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Two-Step Deglaciation: 14C-Dated High-Resolution δ18O Records from the Tropical Atlantic Ocean

Published online by Cambridge University Press:  20 January 2017

W. H. Berger ,
J. S. Killingley ,
C. V. Metzler  and
E. Vincent
W. H. Berger
Affiliation:
Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093 USA
J. S. Killingley
Affiliation:
Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093 USA
C. V. Metzler
Affiliation:
Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093 USA
E. Vincent
Affiliation:
Scripps Institution of Oceanography, University of California, San Diego, La Jolla, California 92093 USA
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Abstract

Eight box cores from the tropical Atlantic were studied in detail with regard to foraminiferal oxygen isotopes, radiocarbon, and Globorotalia menardii abundance. A standard Atlantic oxygen-isotope signal was reconstructed for the last 20,000 yr. It is quite similar to the west-equatorial Pacific signal published previously. Deglaciation is seen to occur in two steps which are separated by a pause. Onset of deglaciation is after 15,000 yr B.P. The pause is centered between 11,000 and 12,000 yr B.P., but may be correlative with the Younger Dryas (10,500 yr B.P.) if allowance is made for a scale shift due to mixing processes on the sea floor. Step 2 is centered near 10,000 yr B.P. and is followed by a brief excursion toward light oxygen values. This excursion (the M event) may correlate with the Gulf of Mexico meltwater spike.

Type
Original Articles
Information
Quaternary Research , Volume 23 , Issue 2 , March 1985 , pp. 258 - 271
Copyright
University of Washington

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References

Beget, J.E. 1983 Radiocarbon-dated evidence of worldwide early Holocene climate change Geology 11 389–393 Google Scholar
Berger, W.H. 1978a Sedimentation of deep-sea carbonate: Maps and models of variations and fluctuations Journal of Foraminiferal Research 8 286–302 Google Scholar
Berger, W.H. 1978b Oxygen-18 stratigraphy in deep-sea sediments: Additional evidence for the deglacial meltwater effect Deep-Sea Research 25 473–480 CrossRefGoogle Scholar
Berger, W.H. 1982a On the definition of the Pleistocene-Holocene boundary in deep-sea sediments Sveriges Geologiska Undersoekning, Serie C: Avhandlinger och Uppsater 766 270–280 Google Scholar
Berger, W.H. 1982b Deglacial CO2 buildup: Constraints on the coral-reef model Palaeogeography, Palaeoclimatology, Palaeoecology 40 235–253 CrossRefGoogle Scholar
Berger, W.H. Gardner, J.V. 1975 On the determination of Pleistocene temperatures from planktonic foraminifera journal of Foraminiferal Research 5 102–113 Google Scholar
Berger, W.H. Johnson, R.F. 1978 On the thickness and the 14C age of the mixed layer in deep-sea carbonates Earth and Planetary Science Letters 41 223–227 CrossRefGoogle Scholar
Berger, W.H. Johnson, R.F. Killingley, J.S. 1977 “Unmixing” of the deep-sea record and the deglacial meltwater spike Nature (London) 269 661–663 Google Scholar
Berger, W.H. Killingley, J.S. 1977 Glacial-Holocene transition in deep-sea carbonates: Selective dissolution and the stable isotope signal Science (Washington, D.C.) 197 563–566 Google Scholar
Berger, W.H. Killingley, J.S. 1982a Box cores from the equatorial Pacific: 14C sedimentation rate and benthic mixing Marine Geology 45 93–125 Google Scholar
Berger, W.H. Killingley, J.S. 1982b The Worthington effect and the origin of the Younger Dryas Journal of Marine Research 490 27–38 (Suppl.)Google Scholar
Berger, W.H. Killingley, J.S. Vincent, E. 1978 Stable isotopes in deep-sea carbonates: Box Core ERDC-92, west equatorial Pacific Oceanologica Acta 1 203–216 Google Scholar
Berner, W. Oeschger, H. Stauffer, B. 1980 Information on the CO2 cycle from ice core studies Radiocarbon 22 227–235 Google Scholar
Broecker, W.S. 1981 Glacial to interglacial changes in ocean and atmosphere chemistry Berger, A. Climatic Variations and Variability: Facts and Theories Reidel Amsterdam 111–112 CrossRefGoogle Scholar
Broecker, W.S. 1982a Glacial to interglacial changes in ocean chemistry Progress in Oceanography 11 151–197 Google Scholar
Broecker, W.S. 1982b Ocean chemistry during glacial time Geochemica et Cosmochimica Acta 46 1689–1705 Google Scholar
Broecker, W.S. Ewing, M. Heezen, B.C. 1960 Evidence of an abrupt change in climate close to 11,000 years ago American Journal of Science 258 429–448 CrossRefGoogle Scholar
Broecker, W.S. Van Donk, J. 1970 Isolation changes, ice volumes, and the O18 record in deep-sea cores Reviews of Geophysics and Space Physics 8 169–198 Google Scholar
Caralp, M. 1970 Essai de stratigraphie du Pleistocène marin terminal d'après les paléoclimats observés dans des carottes du golfe de Gascogne Bulletin de la Société Géologique de France 712 403–412 CrossRefGoogle Scholar
CLIMAP Project Members, 1976 The surface of the ice-age Earth Science (Washington, D.C.) 191 1131–1137 Google Scholar
Damuth, J.E. 1977 Late Quaternary sedimentation in the western equatorial Atlantic Geological Society of America Bulletin 88 695–710 Google Scholar
Delmas, R.J. Ascencio, J.M. Legrand, M. 1980 Polar ice evidence that atmospheric CO2 20,000 yr BP was 50% of present Nature (London) 284 155–157 CrossRefGoogle Scholar
Duplessy, J.C. Delibrias, G. Turon, J.L. Pujol, C. Duprat, J. 1981 Deglacial warming of the northeastern Atlantic Ocean: Correlation with the paleoclimatic evolution of the European continent Palaeogeography, Palaeoclimatology, Palaeoecology 35 121–144 Google Scholar
Emiliani, C. 1955 Pleistocene temperatures Journal of Geology 63 538–578 Google Scholar
Emiliani, C. 1978 The cause of the ice ages Earth and Planetary Science Letters 37 349–352 CrossRefGoogle Scholar
Emiliani, C. Gartner, S. Lidz, B. Eldridge, K. Elvey, D.K. Huang, T.C. Stipp, J.J. Swanson, M.F. 1975 Paleoclimatological analysis of late Quaternary cores from the northeastern Gulf of Mexico Seience (Washington, D.C.) 189 1083–1088 Google Scholar
Ericson, D.B. Broecker, W.S. Kulp, J.L. Wollin, G. 1956 Late-Pleistocene climates and deep-sea sediments Science (Washington, D.C.) 124 385–389 Google Scholar
Ericson, D.B. Wollin, G. 1956 Micropaleon-tological and isotopic determinations of Pleistocene climates Micropaleontology 2 257–270 Google Scholar
Flint, R.F. 1971 Glacial and Quaternary Geology Wiley New York Google Scholar
Hessler, R.R. Jumars, P.A. 1974 Abyssal community analysis from replicate box cores in the central North Pacific Deep-Sea Research 21 185–209 Google Scholar
Imbrie, J. Kipp, N.G. 1971 A new micropaleontological method for quantitative paleoclimatology: Application to a late Pleistocene Caribbean core Turekian, K.K. The Lage Cenozoic Glacial Ages Yale Univ. Press New Haven, Conn 71–181 Google Scholar
Imbrie, J. Van Donk, J. Kipp, N.G. 1973 Paleoclimatic investigation of a late Pleistocene Carib-bean deep-sea core: Comparison of isotopic and faunal methods Quaternary Research 3 10–38 Google Scholar
Jones, G.A. Ruddiman, W.F. 1982 Assessing the global meltwater spike Quaternary Research 17 148–172 CrossRefGoogle Scholar
Keir, R.S. Berger, W.J. 1983 Atmospheric CO2 content in the last 120,000 years: The phosphate-extraction model Journal of Geophysical Research 88 6027–6038 CrossRefGoogle Scholar
Kennett, J.P. Shackleton, N.J. 1975 Laurentide ice sheet meltwater recorded in Gulf of Mexico deep-sea cores Science (Washington, D.C.) 188 147–150 Google Scholar
Kerr, R.A. 1983 An early glacial two step? Science (Washington, D.C.) 221 143–144 CrossRefGoogle ScholarPubMed
Leventer, A. Williams, D.F. Kennett, J.P. 1982 Dynamics of the Laurentide ice sheet during the last deglaciation: Evidence from the Gulf of Mexico Earth and Planetary Science Letters 59 11–17 Google Scholar
Leventer, A. Williams, D.F. Kennett, J.P. 1983 Relationships between anoxia, glacial meltwater and microfossil preservation in the Orca Basin, Gulf of Mexico Marine Geology 53 23–40 Google Scholar
McIntyre, A. Kipp, N.G. Bé, A.W.H. Crowley, T. Kellogg, T. Gardner, J.V. Prell, W. Ruddiman, W.F. 1976 Glacial North Atlantic 18,000 years ago: A CLIMAP reconstruction Geological Society of America Memoir 145 43–76 Google Scholar
Neftel, A. Oeschger, H. Schwander, J. Stauffer, B. Zumbrunn, R. 1982 Ice core sample measurements give atmospheric CO2 content during the past 40,000 years Nature (London) 295 220–223 Google Scholar
Olausson, E. 1965 Evidence of climatic change in North Atlantic deep-sea cores, with remarks on isotopic paleotemperature analysis Progress in Oceanography 3 221–252 CrossRefGoogle Scholar
Olausson, E. 1969 On the Würm-Flandrian boundary in deep-sea cores Geologie en Mijnbouw 48 349–361 Google Scholar
Pastouret, L. Chamley, H. Delibrias, G. Duplessy, J.C. Thiede, J. 1978 Late Quaternary climatic changes in western tropical Africa deduced from deep-sea sedimentation off the Niger delta Oceanologica Acta 1 217–232 Google Scholar
Peng, T.H. Broecker, W.S. Kipphut, G. Shackleton, N. 1977 Benthic mixing in deep sea cores as determined by 14C dating and its implications regarding climate stratigraphy and the fate of fossil fuel CO2 Andersen, N.R. Malahoff, A. The Fate of Fossil Fuel CO2 in the Oceans Plenum New York 355–373 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. McIntyre, A. 1973 Time-transgressive deglacial retreat of polar waters from the North Atlantic Quaternary Research 3 117–130 Google Scholar
Ruddiman, W.F. McIntyre, A. 1981a The North Atlantic Ocean during the last deglaciation Palaeogeography, Palaeoclimatology, Palaeoecology 35 145–214 Google Scholar
Ruddiman, W.F. McIntyre, A. 1981b The mode and mechanism of the last deglaciation: Oceanic evidence Quaternary Research 16 125–134 Google Scholar
Sarnthein, M. Thiede, J. Pflaumann, U. Erlenkeuser, H. Fütterer, D. Koopmann, B. Lange, H. Seibold, E. 1982 Atmospheric and oceanic circulation patterns off northwest Africa during the past 25 million years Rad, U.Von Geology of the Northwest African Continental Margin Springer Berlin 545–604 Google Scholar
Schott, W. 1935 Die Foraminiferen in dem äquatorialen Teil des Atlantischen Ozeans Wissensch. Ergebn. d. deutschen atl. Eped. auf dem Forschungschiff Meteor 3 3B 43–134 1925–1927Google Scholar
Somayajulu, B.L.K. Sharma, P. Berger, W.H. 1984 10Be, 14C and UTh decay series nuclides and δ18O in a box core from the central North Atlantic Marine Geology 54 169–180 Google Scholar
Turekian, K.K. 1965 Some aspects of the geochemistry of marine sediments Riley, J.P. Skirrow, G. Chemical Oceanography Academic Press New York/London 81–126 Google Scholar
Wiseman, J.D.H. 1965 The changing rate of calcium carbonate sedimentation on the equatorial Atlantic floor and its relation to continental late Quaternary stratigraphy Reports of the Swedish Deep-Sea Expedition 7 288–354 Google Scholar