Annals of the South African Museum: Annale Van Die Suid-Afrikaanse Museum, Volume 106 |
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Page 11
comments on the clay compaction curve presented by Winter ( 1973 , fig . 3a ) , and disputed the resulting interpretation of an unconformity at the Kirkwood - Sundays River formational boundary . However , Shone ( 1978 ) instead ...
comments on the clay compaction curve presented by Winter ( 1973 , fig . 3a ) , and disputed the resulting interpretation of an unconformity at the Kirkwood - Sundays River formational boundary . However , Shone ( 1978 ) instead ...
Page 167
rapidity of sedimentation through the time period in South Africa , in contrast to that of the Speeton Clay and ... Preservation , however , is never as good as that seen in tests from the fine - grained , shallowly buried clays of ...
rapidity of sedimentation through the time period in South Africa , in contrast to that of the Speeton Clay and ... Preservation , however , is never as good as that seen in tests from the fine - grained , shallowly buried clays of ...
Page 200
Occurrence First described by Reuss ( 1863 ) from the ' Speeton Clay ' of northern Germany . Later records include : Gault Clay ( Albian ) of Folkestone ( Chapman 1894a ) ; latest Berriasian and Late Hauterivian of the Speeton Clay ...
Occurrence First described by Reuss ( 1863 ) from the ' Speeton Clay ' of northern Germany . Later records include : Gault Clay ( Albian ) of Folkestone ( Chapman 1894a ) ; latest Berriasian and Late Hauterivian of the Speeton Clay ...
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abundant Albian Algoa Basin Ammobaculites apertural appears Argentina assemblages Astacolus Barremian Bartenstein & Brand base Biozone Bb borehole chambers Clay close coil Colchester core Cretaceous depressed described distinct Dorothia dorsal Early Hauterivian environments Epistomina Espitalié & Sigal examples facing feet Figure final foraminifera genus grey claystone Haplophragmoides Holotype illustrated inflated initial interval Kimmeridgian Lagena Late Hauterivian Biozone Late Valanginian Biozone later Lenticulina lignite Lingulina localities lower Magniez-Jannin margin Masiuk McLachlan McLachlan et al middle Mngazana Nodosaria Occasional occur offshore ornamentation outcrop sample Paratype periphery Pletmos possess present probably rare referred Reinholdella Remarks Reuss ribs Roemer rounded seen shallow shelf shell side view similar SOEKOR South Africa southern species specimens Stratigraphic range studied Sundays River Formation surface sutures Tappan Uitenhage upper usually ventral weakly whorl wide Zone