Multiple episodes of aridity in southern Africa since the last interglacial period
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Rapid sea-level fall and deep-ocean temperature change since the last interglacial period
We have dated Huon Peninsula, Papua New Guinea and Barbados corals that formed at times since the Last Interglacial Period, applying both 230Th and 231Pa dating techniques as a test of age accuracy. We show that Marine Isotope Stage (MIS) 5e ended prior to 113.18 0.7 kyr, when sea level was 319 m. During MIS 5b sea level was 357 m at 92.68 0.5 kyr, having dropped about 40 m in approximately 10 ...
متن کاملMultiple Deglaciations of the Hudson Bay Lowlands, Canada, Since Deposition of the Missinaibi (Last-Interglacial?) Formation
s with Programs 14. Andrews, J. T., and Falconer, G. (1969). Late glacialand post-glacial history and emergence of the Ot-tawa Islands, Hudson Bay, N.W.T.: Evidence onthe deglaciation of Hudson Bay. Canadian Journa/of Earth Sciences 6, 12631276. Andrews, J. T., and Mahaffy, M. A. (1976). Growthrates of the Laurentide Ice Sheet and sea level low-ering (with emphasis on th...
متن کاملThe deep ocean during the last interglacial period.
Oxygen isotope analysis of benthic foraminifera in deep sea cores from the Atlantic and Southern Oceans shows that during the last interglacial period, North Atlantic Deep Water (NADW) was 0.4 degrees +/- 0.2 degrees C warmer than today, whereas Antarctic Bottom Water temperatures were unchanged. Model simulations show that this distribution of deep water temperatures can be explained as a resp...
متن کاملRapid reductions in North Atlantic Deep Water during the peak of the last interglacial period.
Deep ocean circulation has been considered relatively stable during interglacial periods, yet little is known about its behavior on submillennial time scales. Using a subcentennially resolved epibenthic foraminiferal δ(13)C record, we show that the influence of North Atlantic Deep Water (NADW) was strong at the onset of the last interglacial period and was then interrupted by several prominent ...
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ژورنال
عنوان ژورنال: Nature
سال: 1997
ISSN: 0028-0836,1476-4687
DOI: 10.1038/40596