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Broecker, Wallace S; Clark, Elizabeth (2011): Radiocarbon-age differences among coexisting planktic foraminifera shells [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.830790, Supplement to: Broecker, WS; Clark, E (2011): Radiocarbon-age differences among coexisting planktic foraminifera shells: The Barker Effect. Paleoceanography, 26(2), PA2222, https://doi.org/10.1029/2011PA002116

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Abstract:
For slowly accumulating sediments, a major contrast exists in the radiocarbon-age differences among coexisting shells of planktic foraminifera between those experiencing little dissolution and those experiencing significant dissolution. In the former, the ages generally agree to within a couple of hundred years. In the latter, age differences as large as 1000 years are common. The most likely explanation appears to be the Barker Effect, which involves the preferential fragmentation of dissolution-prone G. sacculifer and G. ruber. The whole shells of these species picked for radiocarbon dating have shorter residence times in the bioturbation zone than those for dissolution-resistant species (including benthics). As low accumulation rate sediment cores often fail to yield reliable radiocarbon-based ocean ventilation ages, where possible, such studies should be conducted on high accumulation rate cores.
Coverage:
Median Latitude: 0.542217 * Median Longitude: 175.586583 * South-bound Latitude: -5.517000 * West-bound Longitude: 125.820000 * North-bound Latitude: 6.300000 * East-bound Longitude: -82.070000
Date/Time Start: 1963-04-05T00:00:00 * Date/Time End: 2001-05-13T00:23:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Broecker, WS; Clark, E (2011): (Table 3) Age determination of sediment core MD01-2386. https://doi.org/10.1594/PANGAEA.830787
  2. Broecker, WS; Clark, E (2011): (Table 4) Age determination of sediment cores MD98-2181 and MD97-2138. https://doi.org/10.1594/PANGAEA.830788
  3. Broecker, WS; Clark, E (2011): (Table 2) Age determination of sediment cores TTN13-18 and TTN13-61. https://doi.org/10.1594/PANGAEA.830786
  4. Broecker, WS; Clark, E (2011): (Table 5) Age determination of sediment cores V19-27, V21-40 and V28-238. https://doi.org/10.1594/PANGAEA.830789