Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 106South African Museum, 2003 - Natural history |
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Page 109
... Pletmos Basin borehole PB - A1 ( McLachlan et al . 1976b ) . In Argentina the species is known from the Valanginian Springhill Formation of southern Patagonia ( Kielbowicz et al . 1983 ) . The species occurs extensively in the Pletmos ...
... Pletmos Basin borehole PB - A1 ( McLachlan et al . 1976b ) . In Argentina the species is known from the Valanginian Springhill Formation of southern Patagonia ( Kielbowicz et al . 1983 ) . The species occurs extensively in the Pletmos ...
Page 129
... Pletmos , Gamtoos and Algoa basins off South Africa , where it is particularly frequent in Early and Late Valanginian rocks ( Biozones E to B ) . The extensive development of deep marine , anoxic or poorly oxygenated sea - floor ...
... Pletmos , Gamtoos and Algoa basins off South Africa , where it is particularly frequent in Early and Late Valanginian rocks ( Biozones E to B ) . The extensive development of deep marine , anoxic or poorly oxygenated sea - floor ...
Page 171
... Pletmos , Gamtoos , Algoa and Mngazana basins have shown that this is an over - simplification , and the secondary extensions of the sutural ribs may become quite complex and markedly variable , as described above . However , the single ...
... Pletmos , Gamtoos , Algoa and Mngazana basins have shown that this is an over - simplification , and the secondary extensions of the sutural ribs may become quite complex and markedly variable , as described above . However , the single ...
Contents
Introduction | 5 |
Foraminiferal biozonation of the Sundays River Formation | 33 |
The Algoa Basin outcrops | 44 |
Copyright | |
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Agrio Formation Albian ammonites apertural view Aptian Argentina assemblages Astacolus Barremian Bartenstein & Brand Berriasian Bettenstaedt borehole borehole PB-A1 Citharina Cliff outcrop sample Coega Coega Brick Pits core Dentalina DIEGO Dorothia dorsal margin down-hole appearance Early Barremian Early Cretaceous Early Hauterivian environments Eoguttulina Epistomina caracolla Espitalié & Sigal feet VII Figure final chamber final whorl foraminifera genus Graaff-Reinet grey claystone Haplophragmoides sp hofkeri Holotype illustrated Kimmeridgian Kirkwood Formation Lagena Late Hauterivian Biozone Late Valanginian Biozone lignite Lingulina Loeblich & Tappan Magniez-Jannin 1975 Majunga Basin Masiuk & Viña McLachlan Mngazana Basin Musacchio Nodosaria occur offshore ornamentation ostracods Paratype Planularia Pletmos Basin Portlandian rare lignite Reinholdella valendisensis Remarks Reuss Río Mayer Roemer shallow borehole shelf shell side view silty SOEKOR negative South Africa southern species specimens Stratigraphic range Sundays River Formation sutures test periphery test wall Trochammina Uitenhage Uitenhage to Graaff-Reinet Vaginulinopsis weakly Zoetgeneugd Cliff outcrop