Annals of the South African Museum: Annale Van Die Suid-Afrikaanse MuseumWest, Newman & Company for the trustees of the Museum, 1990 - Natural history |
From inside the book
Results 1-3 of 9
Page 215
... Formation . The top part of the Weltevrede Formation is interpreted as having formed in back - barrier tidal flats during transgressive reworking of a delta top . In the Western Cape , two localities in the Wagen Drift Formation have ...
... Formation . The top part of the Weltevrede Formation is interpreted as having formed in back - barrier tidal flats during transgressive reworking of a delta top . In the Western Cape , two localities in the Wagen Drift Formation have ...
Page 218
... Weltevrede Subgroup is occupied by the Witpoort Formation , a thick sequence of white - weathering quartz arenites with thin shale partings and containing plant fossils . In the Eastern Cape the lateral equivalent of the Wagen Drift ...
... Weltevrede Subgroup is occupied by the Witpoort Formation , a thick sequence of white - weathering quartz arenites with thin shale partings and containing plant fossils . In the Eastern Cape the lateral equivalent of the Wagen Drift ...
Page 220
... 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 Weltevrede Formation comprise quartz arenites , siltstones ...
... 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 Weltevrede Formation comprise quartz arenites , siltstones ...
Other editions - View all
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