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
... carbonaceous shales . Plant fossils and trace fossils have been recorded . SEDIMENTARY FACIES In their summary of the depositional environments , Tankard et al . ( 1982 ) stated that the sedimentation in the lower part of the Witteberg ...
... carbonaceous shales . Plant fossils and trace fossils have been recorded . SEDIMENTARY FACIES In their summary of the depositional environments , Tankard et al . ( 1982 ) stated that the sedimentation in the lower part of the Witteberg ...
Page 222
... carbonaceous shales with silty layers , siderite nodules and numerous plant fragments . These probably formed in stagnant back - barrier lagoonal or marsh environments ( Fig . 6 ) . A similar detailed facies analysis is not available ...
... carbonaceous shales with silty layers , siderite nodules and numerous plant fragments . These probably formed in stagnant back - barrier lagoonal or marsh environments ( Fig . 6 ) . A similar detailed facies analysis is not available ...
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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