Nelson, Campbell S; Hendy, Chris H; Dudley, Walter C (1986): Quaternary isotope stratigraphy of DSDP Hole 90-593 from the Challenegr Plateau, South Tasman Sea [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.683884, Supplement to: Nelson, CS et al. (1986): Quaternary isotope stratigraphy of Hole 593, Challenger Plateau, South Tasman Sea: Preliminary observations based on foraminifers and calcareous nannofossils. In: Kennett, JP; von der Borch, CC; et al. (eds.), Initial Reports of the Deep Sea Drilling Project, Washington (U.S. Govt. Printing Office), 90, 1413-1424, https://doi.org/10.2973/dsdp.proc.90.143.1986
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
A moderate-resolution isotope stratigraphy (with an average of one sample per 17,500 yr.) derived from the benthic foraminifer Uvigerina (or Cibicides), the planktonic foraminifer Globigerina bulloides, and calcareous nannofossil concentrates is presented for the entire Quaternary (and latest Pliocene) section of mid-upper bathyal calcareous oozes from DSDP Site 593, western Challenger Plateau, south Tasman Sea. Superimposed on a trend of gradually increasing average delta18O values through the Pleistocene, reflecting the progressive buildup of polar ice sheets, is a record of highfrequency but generally low amplitude (0.5-1‰) isotope fluctuations in the early Quaternary (1.9-1.0 m.y.), followed by a greatly increased intensity (1.5-2.0 ‰) of glacial-interglacial fluctuations during the late Quaternary (< 1.0 m.y.). The standard late Quaternary isotope stages 1 to 24 are mainly resolvable. Significant excursions in both delta18O and delta13C values at various times during the Quaternary are suggested to be due to periodic, fundamental changes in ocean circulation properties over the plateau. For example, intensified upwelling of Antarctic Intermediate Waters during several glacial periods is indicated by the convergence of benthic and planktonic foraminiferal delta18O data, and productivity variations may account for certain delta13C spikes in the record. With increasingly higher resolution analysis this core will provide a useful Quaternary isotope reference section for southern temperate waters in the southwest Pacific, centered on New Zealand.
Project(s):
Deep Sea Drilling Project (DSDP)
Coverage:
Latitude: -40.507800 * Longitude: 167.674500
Date/Time Start: 1982-12-28T00:00:00 * Date/Time End: 1982-12-28T00:00:00
Event(s):
90-593 * Latitude: -40.507800 * Longitude: 167.674500 * Date/Time: 1982-12-28T00:00:00 * Elevation: -1068.0 m * Penetration: 571.5 m * Recovery: 469.5 m * Location: South Pacific/Tasman Sea/PLATEAU * Campaign: Leg90 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 58 cores; 550.5 m cored; 19.2 m drilled; 85.3 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Nelson, CS; Hendy, CH; Dudley, WC (1986): (Table 1) Stable carbon and oxygen isotope ratios of foraminifera and nannoplankton in late Quaternary sediments of DSDP Hole 90-593 from the Challenger Plateau, South Tasman Sea. https://doi.org/10.1594/PANGAEA.683882
- Nelson, CS; Hendy, CH; Dudley, WC (1986): (Table 3) Average sedimentation rates in the Quaternary of DSDP Hole 90-593 from the Challenger Plateau, South Tasman Sea. https://doi.org/10.1594/PANGAEA.683883