Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum |
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Page 220
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 destructional phase . This involved transgressive marine
reworking ...
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 destructional phase . This involved transgressive marine
reworking ...
Page 221
stones were probably deposited by wash - over processes into the tidal - flat area
. Reinson ( 1984 ) has noted that wash - over is one of the main processes by
which barrier islands migrate landward and that scouring associated with wash ...
stones were probably deposited by wash - over processes into the tidal - flat area
. Reinson ( 1984 ) has noted that wash - over is one of the main processes by
which barrier islands migrate landward and that scouring associated with wash ...
Page 228
The shales at the top of the Weltevrede Formation at Howison's Poort are thought
to have been deposited in intertidal flats established during transgressive
reworking of an abandoned delta lobe . The Wagen Drift Formation is taken to ...
The shales at the top of the Weltevrede Formation at Howison's Poort are thought
to have been deposited in intertidal flats established during transgressive
reworking of an abandoned delta lobe . The Wagen Drift Formation is taken to ...
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Common terms and phrases
abbreviated according AFRICA articulate brachiopods association author's name authors basal bedding benthic assemblages BENTHIC COMMUNITIES bivalves Blinkberg Bokkeveld Group Boucot capital collected communities consists containing cycles delta deposited described Devonian Devonian rocks differences DISTRIBUTARY diversity dominated Eastern environment environmental fauna figures gastropod homalonotid Howison's Poort illustrations inarticulate indicate infaunal interpreted intertidal Islands italics known letters Lingula localities lower major marine marine invertebrates mark Member Middle mould Museum Natural History nearshore Note occur original parentheses placed plant fossils Plectonotus punctuation quartz arenites range recorded references represent reworking salinity sandstones scientific sediment SEDIMENTARY FACIES separates sequence shales shallow siltstone similar Smith South African species specimens Stratigraphic subtidal suggest Tables Tankard thick thin Touws River trace fossils trilobite unit upper valve Wagen Drift Formation Weltevrede Formation Western Cape Witpoort Formation Witteberg Group yielded Zoophycos