Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumWest, Newman & Company for the trustees of the Museum, 1991 - Natural history |
From inside the book
Results 1-3 of 6
Page 15
... Upper Sardinia Bay Formation ( see Fig . 2 ) . Tube cross - sections are oval to roughly circular . The tubes are gen- erally crowded to the extent that the internal lamination of the host bed is virtually ... SARDINIA BAY FORMATION 15.
... Upper Sardinia Bay Formation ( see Fig . 2 ) . Tube cross - sections are oval to roughly circular . The tubes are gen- erally crowded to the extent that the internal lamination of the host bed is virtually ... SARDINIA BAY FORMATION 15.
Page 16
... Upper Sardinia Bay Formation . Individual tubes tend to straighten and become sub - vertical upwards . Interpretation The vermiform traces described above resemble lower parts of the ichno- genus Fascifodina , the upper parts of which ...
... Upper Sardinia Bay Formation . Individual tubes tend to straighten and become sub - vertical upwards . Interpretation The vermiform traces described above resemble lower parts of the ichno- genus Fascifodina , the upper parts of which ...
Page 17
... massive texture as a result of the bioturbation . Fig . 9. Vermiform sand - filled tubes resembling Fascifodina on the basal surface of a sand- stone , Upper Sardinia Bay Formation . TRACE FOSSILS OF THE SARDINIA BAY FORMATION 17.
... massive texture as a result of the bioturbation . Fig . 9. Vermiform sand - filled tubes resembling Fascifodina on the basal surface of a sand- stone , Upper Sardinia Bay Formation . TRACE FOSSILS OF THE SARDINIA BAY FORMATION 17.
Other editions - View all
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