AuthorsA. Said, C. Moder, S. Clark and B. Ghorbal
TitleCretaceous-Cenozoic sedimentary budgets of the Southern Mozambique Basin: implications for uplift history of the South African Plateau
AfilliationKalkulo, Scientific Computing
StatusPublished
Publication TypeJournal Article
Year of Publication2015
JournalJournal of African Earth Sciences
Volume109
Pagination1-10
Date Published19/05/2015
PublisherJournal of African Earth Sciences
KeywordsPassive margins; Sedimentary flux; Uplift history; Southern Mozambique Basin
Abstract

In this study, data from 41 wells were used to quantify the evolution of the sedimentary budget in the Southern Mozambique passive margin basin, with a high temporal resolution for the Cenozoic period. We found that the drainage areas, which supplied sediments to the Southern Mozambique Basin, were eroded in two episodes. The first, of Mid-Late Cretaceous in age, is concordant with both thermochronological datation and sedimentary fluxes estimated by other studies in the Namibian and South African and Northern Mozambique margins. This erosion episode ended when the African surface, as defined by Burke and Gunnel (2008), had become flat and low-lying over most of the South African Plateau by ~65 Ma. Carbonate sediment deposition became more important in the shallow waters of the Mozambique basin after that time. The second erosion episode began at ~23 Ma and is likely due to an uplift event of the North-eastern part of the South African Plateau. It seems that the Limpopo catchment and the whole area sourcing the studied basin have inherited their present relief from two epeirogenic uplift pulses of Late Cretaceous and Miocene ages.

URLhttp://www.sciencedirect.com/science/article/pii/S1464343X1500117X

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