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  • PANGAEA  (1)
  • 1975-1979  (1)
  • 1960-1964
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    In:  Supplement to: Keigwin, Lloyd D; Bender, Michael L; Kennett, James P (1979): Thermal structure of the deep Pacific Ocean in the early Pliocene. Science, 205(4413), 1386-1388,
    Publication Date: 2020-02-11
    Description: The thermal structure of the Pacific Ocean between water depths of about 1 and 4.5 kilometers is estimated from the oxygen isotopic ratio of benthonic foraminifera from deep-drilled and piston cores of early Pliocene age (about 3 to 5 million years ago). The ratio of oxygen-18 to oxygen-16 in the early Pliocene at each site varies by an average of only ± 0.12 per mil (1 standard deviation). A plot of the oxygen isotopic ratio against modern bottom-water temperature is adequately fit by a line having a slope of - 0.26 per mil per degree Celsius (the equilibrium temperature dependence of calcite-water fractionation), suggesting that the temperature gradient of the Pacific Ocean during the early Pliocene was similar to that of today.
    Type: Dataset
    Format: text/tab-separated-values, 222 data points
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