Strong rocks sustain ancient postorogenic topography in southern Africa

Geology

Volumn 41, Issue 3, 2013, Pages 331-334

  Scharf, Taryn E ^a,b   Codilean, Alexandru T ^a   De Wit, Maarten ^b   Jansen, John D ^c   Kubik, Peter W ^d  

^a Earth Surface Geochemistry   (Germany)

^b NELSON MANDELA METROPOLITAN UNIVERSITY   (South Africa)

^c STOCKHOLM UNIVERSITY   (Sweden)

^d ETH ZURICH   (Switzerland)

Author keywords

[No Author keywords available]

Indexed keywords

CENOZOIC; COSMOGENIC NUCLIDES; DENUDATION RATES; LATE CENOZOIC; RUGGED TOPOGRAPHY; SEDIMENTATION ANALYSIS; SLOPE ANGLES; STEADY STATE; STEEP SLOPE; STRONG ROCKS; TECTONIC STABILITY; THERMOCHRONOLOGY;

CATCHMENTS; LANDFORMS; RUNOFF;

TOPOGRAPHY;

CENOZOIC; DENUDATION; MOUNTAIN; OROGENY; TECTONIC EVOLUTION; THERMOCHRONOLOGY; TOPOGRAPHY;

CAPE MOUNTAINS; SOUTH AFRICA; SOUTHERN AFRICA;

EID: 84874699684     PISSN: 00917613     EISSN: 19432682     Source Type: Journal    
DOI: 10.1130/G33806.1     Document Type: Article

References (37)

1. Baldwin, J.A., Whipple, K.X., and Tucker, G.E., 2003, Implications of the shear stress river incision model for the timescale of postorogenic decay of topography: Journal of Geophysical Research, v. 108, 2158, doi:10.1029/2001JB000550.
2. Bishop, P., and Brown, R., 1992, Denudational isostatic rebound of intraplate highlands: The Lachlan River valley, Australia: Earth Surface Processes and Landforms, v. 17, p. 345-360, doi:10.1002/esp.3290170405.
3. Brown, R.W., Rust, D.J., Summerfield, M.A., Gleadow, A.J.W., and de Wit, M.C.J., 1990, An early Cretaceous phase of accelerated erosion on the south-western margin of Africa: Evidence from apatite fission track analysis and the offshore sedimentary record: Nuclear Tracks and Radiation Measurements, v. 17, p. 339-350, doi:10.1016/1359-0189(90)90056-4.
4. Brown, R.W., Summerfield, M.A., and Gleadow, A.J.W., 2002, Denudational history along a transect across the Drakensberg Escarpment of southern Africa derived from apatite fission track thermochronology: Journal of Geophysical Research, v. 107, p. 1-17, doi:10.1029 /2001JB000745.
5. Codilean, A.T., Fenton, C.R., Fabel, D., Bishop, P., and Xu, S., 2012, Discordance between cosmogenic nuclide concentrations in amalgamated sands and individual fluvial pebbles in an arid zone catchment: Quaternary Geochronology, doi:10.1016/j.quageo.2012.04.007.
6. 3He-based rates of soil production: South African Journal of Geology, v. 114, p. 475-488, doi:10.2113/gssajg.114.3-4.475.
7. de Wit, M., 2007, The Kalahari Epeirogeny and climate change: Differentiating cause and effect from core to space: South African Journal of Geology, v. 110, p. 367-392, doi:10.2113/ gssajg.110.2-3.367.
8. DiBiase, R.A., Whipple, K.X., Heimsath, A.M., and Ouimet, W.B., 2010, Landscape form and millennial erosion rates in the San Gabriel Mountains, CA: Earth and Planetary Science Letters, v. 289, p. 134-144, doi:10.1016/j.epsl.2009.10.036.
9. Doucouré, C.M., and de Wit, M.J., 2003, Old inherited origin for the present near-bimodal topography of Africa: Journal of African Earth Sciences, v. 36, p. 371-388, doi:10.1016/S0899 -5362(03)00019-8.
10. Flowers, R.M., and Schoene, B., 2010, (U-Th)/He thermochronometry constraints on unroofing of the eastern Kaapvaal craton and significance for uplift of the southern African Plateau: Geology, v. 38, p. 827-830, doi:10.1130/G30980.1.
11. Gallagher, K., and Brown, R., 1999, Denudation and uplift at passive margins: The record on the Atlantic Margin of southern Africa: Royal Society of London Philosophical Transactions, ser. A, v. 357, p. 835-859, doi:10.1098/rsta.1999.0354.
12. Hack, J.T., 1982, Physiographic divisions and differential uplift in the Piedmont and Blue Ridge: U.S. Geological Survey Professional Paper 1265, p. 1-49.
13. Hovius, N., Stark, C.P., Hao-Tsu, C., and Jiun-Chuan, L., 2000, Supply and removal of sediment in a landslide-dominated mountain belt: Central Range, Taiwan: Journal of Geology, v. 108, p. 73-89, doi:10.1086/314387.
14. Jansen, J.D., Codilean, A.T., Bishop, P., and Hoey, T.B., 2010, Scale dependence of lithological control on topography: Bedrock channel geometry and catchment morphometry in western Scotland: Journal of Geology, v. 118, p. 223-246, doi:10.1086/651273.
15. Jansen, J.D., Fabel, D., Bishop, P., Xu, S., Schnabel, C., and Codilean, A.T., 2011, Does decreasing paraglacial sediment supply slow knickpoint retreat?: Geology, v. 39, p. 543-546, doi:10.1130/G32018.1.
16. 21Ne: South African Journal of Geology, v. 110, p. 235-248, doi:10.2113/gssajg.110.2-3.235.
17. Kounov, A., Viola, G., de Wit, M., and Andreoli, M.A.G., 2009, Denudation along the Atlantic passive margin: New insights from apatite fission-track analysis on the western coast of South Africa, in Lisker, F., et al., eds., Thermochronological methods: From palaeotemperature constraints to landscape evolution models: Geological Society of London Special Publication 324, p. 287-306, doi:10.1144/SP324.19.
18. Lithgow-Bertelloni, C., and Silver, P.G., 1998, Dynamic topography, plate driving forces and the African superswell: Nature, v. 395, p. 269-272, doi:10.1038/26212.
19. Matmon, A.S., Bierman, P., Larsen, J., Southworth, S., Pavich, M., Finkel, R., and Caffee, M., 2003, Erosion of an ancient mountain range, the Great Smoky Mountains, North Carolina and Tennessee: American Journal of Science, v. 303, p. 817-855, doi:10.2475/ajs.303.9.817.
20. McMillan, I.K., 2003, Foraminiferally defined biostratigraphic episodes and sedimentation pattern of the Cretaceous drift succession (Early Barremian to Late Maastrichtian) in seven basins on the South African and southern Namibian continental margin: South African Journal of Science, v. 99, p. 537-576.
21. Molnar, P., Anderson, R.S., and Anderson, S., 2007, Tectonics, fracturing of rock, and erosion: Journal of Geophysical Research, v. 112, F03014, doi:10.1029/2005JF000433.
22. Montgomery, D.R., 2001, Slope distributions, threshold hillslopes, and steady-state topography: American Journal of Science, v. 301, p. 432-454, doi:10.2475/ajs.301.4-5.432.
23. Montgomery, D.R., and Brandon, M.T., 2002, Topographic controls on erosion rates in tectonically active mountain ranges: Earth and Planetary Science Letters, v. 201, p. 481-489, doi: 10.1016/S0012-821X(02)00725-2.
24. Partridge, T.C., and Maud, R.R., 1987, Geomorphic evolution of southern Africa since the Mesozoic: South African Journal of Geology, v. 90, p. 179-208.
25. Partridge, T.C., and Maud, R.R., 2000, Macro-scale geomorphic evolution of southern Africa, in Partridge, T.C., and Maud, R.R., eds., The Cenozoic of southern Africa: New York, Oxford University Press, p. 3-18.
26. Pazzaglia, F.J., and Gardner, T.W., 1994, Late Cenozoic flexural deformation of the middle U.S. Atlantic passive margin: Journal of Geophysical Research, v. 99, p. 12,143-12,157, doi:10.1029 /93JB03130.
27. Portenga, E.W., and Bierman, P.R., 2011, Understanding Earth's eroding surface with 10Be: GSA Today, v. 21, no. 8, p. 4-10, doi:10.1130/G111A.1.
28. Rust, D.J., and Summerfield, M.A., 1990, Isopach and borehole data as indicators of rifted margin evolution in southwestern Africa: Marine and Petroleum Geology, v. 7, p. 277-287, doi: 10.1016/0264-8172(90)90005-2.
29. Schaller, M., von Blanckenburg, F., Hovius, N., and Kubik, P.W., 2001, Large-scale erosion rates from in situ-produced cosmogenic nuclides in European river sediments: Earth and Planetary Science Letters, v. 188, p. 441-458, doi:10.1016/S0012-821X(01)00320-X.
30. Sklar, L.S., and Dietrich, W.E., 2001, Sediment and rock strength controls on river incision into bedrock: Geology, v. 29, p. 1087-1090, doi:10.1130 /0091-7613(2001)029<1087:SARSCO>2.0.CO;2.
31. Stephenson, R., 1984, Flexural models of continental lithosphere based on long-term erosional decay of topography: Geophysical Journal of the Royal Astronomical Society, v. 77, p. 385-413, doi:10.1111/j.1365-246X.1984.tb01940.x.
32. Tinker, J., de Wit, M., and Brown, R., 2008a, Mesozoic exhumation of the southern Cape, South Africa, quantified using apatite fission track thermochronology: Tectonophysics, v. 455, p. 77-93, doi:10.1016/j.tecto.2007.10.009.
33. Tinker, J., de Wit, M., and Brown, R., 2008b, Linking source and sink: Evaluating the balance between onshore erosion and offshore sediment accumulation since Gondwana break-up, South Africa: Tectonophysics, v. 455, p. 94-103, doi:10.1016/j.tecto.2007.11.040.
34. Vorster, C.J., 2001, Metallogenic map of the Republic of South Africa and the Kingdoms of Lesotho and Swaziland: Pretoria, Republic of South Africa, Council for Geoscience, scale 1:1,000,000, 1 sheet.
35. Whipple, K.X., and Tucker, G.E., 2002, Implications of sediment-flux-dependent river incision models for landscape evolution: Journal of Geophysical Research, v. 107, 2039, doi:10.1029 /2000JB000044.
36. Wobus, C., Whipple, K.X., Kirby, E., Snyder, N., Johnson, J., Katerina, S., Crosby, B.T., and Sheehan, D., 2006, Tectonics from topography: Procedures, promise, and pitfalls, in Willett, et al., eds., Tectonics, climate, and landscape evolution: Geological Society of America Special Paper 398, p. 55-74, doi:10.1130/2006.2398(04).
37. Young, R.W., 1989, Crustal constraints on the evolution of the continental divide of eastern Australia: Geology, v. 17, p. 528-530, doi:10.1130/0091 -7613(1989)017<0528:CCOTEO>2.3.CO;2.