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Nørgaard-Pedersen, Niels; Spielhagen, Robert F; Thiede, Jörn; Kassens, Heidemarie (1998): Sedimentology and stable carbon and oxygen isotope record of the Central Arctic [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.733504, Supplement to: Nørgaard-Pedersen, N et al. (1998): Central Arctic surface ocean environment during the past 80,000 years. Paleoceanography, 13(2), 193-204, https://doi.org/10.1029/97PA03409

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Abstract:
Stable oxygen and carbon isotope and sedimentological-paleontological investigations supported by accelerator mass spectrometry 14C datings were carried out on cores from north of 85°N in the eastern central Arctic Ocean. Significant changes in accumulation rates, provenance of ice-rafted debris (IRD), and planktic productivity over the past 80,000 years are documented. During peak glacials, i.e., oxygen isotope stages 4 and 2, the Arctic Ocean was covered by sea ice with decreased seasonal variation, limiting planktic productivity and bulk sedimentation rates. In early stage 3 and during Termination I, major deglaciations of the circum-Arctic regions caused lowered salinities and poor oxygenation of central Arctic surface waters. A meltwater spike and an associated IRD peak dated to ~14-12 14C ka can be traced over the southern Eurasian Basin of the Arctic Ocean. This event was associated with the early and rapid deglaciation of the marine-based Barents Sea Ice Sheet. A separate Termination Ib meltwater event is most conspicuous in the central Arctic and is associated with characteristic dolomitic carbonate IRD. This lithology suggests an origin of glacial ice from northern Canada and northern Greenland where lower Paleozoic platform carbonates crop extensively out.
Project(s):
Helmholtz Centre for Ocean Research Kiel (GEOMAR)
Quaternary Environment of the Eurasian North (QUEEN)
Funding:
Fourth Framework Programme (FP4), grant/award no. MAS3980185: Quaternary Environment of the Eurasian North
Coverage:
Median Latitude: 86.801240 * Median Longitude: 66.877060 * South-bound Latitude: 85.327700 * West-bound Longitude: -14.022000 * North-bound Latitude: 88.036000 * East-bound Longitude: 144.166200
Date/Time Start: 1991-08-15T00:00:00 * Date/Time End: 1991-09-16T00:00:00
Event(s):
PS2166-2 (PS19/160) * Latitude: 86.860200 * Longitude: 59.698800 * Date/Time: 1991-08-15T00:00:00 * Elevation: -3618.0 m * Penetration: 0.37 m * Recovery: 0.37 m * Location: Gakkel Ridge, Arctic Ocean * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
PS2177-1 (PS19/175) * Latitude: 88.036000 * Longitude: 134.925500 * Date/Time: 1991-08-27T00:00:00 * Elevation: -1388.0 m * Penetration: 0.4 m * Recovery: 0.44 m * Location: Lomonosov Ridge, Arctic Ocean * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
PS2185-3 (PS19/186) * Latitude: 87.529300 * Longitude: 144.166200 * Date/Time: 1991-09-02T00:00:00 * Elevation: -1073.0 m * Penetration: 0.33 m * Recovery: 0.37 m * Location: Lomonosov Ridge, Arctic Ocean * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
20 datasets

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Datasets listed in this publication series

  1. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 5) Accumulation rate of ice rafted debris and foraminifera from sediment core PS2166-2. https://doi.org/10.1594/PANGAEA.398997
  2. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Table 2) Age determinations on sediment core PS2166-2. https://doi.org/10.1594/PANGAEA.358842
  3. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 4) Mass and accumulation rate of sediment core PS2166-2. https://doi.org/10.1594/PANGAEA.407717
  4. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 2) Sedimentology and stable isotope of core PS2166-2. https://doi.org/10.1594/PANGAEA.407723
  5. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 5) Accumulation rate of ice rafted debris and foraminifera from sediment core PS2177-1. https://doi.org/10.1594/PANGAEA.398998
  6. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Table 2) Age determinations on sediment core PS2177-1. https://doi.org/10.1594/PANGAEA.358843
  7. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 4) Mass accumulation rate of sediment core PS2177-1. https://doi.org/10.1594/PANGAEA.407718
  8. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 2) Sedimentology and stable isotope of core PS2177-1. https://doi.org/10.1594/PANGAEA.407726
  9. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 5) Accumulation rate of ice rafted debris and foraminifera from sediment core PS2185-3. https://doi.org/10.1594/PANGAEA.398999
  10. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Table 2) Age determinations on sediment core PS2185-3. https://doi.org/10.1594/PANGAEA.358844
  11. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 4) Mass accumulation rate of sediment core PS2185-3. https://doi.org/10.1594/PANGAEA.407719
  12. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 2) Sedimentology and stable isotope of core PS2185-3. https://doi.org/10.1594/PANGAEA.407727
  13. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 5) Accumulation rate of ice rafted debris and foraminifera from sediment core PS2195-4. https://doi.org/10.1594/PANGAEA.399000
  14. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Table 2) Age determinations on sediment core PS2195-4. https://doi.org/10.1594/PANGAEA.358845
  15. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 4) Mass accumulation rate of sediment core PS2195-4. https://doi.org/10.1594/PANGAEA.407720
  16. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 2) Sedimentology and stable isotope of core PS2195-4. https://doi.org/10.1594/PANGAEA.407728
  17. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 5) Accumulation rate of ice rafted debris and foraminifera from sediment core PS2200-2. https://doi.org/10.1594/PANGAEA.399001
  18. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Table 2) Age determinations on sediment core PS2200-2. https://doi.org/10.1594/PANGAEA.358846
  19. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 4) Mass accumulation rate of sediment core PS2200-2. https://doi.org/10.1594/PANGAEA.407721
  20. Nørgaard-Pedersen, N; Spielhagen, RF; Thiede, J et al. (1998): (Figure 2) Sedimentology and stable isotope of core PS2200-2. https://doi.org/10.1594/PANGAEA.407729