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Weber, Michael E; Pisias, Nicklas G (1999): Age model and color measurements of sediment cores from the eastern equatorial Pacific. PANGAEA, https://doi.org/10.1594/PANGAEA.714902, Supplement to: Weber, ME; Pisias, NG (1999): Spatial and temporal distribution of biogenic carbonate and opal in deep-sea sediments from the eastern equatorial Pacific: implications for ocean history since 1.3 Ma. Earth and Planetary Science Letters, 174(1-2), 59-73, https://doi.org/10.1016/S0012-821X(99)00248-4

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Abstract:
High-resolution records of glacial-interglacial variations in biogenic carbonate, opal, and detritus (derived from non-destructive core log measurements of density, P-wave velocity and color; r >= 0.9) from 15 sediment sites in the eastern equatorial (sampling resolution is ~1 kyr) clear response to eccentricity and precession forcing. For the Peru Basin, we generate a high-resolution (21 kyr increment) orbitally-based chronology for the last 1.3 Ma. Spectral analysis indicates that the 100 kyr cycle became dominant at roughly 1.2 Ma, 200-300 kyr earlier than reported for other paleoclimatic records. The response to orbital forcing is weaker since the Mid-Brunhes Dissolution Event (at 400 ka). A west-east reconstruction of biogenic sedimentation in the Peru Basin (four cores; 91-85°W) distinguishes equatorial and coastal upwelling systems in the western and eastern sites, respectively. A north-south reconstruction perpendicular to the equatorial upwelling system (11 cores, 11°N-°3S) shows high carbonate contents (>= 50%) between 6°N and 4°S and highly variable opal contents between 2°N and 4°S. Carbonate cycles B-6, B-8, B-10, B-12, B-14, M-2, and M-6 are well developed with B-10 (430 ka) as the most prominent cycle. Carbonate highs during glacials and glacial-interglacial transitions extended up to 400 km north and south compared to interglacial or interglacial^glacial carbonate lows. Our reconstruction thus favors glacial-interglacial expansion and contraction of the equatorial upwelling system rather than shifting north or south. Elevated accumulation rates are documented near the equator from 6°N to 4°S and from 2°N to 4°S for carbonate and opal, respectively. Accumulation rates are higher during glacials and glacial-interglacial transitions in all cores, whereas increased dissolution is concentrated on Peru Basin sediments close to the carbonate compensation depth and occurred during interglacials or interglacial-glacial transitions.
Coverage:
Median Latitude: -6.649778 * Median Longitude: -89.557504 * South-bound Latitude: -8.545000 * West-bound Longitude: -90.826300 * North-bound Latitude: -5.108333 * East-bound Longitude: -85.372833
Date/Time Start: 1992-04-28T00:00:00 * Date/Time End: 1996-02-27T00:00:00
Event(s):
SO106/1_181KL (181KL) * Latitude: -6.525667 * Longitude: -90.413333 * Date/Time: 1996-01-08T00:00:00 * Elevation: -4143.0 m * Recovery: 13.03 m * Campaign: SO106/1 (ATESEPP) * Basis: Sonne * Method/Device: Piston corer (BGR type) (KL)
SO106/1_184KL (184KL) * Latitude: -6.556833 * Longitude: -90.518833 * Date/Time: 1996-01-09T00:00:00 * Elevation: -4102.0 m * Recovery: 12.55 m * Campaign: SO106/1 (ATESEPP) * Basis: Sonne * Method/Device: Piston corer (BGR type) (KL)
SO106/1_189KL (189KL) * Latitude: -7.055333 * Longitude: -88.470000 * Date/Time: 1996-01-11T00:00:00 * Elevation: -4163.0 m * Recovery: 12.18 m * Campaign: SO106/1 (ATESEPP) * Basis: Sonne * Method/Device: Piston corer (BGR type) (KL)
Size:
37 datasets

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Datasets listed in this publication series

  1. Weber, ME; Pisias, NG (1999): Age model of sediment core SO106-184KL. https://doi.org/10.1594/PANGAEA.131553
  2. Weber, ME; Pisias, NG (1999): Age model of sediment core SO106-243KL. https://doi.org/10.1594/PANGAEA.131554
  3. Weber, ME; Pisias, NG (1999): Age model of sediment core SO106-286KL. https://doi.org/10.1594/PANGAEA.131555
  4. Weber, ME; Pisias, NG (1999): Age model of sediment core SO79-164KL. https://doi.org/10.1594/PANGAEA.131556
  5. Weber, ME; Pisias, NG (1999): Age model of sediment core SO79-71KL. https://doi.org/10.1594/PANGAEA.131557
  6. Weber, ME; Pisias, NG (1999): Age model of sediment core SO79-77KL. https://doi.org/10.1594/PANGAEA.131558
  7. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-181KL. https://doi.org/10.1594/PANGAEA.354559
  8. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-184KL. https://doi.org/10.1594/PANGAEA.354560
  9. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-189KL. https://doi.org/10.1594/PANGAEA.354561
  10. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-206KL. https://doi.org/10.1594/PANGAEA.354562
  11. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-217KL. https://doi.org/10.1594/PANGAEA.354563
  12. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-222SL. https://doi.org/10.1594/PANGAEA.354564
  13. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-229KL. https://doi.org/10.1594/PANGAEA.354565
  14. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-235KL. https://doi.org/10.1594/PANGAEA.354566
  15. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-243KL. https://doi.org/10.1594/PANGAEA.354567
  16. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-244KA. https://doi.org/10.1594/PANGAEA.354568
  17. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-249KL. https://doi.org/10.1594/PANGAEA.354569
  18. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-251KL. https://doi.org/10.1594/PANGAEA.354570
  19. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-254KL. https://doi.org/10.1594/PANGAEA.354571
  20. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-261KA. https://doi.org/10.1594/PANGAEA.354572
  21. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-268KA. https://doi.org/10.1594/PANGAEA.354573
  22. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-272KA. https://doi.org/10.1594/PANGAEA.354574
  23. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-276KL. https://doi.org/10.1594/PANGAEA.354575
  24. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-278KA. https://doi.org/10.1594/PANGAEA.354576
  25. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO106-286KL. https://doi.org/10.1594/PANGAEA.354577
  26. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-108KL. https://doi.org/10.1594/PANGAEA.354420
  27. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-136KL. https://doi.org/10.1594/PANGAEA.354421
  28. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-164KL. https://doi.org/10.1594/PANGAEA.354422
  29. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-169KL. https://doi.org/10.1594/PANGAEA.354423
  30. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-26KL. https://doi.org/10.1594/PANGAEA.354424
  31. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-48KL. https://doi.org/10.1594/PANGAEA.354425
  32. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-53KL. https://doi.org/10.1594/PANGAEA.354426
  33. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-71KL. https://doi.org/10.1594/PANGAEA.354427
  34. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-77KL. https://doi.org/10.1594/PANGAEA.354428
  35. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-82KL. https://doi.org/10.1594/PANGAEA.354429
  36. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-85KL. https://doi.org/10.1594/PANGAEA.354430
  37. Weber, ME; Pisias, NG (1999): Color measurements on sediment core SO79-9KL. https://doi.org/10.1594/PANGAEA.354431