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Bidouw Subgroup

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Journal Article
Published: 27 November 2019
Journal of Sedimentary Research (2019) 89 (11): 1140–1170.
...Cameron R. Penn-Clarke; Bruce S. Rubidge; Zubair A. Jinnah ABSTRACT The sedimentology of the Eifelian–Givetian (Middle Devonian) Bidouw Subgroup in the Clanwilliam Sub-basin of South Africa has been reassessed. Four distinct lithofacies associations are recognized (A–D) and are representative...
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Detailed composite stratigraphic profiles of the <b>Bidouw</b> <b>Subgroup</b>.  A)  Nort...
Published: 27 November 2019
Fig. 4.— Detailed composite stratigraphic profiles of the Bidouw Subgroup. A) Northern study sector. B) Central study sector. C) Southern study sector.
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Characteristics of lithofacies A–D of the <b>Bidouw</b> <b>Subgroup</b>.
Published: 27 November 2019
Table 1.— Characteristics of lithofacies A–D of the Bidouw Subgroup.
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Select characteristics of Lithofacies Association A of the <b>Bidouw</b> <b>Subgroup</b>....
Published: 27 November 2019
Fig. 5.— Select characteristics of Lithofacies Association A of the Bidouw Subgroup. A) Outcrop character as monotonous shales. Klipbokkop Formation at Nieuweplaas, Jacob's staff for scale is 1.5 m. B) Detail of planar-laminated shale. Klipbokkop Formation at Blinkberg. Scale bar is 8.0 cm
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Fossils associated with Lithofacies Association D of the <b>Bidouw</b> <b>Subgroup</b>.  ...
Published: 27 November 2019
Fig. 18.— Fossils associated with Lithofacies Association D of the Bidouw Subgroup. A) Concentration of allochthonous coalified fossil plant thalli fragments (darker gray) along top surface of third-order trough cross-bed foresets (lighter gray). Scale bar is 8.0 cm. Wupperthal Formation at Oom
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Sequence stratigraphy of the <b>Bidouw</b> <b>Subgroup</b> in the Clanwilliam Sub-basin w...
Published: 27 November 2019
Fig. 19.— Sequence stratigraphy of the Bidouw Subgroup in the Clanwilliam Sub-basin with second-, third-, and fourth-order T-R curves inferred from paleoenvironmental shifts and stacking patterns relative to lithostratigraphy and chronostratigraphy.
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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A)  Typical outcrop expression of Lithofacies Association B of the <b>Bidouw</b> S...
Published: 27 November 2019
Fig. 7.— A) Typical outcrop expression of Lithofacies Association B of the Bidouw Subgroup as a series of non-amalgamated and laterally continuous HCS quartz wacke co-sets (HCS) that sharply intercalate heterolithic-laminated sandstones and mudstones (HL). Wupperthal Formation at Blinkberg
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Ichnofossils associated with Lithofacies Association A of the <b>Bidouw</b> Subgro...
Published: 27 November 2019
Fig. 6.— Ichnofossils associated with Lithofacies Association A of the Bidouw Subgroup. A) Cochlichnus isp. ( Co .) passichnion and fodichnion mold showing typical “sine-curve” shape of ichnofossil on top bedding plane of a massive claystone, Waboomberg Formation at Swartkrans. Scale bar
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Ichnofossils associated with Lithofacies Association C of the <b>Bidouw</b> Subgro...
Published: 27 November 2019
Fig. 14.— Ichnofossils associated with Lithofacies Association C of the Bidouw Subgroup. A) Lateral profile of unbranched funnel shaped fodinichnia and domichnia of Altichnus isp. ( Al .) Wupperthal Formation at Grootberg. B) Top-bedding-plane view of Asterosoma isp. ( Ast .) fodinichnia
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Select ichnofossils associated with Lithofacies Association B of the <b>Bidouw</b>...
Published: 27 November 2019
Fig. 11.— Select ichnofossils associated with Lithofacies Association B of the Bidouw Subgroup. A) Top bedding plane view of Protoichnites isp. ( Pr .) and Palaeophycus isp. ( Pa .) repichnia. Wupperthal Formation at Grootberg. B) Repichnion of Cochnlichnus isp. ( Co .). Klipbokkop
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Pervasive bioturbation associated with Lithofacies Association C of the Bid...
Published: 27 November 2019
Fig. 15.— Pervasive bioturbation associated with Lithofacies Association C of the Bidouw Subgroup. A) Pervasive bioturbation of amalgamated HCS quartz wacke co-sets destroying primary sedimentary structures in places. Wupperthal Formation at Swartkrans. Scale is 1.0 m. B) Generation
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Select sedimentary features associated with Lithofacies Association D of th...
Published: 27 November 2019
Fig. 17.— Select sedimentary features associated with Lithofacies Association D of the Bidouw Subgroup. A) Sharply interbedded tabular (PCS) and trough (TCS) cross-bedded quartz arenites and planar-bedded (PL) quartz arenites. Osberg Formation at Blinkberg. B) Detail of bedding relationships
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Detail of select sedimentary features associated with Lithofacies Associati...
Published: 27 November 2019
Fig. 9.— Detail of select sedimentary features associated with Lithofacies Association B of the Bidouw Subgroup. A) Thin-scale bedding showing alternate upward-coarsening co-sets consisting of lower lenticular to wavy-bedded sandstone bedsets and upper flaser-bedded sandstone bedsets
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Soft-sediment-deformation features associated with Lithofacies Association ...
Published: 27 November 2019
Fig. 10.— Soft-sediment-deformation features associated with Lithofacies Association B of the Bidouw Subgroup. A) Outcrop expression of a HCS quartz wacke with pervasive soft-sediment deformation, distorting internal primary sedimentary structures and character. Highlighted features include
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Select sedimentary features associated with Lithofacies Association C of th...
Published: 27 November 2019
Fig. 13.— Select sedimentary features associated with Lithofacies Association C of the Bidouw Subgroup. A) Amalgamated HCS quartz wacke co-sets. Wupperthal Formation, Grootberg. Scale is 1.0 m. B) Amalgamated accretionary HCS quartz wacke co-set showing multiple low-angled, undulatory
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Contact relationships among Lithofacies Associations B, C, and D representa...
Published: 27 November 2019
Fig. 16.— Contact relationships among Lithofacies Associations B, C, and D representative of OTZ-dLSF, pLSF, and USF-Beach paleoenvironments in the Bidouw Subgroup showing maximum regressive surfaces (MRS) and regressive surfaces of marine erosion (RSME). A) Sharp and erosional contact between
Journal Article
Published: 01 September 2020
South African Journal of Geology (2020) 123 (3): 381–398.
... of Stellenbosch , South Africa , 175 pp. Theron , J.N. and Johnson , M.R. , 1991 . [Devonian] [Cape Supergroup] Bokkeveld Group (including the Ceres, Bidouw and Traka Subgroups . In: M.R. Johnson (Editor), Catalogue of South African Lithostratigraphic Units (1st edition). South African...
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Journal Article
Journal: PALAIOS
Published: 16 April 2019
PALAIOS (2019) 34 (4): 212–228.
... al. 1996 ). These shelly fossil assemblages are preserved as molds within the mudrock dominated units of the Gydo, Voorstehoek, and Waboomberg formations (Bidouw Subgroup). Invertebrate assemblages of the Voorstehoek Formation are often disarticulated and concentrated in shell lenses...
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