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 12
... sedimentary structures that denote high - energy hydraulic conditions normally associated with beaches , tidal sand - waves ( cf. Allen 1980 ) , storm - affected shelf floors , and ebbing storm - surge turbidity flows ( Shone 1983 ...
... sedimentary structures that denote high - energy hydraulic conditions normally associated with beaches , tidal sand - waves ( cf. Allen 1980 ) , storm - affected shelf floors , and ebbing storm - surge turbidity flows ( Shone 1983 ...
Page 21
... sediment . Sedimentary structures associated with this ichno- facies include near - horizontal lamination , ripple laminae , trough cross - bedding , and flaser- , wavy- and lenticular - bedding . Biogenic structures are subordinate ...
... sediment . Sedimentary structures associated with this ichno- facies include near - horizontal lamination , ripple laminae , trough cross - bedding , and flaser- , wavy- and lenticular - bedding . Biogenic structures are subordinate ...
Page 23
... sedimentary structures in trace fossil association 1 indicate moderate wave and current activity , which could have been responsible for restricting both the number of sediment - dwelling organisms and the degree of bioturbation . The ...
... sedimentary structures in trace fossil association 1 indicate moderate wave and current activity , which could have been responsible for restricting both the number of sediment - dwelling organisms and the degree of bioturbation . The ...
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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