oa Madoqua - Fluvio-marine deposits south-east of Swakopmund, South West Africa

Volume 9, Issue 3
  • ISSN : 1011-5498



Up to two conglomerate layers carrying specimens of Striostrea margaritacea are interbedded in a layered deposit of unconsolidated and gypsum-cemented sand which occurs up to 50 m above sea-level. Size distribution analysis of the sand and surface characteristics of the sand grains indicate sheet- flood action and rapid buriaI, but aeolian and marine reworking is evident and mixing of fluviatile, aeolian and marine sand populations occurred in a fluviomarine environment. The Iittoral fauna suggests freely circulating sea water during periods of limited detrital supply.

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