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Gingele, Franz; Kuhn, Gerhard; Maus, Bastian; Melles, Martin; Schöne, Tilo (1997): Sedimentology of cores from the shelf of Lazarev Sea, East Antarctica [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.726640, Supplement to: Gingele, F et al. (1997): Holocene ice retreat from the Lazarev Sea shelf, East Antarctica. Continental Shelf Research, 17(2), 137-163, https://doi.org/10.1016/S0278-4343(96)00026-X

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Abstract:
Distinct facies types, classified in radiocarbon-dated sediments from the shelf of the Lazarev Sea, East Antarctica, reveal a detailed history of processes that have controlled sedimentation during the deglaciation over the last 10,000 yr. The ice retreat on this part of the Antarctic shelf started 9500 yr BP, marked by the deposition of laminated sediments, deposited from a floating ice shelf. These laminites, which occur on top of diamictons laid down from a grounded ice sheet, are the basal sediments of the postglacial sequence. The intensity of the Antarctic Coastal Current (ACC), directed by shelf morphology, controlled sedimentation of the postglacial facies. A residual glaciomarine sediment with the fine fraction winnowed by strong currents developed from 9000-8000 yr BP in the western part of the investigation area and from 9000-5000 yr BP in the eastern part, closer to the prominent 'Fenno Deep' trough. Current velocities apparently decreased between 8000 and 2000 yr BP due to a deflection of the ACC by advancing ice tongues to the east of the investigation area during the 'Hypsithermal'. This led to a deposition of fine-grained sediments, and clay mineralogy suggests a continental source, possibly near the grounding line of the Nivl Ice Shelf, rather than a winnowing of sediments near the shelf break or advection from deeper water. Current velocities intensified after 2000 yr BP, removed fine material from these sediments and led to a relict sediment, consisting of coarse bryozoan and molluscan debris.
Project(s):
Paleoenvironmental Reconstructions from Marine Sediments @ AWI (AWI_Paleo)
Coverage:
Median Latitude: -69.958778 * Median Longitude: 11.998380 * South-bound Latitude: -70.012860 * West-bound Longitude: 11.493500 * North-bound Latitude: -69.799667 * East-bound Longitude: 12.794667
Date/Time Start: 1991-02-21T15:27:00 * Date/Time End: 1992-03-10T20:05:00
Event(s):
PS2028-1 (PS18/175) * Latitude: -70.012860 * Longitude: 11.754280 * Date/Time: 1991-02-21T15:27:00 * Elevation: -208.7 m * Penetration: 0.3 m * Recovery: 0.3 m * Location: Weddell Sea * Campaign: ANT-IX/3 (PS18) * Basis: Polarstern * Method/Device: Giant box corer (GKG) * Comment: 1 section: 0-30
PS2028-2 (PS18/175) * Latitude: -70.011650 * Longitude: 11.748550 * Date/Time: 1991-02-21T15:51:00 * Elevation: -203.0 m * Penetration: 2.5 m * Recovery: 1.81 m * Location: Weddell Sea * Campaign: ANT-IX/3 (PS18) * Basis: Polarstern * Method/Device: Gravity corer (Kiel type) (SL) * Comment: 2 core sections: 0-0.81, 0.81-1.81 m; 2.5m Lot
PS2028-4 (PS18/175) * Latitude: -70.011650 * Longitude: 11.735817 * Date/Time: 1991-02-21T16:49:00 * Elevation: -201.0 m * Penetration: 0.6 m * Recovery: 0.6 m * Location: Weddell Sea * Campaign: ANT-IX/3 (PS18) * Basis: Polarstern * Method/Device: Giant box corer (GKG)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
21 datasets

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Datasets listed in this publication series

  1. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2028-1. https://doi.org/10.1594/PANGAEA.52145
  2. Gingele, F; Kuhn, G; Maus, B et al. (1997): (Table 2) Age model of sediment core PS2028-2. https://doi.org/10.1594/PANGAEA.81500
  3. Gingele, F; Kuhn, G; Maus, B et al. (1997): Clay mineralogy of sediment core PS2028-2. https://doi.org/10.1594/PANGAEA.52146
  4. Gingele, F; Kuhn, G; Maus, B et al. (1997): (Table 2) Age model of sediment core PS2028-4. https://doi.org/10.1594/PANGAEA.81501
  5. Gingele, F; Kuhn, G; Maus, B et al. (1997): Clay mineralogy of sediment core PS2028-4. https://doi.org/10.1594/PANGAEA.52147
  6. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2028-4. https://doi.org/10.1594/PANGAEA.51159
  7. Gingele, F; Kuhn, G; Maus, B et al. (1997): Clay mineralogy of sediment core PS2057-2. https://doi.org/10.1594/PANGAEA.52148
  8. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2057-2. https://doi.org/10.1594/PANGAEA.51160
  9. Gingele, F; Kuhn, G; Maus, B et al. (1997): (Table 2) Age model of sediment core PS2058-1. https://doi.org/10.1594/PANGAEA.81502
  10. Gingele, F; Kuhn, G; Maus, B et al. (1997): Clay mineralogy of sediment core PS2058-1. https://doi.org/10.1594/PANGAEA.52149
  11. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2058-1. https://doi.org/10.1594/PANGAEA.51161
  12. Gingele, F; Kuhn, G; Maus, B et al. (1997): Clay mineralogy of sediment core PS2058-2. https://doi.org/10.1594/PANGAEA.52150
  13. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2058-2. https://doi.org/10.1594/PANGAEA.51162
  14. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2028-2. https://doi.org/10.1594/PANGAEA.51158
  15. Gingele, F; Kuhn, G; Maus, B et al. (1997): (Table 2) Age model of sediment core PS2226-3. https://doi.org/10.1594/PANGAEA.52648
  16. Gingele, F; Kuhn, G; Maus, B et al. (1997): Clay mineralogy of sediment core PS2226-3. https://doi.org/10.1594/PANGAEA.52151
  17. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2226-3. https://doi.org/10.1594/PANGAEA.51163
  18. Gingele, F; Kuhn, G; Maus, B et al. (1997): Clay mineralogy of sediment core PS2227-1. https://doi.org/10.1594/PANGAEA.52152
  19. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2227-1. https://doi.org/10.1594/PANGAEA.51164
  20. Gingele, F; Kuhn, G; Maus, B et al. (1997): Clay mineralogy of sediment core PS2228-2. https://doi.org/10.1594/PANGAEA.52153
  21. Gingele, F; Kuhn, G; Maus, B et al. (1997): Sedimentology of core PS2228-2. https://doi.org/10.1594/PANGAEA.51165