oa South African Journal of Geology - Turbidites and arthropod trackways in the Dwyka Glacial deposits (early Permian) of Southern Africa

Volume 78 Number 2
  • ISSN : 1012-0750
  • E-ISSN: 1996-8590



Arthropod trackways have previously been described from glacial varves on the eastern side of South Africa. On the western side the glacial deposits in which the trackways are preserved show sole structure evidence of subaqueous mass-transport. They are tentatively regarded as small-scale turbidity current deposits. Umfolozia sinuosa Savage 1 971 and Maculichna varia gen. et sp. nov. are the most common trackways in the Dwyka.

However, the new ichnogenus is scarcely represented in the east. It is also much less conspicuous than Umfolozia in the overlying non-glacial Ecca deposits. As the glacial deposits in the east are younger than those in the west, it is probable that the creatures responsible for the Maculichna varia trackways were already on the decline by the time the glacial sediments in the east were accumulating. As such, the association between M. varia and the "turbidites" in the west must be co-incidental.

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