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Time-Transgressive Deglacial Retreat of Polar Waters from the North Atlantic

Published online by Cambridge University Press:  20 January 2017

W.F. Ruddiman  and
A. McIntyre
W.F. Ruddiman
Affiliation:
U.S. Naval Oceanographic Office, Chesapeake Beach, Maryland, CLIMAP Associate USA
A. McIntyre
Affiliation:
CLIMAP, Lamont-Doherty Geological Observatory of Columbia University USA, Dept., Earth and Environmental Science,, Queens College of C.U.N.Y. USA
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Abstract

A 9300 yr-old zone of disseminated volcanic ash in North Atlantic sediments between 45° N and 65° N provides a time-synchronous reference layer against which we have compared the stratigraphic level of deglacial warming of ocean surface waters. In the Atlantic north of 45° N the most prominent feature of this warming is the replacement of low-carbonate glacial marine sediment containing only a single species of polar Foraminifera by calcareous oozes containing a diverse temperate fauna and flora. The local terminations of glacial conditions marked by this change are not synchronous at these latitudes, but range from 13,500 yr B.P. or older in the southeast near Great Britain to 6,500 yr B.P. or younger in the northwest near Greenland. Regionally, these local warmings trace the progressive westward and northward retreat of polar water from the North Atlantic. Since the withdrawal of polar water from the North Atlantic coincides with the northward shrinkage of temperate-latitude continental ice sheets, it is the best oceanic analog to continental deglaciation.

Faunal, floral, lithologic, and isotopic parameters showing evidence for a sudden deglacial warming may not be time-synchronous; those parameters are subject to a range of environmental controls and may thus respond differently to the causal mechanism for global warming.

Type
Original Articles
Information
Quaternary Research , Volume 3 , Issue 1 , June 1973 , pp. 117 - 130
Copyright
University of Washington

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References

Berger, W.H., (1968). Planktonic Foraminifera: selective solution and paleoclimatic interpretation. Deep-Sea Research 15, 31–43.Google Scholar
Bloom, A.L., (1971). Glacial-eustatic and isostatic controls of sea level since the last Glaciation. Turekian, K.K., The Late Cenozoic Glacial Ages Yale University Press 355–380.Google Scholar
Bramlette, M.N., Bradley, W.H., (1941). Geology and biology of North Atlantic deep-sea cores between Newfoundland and Ireland, Part 1. Lithology and geologic interpretations. U.S. Geological Survey Professional Paper 196-A, 1–34.Google Scholar
Broecker, W.S., (1971). Calcite accumulation rates and glacial to interglacial changes in oceanic mixing. Turekian, K.K., The Late Cenozoic Glacial Ages Yale University Press 239–265.Google Scholar
Broecker, W.S., van Donk, J., (1970). Insolation changes, ice volumes, and the 18O record in deep-sea cores. Reviews of Geophysics and Space Physics 8, 169–198.CrossRefGoogle Scholar
Broecker, W.S., Turekian, K.K., Heezen, B.C., (1958). The relation of deep-sea sedimentation rates to variations in climate. American Journal of Science 256, 503–517.CrossRefGoogle Scholar
Broecker, W.S., Ewing, M., Heezen, B.C., (1960). Evidence for an abrupt change in climate close to 11,000 years ago. American Journal of Science 258, 429–440.Google Scholar
Conolly, J.R., Ewing, M., (1965). Pleistocene glacial marine zones in North Atlantic deep-sea sediments. Nature (London) 208, 135–139.Google Scholar
Cushman, J.A., Henbest, L.G., (1941). Geology and biology of North Atlantic deep-sea cores between Newfoundland and Ireland. Part 2. Foraminifera. U.S. Geological Survey Professional Paper 196-A, 35–54.Google Scholar
Dansgaard, W., Tauber, H., (1969). Glacial oxygen-18 content and Pleistocene ocean temperatures. Science 166, 499–502.Google Scholar
Duncan, J.R., Fowler, G.A., Kulm, L.D., (1970). Planktonic Foraminiferan-Radiolarian ratios and Holocene-Late Pleistocene deep-sea stratigraphy off Oregon. Geological Society of American Bulletin 81, 561–566.CrossRefGoogle Scholar
Emiliani, C., (1955). Pleistocene temperatures. Journal of Geology 63, 538–578.Google Scholar
Ericson, D.B., (1959). Coiling direction of Globigerina pachyderma as a climatic index. Science 130, 219–220.CrossRefGoogle ScholarPubMed
Ericson, D.B., Ewing, M., Wollin, G., (1964). Sediment cores from the Arctic and Subarctic seas. Science 144, 1183–1192.CrossRefGoogle ScholarPubMed
Ewing, M., Donn, W.L., (1956). A theory of the ice ages. Science 123, 1061–1066.Google Scholar
Flint, R.F., (1971). Glacial and Quaternary Geology. John Wiley and Sons N.Y.,.Google Scholar
Hammen, T.Van der, Wijmstra, T.A., Zagwijn, W.H., (1971). The floral record of the Late Cenozoic of Europe. Turekian, K.K., The Late Cenozoic Glacial Ages Yale University Press 391–424.Google Scholar
Holtedahl, H., (1959). Geology and paleontology of Norwegian Sea bottom cores. Journal of Sedimentary Petrology 29, 16–29.Google Scholar
Ku, T.L., Broecker, W.S., (1966). Atlantic deep-sea stratigraphy: extension of absolute chronology to 320,000 years. Science 151, 448–450.Google Scholar
McDonald, B.C., (1971). Late Quaternary stratigraphy and deglaciation in Eastern Canada. Turekian, K.K., The Late Cenozoic Glacial Ages Yale University Press 331–354.Google Scholar
McIntyre, A., Ruddiman, W.F., Jantzen, R., (1972). Southward penetrations of the North Atlantic Polar Front: faunal and floral evidence of large-scale surface water mass movements over the last 225,000 years. Deep-Sea Research 19, 61–77.Google Scholar
Olausson, E., (1960). Description of sediment core from the North Atlantic. Reports Swedish Deep-sea Expedition (1947–1948) 7, 229–386.Google Scholar
Olausson, E., (1965). Evidence of climatic changes in North Atlantic deep-sea cores with remarks on isotopic paleotemperature analysis. Progress in Oceanography 3, 221–252.Google Scholar
Prest, V.K., (1969). Retreat of Wisconsin and Recent ice in North America. Geological Survey Conn. 1257a, Canada Map.Google Scholar
Rona, E., Emiliani, C., (1969). Absolute dating of Caribbean cores P6304-8 and P6304-9. Science 163, 66–68.CrossRefGoogle ScholarPubMed
Rosholt, J.N., Emiliani, C., Geiss, J., Koczy, F.F., Wangersky, P.J., (1961). Absolute dating of deep-sea cores by the Pa231/Th230 method. Journal of Geology 69, 162–185.Google Scholar
Ruddiman, W.F., (1971). Pleistocene sedimentation in the equatorial Atlantic: stratigraphy and faunal paleoclimatology. Geological Society of America Bulletin 82, 283–302.Google Scholar
Ruddiman, W.F., Glover, L.K., (1972a). Ice-rafted volcanic ash: a tracer of North Atlantic paleocirculation. American Geophysical Union Annual Meetings 423Abstracts.Google Scholar
Ruddiman, W.F., Glover, L.K., (1972b). Vertical mixing of ice-rafted volcanic ash in North Atlantic sediments. Geological Society of America Bulletin 83, 2817–2836.Google Scholar
Shackleton, N., (1967). Oxygen isotope analyses and Pleistocene temperatures reassessed. Nature (London) 215, 15–17.Google Scholar
Terasmae, J., (1972). The Pleistocene-Holocene boundary in the Canadian context. Reports of the International Geological Congress, 24th Session 12, 120–125(Montreal).Google Scholar
Warren, B., (1967). Oceanic circulation. Fairbridge, R.W., The Encyclopedia of Oceanography Reinhold Publishing Corporation 590–597.Google Scholar
Wright, H.E., (1971). Late Quaternary vegetational history of North America. Turkeian, K.K., The Late Cenozoic Glacial Ages Yale University Press 425–464.Google Scholar