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Stein, Ruediger; Schubert, Carsten J; Vogt, Christoph; Fütterer, Dieter K (1994): Stable oxygen and carbon isotope ratios of Neogloboquadrina pachyderma from Latest Pleistocene to Holocene sediments of the eastern central Arctic Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.728634, Supplement to: Stein, R et al. (1994): Stable isotope stratigraphy, sedimentation rates, and salinity changes in the latest Pleistocene and Holocene eastern central Arctic Ocean. Marine Geology, 119(3-4), 333-355, https://doi.org/10.1016/0025-3227(94)90189-9

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Abstract:
A high-resolution study including oxygen and carbon stable isotopes as well as carbonate and total organic carbon contents, has been performed on undisturbed near-surface (0-40 cm) sediment sequences taken in the eastern Arctic Ocean during the international Arctic 91 Expedition. Based on the oxygen stable isotope records measured on Neogloboquadrina pachyderma (sin.) and AMS 14C dating, the upper 10 to 20 cm of the sediment sequences represent isotope stage 1, and the base of Termination I (15.7 ka) can be identified very well. Stage 1 sedimentation rates vary between 0.4 and >2.0 cm/kyr. In general, glacial stage 2 sedimentation rates are probably lower and vary between 0.4 and 0.7 cm/kyr.
The glacial-interglacial shifts in delta18O values of N. pachyderma sin. may reach values of 1.3 to 2.5 per mil indicating (1) that, in addition to the glacial-interglacial global ice-volume signal, changes in surface-water salinity have effected the isotope records and (2) that these salinity changes have varied laterally. Glacial-interglacial differences in salinity were small in the Lomonosov Ridge area (0-0.4 per mil) and relatively high in the Morris-Jesup-Rise area (up to 1.4 per mil). This implies that the supply of low-saline waters onto the Eurasian shelves and its further transport into the central Arctic Ocean via the Transpolar Drift should have continued during the last glacial and should have significantly influenced the surface water characteristics in parts of the central Arctic. On the Morris-Jesup-Rise, on the other hand, the glacial low-saline-water signal at that time was strongly reduced in comparison to the modern situation.
At the glacial-interglacial stage 1/2 boundary, a strong meltwater signal is recorded in a sharp depletion in delta18O as well as delta13C. This central Arctic Ocean meltwater event can be correlated from the Makarov Basin through the Lomonosov Ridge and Amundsen Basin to the eastern Gakkel Ridge. The beginning of this event is AMS 14C dated at 15.7 ka, i.e., significantly older than the major decrease in the global ice-volume signal which occurs between 9 and 13.5 ka. Large amounts of freshwater/meltwater were probably supplied from the Eurasian continent due to the decay of the Barents-Sea-Ice-Sheet, causing this distinct early meltwater anomaly in the central Arctic Ocean.
The extension of a well-oxygenated surface-near water mass in the Arctic Ocean and (at least seasonal) open-ice conditions and some increased bioproductivity were probably established at the end of Termination I, as indicated by the increase in delta13C to modern values as well as increased carbonate (i.e., foraminifers, coccoliths, ostracodes) and total organic carbon contents.
Funding:
Fourth Framework Programme (FP4), grant/award no. MAS3980185: Quaternary Environment of the Eurasian North
Coverage:
Median Latitude: 86.062043 * Median Longitude: 42.115407 * South-bound Latitude: 82.023700 * West-bound Longitude: -14.368700 * North-bound Latitude: 90.000000 * East-bound Longitude: 159.167500
Date/Time Start: 1991-08-09T00:00:00 * Date/Time End: 1991-09-29T00:00:00
Event(s):
PS2159-3 (PS19/152) * Latitude: 83.960300 * Longitude: 30.369700 * Date/Time: 1991-08-09T00:00:00 * Elevation: -4055.0 m * Penetration: 0.34 m * Recovery: 0.34 m * Location: Nansen Basin * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: MultiCorer (MUC)
PS2161-1 (PS19/154) * Latitude: 85.449500 * Longitude: 44.421500 * Date/Time: 1991-08-11T00:00:00 * Elevation: -4005.0 m * Penetration: 0.49 m * Recovery: 0.49 m * Location: Nansen Basin * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
PS2163-1 (PS19/157) * Latitude: 86.241800 * Longitude: 59.215000 * Date/Time: 1991-08-13T00:00:00 * Elevation: -3040.0 m * Penetration: 0.3 m * Recovery: 0.3 m * Location: Gakkel Ridge, Arctic Ocean * Campaign: ARK-VIII/3 (PS19 ARCTIC91) * Basis: Polarstern * Method/Device: MultiCorer (MUC)
Size:
28 datasets

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Datasets listed in this publication series

  1. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 2) Age determinations on sediment core PS2163-1. https://doi.org/10.1594/PANGAEA.91165
  2. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 2) Age determinations on sediment core PS2170-4. https://doi.org/10.1594/PANGAEA.91166
  3. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 2) Age determinations on sediment core PS2202-2. https://doi.org/10.1594/PANGAEA.91161
  4. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 2) Age determinations on sediment core PS2206-4. https://doi.org/10.1594/PANGAEA.91167
  5. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2159-3. https://doi.org/10.1594/PANGAEA.728606
  6. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2161-1. https://doi.org/10.1594/PANGAEA.728607
  7. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2163-1. https://doi.org/10.1594/PANGAEA.728608
  8. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2165-5. https://doi.org/10.1594/PANGAEA.728609
  9. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2170-4. https://doi.org/10.1594/PANGAEA.728610
  10. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2175-4. https://doi.org/10.1594/PANGAEA.728611
  11. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2177-3. https://doi.org/10.1594/PANGAEA.728612
  12. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2178-4. https://doi.org/10.1594/PANGAEA.728613
  13. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2179-3. https://doi.org/10.1594/PANGAEA.728614
  14. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2184-3. https://doi.org/10.1594/PANGAEA.728615
  15. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2185-4. https://doi.org/10.1594/PANGAEA.728616
  16. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2190-5. https://doi.org/10.1594/PANGAEA.728617
  17. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2192-3. https://doi.org/10.1594/PANGAEA.728618
  18. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2193-2. https://doi.org/10.1594/PANGAEA.728619
  19. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2196-2. https://doi.org/10.1594/PANGAEA.728620
  20. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2198-4. https://doi.org/10.1594/PANGAEA.728621
  21. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2200-4. https://doi.org/10.1594/PANGAEA.728622
  22. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2204-2. https://doi.org/10.1594/PANGAEA.728623
  23. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2204-3. https://doi.org/10.1594/PANGAEA.728624
  24. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2205-1. https://doi.org/10.1594/PANGAEA.728625
  25. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2206-4. https://doi.org/10.1594/PANGAEA.728626
  26. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2208-1. https://doi.org/10.1594/PANGAEA.728627
  27. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2210-3. https://doi.org/10.1594/PANGAEA.728628
  28. Stein, R; Schubert, CJ; Vogt, C et al. (1994): (Table 3) Stable carbon and oxygen isotope ratios of Neogloboquadrina pachyderma of sediment core PS2212-6. https://doi.org/10.1594/PANGAEA.728629