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
... INTERPRETATIONS SHALLOW WATER TURBIDITES deposited by a density current generated via wave loading liquefaction and ebbing storm surge INNER SHELF MUD AND SAND deposited under the influence of tidal currents local wind - generated ...
... INTERPRETATIONS SHALLOW WATER TURBIDITES deposited by a density current generated via wave loading liquefaction and ebbing storm surge INNER SHELF MUD AND SAND deposited under the influence of tidal currents local wind - generated ...
Page 16
... Interpretation These are probably Skolithos tubes ( Upper Precambrian - Lower Creta- ceous ) , usually attributed to the activities of marine worms but of uncertain origin ( Häntzschel 1975 : W108 ) . Skolithos tubes are widespread in ...
... Interpretation These are probably Skolithos tubes ( Upper Precambrian - Lower Creta- ceous ) , usually attributed to the activities of marine worms but of uncertain origin ( Häntzschel 1975 : W108 ) . Skolithos tubes are widespread in ...
Page 18
... Interpretation The V - shaped pattern of scratch marks deduced from the sole marking ( Fig . 10 ) is broadly suggestive of the trace fossil Cruziana , but lacks the typical bilobed morphology of the ichnogenus . It is nevertheless ...
... Interpretation The V - shaped pattern of scratch marks deduced from the sole marking ( Fig . 10 ) is broadly suggestive of the trace fossil Cruziana , but lacks the typical bilobed morphology of the ichnogenus . It is nevertheless ...
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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