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
... sequence of white - 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 ...
... sequence of white - 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 ...
Page 220
... sequence and marine invertebrates were recovered from the topmost cycle . The upward - fining cycles are interpreted ... sequence in the Weltevrede Formation , Howison's Poort . Fig . 5. Thin upward - fining sequence near the. 220 ANNALS ...
... sequence and marine invertebrates were recovered from the topmost cycle . The upward - fining cycles are interpreted ... sequence in the Weltevrede Formation , Howison's Poort . Fig . 5. Thin upward - fining sequence near the. 220 ANNALS ...
Page 229
... sequence : a vertical succession of sedimentary structures created by lateral migration of tidal inlets . Sedimentology 21 ( 2 ) : 291–323 . Loock , J. C. 1967. The stratigraphy of the Witteberg - Dwyka contact beds . University of ...
... sequence : a vertical succession of sedimentary structures created by lateral migration of tidal inlets . Sedimentology 21 ( 2 ) : 291–323 . Loock , J. C. 1967. The stratigraphy of the Witteberg - Dwyka contact beds . University of ...
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Common terms and phrases
abbreviated AFRICA articulate brachiopods barrier islands basal Witteberg beds benthic assemblages BENTHIC COMMUNITIES Blinkberg Formation Bokkeveld Group Boucot British Museum Natural carbonaceous shales Chonetes comma cross-bedded delta deposited Devonian rocks environmental External mould facies analysis Falkland Islands fauna 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 Orbiculoidea overlain paratypes parentheses pedicle valve Plectonotus sp punctuation quartz arenite unit registration number ripple cross-laminated sandstone Roman numerals salinity sandstones scientific name sediment SEDIMENTARY FACIES shoreline siltstone and shale Silurian and Devonian SOUTH AFRICAN MUSEUM specimens Spiriferid 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 vicinity of Touws volume number Wagen Drift Formation wash-over WELTEVREDE FORMATION Fig Western Cape yielded marine invertebrate