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Vautravers, Maryline J; Shackleton, Nicholas J; López-Martinez, Constancia; Grimalt, Joan O (2004): Sedimentology, planktonic foraminifera distribution and stable isotope composition during marine isotope stage 3 of ODP Site 172-1060 in the West Atlantic [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.707201, Supplement to: Vautravers, MJ et al. (2004): Gulf Stream variability during marine isotope stage 3. Paleoceanography, 19(2), PA2011, https://doi.org/10.1029/2003PA000966

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Abstract:
We have studied Ocean Drilling Program Site 1060 on the Blake Outer Ridge, which lies beneath the Gulf Stream. We focus on marine isotope stage 3, 60-25 thousand years before present (ka). Sea surface temperatures (SSTs) inferred both from foraminiferal fauna and alkenone ratios, as well as counts of iceberg melt-out debris and benthic stable isotope analyses, enable our record to be interpreted in terms of regional hydrographic changes as well as changing thermohaline circulation (THC). The observed SST record is consistent with the air temperature record from the Greenland ice cores. However, Site 1060 exhibits important differences in detail compared with the ice core record, and when compared to other sites within the North Atlantic, significant longitudinal differences emerge. At Site 1060 in the western Atlantic, all Greenland stadials (GS) whether associated with Heinrich events (HEs) or not, show a similar small amplitude of cooling; mean faunal-based SSTaug during GS is only 1.5°C colder than during Greenland interstadials (GIS). In addition, during GS the coldest SSTs are limited to apparently brief events. This is in contrast to several eastern Atlantic sites where HE stadials exhibit coolings that are enhanced by 2°C compared to other GS and where cold conditions are not restricted to cold pulses but cover 2 ka-long intervals. Furthermore, Site 1060 SSTs remained warm right through each interstadial, in contrast to the sustained and uniform cooling trend through interstadials that is consistently observed in Greenland, indicated by measurements of delta18O in ice.
Related to:
Hoogakker, Babette A A; McCave, I Nick; Vautravers, Maryline J (2007): Antarctic link to deep flow speed variation during Marine Isotope Stage 3 in the western North Atlantic. Earth and Planetary Science Letters, 257(3-4), 463-473, https://doi.org/10.1016/j.epsl.2007.03.003
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 30.759694 * Longitude: -74.466500
Date/Time Start: 1997-03-05T00:00:00 * Date/Time End: 1997-03-05T00:00:00
Event(s):
172-1060 * Latitude: 30.759694 * Longitude: -74.466500 * Date/Time: 1997-03-05T00:00:00 * Elevation: -3481.1 m * Penetration: 426.5 m * Recovery: 442.8 m * Location: Blake-Bahama Outer Ridge, North Atlantic Ocean * Campaign: Leg172 * Basis: Joides Resolution * Method/Device: Composite Core (COMPCORE) * Comment: 46 cores; 426.5 m cored; 0 m drilled; 103.8% recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
6 datasets

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Datasets listed in this publication series

  1. Vautravers, MJ; Shackleton, NJ; López-Martinez, C et al. (2004): (Table 2) Proposed ages of rapid δ¹³C changes at ODP Site 172-1060. https://doi.org/10.1594/PANGAEA.707195
  2. Vautravers, MJ; Shackleton, NJ; López-Martinez, C et al. (2004): (Table 1) Age model of ODP Site 172-1060. https://doi.org/10.1594/PANGAEA.707194
  3. Vautravers, MJ; Shackleton, NJ; López-Martinez, C et al. (2004): Distribution of ice-rafted debris in ODP Site 172-1060. https://doi.org/10.1594/PANGAEA.707197
  4. Vautravers, MJ; Shackleton, NJ; López-Martinez, C et al. (2004): Stable carbon and oxygen isotope ratios of Uvigerina peregrina from ODP Site 172-1060. https://doi.org/10.1594/PANGAEA.707200
  5. Vautravers, MJ; Shackleton, NJ; López-Martinez, C et al. (2004): Distribution of warm and cold planktonic foraminifera species in ODP Site 172-1060. https://doi.org/10.1594/PANGAEA.707199
  6. Vautravers, MJ; Shackleton, NJ; López-Martinez, C et al. (2004): Distribution of quatz in ODP Site 172-1060. https://doi.org/10.1594/PANGAEA.707198