Sediment supply to the Orange sedimentary system over the last 150 My: An evaluation from sedimentation/denudation balance |
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| Authors: | D Rouby S Bonnet F Guillocheau K Gallagher C Robin F Biancotto O Dauteuil J Braun |
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| Institution: | 1. Géosciences Rennes, Université de Rennes 1, Campus de Beaulieu, 35042 Rennes Cédex, France;2. CNRS/INSU, UMR 6118, Campus de Beaulieu, 35042 Rennes Cédex, France |
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| Abstract: | The South African plateau is bordered by passive margin basins preserving the terrigeneous sediment produced during onshore erosion. As such, these basins potentially provide a record of the variation in onshore elevation and relief over time. Here we bring new constraints on the uplift and erosion of the Southern African plateau over the last 150 Ma from the perspective of the stratigraphic architecture of these basins. We review published data to quantify the terrigeneous supply eroded in the drainage area and preserved in the basins. The novel aspect of our approach is the integration of the evolution of the whole domain in sedimentation (i.e. not only the platform) as well as the onshore eroding region. |
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| Keywords: | Southern Africa Relief Erosion Sedimentary basins Terrigeneous supply |
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