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 220
... barrier islands that migrated landwards over the tidal - flat facies . The Witpoort Formation consists mostly of mature sandstones . In the basal 10-12 m these are brownish in colour , fine to medium grained , and display horizontal ...
... barrier islands that migrated landwards over the tidal - flat facies . The Witpoort Formation consists mostly of mature sandstones . In the basal 10-12 m these are brownish in colour , fine to medium grained , and display horizontal ...
Page 221
... barrier islands migrate landward and that scouring associated with wash - over is responsible for the initiation of ... barrier island sandstones , Witpoort Formation , Howison's Poort . SEDIMENTARY FACIES IN THE LOWER WITTEBERG GROUP 221.
... barrier islands migrate landward and that scouring associated with wash - over is responsible for the initiation of ... barrier island sandstones , Witpoort Formation , Howison's Poort . SEDIMENTARY FACIES IN THE LOWER WITTEBERG GROUP 221.
Page 222
... barrier lagoonal or marsh environments ( Fig . 6 ) . A similar detailed ... Islands and South American correlatives . The bivalves are too poorly ... Islands and Brazil , and the articulate brachiopod 3 B A E Fig . 7. Brachiopods from the ...
... barrier lagoonal or marsh environments ( Fig . 6 ) . A similar detailed ... Islands and South American correlatives . The bivalves are too poorly ... Islands and Brazil , and the articulate brachiopod 3 B A E Fig . 7. Brachiopods 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