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Schrader, Hans-Jürgen; Sorknes, Ragnhild (1990): Diatom distribution in sediments of the Peruvian coastal upwelling [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.753587, Supplement to: Schrader, H-J; Sorknes, R (1990): Spatial and temporal variation of Peruvian Coastal upwelling during the latest Quaternary. In: Suess, E; von Huene, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 112, 391-406, https://doi.org/10.2973/odp.proc.sr.112.188.1990

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Abstract:
Two shelf and upper-slope sites (681 and 686) near present cores of active coastal upwelling on the Peruvian margin were sampled continuously at 7.5 cm intervals down to approximately 25 meters below the seafloor (mbsf). Sedimentary structures were subdivided into homogeneous/bioturbated, laminated, and laminated-varved intervals. Diatom analysis and statistical treatment of data revealed almost persistent upwelling over the last 400,000 yr, with slightly increased upwelling during oxygen-isotope Stages 3, 5, 7, and 8 that resulted in anoxic bottom-water conditions and deposition of laminated/undisturbed primary sedimentary structures.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: -12.228410 * Median Longitude: -77.424585 * South-bound Latitude: -13.480160 * West-bound Longitude: -77.957670 * North-bound Latitude: -10.976660 * East-bound Longitude: -76.891500
Date/Time Start: 1986-11-07T01:15:00 * Date/Time End: 1986-12-03T11:30:00
Event(s):
112-681A * Latitude: -10.976660 * Longitude: -77.957670 * Date/Time Start: 1986-11-07T01:15:00 * Date/Time End: 1986-11-08T00:00:00 * Elevation: -161.0 m * Penetration: 187 m * Recovery: 112.4 m * Location: South Pacific Ocean * Campaign: Leg112 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 20 cores; 187 m cored; 0 m drilled; 60.1 % recovery
112-686A * Latitude: -13.480160 * Longitude: -76.891500 * Date/Time Start: 1986-12-02T18:15:00 * Date/Time End: 1986-12-03T11:30:00 * Elevation: -454.0 m * Penetration: 205.7 m * Recovery: 181.71 m * Location: South Pacific Ocean * Campaign: Leg112 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 23 cores; 205.7 m cored; 0 m drilled; 88.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

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Datasets listed in this publication series

  1. Schrader, H-J; Sorknes, R (1990): (Table 3) Distribution of diatom groups in ODP Hole 112-681A and 112-686A. https://doi.org/10.1594/PANGAEA.753584
  2. Schrader, H-J; Sorknes, R (1990): (Table 4) Normalized varimax matrix of Model 2 for samples from ODP Hole 112-681A and 112-686A. https://doi.org/10.1594/PANGAEA.753586
  3. Schrader, H-J; Sorknes, R (1990): (Table 4) Varimax end-member composition matrix. https://doi.org/10.1594/PANGAEA.753585