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Late Pleistocene Paleoclimatology of the Central Equatorial Pacific: A Quantitative Record of Eolian and Carbonate Deposition

Published online by Cambridge University Press:  20 January 2017

John M. Chuey
Affiliation:
Department of Atmospheric and Oceanic Science, University of Michigan, Ann Arbor, Michigan 48109
David K. Rea*
Affiliation:
Department of Atmospheric and Oceanic Science, University of Michigan, Ann Arbor, Michigan 48109
Nicklas G. Pisias
Affiliation:
College of Oceanography, Oregon State University, Corvallis, Oregon 97331
*
1To whom correspondence should be addressed at Department of Geological Sciences, University of Michigan, Ann Arbor, MI 48109.

Abstract

Detailed records of δ18O, δ13C, percentage and mass accumulation rate of CaCO3, and eolian percentage, mass accumulation rate, and grainsize generated for core RC11-210 from the equatorial Pacific reveal the timing of paleoclimatic events over the past 950,000 yr. The CaCO3 percentage record shows the standard Pacific correlation of high CaCO3 content with glacial periods, but displays a marked change of character about 490,000 yr ago with older stages showing much less variability. The carbonate mass flux record, however, does not show such a noticeable change. Sedimentation rates vary from about 0.5 to 3.0 cm/1000 yr and, during the past 490,000 yr, sections with enhanced sedimentation rates correspond to periods of high CaCO3 percentage. Eolian mass accumulation rates, an indication of the aridity of the source region, are usually higher during glacial times. Eolian grainsize, an indication of the intensity of atmospheric circulation, generally fluctuates at a higher frequency than the 100,000-yr glacial cycle. The mid-Brunhes climatic event centered at 300,000 yr ago appears as a 50,000-yr interval of low intensity and reduced variability of atmospheric circulation. Furthermore, the nature of this entire record changes then, with the younger portion indicating less variation in wind intensity than the older part of the record. The late Matuyama increase in amplitude of paleoclimatic signals begins 875,000 yr ago in the eolian record, 25,000 yr before the δ18O and CaCO3 percentage amplitude increases about 850,000 yr ago.

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Articles
Copyright
University of Washington

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References

Adelseck, C.G. Jr. Anderson, T.F. The late Pleistocene record of productivity fluctuations in the late eastern equatorial Pacific Ocean. Geology 6 1978 388 391 2.0.CO;2>CrossRefGoogle Scholar
Arrhenius, G. Sediment cores from the east Pacific: Properties of the sediments. Reports of the Swedish Deep-Sea Expedition 1947–1948 I 1952 1 228 Google Scholar
Arthur, M.A. Dean, W.E. Schlanger, S.O. Variations in the global carbon cycle during the Cretaceous related to climate, volcanism, and changes in atmospheric CO2 Sundquist, E.T. Broecker, W.S. The Carbon Cycle and Atmospheric CO2: Natural Variations Archean to Present. American Geophysical Union Monograph 32 1985 504 529 Washington, DC Google Scholar
Berger, W.G. Vincent, E. Thierstein, H.G. The deep-sea record: Major steps in Cenozoic ocean evolution Warme, J.E. Douglas, R.G. Winterer, E.L. The Deep Sea Drilling Project, A Decade of Progress. Society of Economomic Paleontologists and Mineralogists Special Publication 32 1981 489 504 Tulsa, OK Google Scholar
Broecker, W.S. Peng, T.H. Tracers in the Sea 1982 Lamont-Doherty Geological Observatory Palisades, New York Google Scholar
Clayton, R. Rex, R. Syers, J. Jackson, M. Oxygen isotope abundance in quartz from Pacific pelagic sediments. Journal of Geophysical Research 77 1972 3907 3915 Google Scholar
CLIMAP The surface of the ice-age Earth. Science 191 1976 1131 1137 CrossRefGoogle Scholar
CLIMAP Seasonal Reconstructions of the Earth's Surface at the Last Glacial Maxima 1981 Geological Society of America Map and Chart Series, MC-36. Boulder, CO Google Scholar
Duce, R. Unni, C. Ray, B. Prospero, J. Merrill, J. Long range atmospheric transport of soil dust from Asia to the tropical North Pacific: Temporal variability. Science 209 1980 1522 1524 Google Scholar
Emiliani, C. Pleistocene temperatures. Journal of Geology 63 1955 538 578 Google Scholar
Folk, R.L. Petrology of Sedimentary Rocks 1974 Hemphill Austin, TX Google Scholar
Hays, J.D. Saito, T. Opdyke, N.D. Burckle, L.H. Pliocene-Pleistocene sediments of the equatorial Pacific: Their paleomagnetic, biostratigraphic, and climatic record. Geological Society of America Bulletin 80 1969 1481 1514 Google Scholar
Hooghiemstra, H. Vegetational and Climatic History of the High Plain of Bogota, Columbia: A Continuous Record of the Last 3.5 Million Years 1984 Cramer Vaduz, Liechenstein Google Scholar
Imbrie, J. Hays, J.D. Martinson, D.G. McIntyre, A. Mix, A.C. Morley, J.J. Pisias, N.G. Prell, W.L. Shackleton, N.J. The orbital theory of Pleistocene climate: Support from a revised chronology of the marine δ18O record Berger, A. Imbrie, J. Hays, J. Kukla, G. Saltzman, B. Milankovitch and Climate 1984 Reidel Dordrecht 269 305 Part 1 Google Scholar
Janecek, T.R. Rea, D.K. Quaternary fluctuations in northern hemisphere trade winds and westerlies. Quaternary Research 24 1985 150 163 CrossRefGoogle Scholar
Jansen, J.H. Kuijpers, A. Troelstra, S.R. A mid-Brunhes climatic event: Long-tern changes in global atmosphere and ocean circulation. Science 232 1986 619 622 CrossRefGoogle Scholar
Leinen, M. Heath, G.R. Sedimentary indicators of atmospheric circulation in the northern hemisphere during the Cenozoic. Palaeogeography, Palaeoclimatology, Palaeoecology 36 1981 1 21 Google Scholar
Martinson, D. Menke, W. Stoffa, P. An inverse approach to signal correlation. Journal of Geophysical Research 87 1982 4807 4818 Google Scholar
Murray, D. Spatial and Temporal Variations in Sediment Accumulation in the Central Tropical Pacific. Unpublished Ph.D. dissertation 1987 Oregon State University Corvallis Google Scholar
Parkin, D.W. Padgham, R.C. Further studies on trade winds during the glacial cycles. Proceedings of the Royal Society of London, Series A 346 1975 245 260 Google Scholar
Parkin, D.W. Shackleton, N.J. Trade wind and temperature correlations down a deep-sea core off the Saharan Coast. Nature (London) 245 1973 455 457 Google Scholar
Pisias, N.G. Late Quaternary sediment of the Panama Basin: Sedimentation rates, periodicities, and controls of carbonate and opal accumulation Cline, R.M. Hays, J.D. Investigation of Late Quaternary Paleoceanography and Paleoclimatology. Geological Society of America Memoir 145 1976 375 391 Boulder, CO Google Scholar
Pisias, N.G. Barron, J.A. Nigrini, C. Dunn, D.A. Stratigraphic resolution of Leg 85 drill sites: An initial analysis Mayer, L. Theyer, F. et al. Initial Reports of the Deep Sea Drilling Project Vol. 85 1985 U.S. Government Printing Office Washington, DC 695 708 Google Scholar
Pisias, N.G. Leinen, M. Milankovitch forcing of the oceanic system: Evidence from the northwest Pacific Berger, A. Imbrie, J. Hays, J. Kukla, G. Saltzman, B. Milankovitch and Climate 1984 Riedel Dordrecht 307 330 Part 1 Google Scholar
Pisias, N.G. Martinson, D. Moore, T.C. Jr. Shackleton, N.J. Prell, W.L. Hays, J. Boden, G. High resolution stratigraphic correlation of benthic oxygen isotope records spanning the last 300,000 years. Marine Geology 56 1984 119 136 CrossRefGoogle Scholar
Pisias, N.G. Moore, T.C. Jr. The evolution of Pleistocene climate: A time series approach. Earth and Planetary Science Letters 52 1981 450 458 CrossRefGoogle Scholar
Pisias, N.G. Rea, D.K. Late Pleistocene paleoclimatology of the central Equatorial Pacific: Sea-surface response to the southeast tradewinds. Paleoceanography 1987 in press Google Scholar
Prell, W.L. Oxygen and carbon isotope stratigraphy for the Quaternary of Hole 502B: Evidence for two modes of isotope variability Prell, W.L. Gardner, J.V. et al. Initial Reports of the Deep Sea Drilling Project Vol. 68 1982 U.S. Government Printing Office Washington, DC 455 464 Google Scholar
Prospero, J.M. Glaccum, R.A. Nees, R.T. Atmospheric transport of soil dust from Africa to South America. Nature (London) 289 1981 570 572 Google Scholar
Prospero, J.M. Nees, R.T. Dust concentrations in the atmosphere of the equatorial North Atlantic: Possible relationships to the Sahalian droughts. Science 196 1977 1196 1198 Google Scholar
Rea, D.K. Chambers, L.W. Chuey, J.M. Janecek, T.R. Leinen, M. Pisias, N.G. A 420,000-year record of cyclicity in oceanic and atmospheric processes from the eastern Equatorial Pacific. Paleoceanography 1 1986 577 586 CrossRefGoogle Scholar
Rea, D.K. Janecek, T.R. Mass accumulation rates of non-authigenic inorganic crystalline (eolian) component of deep sea sediments from the western Mid-Pacific Mountains, Deep Sea Drilling Project Site 463 Thiede, J. Vallier, T.L. et al. Initial Reports of the Deep Sea Drilling Project Vol. 62 1981 U.S. Government Printing Office Washington, DC 653 659 Google Scholar
Rea, D.K. Leinen, M. Janecek, T.R. A geologic approach to the long-term history of atmospheric circulation. Science 227 1985 721 725 Google Scholar
Ruddiman, W.F. Raymo, M. McIntyre, A. Matuyama 41,000-year cycles: North Atlantic Ocean and northern hemisphere ice sheets. Earth and Planetary Science Letters 80 1986 117 129 Google Scholar
Sancetta, C. Silvestri, S. Diatom stratigraphy of the late Pleistocene (Brunhes) subarctic Pacific. Marine Micropaleontology 9 1984 263 274 Google Scholar
Schramm, C.T. Implications of radiolarian assemblages for the late Quaternary paleoceanography of the eastern Equatorial Pacific. Quaternary Research 24 1985 204 218 Google Scholar
Shackleton, N.J. Oxygen isotope analyses and Pleistocene temperatures re-assessed. Nature (London) 218 1967 15 17 Google Scholar
Shackleton, N.J. The oxygen isotope stratigraphic record of the late Pleistocene. Philosophical Transactions of the Royal Society of London, Series B 280 1977 169 182 Google Scholar
Shackleton, N.J. Tropical rainforest history and the equatorial Pacific carbonate dissolution cycles Andersen, N.R. Malahoff, A. The Fate of Fossil Fuel CO2 in the Oceans 1977 Plenum New York 401 428 Google Scholar
Shackleton, N.J. Opdyke, N.D. Oxygen isotope and paleomagnetic stratigraphy of V28-239, late Pliocene to latest Pleistoce Cline, R.M. Hays, J.D. Investigation of Late Quaternary Paleoceanography and Paleoclimatology. Geological Society of America Memoir 145 1976 449 464 Boulder, CO Google Scholar
Shackleton, N.J. Pisias, N.G. Atmospheric carbon dioxide, orbital forcing, and climate Sundquist, E.T. Broecker, W.S. The Carbon Cycle and Atmospheric CO2: Natural Variations Archean to Present. American Geophysical Union Monograph 32 1985 303 317 Washington, DC Google Scholar
Thompson, P.R. Saito, T. Pacific Pleistocene sediments: Planktonic foraminifera dissolution cycles and geochronology. Geology 2 1974 333 335 Google Scholar
van der Hammen, T. The Plio-Pleistocene climatic record of the tropical Andes. Journal of the Geological Society of London 142 1985 483 489 Google Scholar
Windom, H.L. Eolian contributions to marine sediments. Journal of Sedimentary Petrology 45 1975 520 529 Google Scholar