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Wei, Wuchang (1992): Calcareous nannofossils in sediments of the southeast Pacific [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.760349, Supplement to: Wei, W (1992): Calcareous nannofossil stratigraphy and reassessment of the Eocene glacial record in subantarctic piston cores of the southeast Pacific. In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 1093-1104, https://doi.org/10.2973/odp.proc.sr.120.198.1992

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Abstract:
This study provides the first detailed documentation of calcareous nannofossil assemblages in Eocene subantarctic Eltanin piston cores recovered from the southeast Pacific Ocean. These Eltanin cores are important because they have been reported to contain ice-rafted quartz. The present study confirms early and middle Eocene ages for the cores and dates them more precisely using calcareous nannofossils. Semiquantitative study of the nannoflora indicates that they are of a warmer water character than those from the higher latitudes (such as Falkland Plateau, Maud Rise, and Kerguelen Plateau). This study concludes that it is unlikely for the ice-rafted quartz in the Eocene sections to be downcore contaminants from the overlying Neogene sediment and suggests that the grains are probably the result of Eocene ice-rafting from Antarctica when the Drake Passage was closed and water circulation patterns were different from those of today.
Coverage:
Median Latitude: -44.800750 * Median Longitude: -123.889825 * South-bound Latitude: -57.770000 * West-bound Longitude: -135.133000 * North-bound Latitude: -37.967000 * East-bound Longitude: -90.793300
Date/Time Start: 1964-01-01T00:00:00 * Date/Time End: 1966-01-01T00:00:00
Event(s):
ELT13.004-PC * Latitude: -57.770000 * Longitude: -90.793300 * Date/Time: 1964-01-01T00:00:00 * Elevation: -4700.0 m * Recovery: 17.05 m * Campaign: ELT13 * Basis: Eltanin * Method/Device: Piston corer (PC)
ELT24.008-PC * Latitude: -42.883000 * Longitude: -134.650000 * Date/Time: 1966-01-01T00:00:00 * Elevation: -5104.0 m * Recovery: 6.05 m * Campaign: ELT24 * Basis: Eltanin * Method/Device: Piston corer (PC)
ELT24.009-PC * Latitude: -40.583000 * Longitude: -135.133000 * Date/Time: 1966-01-01T00:00:00 * Elevation: -4924.0 m * Recovery: 6.24 m * Campaign: ELT24 * Basis: Eltanin * Method/Device: Piston corer (PC)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
4 datasets

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Datasets listed in this publication series

  1. Wei, W (1992): (Figure 2) Distribution of calcareous nannofossils in sediment core ELT13.004-PC. https://doi.org/10.1594/PANGAEA.760345
  2. Wei, W (1992): (Figure 3) Distribution of calcareous nannofossils in sediment core ELT24.008-PC. https://doi.org/10.1594/PANGAEA.760346
  3. Wei, W (1992): (Figure 4) Distribution of calcareous nannofossils in sediment core ELT24.009-PC. https://doi.org/10.1594/PANGAEA.760347
  4. Wei, W (1992): (Figure 5) Distribution of calcareous nannofossils in sediment core ELT24.010-PC. https://doi.org/10.1594/PANGAEA.760348