Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumWest, Newman & Company for the trustees of the Museum, 1990 - Natural history |
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Page 218
... similar to those of the Bokkeveld Group , which have been interpreted as being the deposits of arcuate deltas subject to marine reworking similar to the present - day Brazos River delta of Texas and the São Francisco delta of Brazil ...
... similar to those of the Bokkeveld Group , which have been interpreted as being the deposits of arcuate deltas subject to marine reworking similar to the present - day Brazos River delta of Texas and the São Francisco delta of Brazil ...
Page 222
... similar detailed facies analysis is not available for the lower part of the Witteberg Group in the Western Cape but Theron ( 1970 ) stated that the basal Witteberg beds are part of a regressive cycle that follows directly on from similar ...
... similar detailed facies analysis is not available for the lower part of the Witteberg Group in the Western Cape but Theron ( 1970 ) stated that the basal Witteberg beds are part of a regressive cycle that follows directly on from similar ...
Page 228
... similar facies in the underlying Bokkeveld Group , to suggest a Givetian or Frasnian age for the lower part of the Witteberg Group . Such an age determination agrees well with the suggestion of Cooper ( 1982 , 1986 ) , who used eustatic ...
... similar facies in the underlying Bokkeveld Group , to suggest a Givetian or Frasnian age for the lower part of the Witteberg Group . Such an age determination agrees well with the suggestion of Cooper ( 1982 , 1986 ) , who used eustatic ...
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Common terms and phrases
abbreviated AFRICA articulate brachiopods barrier islands benthic assemblages BENTHIC COMMUNITIES bicuspidata Gould bivalves bivalves and possible Blinkberg Formation Bokkeveld Group Boucot British Museum Natural carbonaceous shales Chonetes Chonetid Community comma cross-bedded deeper-water subtidal conditions delta deposited Devonian rocks environmental External mould facies analysis Falkland Islands fauna Formation near Touws Frasnian gastropod genus Givetian Grahamstown high-diversity holotype homalonotid trilobite horizontal lamination Howison's Poort inarticulate infaunal interpreted Leda Lingula lepta LOWER WITTEBERG GROUP Museum Natural History namacolus Orbiculoidea overlain paratypes parentheses pedicle valve punctuation salinity sandstones scientific name sediment SEDIMENTARY FACIES shoreline shouldered italics siltstone and shale Silurian and Devonian SOUTH AFRICAN MUSEUM specimens Spiriferid Community Stratigraphic subheadings are shouldered suspension feeders SWARTRUGGENS FORMATION Synonymy Tankard & Barwis taxa Theron thin tidal tidal-flat Touws River trace fossils Trigonoglossa Tropidoleptus sp Upper Devonian upward-fining cycles Wagen Drift Formation wash-over Weltevrede Formation Western Cape Witpoort Formation yielded marine invertebrate