Abstract
THREE major elements were involved in the evolution of oceanic circulation during the Cainozoic. The first of these was the diminishing role of oceanic meridional circulation in equatorial areas, the second was the development of circum-Antarctic circulation and the third involves the development of the present-day system of bottom waters of the world ocean, the ‘psychrosphere’1,2. Because deep bottom waters are mostly derived from the polar regions, their characteristics, such as temperature, reflect surface conditions at high latitudes3. Past temperature changes of deep oceanic waters, and thus of polar surface waters, can be determined from the oxygen isotopic composition of deep-dwelling benthonic microfossils3,4. A deep-sea palaeo-temperature record has been established4 for the past 54 Myr based on DSDP sites in the sub-Antarctic; detailed arguments4 give evidence that the Antarctic ice sheet developed during the Middle Miocene. Previous to this, however, a significant 5 °C decline in bottom-water temperature is recorded close to the Eocene–Oligocene boundary and is considered4 to represent the onset of Antarctic bottom-water formation at temperatures close to freezing. This heralds the beginning of the modern thermo-haline circulation and is thus one of the most important palaeo-oceanographic events in the Cainozoic. We examine here in more detail the palaeotemperature event near the Eocene-Oligocene boundary, the latter having an age of 38 Myr (ref. 5).
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References
Brunn, A. F., Mem. geol Soc. Am., 67, 641–672 (1957).
Benson, R. H., Lethaia, 8, 69–83 (1975).
Emiliani, C., Science, 119, 853–855 (1954).
Shackleton, N. J., and Kennett, J. P., in Init. Rep. Deep Sea Drilling Project, 29, 743–755 (1975).
Berggren, W. A., Lethaia, 5, 195–215 (1972).
Kennett, J. P., et al., Init. Rep. Deep Sea Drilling Project, 29, 1197 (1975).
Kennett, J. P., et al., Init. Rep. Deep Sea Drilling Project, 29, 1155–1169 (1975).
Shackleton, N. J., and Kennett, J. P., Init. Rep. Deep Sea Drilling Project, 29, 801–807 (1975).
Jenkins, D. G., Init. Rep. Deep Sea Drilling Project, 29, 499–467 (1975).
Edwards, A. R., and Perch-Nielsen, K., Init. Rep. Deep Sea Drilling Project, 29, 469–539 (1975).
Devereux, I., N. Z. J. Sci., 10, 988–1011 (1967).
Savin, S. M., Douglas, R. G., and Stehli, F. G., Bull. geol. Soc. Am., 86, 1499–1510 (1975).
Margolis, S. V., Kroopnick, P. M., Goodney, D. E., Dudley, W. C., and Mahoney, M. E., Science, 189, 555–557 (1975).
Margolis, S. V., and Kennett, J. P., Science, 170, 1085–1087 (1970).
Rutford, R. H., Craddock, C., Armstrong, R. L., and White, C., in Antarctic Geology and Geophysics (edit. by Adie, R. J.), 239–250 (Universitetsforlaget, Oslo, 1972).
LeMasurier, W. E., in Antarctic Geology and Geophysics (edit. by Adie, R. J.), 251–259 (Universitetsforlaget, Oslo, 1972).
Hayes, D. E., and Frakes, L. A., Init. Rep. Deep Sea Drilling Project, 28, 919–942 (1975).
Denton, G. H., Armstrong, R. L., and Stuiver, M., in The late Cenozoic glacial ages (edit. by Turekian, K. K.), 267–306 (1971).
Douglas, R. G., A. Mtg geol. Soc. Am., Dallas, Texas, 603 (1973) (abst.).
Berggren, W. A., Micropaleontology, 15, 351–365 (1969).
Foster, R. J., Nature, 249, 751 (1974).
Haq, B. U., and Lohmann, G. P., Marine Micropaleontology (in the press).
Kennett, J. P., et al., Nature phys. Sci., 239, 51–55 (1972).
Edwards, A. R., Init. Rep. Deep Sea Drilling Project, 21, 701–720 (1973).
Moore, T. C., Jr, van Andel, T. H., Sancetta, C., and Pisias, N., in Marine Plankton and Sediments (edit. by Riedel, W. R., and Saito, T.) (American Museum of Natural History Press, in the press).
Heath, G. R., Bull. geol. Soc. Am., 80, 689–694 (1969).
Moore, T. C., Geotimes, 17, 29–31 (1972).
van Andel, T. H., Heath, G. R., and Moore, T. C., Jr, Mem. geol. Soc. Am., 143, 134 pp. (1975).
Berger, W. H., and Winterer, E. L., in Pelagic Sediments on Land and under the Sea (edit. by Hsu, K. J., and Jenkyns, H. C.), 11–48 (Blackwell, Oxford, 1974).
Lamb, J. L., and Hickernell, R. L., in Pacific Coast Miocene Biostratigraphy (edit. by Stinemeyer, E. H., and Church, C. C.) (SEPM, Bakersfield, California, 1972).
Kennett, J. P., et al., Science, 186, 144–147 (1974).
Hornibrook, N. de B., and Edwards, A. R., in Proc. II Planktonic Conference, Roma (edit. by Farinacci, A.), 649–659 (1970).
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KENNETT, J., SHACKLETON, N. Oxygen isotopic evidence for the development of the psychrosphere 38 Myr ago. Nature 260, 513–515 (1976). https://doi.org/10.1038/260513a0
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DOI: https://doi.org/10.1038/260513a0
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