Late Mesozoic and Tertiary sediment supply to the eastern Cape Basin (SE Atlantic) and palaeo-drainage systems in Southwestern Africa

Dingle, R. V.; Hendry, Q.B

doi:10.1016/0025-3227(84)90003-3

Cited by 104 publications

(66 citation statements)

References 9 publications

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“…This is in agreement with previous studies that propose the evolution of the Oliphants drainage system into the Orange system during the Albian (e.g. Dingle & Hendry, 1984). The sedimentology of the package in the Kudu wells confirms that it is a clastics-dominated shallow marine sequence.…”

Section: Development Of the Namibian Part Of The Orange Basinsupporting

confidence: 92%

Interaction of crustal heterogeneity and lithospheric processes in determining passive margin architecture on the southern Namibian margin

Mohammed

Paton

Collier

et al. 2016

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Abstract:The influence of pre-rift crustal heterogeneity and structure upon the evolution of a continental rift and its subsequent passive margin is explored. The absence of thick Aptian salts in the Namibian South Atlantic allows imaging of sufficient resolution to distinguish different pre-rift basement seismic facies. Aspects of pre-rift basement geometry have been characterized which are then compared with the geometries of Cretaceous rift basin structure, and of subsequent post-rift margin architectural elements. Half-graben depocentres migrate westward within the continental syn-rift phase, at the same time as basin bounding faults become established as hard-linked arrays with lengths of approximately 100 km. The rift-drift transition phase, marked by Seaward Dipping Reflectors, gives way to the early post-rift progradation of clastics off the Namibian coast. In the Late Cretaceous, these shelf clastics are much thicker in the south, reflecting the dominance of the newly formed Orange River catchment as the main sediment entry point on the South African/Namibian margin. Tertiary clastics largely bypass the pre-existing shelf area, revealing a marked basinwards shift in sedimentation. Post-rift megasequence thicknesses do not vary simply according to the location of syn-rift half-grabens and thinned continental crust. Rather, the Namibian margin exemplifies margins influenced by a complex interplay of crustal thinning, pre-rift basement heterogeneity, volcanic bodies and transient dynamic uplift events on the evolution of lithospheric strain and depositional architectures.

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Section: Development Of the Namibian Part Of The Orange Basinsupporting

confidence: 92%

Interaction of crustal heterogeneity and lithospheric processes in determining passive margin architecture on the southern Namibian margin

Mohammed

Paton

Collier

et al. 2016

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“…Westaway et al, 2003). See, e.g., Dingle and Hendey (1984) for further discussion of the Cenozoic evolution of the Vaal river system and Butzer et al (1973) for more detail on its fluvial deposits. .…”

Section: Discussionmentioning

confidence: 99%

Climatically controlled river terrace staircases: A worldwide Quaternary phenomenon

2008

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R. (2007) 'Climatically controlled river terrace staircases : a worldwide quaternary phenomenon. ', Geomorphology.,. 285-315 . Further information on publisher's website:http://dx.doi.org/10.1016/j.geomorph. 2006.12.032 Publisher's copyright statement:Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

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“…Up to now, seismic surveys have concentrated on the study of (a) the structural evolution of the margin (Martin and Hartnady, 1986;Ben Avraham et al, 1993, 1994Martin, 2007;Parsiegla et al, 2008), (b) the Mesozoic units that document break up and post-break up (Dingle and Hendey, 1984;Broad et al, 2006), and (c) the Quaternary units of the continental margin because they bear traces of the glacial/interglacial cycles and thus rapid climate changes (Martin and Flemming, 1986;Martin and Flemming, 1988;Compton et al, 2002;Rau et al, 2002;Compton et al, 2004;Rau et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

Sedimentary deposits on the southern South African continental margin: Slumping versus non-deposition or erosion by oceanic currents?

Uenzelmann-Neben¹,

Huhn²

2009

Marine Geology

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Seismic profiles extending from the southern South African shelf into the deep sea reveal a strong erosional activity, which affects large parts of the continental margin. Quaternary to Oligocene units and, in places, the complete sedimentary column appear to have been removed. Mass movements were previously considered as the origin of this erosion. However, structures indicating slumping can be identified in only a few places. The erosional activity is confined to specific water depths, which correlate well with the activity levels of water masses observed here. We thus suggest that the Agulhas Current, Antarctic Intermediate Water, North Atlantic Deep Water, and Antarctic Bottom Water have intensively shaped the sedimentary units over a long period. This indicates a stable circulation comparable to that at present day since the Neogene.

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Late Mesozoic and Tertiary sediment supply to the eastern Cape Basin (SE Atlantic) and palaeo-drainage systems in Southwestern Africa

Cited by 104 publications

References 9 publications

Interaction of crustal heterogeneity and lithospheric processes in determining passive margin architecture on the southern Namibian margin

Interaction of crustal heterogeneity and lithospheric processes in determining passive margin architecture on the southern Namibian margin

Climatically controlled river terrace staircases: A worldwide Quaternary phenomenon

Sedimentary deposits on the southern South African continental margin: Slumping versus non-deposition or erosion by oceanic currents?

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