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
... truncated by a major erosion surface , but it is thought to be part of an inter - distributary bay fill ( Elliot 1974 ) . SEDIMENT . GRAIN SIZE PALAEOCURRENT COLUMN TRENDS - DIRECTIONS ENVIRONMENTAL 218 ANNALS OF THE SOUTH AFRICAN MUSEUM.
... truncated by a major erosion surface , but it is thought to be part of an inter - distributary bay fill ( Elliot 1974 ) . SEDIMENT . GRAIN SIZE PALAEOCURRENT COLUMN TRENDS - DIRECTIONS ENVIRONMENTAL 218 ANNALS OF THE SOUTH AFRICAN MUSEUM.
Page 219
... MOUTH BAR Fig . 3. Stratigraphic log of about 100 m of strata in Howison's Poort , near Grahamstown . The major erosion surface marks the end of the constructional SEDIMENTARY FACIES IN THE LOWER WITTEBERG GROUP 219.
... MOUTH BAR Fig . 3. Stratigraphic log of about 100 m of strata in Howison's Poort , near Grahamstown . The major erosion surface marks the end of the constructional SEDIMENTARY FACIES IN THE LOWER WITTEBERG GROUP 219.
Page 220
Annale Van Die Suid-Afrikaanse Museum South African Museum. The major erosion surface marks the end of the constructional phase of delta out - building and the remaining sediments of the Weltevrede Formation were deposited during a ...
Annale Van Die Suid-Afrikaanse Museum South African Museum. The major erosion surface marks the end of the constructional phase of delta out - building and the remaining sediments of the Weltevrede Formation were deposited during 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