Abstract
We report here relatively modern phosphogenesis on the continental margin off South Africa, where palaeontologically old limestone (middle Eocene–middle Miocene) has been phosphatized in late Pleistocene times (62–76 kyr) in an area of only moderate and seasonal present-day upwelling1,2. Previously, modern phosphogenesis had been reported as occurring only off Namibia3–15, Peru/Chile16–21 and very recently, east Australia22,23. This report, and those describing the late Quaternary east Australia phosphorite22,23, suggest that, contrary to established opinion, strongly enhanced upwelling may not be necessary for phosphorite formation and that oceanic phos-phogenic models need not be based exclusively on localized oceanographie regimes such as exist off Peru and Namibia.
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Birch, G., Thomson, J., McArthur, J. et al. Pleistocene phosphorites off the west coast of South Africa. Nature 302, 601–603 (1983). https://doi.org/10.1038/302601a0
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DOI: https://doi.org/10.1038/302601a0
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