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
... delta of Texas and the São Francisco delta of Brazil ( Tankard & Barwis 1982 ) . Analysis of the sedimentary facies exposed in Howison's Poort , near Grahamstown ( Fig . 3 ) , shows that the upper part of the Weltevrede Formation ...
... delta of Texas and the São Francisco delta of Brazil ( Tankard & Barwis 1982 ) . Analysis of the sedimentary facies exposed in Howison's Poort , near Grahamstown ( Fig . 3 ) , shows that the upper part of the Weltevrede Formation ...
Page 220
... delta out - building and the remaining sediments of the Weltevrede Formation were deposited during a destructional phase . This involved transgressive marine reworking of the delta top ( Fisher et al . 1969 ) . The upper 70 m of the ...
... delta out - building and the remaining sediments of the Weltevrede Formation were deposited during a destructional phase . This involved transgressive marine reworking of the delta top ( Fisher et al . 1969 ) . The upper 70 m of the ...
Page 228
... delta lobe . The Wagen Drift Formation is taken to represent a prograding delta and its shales were deposited in a delta slope environment . REFERENCES BOUCOT , A. J. 1975. Evolution and extinction rate 228 ANNALS OF THE SOUTH AFRICAN ...
... delta lobe . The Wagen Drift Formation is taken to represent a prograding delta and its shales were deposited in a delta slope environment . REFERENCES BOUCOT , A. J. 1975. Evolution and extinction rate 228 ANNALS OF THE SOUTH AFRICAN ...
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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