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 9
... occur on bedding surfaces . Three trace fossil associations are recognized in the Sardinia Bay Formation . Two of these correspond broadly with the Cru- ziana and Skolithos ichnofacies models of Seilacher ( 1967 ) and Frey & Pemberton ...
... occur on bedding surfaces . Three trace fossil associations are recognized in the Sardinia Bay Formation . Two of these correspond broadly with the Cru- ziana and Skolithos ichnofacies models of Seilacher ( 1967 ) and Frey & Pemberton ...
Page 15
... occur 48 m from the base of the Sardinia Bay Formation . Spreiten can be discerned between the limbs of one U - tube ( Fig . 7 ) . spreiten 10 cm Fig . 6. Spreiten demarcating the former positions of U - tubes indicating upward ...
... occur 48 m from the base of the Sardinia Bay Formation . Spreiten can be discerned between the limbs of one U - tube ( Fig . 7 ) . spreiten 10 cm Fig . 6. Spreiten demarcating the former positions of U - tubes indicating upward ...
Page 18
... vertical tunnel sections weigh heavily in favour of Chondrites as the prob- able ichnogenus . Chondrites is known to occur in strata from Cambrian to Ter- 10 cm Fig . 10. Photograph ( top ) and 18 ANNALS OF THE SOUTH AFRICAN MUSEUM.
... vertical tunnel sections weigh heavily in favour of Chondrites as the prob- able ichnogenus . Chondrites is known to occur in strata from Cambrian to Ter- 10 cm Fig . 10. Photograph ( top ) and 18 ANNALS OF THE SOUTH AFRICAN MUSEUM.
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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