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Nicholl, Joseph A L; Hodell, David A; Naafs, Bernhard David A; Hillaire-Marcel, Claude; Channell, James E T; Romero, Oscar E (2012): Sediment properties of IODP Holes 303-U1302A and 303-U1305C. PANGAEA, https://doi.org/10.1594/PANGAEA.796238, Supplement to: Nicholl, JAL et al. (2012): A Laurentide outburst flooding event during the last interglacial period. Nature Geoscience, 5, 901-904, https://doi.org/10.1038/ngeo1622

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Abstract:
Episodes of ice-sheet disintegration and meltwater release over glacial-interglacial cycles are recorded by discrete layers of detrital sediment in the Labrador Sea. The most prominent layers reflect the release of iceberg armadas associated with cold Heinrich events, but the detrital sediment carried by glacial outburst floods from the melting Laurentide Ice Sheet is also preserved. Here we report an extensive layer of red detrital material in the Labrador Sea that was deposited during the early last interglacial period. We trace the layer through sediment cores collected along the Labrador and Greenland margins of the Labrador Sea. Biomarker data, Ca/Sr ratios and d18O measurements link the carbonate contained in the red layer to the Palaeozoic bedrock of the Hudson Bay. We conclude that the debris was carried to the Labrador Sea during a glacial outburst flood through the Hudson Strait, analogous to the final Lake Agassiz outburst flood about 8,400 years ago, probably around the time of a last interglacial cold event in the North Atlantic. We suggest that outburst floods associated with the final collapse of the Laurentide Ice Sheet may have been pervasive features during the early stages of Late Quaternary interglacial periods.
Coverage:
Median Latitude: 52.380348 * Median Longitude: -46.557989 * South-bound Latitude: 50.002774 * West-bound Longitude: -48.529717 * North-bound Latitude: 57.475150 * East-bound Longitude: -45.637850
Comment:
Measurements of calcium and strontium content from core scanning XRF, oxygen isotope measurements of bulk sediment carbonate and G. bulloides, point counts of IRD content, weight % carbonate, and weight % of >63 micron size fraction from IODP site U1302. Measurements of calcium and strontium content from core scanning XRF, oxygen isotope measurements of bulk sediment carbonate, weight % carbonate, and weight % of >63 micron size fraction from IODP site U1305. Measurements of biomarker concentration and composition from Site U1302 and U1305.
Size:
11 datasets

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Datasets listed in this publication series

  1. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Biomarker concentration and composition of IODP Holes 303-U1302A and 303-U1305C. https://doi.org/10.1594/PANGAEA.796237
  2. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Bulk carbonate stable oxygen isotope ratios of IODP Hole 303-U1302A. https://doi.org/10.1594/PANGAEA.796226
  3. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Bulk carbonate stable oxygen isotope ratios of IODP Hole 303-U1305C. https://doi.org/10.1594/PANGAEA.796228
  4. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Calcium and strontium content of IODP Hole 303-U1302A. https://doi.org/10.1594/PANGAEA.796234
  5. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Calcium and strontium content of IODP Hole 303-U1305C. https://doi.org/10.1594/PANGAEA.796236
  6. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Carbonate content of IODP Hole 303-U1302A. https://doi.org/10.1594/PANGAEA.796230
  7. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Carbonate content of IODP Hole 303-U1305C. https://doi.org/10.1594/PANGAEA.796231
  8. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Ice rafted debris and detrial carbonate content of IODP Hole 303-U1302A. https://doi.org/10.1594/PANGAEA.796232
  9. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Sand size fraction of IODP Hole 303-U1302A. https://doi.org/10.1594/PANGAEA.796235
  10. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Sand size fraction of IODP Hole 303-U1302A. https://doi.org/10.1594/PANGAEA.796233
  11. Nicholl, JAL; Hodell, DA; Naafs, BDA et al. (2012): Stable oxygen isotope ratios of Globigerina bulloides from IODP Hole 303-U1302A. https://doi.org/10.1594/PANGAEA.796229