are classified as Witteberg Group rather than the Bokkeveld Group because their lithological characteristics and position in the stratigraphic sequence are similar to Witteberg Group...
Image
En-echelon folds in <b>Bokkeveld</b> and Table Mountain <b>Group</b> rocks at Humansdorp ...
Published: 01 December 2011
Figure 6. En-echelon folds in Bokkeveld and Table Mountain Group rocks at Humansdorp (100 km west of Port Elizabeth). Simplified after Toerien (1986) . H = Humansdorp; J B = Jeffreys Bay.
Image
Outlier of upper <b>Bokkeveld</b> and Witteberg <b>Group</b> rocks south of Ladismith (si...
Published: 01 December 2011
Figure 7. Outlier of upper Bokkeveld and Witteberg Group rocks south of Ladismith (simplified after 1: 250 000 series 3320 Ladismith). This area of outcrop is interpreted as an interference fold structure, where F1 is the earliest phase of folding, and F2 is a subsequent phase of folding.
Series: AAPG Studies in Geology
Published: 01 January 1978
DOI: 10.1306/St6398C30
EISBN: 9781629812007
.... For the Phanerozoic, SACS decided that the Cape "System" becomes the Cape Supergroup and the Karoo "System" a sequence. In the Cape Supergroup the major units are now termed the Table Mountain, Bokkeveld, and Witteberg Groups. In the Karoo sequence, the Dwyka Tillite Formation forms the base followed by the Ecca...
Journal Article
Published: 01 March 2002
South African Journal of Geology (2002) 105 (1): 67-74.
... ), a road cutting (34 ° 11′S, 21 ° 34′E) exposes typically kaolinised saprolite, here developed from Bokkeveld shales of the Cape Super Group. Immediately west of the road cutting, a deep gully has incised eastwards towards the road (Figure 2 ). The Tierfontein site was selected because it exposes the three...
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Journal Article
Published: 01 September 2015
South African Journal of Geology (2015) 118 (3): 225-248.
... ~5000 km. Seismic and borehole data show that the Cape Supergroup pinches out below the Karoo Basin around Beaufort West and Graaff-Reinet in the southern Karoo (32.6°S for the Bokkeveld and 32.4°S for the Table Mountain Group). The Cape Supergroup reaches thicknesses of around 4 km in the south...
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Journal Article
Published: 08 March 2019
Journal of the Geological Society (2019) 176 (3): 417-429.
... crops out on West Falkland, the northern part of East Falkland and the Beauchêne Island ( Aldiss & Edwards 1999 ; Stone 2015 ), has been correlated with the Table Mountain, Bokkeveld and Witteberg groups in South Africa ( Adie 1952 b , cited by Marshall 1994 ), whereas the Fitzroy Tillite...
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Series: Geological Society, London, Special Publications
Published: 01 January 2017
EISBN: 9781786203106
... Supergroup, or Devonian metasediments of the Bokkeveld Group (Fig. 2 ). There are two important points to note. First, the continuity of the seismic character across the section (Fig. 5 ) suggests the presence of continental lithosphere significantly further to the west than has previously been considered...
Journal Article
Published: 01 June 2014
South African Journal of Geology (2014) 117 (1): 109-128.
... facing undulating coastal embayment underlain by the lithologically incompetent argillaceous units of the Bokkeveld Group and Baviaanskloof Formation. An incompetent fine grained, bioturbated sandstone unit within the Skurweberg Formation west of Thyspunt allowed for the development of an elongated...
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Journal Article
Published: 01 June 2017
South African Journal of Geology (2017) 120 (2): 273-280.
... ). Figure 3. Upward fining package of bedded Enon Formation with predominantly shale clasts from the Bokkeveld Group near Herbertsdale, Mossel Bay Basin. ( B ) Imbricated disk-shaped shale pebbles and cobbles from the Mossel Bay Basin. ( C ) Large boulder conglomerate, Mossel Bay Basin. Red dashed line...
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Journal Article
Published: 01 March 2002
South African Journal of Geology (2002) 105 (1): 25-38.
... that there is a close relationship in the development of fore-and backthrusting, and that tectonism was northwards-directed. Rocks of the Palaeozoic Cape Supergroup have traditionally been divided into 3 major groups: the Table Mountain Group at the base, followed conformably by the Bokkeveld Group...
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Journal Article
Published: 01 September 2017
South African Journal of Geology (2017) 120 (3): 341-350.
... the Outeniqua Mountains (near George) in the west, to the Grootwinterhoek Mountains (near Port Elizabeth) in the east of study area. The Cape Supergroup comprises the Table Mountain Group quartzites, the Bokkeveld Group shales and sandstones, and the Witteberg Group, which consists of sandstones and micaceous...
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Journal Article
Published: 01 June 2016
South African Journal of Geology (2016) 119 (2): 379-398.
... sandstones and minor shales of the Ordovician to early Silurian Table Mountain Group, the ≤3900 m thick, shale-dominated Devonian Bokkeveld Group, and the Upper Devonian to early Carboniferous Witteberg Group (≤2900 m; Thamm and Johnson, 2006 ). The samples for the present study were taken from...
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Series: Geological Society, London, Special Publications
Published: 01 January 2013
DOI: 10.1144/SP381.23
EISBN: 9781862396401
... of the Middle Devonian Bokkeveld Group and lower part of the Late Devonian Witteberg Group of South Africa, and also in the Falkland Islands ( Edwards 1990 ). Spores and compressions of Cyclostigma -like stems in carbonaceous layers near the Okanogan Nunatak Haplostigma locality confirm a Middle Devonian age...
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