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
... Pemberton ( 1984 ) , but differ significantly in detail . The differences are ascribed to reduced circulation resulting in anoxic conditions in parts of an ancient epeiric sea . Barren sandstone units in the Sardinia Bay strata ...
... Pemberton ( 1984 ) , but differ significantly in detail . The differences are ascribed to reduced circulation resulting in anoxic conditions in parts of an ancient epeiric sea . Barren sandstone units in the Sardinia Bay strata ...
Page 20
... 1984 : 219 ) . ICHNOFACIES MODELS AND DEPOSITIONAL ENVIRONMENT THE ICHNOFACIES CONCEPT Trace fossil assemblages are ... Pemberton 1984 ) seems entirely logical . It should be borne in 5cm Fig . 12. Weathered surface of a mudrock unit. 20 ...
... 1984 : 219 ) . ICHNOFACIES MODELS AND DEPOSITIONAL ENVIRONMENT THE ICHNOFACIES CONCEPT Trace fossil assemblages are ... Pemberton 1984 ) seems entirely logical . It should be borne in 5cm Fig . 12. Weathered surface of a mudrock unit. 20 ...
Page 21
... Pemberton ( 1984 : 198-199 ) is typified by the presence of burrows with rein- forced wall linings and a predominance of vertical shafts . Characteristic ichno- genera are Skolithos , Ophiomorpha and Diplocraterion . The wall linings ...
... Pemberton ( 1984 : 198-199 ) is typified by the presence of burrows with rein- forced wall linings and a predominance of vertical shafts . Characteristic ichno- genera are Skolithos , Ophiomorpha and Diplocraterion . The wall linings ...
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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