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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. 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.
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 * 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 * 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 * Device: Giant box corer (GKG)
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 2) Sedimentology and stable isotope of core PS2166-2. https://doi.org/10.1594/PANGAEA.407723
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. 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
  17. 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
  18. 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
  19. 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
  20. 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