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
... Formation is the lowest unit of the Witteberg Group ( Fig . 2 ) . It consists essentially of siltstone and shale ... BLINKBERG FM marine fossils WAGEN DRIFT FM WITPOORT FORMATION marine fossils WELTEVREDE FORMATION Fig . 2. Stratigraphic ...
... Formation is the lowest unit of the Witteberg Group ( Fig . 2 ) . It consists essentially of siltstone and shale ... BLINKBERG FM marine fossils WAGEN DRIFT FM WITPOORT FORMATION marine fossils WELTEVREDE FORMATION Fig . 2. Stratigraphic ...
Page 218
... Formation is the Blinkberg Formation , an extremely mature quartz arenite unit , which contains some plant fossils . This in turn , is overlain by the Swartruggens Formation , a relatively thick heterolithic unit comprising siltstone ...
... Formation is the Blinkberg Formation , an extremely mature quartz arenite unit , which contains some plant fossils . This in turn , is overlain by the Swartruggens Formation , a relatively thick heterolithic unit comprising siltstone ...
Page 222
... Formation represents the subaqueous portion of a delta and that the overlying quartz arenites of the Blinkberg Formation are the products of reworking of the delta , much the same as Tankard & Barwis ( 1982 ) described from the ...
... Formation represents the subaqueous portion of a delta and that the overlying quartz arenites of the Blinkberg Formation are the products of reworking of the delta , much the same as Tankard & Barwis ( 1982 ) described from the ...
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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