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Raymo, Maureen E; Hodell, David A; Jansen, Eystein (1992): Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.701317, Supplement to: Raymo, ME et al. (1992): Response of deep ocean circulation to initiation of Northern Hemisphere glaciation (3-2 MA). Paleoceanography, 7(5), 645-672, https://doi.org/10.1029/92PA01609

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Abstract:
Carbon isotopic records from benthic foraminifera are used to map patterns of deep ocean circulation between 3 and 2 million years ago, the interval when significant northern hemisphere glaciation began. The delta18O and delta13C data from four Atlantic sites (552, 607, 610, and 704) and one Pacific site (677) show that global cooling over this interval was associated with increased suppression of North Atlantic Deep Water (NADW) formation. However, the relative strength of NADW production was always greater than is observed during late Pleistocene glaciations when extreme decreases in NADW are observed in the deep North Atlantic. Our data indicate that an increase in the equator-to-pole temperature gradient associated with the onset of northern hemisphere glaciation did not intensify deepwater production in the North Atlantic but rather the opposite occurred. This is not unexpected as it is the "warm high-salinity" characteristic, rather than the "low temperature", of thermocline waters that is critical to the deepwater formation process in this region today.
Project(s):
Deep Sea Drilling Project (DSDP)
Ocean Drilling Program (ODP)
Coverage:
Median Latitude: 20.917740 * Median Longitude: -30.278320 * South-bound Latitude: -46.879000 * West-bound Longitude: -83.737000 * North-bound Latitude: 56.042700 * East-bound Longitude: 7.420800
Date/Time Start: 1981-07-31T00:00:00 * Date/Time End: 1987-04-26T06:54:00
Event(s):
81-552A * Latitude: 56.042700 * Longitude: -23.231300 * Date/Time: 1981-07-31T00:00:00 * Elevation: -2301.0 m * Penetration: 183.5 m * Recovery: 182.3 m * Location: North Atlantic/PLATEAU * Campaign: Leg81 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 38 cores; 183.5 m cored; 0 m drilled; 99.4 % recovery
94-607 * Latitude: 41.001200 * Longitude: -32.957300 * Date/Time: 1983-07-06T00:00:00 * Elevation: -3427.0 m * Penetration: 284.4 m * Recovery: 248.6 m * Location: North Atlantic/FLANK * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 30 cores; 284.4 m cored; 0 m drilled; 87.4 % recovery
94-610A * Latitude: 53.221500 * Longitude: -18.886800 * Date/Time: 1983-07-28T00:00:00 * Elevation: -2417.0 m * Penetration: 201 m * Recovery: 191.4 m * Location: North Atlantic/RIDGE * Campaign: Leg94 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 21 cores; 201 m cored; 0 m drilled; 95.2 % recovery
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
10 datasets

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Datasets listed in this publication series

  1. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table 3) Age model of DSDP Hole 81-552A in the North Atlantic. https://doi.org/10.1594/PANGAEA.358424
  2. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table A1) Stable carbon and oxygen isotope ratios of Cibicidoides spp. from DSDP Hole 81-552A in the North Atlantic. https://doi.org/10.1594/PANGAEA.55484
  3. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table A2) Stable carbon and oxygen isotope ratios of Cibicidoides spp. from DSDP Hole 94-607 in the North Atlantic. https://doi.org/10.1594/PANGAEA.358431
  4. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table 3) Age model of DSDP Hole 94-607 in the North Atlantic. https://doi.org/10.1594/PANGAEA.358425
  5. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table A3) Stable carbon and oxygen isotope ratios of Cibicidoides spp. from DSDP Hole 94-610A in the North Atlantic. https://doi.org/10.1594/PANGAEA.358432
  6. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table 3) Age model of DSDP Hole 94-610A in the North Atlantic. https://doi.org/10.1594/PANGAEA.358426
  7. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table A5) Stable carbon and oxygen isotope ratios of Cibicidoides spp. from ODP Hole 111-677A in the North Pacific. https://doi.org/10.1594/PANGAEA.358429
  8. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table 3) Age model of ODP Hole 111-677A in the North Pacific. https://doi.org/10.1594/PANGAEA.358422
  9. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table A4) Stable carbon and oxygen isotope ratios of Cibicidoides spp. from ODP Hole 114-704A in the Southern Ocean. https://doi.org/10.1594/PANGAEA.358430
  10. Raymo, ME; Hodell, DA; Jansen, E (1992): (Table 3) Age model of ODP Hole 114-704A in the Southern Ocean. https://doi.org/10.1594/PANGAEA.358423