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Ellwood, Michael J; Hunter, Keith A (2000): Zn/Sr record of the Last Interglacial Transition in South Atlantic Ocean sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.848245, Supplement to: Ellwood, MJ; Hunter, KA (2000): Variations in the Zn/Si record over the Last Interglacial Glacial Transition. Paleoceanography, 15(5), 506-514, https://doi.org/10.1029/1999PA000470

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Published: 2000 (exact date unknown) • DOI registered: 2015-08-14

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Abstract:
We examined the zinc content of diatom frustules as an indicator of past changes in surface seawater Zn2+ concentration. Zn/Si data of samples from three cores located in the South Atlantic sector of the Southern Ocean spanning the last interglacial-glacial transition are presented. Changes in the Zn/Si record are linked to changes in the surface water Zn2+ concentration. The source of variation in Zn2+ concentration appears to be via changes in deep water upwelling and circulation. We rule out changes in phytoplankton productivity and aeolian dust input as a source of variation in the Zn/Si record. Likewise, the Zn/Si data are not linked to shifts in the diatom species composition of the sediment or sediment preservation effects. The Zn/Si results presented do not support the zinc hypothesis. There is no link between the uptake of CO2 by phytoplankton, as inferred from the d13C record, and the Zn/Si record.
Coverage:
Median Latitude: -50.057500 * Median Longitude: 2.278600 * South-bound Latitude: -54.790000 * West-bound Longitude: -4.930000 * North-bound Latitude: -45.090000 * East-bound Longitude: 9.150000
Date/Time Start: 1970-12-14T00:00:00 * Date/Time End: 1971-01-01T00:00:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets

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Datasets listed in this publication series

  1. Ellwood, MJ; Hunter, KA (2000): (Table 3) Geochemistry of sediment cores from the Souther Ocean. https://doi.org/10.1594/PANGAEA.848243
  2. Ellwood, MJ; Hunter, KA (2000): (Table 2) Zn/Si ratios of surface sediments. https://doi.org/10.1594/PANGAEA.848219