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Parés, Josep M; Hassold, Noralynn J C; Rea, David K; van der Pluijm, Ben A (2007): Magnetic measurements on ODP holes 178-1095A, 178-1095B and 178-1101A [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.695831, Supplement to: Parés, JM et al. (2007): Paleocurrent directions from paleomagnetic reorientations of magnetic fabrics in deep-sea sediments at the Antarctic Peninsula Pacific margin (ODP Sites 1095, 1101). Marine Geology, 242(4), 261-269, https://doi.org/10.1016/j.margeo.2007.04.002

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Abstract:
We have determined the azimuth of bottom-current flow in drift deposit sediments recovered at ODP Sites 1095 and 1101, Antarctic Peninsula, using paleomagnetic reorientation of anisotropy of magnetic susceptibility (AMS) ellipsoids. A total of 38 cores from the two ODP sites have been measured, providing spatial and directional information on the physical record of the ACC (Antarctic Circumpolar Current) in the Plio-Pleistocene. Declination and inclination of the paleomagnetic vector of each core segment were used to reorient the AMS principal axes to the geographic coordinates. The cores were reoriented using the measured direction of the characteristic remanent magnetization (ChRM) with respect to a common reference line for the core, from which we are able to determine the orientation of the paleocurrent flow for Sites 1095 (Drift 7) and 1101 (Drift 4) relative to the geographic coordinates. Both sites have paleocurrent directions trending ~NW–SE, which in the former locality are parallel to a sediment wave field. Our study shows that a combination of magnetic fabric analysis and paleomagnetism allows deep-sea sedimentary fabric to be used as a long-term proxy of bottom-current flow history.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -66.114367 * Median Longitude: -75.745437 * South-bound Latitude: -66.985450 * West-bound Longitude: -78.487820 * North-bound Latitude: -64.372200 * East-bound Longitude: -70.261180
Date/Time Start: 1998-02-17T16:15:00 * Date/Time End: 1998-03-18T10:30:00
Event(s):
178-1095A * Latitude: -66.985450 * Longitude: -78.487310 * Date/Time Start: 1998-02-17T16:15:00 * Date/Time End: 1998-02-18T19:30:00 * Elevation: -3841.6 m * Penetration: 87.3 m * Recovery: 86.48 m * Location: South Pacific Ocean * Campaign: Leg178 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 10 cores; 87.3 m cored; 0 m drilled; 99.1 % recovery
178-1095B * Latitude: -66.985450 * Longitude: -78.487820 * Date/Time: 1998-02-18T00:00:00 * Elevation: -3841.6 m * Penetration: 570.2 m * Recovery: 385.75 m * Location: South Pacific Ocean * Campaign: Leg178 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 52 cores; 487.2 m cored; 83 m drilled; 79.2 % recovery
178-1101A * Latitude: -64.372200 * Longitude: -70.261180 * Date/Time: 1998-03-18T10:30:00 * Elevation: -3279.7 m * Penetration: 217.7 m * Recovery: 215.75 m * Location: South Pacific Ocean * Campaign: Leg178 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 24 cores; 217.7 m cored; 0 m drilled; 99.1 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
12 datasets

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Datasets listed in this publication series

  1. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Table 1, Appendix A Table III) Summary of the anisotropy of magnetic susceptibility for Hole 178-1095A. https://doi.org/10.1594/PANGAEA.695757
  2. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table IV) Summary of paleomagnetic data for core rotation for Hole 178-1095A. https://doi.org/10.1594/PANGAEA.695761
  3. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table II) Mean directions of the principal axes of magnetic susceptibility for Hole 178-1095A. https://doi.org/10.1594/PANGAEA.695753
  4. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table I) Summary of susceptibility data for Hole 178-1095A. https://doi.org/10.1594/PANGAEA.695748
  5. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Table 1, Appendix A Table III) Summary of the anisotropy of magnetic susceptibility for Hole 178-1095B. https://doi.org/10.1594/PANGAEA.695758
  6. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table IV) Summary of paleomagnetic data for core rotation for Hole 178-1095B. https://doi.org/10.1594/PANGAEA.695762
  7. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table II) Mean directions of the principal axes of magnetic susceptibility for Hole 178-1095B. https://doi.org/10.1594/PANGAEA.695755
  8. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table I) Summary of susceptibility data for Hole 178-1095B. https://doi.org/10.1594/PANGAEA.695751
  9. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Table 1, Appendix A Table III) Summary of the anisotropy of magnetic susceptibility for Hole 178-1101A. https://doi.org/10.1594/PANGAEA.695759
  10. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table IV) Summary of paleomagnetic data for core rotation for Hole 178-1101A. https://doi.org/10.1594/PANGAEA.695763
  11. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table II) Mean directions of the principal axes of magnetic susceptibility for Hole 178-1101A. https://doi.org/10.1594/PANGAEA.695756
  12. Parés, JM; Hassold, NJC; Rea, DK et al. (2007): (Appendix A Table I) Summary of susceptibility data for Hole 178-1101A. https://doi.org/10.1594/PANGAEA.695752