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 10
... strata represent part of the lowermost Table Moun- tain Group in the Port Elizabeth area . The probable base of the Table Mountain Group is represented by an outcrop of granite overlain by conglomerates con- taining boulders of granite ...
... strata represent part of the lowermost Table Moun- tain Group in the Port Elizabeth area . The probable base of the Table Mountain Group is represented by an outcrop of granite overlain by conglomerates con- taining boulders of granite ...
Page 12
... strata . The descriptions that follow are set out in accordance with the problems outlined above . ? OPHIOMORPHA Description Large sub - cylindrical sand - filled vertical burrows with dark pyritic linings occur as endichnial traces in ...
... strata . The descriptions that follow are set out in accordance with the problems outlined above . ? OPHIOMORPHA Description Large sub - cylindrical sand - filled vertical burrows with dark pyritic linings occur as endichnial traces in ...
Page 18
... strata of Upper Precambrian to Triassic age ( Häntzschel 1975 : W55 ) and younger ( Shone 1978 ) . HORIZONTAL TRACES ON UPPER BEDDING SURFACES Description Rare upper bedding surface exposures 45-50 m above the base of the Sar- dinia Bay ...
... strata of Upper Precambrian to Triassic age ( Häntzschel 1975 : W55 ) and younger ( Shone 1978 ) . HORIZONTAL TRACES ON UPPER BEDDING SURFACES Description Rare upper bedding surface exposures 45-50 m above the base of the Sar- dinia Bay ...
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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