Abstract
A KNOWLEDGE of the age of marine sediments is necessary to determine the timing of events and rates of processes in the marine realm, and the relationships among marine and other climatically sensitive records. The establishment of an accurate chronology for Pleistocene marine sediments beyond the range of radiocarbon dating (approximately the past 45 kyr) has therefore been a goal of palaeoceanographers for decades. Early attempts1,2 based on measurements of the radionuclides 230Th and 231Pa were beset with problems, and subsequent studies focused on tying fluctuations in marine sediment oxygen-isotope records to events such as the formation of coral reef terraces and changes in the Earth's magnetic polarity3,4, and tuning the resultant chronologies to the Earth's orbitally driven insolation variations5–8. But these chronologies (especially the age and duration of the last interglacial period) have been challenged by several studies9–12, raising questions about the fundamental cause of Pleistocene climate fluctuations. Here we report the direct U–Th dating of aragonite-rich marine sediments from the Bahamas, and present an accurately dated marine oxygen-isotope record for the last two interglacials. We obtain dates of 120–127 kyr BP for the last interglacial and 189–190 kyr BP for the late stage 7 interglacial. These dates are in accord with the general theory of orbitally forced climate fluctuations and demonstrate the potential of our direct-dating approach for developing an absolute chronology for the Pleistocene marine oxygen-isotope record.
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Sackett, W. M. Science 132, 1761–1762 (1960).
Roshott, J. N., Emiliani, C., Geiss, J., Koczy, F. F. & Wangersky, P. J. J. Geol. 69, 162–185 (1961).
Mesolella, K. J., Matthews, R. K., Broecker, W. S. & Thurber, D. L. J. Geol. 77, 250–274 (1969).
Shackleton, N. J. & Opdyke, N. D. Quat Res. 3, 39–55 (1973).
Hays, J. D., Imbrie, J. & Shackleton, N. J. Science 194, 1121–1132 (1976).
Imbrie, J. et al. in Milankovitch and Climate (eds Berger, A. et al.) 269–305 (Reidel, Dordrecht, 1984).
Martinson, D. G. et al. Quat. Res. 27, 1–29 (1987).
Shackleton, N. J., Berger, A. & Peltier, W. R. Trans. Roy. Soc. Edinburgh 81, 251–261 (1990).
Jouzel, J. et al. Nature 364, 407–412 (1993).
Ludwig, K. R. et al. Science 258, 284–287 (1992).
Winograd, I. J. et al. Science 258, 255–260 (1992).
Szabo, B. J., Ludwig, K. R., Muhs, D. R. & Simmons, K. R. Science 266, 93–96 (1994).
Delaney, M. L. & Boyle, E. A. Earth Planet. Sci. Lett. 62, 258–262 (1983).
Russell, A. D., Emberson, S., Nelson, B. K., Erez, J. & Lea, D. W. Geochim. Cosmochim. Acta 58, 671–681 (1994).
Henderson, G. M. & O'Nions, R. K. Geochim. Cosmochim. Acta 59, 4685–4695 (1995).
Sackett, W. M., Mo, T., Spalding, R. F. & Exner, M. E. in Radioactive Contamination of the Marine Environment 757–769 (Int. Atomic Energy Agency, Vienna, 1993).
Milliman, J. D. Marine Carbonates (Springer, Berlin, 1974).
Neumann, A. C. & Land, L. S. J. Sedim. Petrol. 45, 763–786 (1975).
Droxler, A. W., Schlager, W. & Wallon, C. C. Geology 11, 235–239 (1983).
Boardman, M. R. & Neumann, A. C. J. Sedim. Petrol. 54, 1110–1123 (1984).
Boardman, M. R. et al. Geology 14, 28–31 (1986).
Burns, S. J. & Neumann, A. C. Mar. Geol. 77, 277–286 (1987).
Slowey, N. C. & Curry, W. B. Nature 358, 665–668 (1992).
Slowey, N. C. & Curry, W. B. Paleoceanography 6, 609–619 (1991).
Slowey, N. C. & Curry, W. B. Paleoceanography 10, 715–732 (1995).
Shackleton, N. J., Hall, M. A., Pate, D., Meynadier, L. & Valet, P. Paleoceanography 8, 141–148 (1993).
Taylor, S. R. & McClennan, S. M. The Continental Crust: Its Composition and Evolution (Blackwell Scientific, Oxford, 1985).
Gallup, C. D., Edwards, R. L. & Johnson, R. G. Science 263, 796–800 (1994).
Stirling, C. H., Esat, T. M., McCulloch, M. T. & Lambeck, K. Earth Planet. Sci. Lett. 135, 115–130 (1995).
Henderson, G. M., Cohen, A. S. & O'Nions, R. K. Earth Planet. Sci. Lett. 115, 65–73 (1993).
Bard, E., Fairbanks, R. G., Hamelin, B., Zindler, A. & Hoang, C. T. Geochim. Cosmochim. Acta 55, 2385–2390 (1991).
Richards, D. A., Smart, P. L. & Edwards, R. L. Nature 367, 357–360 (1994).
Bard, E., Hamelin, B. & Fairbanks, R. G. Nature 346, 456–458 (1990).
Kaufman, A. Quat. Res. 25, 55–62 (1986).
Imbrie, J. I., Mix, A. C. & Martinson, D. G. Nature 363, 531–533 (1993).
Crowley, T. J. Paleoceanography 9, 1–5 (1994).
Crowley, T. J. & Kim, K.-Y. Science 265, 1566–1568 (1994).
Sowers, T. et al. Paleoceanography 8, 737–766 (1993).
Edwards, R. L., Chen, J. H. & Wasserburg, G. J. Earth Planet. Sci. Lett. 81, 175–192 (1986/1987).
James, W. D. & Acevedo, L. E. J. Radiol. Nucl. Chem. Articles 171, 287–302 (1993).
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Slowey, N., Henderson, G. & Curry, W. Direct U–Th dating of marine sediments from the two most recent interglacial periods. Nature 383, 242–244 (1996). https://doi.org/10.1038/383242a0
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DOI: https://doi.org/10.1038/383242a0
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