Annals of the South African Museum, Volume 106 |
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Page 79
However, distinctive features such as the number of chambers in the final whorl,
the nature of the grains and cement composing the test wall, and even the
intensity of compaction (reflecting the thickness of the test wall) can be sufficient
to ...
However, distinctive features such as the number of chambers in the final whorl,
the nature of the grains and cement composing the test wall, and even the
intensity of compaction (reflecting the thickness of the test wall) can be sufficient
to ...
Page 82
Test periphery distinctly lobate throughout, very broadly rounded in cross-section.
Test subglobular in overall shape. Test wall composed of moderately sized, often
rather platy quartz grains with moderate cement. This morphotype differs from ...
Test periphery distinctly lobate throughout, very broadly rounded in cross-section.
Test subglobular in overall shape. Test wall composed of moderately sized, often
rather platy quartz grains with moderate cement. This morphotype differs from ...
Page 102
Test surface lightly roughened: test wall composed of moderate sized, angular
quartz grains set in medium quantities of cement. Remarks Gaudryinella
alexandria differs from G. sherlocki Bettenstaedt (1952), from the Barremian to
Early Albian ...
Test surface lightly roughened: test wall composed of moderate sized, angular
quartz grains set in medium quantities of cement. Remarks Gaudryinella
alexandria differs from G. sherlocki Bettenstaedt (1952), from the Barremian to
Early Albian ...
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Contents
Introduction | 5 |
Foraminiferal biozonation of the Sundays River Formation | 33 |
The Algoa Basin outcrops | 44 |
Copyright | |
3 other sections not shown
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Common terms and phrases
Agrio Formation Albian Ammobaculites 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 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 Holotype illustrated initial coil Kielbowicz Kirkwood Formation Lagena Late Hauterivian Biozone Late Valanginian Biozone Lenticulina lignite Lingulina lobate Loeblich & Tappan Magniez-Jannin 1975 Majunga Basin Masiuk & Viña McLachlan Mngazana Basin Musacchio Nodosaria occur offshore ornamentation ostracods Paratype Planularia Pletmos Basin Portlandian proloculus Radiolaria rare lignite Remarks Reuss Río Mayer Roemer SAM–PQ-MF shallow borehole shell side view silty SOEKOR negative South Africa southern species specimens Stratigraphic range Sundays River Formation sutures test periphery test wall Uitenhage Uitenhage to Graaff-Reinet weakly Zoetgeneugd Cliff outcrop