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Ruddiman, William F; Raymo, Maureen E; Martinson, Douglas G; Clement, Bradford M; Backman, Jan (1989): Stable isotope record, calcium carbonate conentrations, and sea surface temperture reconstructions of sediment cores from the North Atlantic. PANGAEA, https://doi.org/10.1594/PANGAEA.701229, Supplement to: Ruddiman, WF et al. (1989): Pleistocene evolution: northern hemisphere ice sheets and North Atlantic Ocean. Paleoceanography, 4(4), 353-412, https://doi.org/10.1029/PA004i004p00353

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Abstract:
We analyze five high-resolution time series spanning the last 1.65 m.y.: benthic foraminiferal delta18O and delta13O, percent CaCO3, and estimated sea surface temperature (SST) at North Atlantic Deep Sea Drilling Project site 607 and percent CaCO3 at site 609. Each record is a multicore composite verified for continuity by splicing among multiple holes. These climatic indices portray changes in northern hemisphere ice sheet size and in North Atlantic surface and deep circulation. By tuning obliquity and precession components in the delta18O record to orbital variations, we have devised a time scale (TP607) for the entire Pleistocene that agrees in age with all K/Ar-dated magnetic reversals to within 1.5%. The Brunhes time scale is taken from Imbrie et al. [1984], except for differences near the stage 17/16 transition (0.70 to 0.64 Ma). All indicators show a similar evolution from the Matuyama to the Brunhes chrons: orbital eccentricity and precession responses increased in amplitude; those at orbital obliquity decreased. The change in dominance from obliquity to eccentricity occurred over several hundred thousand years, with fastest changes around 0.7 to 0.6 Ma. The coherent, in-phase responses of delta18O, delta13O, CaCO3 and SST at these rhythms indicate that northern hemisphere ice volume changes have controlled most of the North Atlantic surface-ocean and deep-ocean responses for the last 1.6 m.y. The delta13O, percent CaCO3, and SST records at site 607 also show prominent changes at low frequencies, including a prominent long-wavelength oscillation toward glacial conditions that is centered between 0.9 and 0.6 Ma. These changes appear to be associated neither with orbital forcing nor with changes in ice volume.
Project(s):
Coverage:
Median Latitude: 42.973511 * Median Longitude: -31.013656 * South-bound Latitude: 41.000000 * West-bound Longitude: -32.957300 * North-bound Latitude: 49.877800 * East-bound Longitude: -24.238200
Date/Time Start: 1973-05-28T00:00:00 * Date/Time End: 1983-07-22T00:00:00
Event(s):
94-607_Site * Latitude: 41.001200 * Longitude: -32.957300 * Date/Time: 1983-07-06T00:00:00 * Elevation: -3427.0 m * Penetration: 5.957 m * Recovery: 4.537 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Composite Core (COMPCORE) * Comment: 56 cores; 511 m cored; 0 m drilled; 88.8% recovery
94-609_Site * Latitude: 49.877800 * Longitude: -24.238200 * Date/Time: 1983-07-22T00:00:00 * Elevation: -3883.0 m * Penetration: 9.875 m * Recovery: 6.624 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Composite Core (COMPCORE) * Comment: 85 cores; 802.1 m cored; 38.4 m drilled; 82.6% recovery
V30-97 * Latitude: 41.000000 * Longitude: -32.930000 * Date/Time: 1973-05-28T00:00:00 * Elevation: -3371.0 m * Recovery: 9.19 m * Campaign: V30 * Basis: Vema * Method/Device: Piston corer (PC)
Size:
10 datasets

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Datasets listed in this publication series

  1. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table 6) Ages of oxygen isotopic stages between 1.60 and 0.734 Ma of DSDP Site 94-607 in the North Atlantic. https://doi.org/10.1594/PANGAEA.51853
  2. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table 7) Estimates of magnetic reversal ages from stable oxygen isotope record of DSDP Site 94-607 in the North Atlantic. https://doi.org/10.1594/PANGAEA.51852
  3. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table 7) Estimates of magnetic reversal ages from stable oxygen isotope record of DSDP Site 94-609 in the North Atlantic. https://doi.org/10.1594/PANGAEA.52376
  4. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table A1) Calcium carbonate content of DSDP Site 94-607 in the North Atlantic. https://doi.org/10.1594/PANGAEA.52371
  5. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table A1) Stable carbon and oxygen isotope ratios of benthic foraminifera from DSDP Site 94-607 in the North Atlantic. https://doi.org/10.1594/PANGAEA.418231
  6. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table A2) Sea surface temperature reconstruction of DSDP Site 94-607 in the North Atlantic. https://doi.org/10.1594/PANGAEA.52373
  7. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table A3) Calcium carbonate concentrations of DSDP Site 94-609 in the North Atlantic. https://doi.org/10.1594/PANGAEA.52375
  8. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table A4) Stacked stable isotope record of sediment cores from the North Atlantic. https://doi.org/10.1594/PANGAEA.701202
  9. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table A5) Distribution of planktic foraminifera and sea surface temperature reconstruction of sediment core V30-97 in the North Atlantic. https://doi.org/10.1594/PANGAEA.52377
  10. Ruddiman, WF; Raymo, ME; Martinson, DG et al. (1989): (Table A6) Calcium carbonate concentrations of sediment core V30-97 in the North Atlantic. https://doi.org/10.1594/PANGAEA.52378