Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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Page 220
This involved transgressive marine reworking of the delta top ( Fisher et al . 1969 ) . The upper 70 m of the Weltevrede Formation comprise quartz arenites , siltstones and shales arranged in a number of upward - fining cycles ( Fig .
This involved transgressive marine reworking of the delta top ( Fisher et al . 1969 ) . The upper 70 m of the Weltevrede Formation comprise quartz arenites , siltstones and shales arranged in a number of upward - fining cycles ( Fig .
Page 229
ELLIOT , T. 1974. Interdistributary bay sequences and their genesis . Sedimentology 21 : 611–622 . FISHER , W. L. , BROWN , L. F. , SCOTT , A. J. & McGoWEN , J. H. 1969. Delta systems in the exploration for oil and gas .
ELLIOT , T. 1974. Interdistributary bay sequences and their genesis . Sedimentology 21 : 611–622 . FISHER , W. L. , BROWN , L. F. , SCOTT , A. J. & McGoWEN , J. H. 1969. Delta systems in the exploration for oil and gas .
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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