Abstract
Angular to well-rounded pebbles and cobbles have been observed along the southwest coast of South Africa, attached to holdfasts of three species of kelp:Ecklonia maxima, Laminaria pallida, andLaminaria schinzii. A kelp-rafted clast has been dredged from the outer shelf and other clasts have been observedin situ in up to 5 m of water near Cape Town. The clasts have been found on both rocky and sandy shores as well as in a large backshore lagoon on the exposed Atlantic coast of the Cape Peninsula. Isolated clasts in a mid-Holocene lagoon were probably rafted ashore during winter storms in the mid-Holocene.
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Woodborne, M.W., Rogers, J. & Jarman, N. The geological significance of kelp-rafted rock along the west coast of South Africa. Geo-Marine Letters 9, 109–118 (1989). https://doi.org/10.1007/BF02430432
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DOI: https://doi.org/10.1007/BF02430432