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Lucchi, Renata G; Rebesco, Michele; Camerlenghi, Angelo; Busetti, M; Tomadin, Luciano; Villa, Giuliana; Persico, Davide; Morigi, Caterina; Bonci, M C; Giorgetti, G (2007): Magnetic susceptibility and documentation of sediment cores from the Antarctic Peninsula Pacific margin. PANGAEA, https://doi.org/10.1594/PANGAEA.671563, Supplement to: Lucchi, RG et al. (2002): Mid-late Pleistocene glacimarine sedimentary processes of a high-latitude, deep-sea sediment drift (Antarctic Peninsula Pacific margin). Marine Geology, 189(3-4), 343-370, https://doi.org/10.1016/S0025-3227(02)00470-X

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Abstract:
The effects of glaciation on sediment drifts is recognised from marked sedimentary facies variation in deep sea cores taken from the continental rise of the Antarctic Peninsula Pacific margin. Nineteen sediment cores were visually described, logged for magnetic susceptibility, and X-radiographed. About 1000 analyses were performed for grain size, clay minerals and biostratigraphy (foraminifera, nannofossils and diatoms). Four sediment types associated with distinct sedimentary processes are recognised based on textural/compositional analysis. (1) Hemipelagic mud forms the bulk of the interglacial sediment, and accumulated from the pelagic settling of bioclasts and ice-rafted/windtransported detritus. (2) Terrigenous mud forms the bulk of the glacial sediment, and accumulated from a combination of sedimentary processes including turbidity currents, turbid plumes, and bottom current reworking of nepheloid layers. (3) Silty deposits occurring as laminated layers and lenses, represent the lateral spillout of lowdensity turbidity currents. (4) Lastly, glacial/interglacial gravelly mud layers derive from settling of ice-rafted detritus. Five depositional settings are interpreted within sediment Drift 7, each characterised by the dominance/interaction of one or several depositional processes. The repetitive succession of typical sedimentary facies is inferred to reflect a sequence of four climatic stages (glaciation, glacial, deglaciation, and interglacial), each one characterised by a distinctive clay mineral assemblage and bioclastic content. Variations in clay mineral assemblage within interglacial stage 5 (core SED-06) suggest minor colder climatic fluctuations, possibly correlatable with substages 5a to 5e.
Coverage:
Median Latitude: -66.393696 * Median Longitude: -76.907098 * South-bound Latitude: -67.286000 * West-bound Longitude: -79.962500 * North-bound Latitude: -64.106833 * East-bound Longitude: -69.335167
Date/Time Start: 1997-03-02T19:09:00 * Date/Time End: 1997-03-15T02:41:00
Event(s):
SED-11 * Latitude: -67.143500 * Longitude: -76.368167 * Date/Time: 1997-03-02T19:09:00 * Elevation: -3725.0 m * Recovery: 4.99 m * Campaign: SEDANO-II * Basis: Explorer * Device: Gravity corer (GC)
SED-12 * Latitude: -67.208000 * Longitude: -76.490833 * Date/Time: 1997-03-03T01:58:00 * Elevation: -3620.0 m * Recovery: 6.97 m * Campaign: SEDANO-II * Basis: Explorer * Device: Gravity corer (GC)
SED-13 * Latitude: -67.286000 * Longitude: -76.646667 * Date/Time: 1997-03-03T06:01:00 * Elevation: -3559.0 m * Recovery: 6.69 m * Campaign: SEDANO-II * Basis: Explorer * Device: Gravity corer (GC)
Size:
17 datasets

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Datasets listed in this Collection

  1. Lucchi, RG; Rebesco, M; Camerlenghi, A et al. (2007): Magnetic susceptibility of sediment core SED-11 from the Antarctic Peninsula Pacific margin. https://doi.org/10.1594/PANGAEA.671556
  2. Lucchi, RG; Rebesco, M; Camerlenghi, A et al. (2007): Magnetic susceptibility of sediment core SED-14 from the Antarctic Peninsula Pacific margin. https://doi.org/10.1594/PANGAEA.671557
  3. Lucchi, RG; Rebesco, M; Camerlenghi, A et al. (2007): Magnetic susceptibility of sediment core SED-15 from the Antarctic Peninsula Pacific margin. https://doi.org/10.1594/PANGAEA.671558
  4. Lucchi, RG; Rebesco, M; Camerlenghi, A et al. (2007): Magnetic susceptibility of sediment core SED-16 from the Antarctic Peninsula Pacific margin. https://doi.org/10.1594/PANGAEA.671559
  5. Lucchi, RG; Rebesco, M; Camerlenghi, A et al. (2007): Magnetic susceptibility of sediment core SED-17 from the Antarctic Peninsula Pacific margin. https://doi.org/10.1594/PANGAEA.671560
  6. Lucchi, RG; Rebesco, M; Camerlenghi, A et al. (2007): Magnetic susceptibility of sediment core SED-18 from the Antarctic Peninsula Pacific margin. https://doi.org/10.1594/PANGAEA.671561
  7. Lucchi, RG; Rebesco, M; Camerlenghi, A et al. (2007): Magnetic susceptibility of sediment core SED-19 from the Antarctic Peninsula Pacific margin. https://doi.org/10.1594/PANGAEA.671562
  8. Lucchi, RG (2002): Documentation of sediment core SED-11. https://doi.org/10.1594/PANGAEA.74386
  9. Lucchi, RG (2002): Documentation of sediment core SED-12. https://doi.org/10.1594/PANGAEA.74387
  10. Lucchi, RG (2002): Documentation of sediment core SED-13. https://doi.org/10.1594/PANGAEA.74388
  11. Lucchi, RG (2002): Documentation of sediment core SED-14. https://doi.org/10.1594/PANGAEA.74389
  12. Lucchi, RG (2002): Documentation of sediment core SED-15. https://doi.org/10.1594/PANGAEA.74390
  13. Lucchi, RG (2002): Documentation of sediment core SED-16. https://doi.org/10.1594/PANGAEA.74391
  14. Lucchi, RG (2002): Documentation of sediment core SED-17. https://doi.org/10.1594/PANGAEA.74392
  15. Lucchi, RG (2002): Documentation of sediment core SED-18. https://doi.org/10.1594/PANGAEA.74393
  16. Lucchi, RG (2002): Documentation of sediment core SED-19. https://doi.org/10.1594/PANGAEA.74394
  17. Lucchi, RG (2002): Documentation of sediment core SED-20. https://doi.org/10.1594/PANGAEA.74395