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Rickaby, Rosalind E M; Elderfield, Henry (1999): Planktonic foraminiferal Cd/Ca ratios [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.856843, Supplement to: Rickaby, REM; Elderfield, H (1999): Planktonic foraminiferal Cd/Ca: Paleonutrients or paleotemperature? Paleoceanography, 14(3), 293-303, https://doi.org/10.1029/1999PA900007

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Abstract:
Records of Cd/Ca in planktonic foraminiferal calcite of Globigerinoides bulloides in cores from the Subantarctic region of the Southern Ocean show large glacial-interglacial variations with lower Cd/Ca (by 0.06-0.10 µmol/mol) at glacial times. Interpretation of these records in terms of lower dissolved phosphate and inferred higher glacial nutrient utilization has significant implications for glacial atmospheric carbon dioxide (pCO2) draw-down. However, box core-top data for G. bulloides in the North Atlantic suggest that the incorporation of Cd into planktonic foraminifera relative to seawater (DCd) is temperature sensitive (DCd=0.637 exp 0.15T). When the Subantarctic planktonic Cd/Ca records are corrected for this temperature dependence, they show little or no glacial-interglacial diferences. If, as seems likely, this observation can be interpreted to indicate a minimal change (< 0.5 µmol/kg) in surface water phosphate concentrations, then the explanation for lowered glacial pCO2 must be looked for elsewhere.
Related to:
Rickaby, Rosalind E M; Elderfield, Henry (1999): NOAA/WDS Paleoclimatology - Southern Ocean G. bulloides Cd/Ca, Mg/Ca, and d18O. NOAA National Centers for Environmental Information, https://doi.org/10.25921/F214-JA31
Coverage:
Median Latitude: -33.831587 * Median Longitude: 47.926947 * South-bound Latitude: -53.670000 * West-bound Longitude: -123.100000 * North-bound Latitude: 62.397000 * East-bound Longitude: 96.460667
Date/Time Start: 1967-04-18T00:00:00 * Date/Time End: 1988-02-01T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
8 datasets

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Datasets listed in this publication series

  1. Rickaby, REM; Elderfield, H (1999): Cd/Ca, Mg/Ca ratios, and stable oxygen isotopes of Globigerina bulloides of sediment core ELT48.022-PC. https://doi.org/10.1594/PANGAEA.856835
  2. Rickaby, REM; Elderfield, H (1999): Cd/Ca, Mg/Ca ratios, and stable oxygen isotopes of Globigerina bulloides of sediment core ELT49.018-PC. https://doi.org/10.1594/PANGAEA.856836
  3. Rickaby, REM; Elderfield, H (1999): Cd/Ca, Mg/Ca ratios, and stable oxygen isotopes of Globigerina bulloides of sediment core ELT49.019-PC. https://doi.org/10.1594/PANGAEA.856837
  4. Rickaby, REM; Elderfield, H (1999): Cd/Ca, and stable oxygen isotopes of Globigerina bulloides of sediment core MD88-769. https://doi.org/10.1594/PANGAEA.856838
  5. Rickaby, REM; Elderfield, H (1999): SST reconstruction for sediment core MD88-770. https://doi.org/10.1594/PANGAEA.856839
  6. Rickaby, REM; Elderfield, H (1999): Cd/Ca ratios in Globigerina bulloides test of surface sediments. https://doi.org/10.1594/PANGAEA.856834
  7. Rickaby, REM; Elderfield, H (1999): Cd/Ca, Mg/Ca ratios, and stable oxygen isotopes of Globigerina bulloides of sediment core RC11-120. https://doi.org/10.1594/PANGAEA.856840
  8. Rickaby, REM; Elderfield, H (1999): Cd/Ca, and stable oxygen isotopes of Globigerina bulloides of sediment core RC12-225. https://doi.org/10.1594/PANGAEA.856841