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Pälike, Heiko; Shackleton, Nicholas J; Röhl, Ursula (2001): Geochemistry of Eocene sediments from ODP Site 171-1052 on the Black Nose, Atlantic Ocean. PANGAEA, https://doi.org/10.1594/PANGAEA.713705, Supplement to: Pälike, H et al. (2001): Astronomical forcing in late Eocene sediments. Earth and Planetary Science Letters, 193(3-4), 589-602, https://doi.org/10.1016/S0012-821X(01)00501-5

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Abstract:
We use an X-ray fluorescence (XRF) Core Scanner to obtain records of elemental concentrations in sediment cores from Ocean Drilling Program (ODP) Leg 171B, Site 1052 (Blake Nose, Atlantic margin of northern Florida).This record spans the Middle to Late Eocene, as indicated by bio- and magnetostratigraphy, and displays cyclicity that can be attributed to the orbital forcing of a combination of climate, ocean circulation, or productivity. We use the XRF counts of iron and calcium as a proxy of the relative contribution from calcium carbonate and terrestrial material to construct a new composite depth record. This new composite depth record provides the basis to extend the astronomically calibrated geological time scale into the Middle Eocene and results in revised estimates for the age and duration of magnetochrons C16 through C18. In addition, we find an apparent change in the dominance of orbitally driven changes in obliquity and climatic precession at around 36.7 Ma on our new time scale. Long term amplitude modulation patterns of eccentricity and obliquity in the data do not seem to match the current astronomical model any more, suggesting the possibility of new constraints on astronomical calculations.
Project(s):
Coverage:
Median Latitude: 29.951342 * Median Longitude: -76.626765 * South-bound Latitude: 29.951270 * West-bound Longitude: -76.626860 * North-bound Latitude: 29.951500 * East-bound Longitude: -76.626580
Date/Time Start: 1997-01-30T00:00:00 * Date/Time End: 1997-02-06T04:30:00
Event(s):
171-1052 * Latitude: 29.951333 * Longitude: -76.626778 * Date/Time: 1997-01-30T00:00:00 * Elevation: -1343.8 m * Penetration: 1145.3 m * Recovery: 771.6 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Device: Composite Core (COMPCORE) * Comment: 111 cores; 1005.1 m cored; 140 m drilled; 76.8% recovery
171-1052A * Latitude: 29.951500 * Longitude: -76.626580 * Date/Time: 1997-01-30T15:00:00 * Elevation: -1344.5 m * Penetration: 174.5 m * Recovery: 159.63 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 21 core; 174.5 m cored; 0 m drilled; 91.5 % recovery
171-1052B * Latitude: 29.951300 * Longitude: -76.626800 * Date/Time: 1997-01-31T12:00:00 * Elevation: -1345.0 m * Penetration: 119.5 m * Recovery: 115.65 m * Location: Blake Nose, North Atlantic Ocean * Campaign: Leg171B * Basis: Joides Resolution * Device: Drilling/drill rig (DRILL) * Comment: 14 cores; 119.5 m cored; 0 m drilled; 96.8 % recovery
Size:
13 datasets

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Datasets listed in this publication series

  1. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 1) Age model of ODP Site 171-1052. https://doi.org/10.1594/PANGAEA.81335
  2. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 1) Depth model of ODP Hole 171-1052A. https://doi.org/10.1594/PANGAEA.81326
  3. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 1) Depth model of ODP Hole 171-1052B. https://doi.org/10.1594/PANGAEA.81327
  4. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 1) Depth model of ODP Hole 171-1052C. https://doi.org/10.1594/PANGAEA.81328
  5. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 1) Depth model of ODP Hole 171-1052D. https://doi.org/10.1594/PANGAEA.81329
  6. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 1) Depth model of ODP Hole 171-1052F. https://doi.org/10.1594/PANGAEA.81330
  7. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 2) XRF counts of ODP Hole 171-1052A sediments. https://doi.org/10.1594/PANGAEA.81322
  8. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 2) XRF counts of ODP Hole 171-1052B sediments. https://doi.org/10.1594/PANGAEA.81323
  9. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 2) XRF counts of ODP Hole 171-1052C sediments. https://doi.org/10.1594/PANGAEA.81324
  10. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 2) XRF counts of ODP Hole 171-1052F sediments. https://doi.org/10.1594/PANGAEA.81325
  11. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 3) Ca/Fe ratio of ODP Site 171-1052. https://doi.org/10.1594/PANGAEA.81332
  12. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Appendix 3) Color data of ODP Site 171-1052. https://doi.org/10.1594/PANGAEA.81333
  13. Pälike, H; Shackleton, NJ; Röhl, U (2001): (Table 1) Ash layer occurrence in ODP Site 171-1052. https://doi.org/10.1594/PANGAEA.713704