Medina-Elizalde, Martín; Lea, David W (2005): Geochemistry of Globigerinoides ruber from ODP Hole 130-806B [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.772015, Supplement to: Medina-Elizalde, M; Lea, DW (2005): The Mid-Pleistocene Transition in the Tropical Pacific. Science, 310(5750), 1009-1012, https://doi.org/10.1126/science.1115933
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Abstract:
A sea surface temperature (SST) record based on planktonic foraminiferal magnesium/calcium ratios from a site in the western equatorial Pacific warm pool reveals that glacial-interglacial oscillations in SST shifted from a period of 41,000 to 100,000 years at the mid-Pleistocene transition, 950,000 years before the present. SST changes at both periodicities were synchronous with eastern Pacific cold-tongue SSTs but preceded changes in continental ice volume. The timing and nature of tropical Pacific SST changes over the mid-Pleistocene transition implicate a shift in the periodicity of radiative forcing by atmospheric carbon dioxide as the cause of the switch in climate periodicities at this time.
Project(s):
Ocean Drilling Program (ODP)
Coverage:
Latitude: 0.318500 * Longitude: 159.361000
Date/Time Start: 1990-02-18T21:00:00 * Date/Time End: 1990-02-23T01:30:00
Event(s):
130-806B * Latitude: 0.318500 * Longitude: 159.361000 * Date/Time Start: 1990-02-18T21:00:00 * Date/Time End: 1990-02-23T01:30:00 * Elevation: -2519.9 m * Penetration: 743.1 m * Recovery: 666.36 m * Location: North Pacific Ocean * Campaign: Leg130 * Basis: Joides Resolution * Method/Device: Drilling/drill rig (DRILL) * Comment: 78 cores; 743.1 m cored; 0 m drilled; 89.7 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Medina-Elizalde, M; Lea, DW (2005): (Table S1) Age model of ODP Hole 130-806B. https://doi.org/10.1594/PANGAEA.772013
- Medina-Elizalde, M; Lea, DW (2005): (Table S2) Stable oxygen isotope record and Mg/Ca ratios of Globigerinoides ruber from ODP Hole 130-806B. https://doi.org/10.1594/PANGAEA.772014