. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history; Natuurlijke historie; Sociale geschiedenis; Culturele antropologie. BLIND SPECIES ZULULAND OUTCROP AGES B&C C B&C C B&C Fig. 70. Population and stratigraphical data plotted on Cytheracea/Cytherellidae/Bairdiacea + Cypridacea triangular diagrams. Assemblage field boundaries shown by dotted lines—designa- tion as in Figures 68 and 69. A. Distribution of blind species of cytheraceans: small figures show numbers of blind species per sample, areas enclosing 3 or more species/sample are shaded;
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history; Natuurlijke historie; Sociale geschiedenis; Culturele antropologie. BLIND SPECIES ZULULAND OUTCROP AGES B&C C B&C C B&C Fig. 70. Population and stratigraphical data plotted on Cytheracea/Cytherellidae/Bairdiacea + Cypridacea triangular diagrams. Assemblage field boundaries shown by dotted lines—designa- tion as in Figures 68 and 69. A. Distribution of blind species of cytheraceans: small figures show numbers of blind species per sample, areas enclosing 3 or more species/sample are shaded; large figures show numbers of different species per ostracod assemblage field. B-C. Ages of samples within ostracod assemblage fields; shading identifies areas enclosing samples of same age; CI = Campanian I, etc. B. Richards Bay BH-9 borehole. C. Zululand outcrops (Monzi/Mfolozi/Nibela). Having discussed the nature of the ostracod assemblages and the sedimentary environments that they represent, it remains to see how these are distributed in time and space in Zululand. From Figure 67, it is clear that the development of assemblages 4a and 5a, 5b in the Richards Bay BH-9 borehole, and 4b and 5a, 5b at outcrops farther north in Zululand were not synchronous: the moderate to deep-water environments were established earlier in the south (Richards Bay area). These relationships can be graphically presented on the CCBC diagram (Fig. 70B-C), which shows the temporal and spatial distribution of the various sedimentary environments. For example, the occupation of field 4b during Campanian II times in the Zululand outcrops (Fig. 70C) was synchro-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
Size: 1213px × 2060px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
