Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Pudsey, Carol J (2000): Sedimentology of cores from the continental rise west of the Antarctic Peninsula. PANGAEA, https://doi.org/10.1594/PANGAEA.671626, Supplement to: Pudsey, CJ (2000): Sedimentation on the continental rise west of the Antarctic Peninsula over the last three glacial cycles. Marine Geology, 167(3-4), 313-338, https://doi.org/10.1016/S0025-3227(00)00039-6

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
The continental rise west of the Antarctic Peninsula includes a number of large sediment mounds interpreted as contourite drifts. Cores from six sediment drifts spanning some 650 km of the margin and 48 of latitude have been dated using chemical and isotopic tracers of palaeoproductivity and diatom biostratigraphy. Interglacial sedimentation rates range from 1.1 to 4.3 cm/ka. Glacial sedimentation rates range from 1.8 to 13.5 cm/ka, and decrease from proximal to distal sites on each drift. Late Quaternary sedimentation was cyclic, with brown, biogenic, burrowed mud containing ice-rafted debris (IRD) in interglacials and grey, barren, laminated mud in glacials. Foraminiferal intervals occur in interglacial stages 5 and 7 but not in the Holocene. Processes of terrigenous sediment supply during glacial stages differed; meltwater plumes were more important in stages 2–4, turbidity currents and ice-rafting in stage 6. The terrigenous component shows compositional changes along the margin, more marked in glacials. The major oxides Al2O3 and K2O are higher in the southwest, and CaO and TiO2 higher in the northeast. There is more smectite among the clay minerals in the northeast. Magnetic susceptibility varies along and between drifts. These changes reflect source variations along the margin. Interglacial sediments show less clear trends, and their IRD was derived from a wider area. Downslope processes were dominant in glacials, but alongslope processes may have attained equal importance in interglacials. The area contrasts with the East Antarctic continental slope in the SE Weddell Sea, where ice-rafting is the dominant process and where interglacial sedimentation rates are much higher than glacial. The differences in glacial setting and margin physiography can account for these contrasts.
Coverage:
Median Latitude: -65.056000 * Median Longitude: -71.450470 * South-bound Latitude: -66.806700 * West-bound Longitude: -76.976000 * North-bound Latitude: -63.095000 * East-bound Longitude: -65.513300
Event(s):
PC101 * Latitude: -63.095000 * Longitude: -65.513300 * Elevation: -2930.0 m * Recovery: 6.6 m * Method/Device: Piston corer (PC) * Comment: BAS core repository
PC102 * Latitude: -64.587100 * Longitude: -69.413500 * Elevation: -2787.0 m * Recovery: 9.4 m * Method/Device: Piston corer (PC) * Comment: BAS core repository
PC103 * Latitude: -66.806700 * Longitude: -75.946700 * Elevation: -2941.0 m * Recovery: 9.4 m * Method/Device: Piston corer (PC) * Comment: BAS core repository
Size:
20 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Pudsey, CJ (2007): Diatom distribution and carbonate content of sediment core PC102 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671615
  2. Pudsey, CJ (2007): Diatom distribution and carbonate content of sediment core PC103 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671616
  3. Pudsey, CJ (2007): Diatom distribution and carbonate content of sediment core PC107 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671619
  4. Pudsey, CJ (2007): Diatom distribution and carbonate content of sediment core PC108 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671620
  5. Pudsey, CJ (2007): Diatom distribution and carbonate content of sediment core PC109 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671621
  6. Pudsey, CJ (2007): Diatom distribution and carbonate content of sediment core PC110 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671622
  7. Pudsey, CJ (2007): Diatom distribution and carbonate content of sediment core PC113 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671624
  8. Pudsey, CJ (2007): Diatom distribution, biogenic barium and carbonate content of sediment core PC101 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671614
  9. Pudsey, CJ (2007): Diatom distribution, biogenic barium and carbonate content of sediment core PC106 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671618
  10. Pudsey, CJ (2007): Diatom distribution, biogenic barium and carbonate content of sediment core PC111 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671623
  11. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC101 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671603
  12. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC102 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671604
  13. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC103 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671605
  14. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC106 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671606
  15. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC107 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671607
  16. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC108 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671608
  17. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC109 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671609
  18. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC110 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671611
  19. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC111 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671612
  20. Pudsey, CJ (2007): Magnetic susceptibility of sediment core PC113 from the continental rise west of the Antarctic Peninsula. https://doi.org/10.1594/PANGAEA.671613