Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumWest, Newman & Company for the trustees of the Museum, 1991 - Natural history |
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Page 11
... Restricted biota -shallow marine sediment - dwellers INNER SHELF MEGARIPPLE FACIES INNER SHELF MUD AND SAND SHELF SAND WAVE FACIES deposited by tidal currents with a degree of time - velocity_symmetry INNER SHELF MUD AND SAND AND ...
... Restricted biota -shallow marine sediment - dwellers INNER SHELF MEGARIPPLE FACIES INNER SHELF MUD AND SAND SHELF SAND WAVE FACIES deposited by tidal currents with a degree of time - velocity_symmetry INNER SHELF MUD AND SAND AND ...
Page 23
... restricted biota , at worst by no biota at all . Mudrock units in the Sardinia Bay Formation containing disseminated pyrite , a possible indicator of anoxic and hypersaline conditions ( cf. Berner et al . 1979 ) , do in fact include ...
... restricted biota , at worst by no biota at all . Mudrock units in the Sardinia Bay Formation containing disseminated pyrite , a possible indicator of anoxic and hypersaline conditions ( cf. Berner et al . 1979 ) , do in fact include ...
Page 24
... restricted ichnofauna ( Skolithos and ? Fascifodina ) . The extensive bioturbation that occurred probably indicates long - term burrowing in a low - energy environment in which ichnocoenoses were seldom displaced . Bed- ding traces ...
... restricted ichnofauna ( Skolithos and ? Fascifodina ) . The extensive bioturbation that occurred probably indicates long - term burrowing in a low - energy environment in which ichnocoenoses were seldom displaced . Bed- ding traces ...
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Common terms and phrases
abbreviated bioturbated burrow fill callianassid decapods Cape Town Chondrites cm Fig cm in diameter colonization by sediment-dwellers correlation cross-section Cruziana ichnofacies model currents and waves decapods depositional environment Description Differential weathering Diplocraterion disseminated pyrite EARLY ORDOVICIAN SARDINIA Ekdale epeiric sea FACIES INTERPRETATIONS Fascifodina Figure Frey & Pemberton Gastropoda Häntzschel 1975 holotype ichno ichnogenus indicate INNER SHELF MEGARIPPLE INNER SHELF MUD INNERMOST SHELF MUD interval Irregular U-tubes Leda MUD AND SAND Mudrock units namacolus occur Ophiomorpha paper paratypes parentheses Pemberton 1984 Port Elizabeth punctuation quartzite references relict sedimentary structures Restricted biota rocks Roman numerals sandstone sole Sardinia Bay Formation scientific name sediment sediment-dwelling organisms sedimentary structures Seilacher 1967 shafts shallow marine Shone shoreface Skolithos ichnofacies Skolithos tubes sole marking SOUTH AFRICAN MUSEUM Spreiten demarcated sub-horizontal Synonymy Table Mountain Group Thalassinoides tidal currents trace fossil assemblages trace fossil association traces resembling Upper Sardinia Bay V-shaped pattern Vermiform sand-filled tubes vertical burrows