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Weber, Michael E; Wiedicke-Hombach, Michael; Riech, Volkher; Erlenkeuser, Helmut (1995): Geochemistry and physics on sediment cores from the Peru Basin [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.761570, Supplement to: Weber, ME et al. (1995): Carbonate preservation history in the Peru Basin: Paleoceanographic implications. Paleoceanography, 10(4), 775-800, https://doi.org/10.1029/95PA01566

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Abstract:
We studied preservation/dissolution cycles and paleoproductivity in eight sediment cores from the Peru Basin south of the highly productive surface waters of the eastern equatorial Pacific. Stratigraphy is based on stable oxygen isotopes and on combined magnetostratigraphy and biostratigraphy. Sediment cores which span the last 8 m.y., were retrieved during cruise 79 with RV SONNE close to the carbonate compensation depth (CCD). In general, sediments show Pacific-type carbonate cycles. We interpret a pronounced carbonate peak between 6 and 7 Ma as the result of a western and northern extension of the highly productive Peru Current. Decreased carbonate contents from the late Miocene to the late Pliocene might be associated with a slow contraction of the latitudinal extent of the high-productivity belt north of the study areas. During the Pliocene, carbonate variations showed 400 kyr cycles indicating the growth and decay of ice sheets, which should have been associated with pulsations of the Antarctic ice cap. An abrupt collapse of the carbonate system occurred at 2.4 Ma. Higher frequency variations of the carbonate record indicate the major increase of the northern hemisphere glaciation. During the Quaternary, carbonate fluxes are high during glacials and low during interglacials. Large amplitude variations with long broad minima and maxima, associated with small migrations of the lysocline and the CCD (< 200 m), are indicative of the preservation/dissolution history in the Peru Basin. During the early Pleistocene, climatic forcing by the 41 kyr obliquity cycle is not observed in the carbonate record. During the last 800 kyr, variability in the carbonate record was dominated by the 100 kyr eccentricity cycle. Fluxes of biogenic material (calcium carbonate, organic carbon, opal, and barium) were greatest during glacials, which imply higher productivity and export production of the Peru Current during cold climatic periods. Dissolution was greatest during interglacials as inferred from the relatively poor preservation of planktonic foraminifera and from the low accumulation rate of carbonate. After the Mid-Brunhes Event (400 ka), we observe a plateaulike shift to enhanced dissolution and to intensified productivity.
Coverage:
Median Latitude: -7.477895 * Median Longitude: -90.614888 * South-bound Latitude: -8.781700 * West-bound Longitude: -90.917000 * North-bound Latitude: -6.463300 * East-bound Longitude: -90.297500
Date/Time Start: 1992-04-25T00:00:00 * Date/Time End: 1992-05-29T00:00:00
Event(s):
SO79_1KG (GIK15555-1) * Latitude: -6.463300 * Longitude: -90.399800 * Date/Time: 1992-04-25T00:00:00 * Elevation: -4119.0 m * Recovery: 0.55 m * Location: Peru Basin * Campaign: SO79 (SEDIPERU - TUSCH) * Basis: Sonne * Method/Device: Box corer (Reineck) (BCR) * Comment: GPS, Mn nodules
SO79_5MC * Latitude: -7.103200 * Longitude: -90.795700 * Date/Time: 1992-04-28T00:00:00 * Elevation: -4168.0 m * Recovery: 0.32 m * Location: Peru Basin * Campaign: SO79 (SEDIPERU - TUSCH) * Basis: Sonne * Method/Device: MultiCorer (MUC) * Comment: GPS,
SO79_6KL * Latitude: -6.751700 * Longitude: -90.816800 * Date/Time: 1992-04-28T00:00:00 * Elevation: -4242.0 m * Recovery: 8.18 m * Location: Peru Basin * Campaign: SO79 (SEDIPERU - TUSCH) * Basis: Sonne * Method/Device: Piston corer (BGR type) (KL) * Comment: GPS,
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
182 datasets

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Datasets listed in this publication series

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  1. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-108KL. https://doi.org/10.1594/PANGAEA.352511
  2. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-108KL. https://doi.org/10.1594/PANGAEA.354309
  3. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-108SL. https://doi.org/10.1594/PANGAEA.351669
  4. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-108SL. https://doi.org/10.1594/PANGAEA.352513
  5. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-117KG. https://doi.org/10.1594/PANGAEA.351608
  6. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-117KG. https://doi.org/10.1594/PANGAEA.351472
  7. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-119KL. https://doi.org/10.1594/PANGAEA.351609
  8. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-119KL. https://doi.org/10.1594/PANGAEA.132145
  9. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-119KL. https://doi.org/10.1594/PANGAEA.351473
  10. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-119KL. https://doi.org/10.1594/PANGAEA.352517
  11. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-120MC. https://doi.org/10.1594/PANGAEA.351611
  12. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-120MC. https://doi.org/10.1594/PANGAEA.132146
  13. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-120MC. https://doi.org/10.1594/PANGAEA.351475
  14. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-122KG. https://doi.org/10.1594/PANGAEA.351612
  15. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-122KG. https://doi.org/10.1594/PANGAEA.132147
  16. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-122KG. https://doi.org/10.1594/PANGAEA.351476
  17. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-122KG. https://doi.org/10.1594/PANGAEA.352520
  18. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-123KL. https://doi.org/10.1594/PANGAEA.351613
  19. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-123KL. https://doi.org/10.1594/PANGAEA.132148
  20. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-125MC. https://doi.org/10.1594/PANGAEA.351614
  21. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-125MC. https://doi.org/10.1594/PANGAEA.351477
  22. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-129KG. https://doi.org/10.1594/PANGAEA.351615
  23. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-129KG. https://doi.org/10.1594/PANGAEA.132149
  24. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-129KG. https://doi.org/10.1594/PANGAEA.351478
  25. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-130KL. https://doi.org/10.1594/PANGAEA.351616
  26. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-130KL. https://doi.org/10.1594/PANGAEA.354311
  27. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-136KL. https://doi.org/10.1594/PANGAEA.351617
  28. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Shear strength measured on sediment core SO79-136KL. https://doi.org/10.1594/PANGAEA.351457
  29. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-136KL. https://doi.org/10.1594/PANGAEA.354312
  30. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-137MC. https://doi.org/10.1594/PANGAEA.351618
  31. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-140KG. https://doi.org/10.1594/PANGAEA.351619
  32. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-140KG. https://doi.org/10.1594/PANGAEA.132150
  33. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-140KG. https://doi.org/10.1594/PANGAEA.351479
  34. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-141KL. https://doi.org/10.1594/PANGAEA.351620
  35. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-141KL. https://doi.org/10.1594/PANGAEA.132151
  36. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-141KL. https://doi.org/10.1594/PANGAEA.354313
  37. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-142KG. https://doi.org/10.1594/PANGAEA.351621
  38. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-142KG. https://doi.org/10.1594/PANGAEA.132152
  39. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-142KG. https://doi.org/10.1594/PANGAEA.351480
  40. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-147KL. https://doi.org/10.1594/PANGAEA.351622
  41. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-147KL. https://doi.org/10.1594/PANGAEA.354314
  42. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (validated): Calcium carbonate content of sediment core SO79-151KG. https://doi.pangaea.de/10.1594/PANGAEA.351623
  43. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-151KG. https://doi.org/10.1594/PANGAEA.351481
  44. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-151KG. https://doi.org/10.1594/PANGAEA.354315
  45. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-153KG. https://doi.org/10.1594/PANGAEA.351624
  46. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-153KG. https://doi.org/10.1594/PANGAEA.132153
  47. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-153KG. https://doi.org/10.1594/PANGAEA.351482
  48. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-154KL. https://doi.org/10.1594/PANGAEA.351625
  49. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-154KL. https://doi.org/10.1594/PANGAEA.354316
  50. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-159KG. https://doi.org/10.1594/PANGAEA.351626
  51. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-159KG. https://doi.org/10.1594/PANGAEA.351483
  52. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-159KG. https://doi.org/10.1594/PANGAEA.354317
  53. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-160KA. https://doi.org/10.1594/PANGAEA.351628
  54. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-160KA. https://doi.org/10.1594/PANGAEA.351484
  55. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-162MC. https://doi.org/10.1594/PANGAEA.351629
  56. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-162MC. https://doi.org/10.1594/PANGAEA.351485
  57. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-164KL. https://doi.org/10.1594/PANGAEA.351630
  58. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-164KL. https://doi.org/10.1594/PANGAEA.132154
  59. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Shear strength measured on sediment core SO79-164KL. https://doi.org/10.1594/PANGAEA.351458
  60. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-164KL. https://doi.org/10.1594/PANGAEA.354318
  61. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Shear strength measured on sediment core SO79-165KG. https://doi.org/10.1594/PANGAEA.351459
  62. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-165KG. https://doi.org/10.1594/PANGAEA.351486
  63. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-165KG. https://doi.org/10.1594/PANGAEA.354319
  64. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-167KG. https://doi.org/10.1594/PANGAEA.351631
  65. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-167KG. https://doi.org/10.1594/PANGAEA.132155
  66. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-167KG. https://doi.org/10.1594/PANGAEA.351487
  67. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-167KG. https://doi.org/10.1594/PANGAEA.354320
  68. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-169KL. https://doi.org/10.1594/PANGAEA.351632
  69. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-169KL. https://doi.org/10.1594/PANGAEA.132156
  70. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Shear strength measured on sediment core SO79-169KL. https://doi.org/10.1594/PANGAEA.351460
  71. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-169KL. https://doi.org/10.1594/PANGAEA.354321
  72. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-170KG. https://doi.org/10.1594/PANGAEA.351633
  73. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-170KG. https://doi.org/10.1594/PANGAEA.132157
  74. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Shear strength measured on sediment core SO79-170KG. https://doi.org/10.1594/PANGAEA.351461
  75. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-170KG. https://doi.org/10.1594/PANGAEA.351488
  76. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-170KG. https://doi.org/10.1594/PANGAEA.354322
  77. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-173KG. https://doi.org/10.1594/PANGAEA.351634
  78. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-173KG. https://doi.org/10.1594/PANGAEA.351489
  79. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Physical properties of sediment core SO79-173KG. https://doi.org/10.1594/PANGAEA.354323
  80. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Calcium carbonate content of sediment core SO79-175KG. https://doi.org/10.1594/PANGAEA.351635
  81. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Geochemistry on sediment core SO79-175KG. https://doi.org/10.1594/PANGAEA.132158
  82. Weber, ME; Wiedicke-Hombach, M; Riech, V et al. (1995): Total organic carbon content of sediment core SO79-175KG. https://doi.org/10.1594/PANGAEA.351490

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