Abstract
The geomorphological evolution of the Pilanesberg Complex , an alkaline igneous body emplaced around 1,250 million years ago and subsequently exhumed by erosion, reflects the interplay of tectonic and climatic factors over very long time periods that have given rise to regional-scale patterns of geomorphological processes and resultant landforms. The topography and river patterns of the Pilanesberg region have evolved by progressive denudation of Karoo sedimentary rocks (<30 Ma), revealing evidence for a much older, relict land surface that may have been formed during the Dwyka glaciation around 300 million years ago. The absence of significant placer deposits of gold , platinum and chromium is explained by this proposed model.
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References
Barath S, Dunlevey JN (2010) Gold in Karoo supergroup heavy-mineral deposits, KwaZulu-Natal, South Africa. S Afr J Geol 113:437–444
Burke K, Gunnell Y (2008) The African erosion surface: a continental-scale synthesis of geomorphology, tectonics, and environmental change over the past 180 million years. Geol Soc Am Memoir 201:66 pp
Carruthers J (2011) Pilanesberg National Park, North West Province, South Africa: uniting economic development with ecological design—a history, 1960s to 1984. Koedoe 53(1), Art. #1028, 10 pages. doi:10.4102/koedoe.v53i1.1028
Labuschagne LS, Holdsworth R, Stone TP (1993) Regional stream sediment geochemical survey of South Africa. J Geochem Expl 47:283–296
Lurie J (1973) The Pilanesberg: rare earth element geochemistry and economic potential. Unpublished PhD thesis, Rhodes University, 308 pp
McCarthy TS (2013) The Okavango Delta and its place in the geomorphological evolution of Southern Africa. S Afr J Geol 116:1–54
McCarthy TS, Rubidge B (2005) The story of earth and life. Struik Nature, Cape Town, 334 pp
Partridge TC, Maud RR (1987) Geomorphic evolution of southern Africa since the Mesozoic. S Afr J Geol 90:179–208
Shand SJ (1928) The geology of Pilanesberg (Pilaan’s Berg) in the western Transvaal: a study of the alkaline rocks and ring-intrusions. Trans Geol Soc S Afr 31:97–156
Temme AJAM, Baartman JEM, Botha GA, Veldkamp A, Jongmans AG, Wallinga J (2008) Climate controls on late Pleistocene landscape evolution of the Okhombe valley, KwaZulu-Natal, South Africa. Geomorphol 99:280–295
van Schijndel V, Cornell DH, Karlsson L, Olsson JR (2011) Baddeleyite geochronology and geochemistry of mafic cobbles from the Dwyka diamictite: new insights into the sub-Kalahari basement, South Africa. Lithos 126:307–320
Verwoerd WJ (2006) The Pilanesberg alkaline province. In: Johnson MR, Anhaeusser CR, Thomas RJ (eds) The geology of South Africa. Geological Society of South Africa, Johannesburg/Council for Geoscience, Pretoria, pp 381–394
Wellington JH (1937) The pre-Karroo peneplain in the south-central Transvaal. S Afr J Sci 33:231–295
Wellington JH (1941) Stages in the process of river-super-position in the southern Transvaal. S Afr J Sci 37:78–96
Wilhelm HJ, van Rooyen RC (2001) Geochemical map series, 1:1,000,000 scale. 2526 Rustenburg. Council for Geoscience, Pretoria
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We thank two anonymous reviewers for their comments.
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Cawthorn, R.G., Knight, J., McCarthy, T.S. (2015). Geomorphological Evolution of the Pilanesberg. In: Grab, S., Knight, J. (eds) Landscapes and Landforms of South Africa. World Geomorphological Landscapes. Springer, Cham. https://doi.org/10.1007/978-3-319-03560-4_5
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DOI: https://doi.org/10.1007/978-3-319-03560-4_5
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