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 217
... weathering , unevenly bedded , quartz arenites separated by thin beds of laminated siltstone . The sandstones show occasional cross - bedding and contain numerous examples of the trace fossil Zoophycos ( Spirophyton ) . The upper ...
... weathering , unevenly bedded , quartz arenites separated by thin beds of laminated siltstone . The sandstones show occasional cross - bedding and contain numerous examples of the trace fossil Zoophycos ( Spirophyton ) . The upper ...
Page 218
... weathering quartz arenites with thin shale partings and containing plant fossils . In the Eastern Cape the lateral equivalent of the Wagen Drift , Blinkberg and Swartruggens formations is the Weltevrede Formation ( Fig . 2 ) . It is a ...
... weathering quartz arenites with thin shale partings and containing plant fossils . In the Eastern Cape the lateral equivalent of the Wagen Drift , Blinkberg and Swartruggens formations is the Weltevrede Formation ( Fig . 2 ) . It is a ...
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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