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McNeill, Donald F; Guyomard, Thierry S; Hawthorne, Teresa B (1993): Paleomagnetic of ODP Leg 133 holes [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.786842, Supplement to: McNeill, DF et al. (1993): Magnetostratigraphy and the nature of magnetic remanence in platform/periplatform carbonates, Queensland Plateau, Australia. In: McKenzie, JA; Davies, PJ; Palmer-Julson, A; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 133, 573-614, https://doi.org/10.2973/odp.proc.sr.133.263.1993

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Abstract:
Paleomagnetic and rock-magnetic analyses from discrete samples of carbonate sites on the Queensland Plateau were used to determine magnetic polarity reversal stratigraphy and the nature of magnetization in these sediments. Magnetic polarity zones were correlated with the geomagnetic polarity time scale in the upper portions of cores at Sites 812 through 814, usually back to a late Pliocene age. Loss of reliable directional data was coincidental with a major decrease in magnetic intensity, below which, no stable polarity zones could be identified. The intensity reduction is either an in-situ alteration of magnetic grains, or an input signal representing progressive increase in the magnetic component of Queensland Plateau sediments. Although not conclusive at this point, the geochemical conditions and differing age of intensity reduction support the former hypothesis. Rock-magnetic analysis of carbonate sediments suggests that ultrafine-grained magnetite or maghemite crystals is an important carrier of remanence and may be biogenic in origin. Application of a recently calibrated anhysteretic remanent magnetization test to assess configuration of single-domain crystal within a natural matrix indicates that cementation (ooze-chalk-limestone) may be important in post-depositional changes affecting magnetostatic grain interaction.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -17.838338 * Median Longitude: 149.597965 * South-bound Latitude: -18.158000 * West-bound Longitude: 147.762300 * North-bound Latitude: -16.445000 * East-bound Longitude: 150.042200
Date/Time Start: 1990-08-20T00:00:00 * Date/Time End: 1990-10-03T06:10:00
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
11 datasets

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Datasets listed in this publication series

  1. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Appendix A) NRM intensity, maximum AF demagnetization step, and median destructive field of ODP Site 133-812. https://doi.org/10.1594/PANGAEA.786775
  2. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Appendix B) Magnetic polarity, inclination angle, and maximum angular deviation of ODP Hole 133-812. https://doi.org/10.1594/PANGAEA.786765
  3. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Table 4) Summary of iron geochemical analyses from ODP Hole 133-812A. https://doi.org/10.1594/PANGAEA.786759
  4. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Appendix A) NRM intensity, maximum AF demagnetization step, and median destructive field of ODP Hole 133-813A. https://doi.org/10.1594/PANGAEA.786762
  5. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Appendix B) Magnetic polarity, inclination angle, and maximum angular deviation of ODP Hole 133-813A. https://doi.org/10.1594/PANGAEA.786766
  6. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Appendix A) NRM intensity, maximum AF demagnetization step, and median destructive field of ODP Hole 133-814A. https://doi.org/10.1594/PANGAEA.786763
  7. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Appendix B) Magnetic polarity, inclination angle, and maximum angular deviation of ODP Hole 133-814A. https://doi.org/10.1594/PANGAEA.786793
  8. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Appendix A) NRM intensity, maximum AF demagnetization step, and median destructive field of ODP Hole 133-818B. https://doi.org/10.1594/PANGAEA.786764
  9. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Appendix B) Magnetic polarity, inclination angle, and maximum angular deviation of ODP Hole 133-818B. https://doi.org/10.1594/PANGAEA.786768
  10. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Table 3) ARM acquisition values and lithology for ODP Leg 133 holes. https://doi.org/10.1594/PANGAEA.786751
  11. McNeill, DF; Guyomard, TS; Hawthorne, TB (1993): (Table 2) Rock-magnetic characteristics of carbonate samples from ODP Leg 133 holes. https://doi.org/10.1594/PANGAEA.786750