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Duplessy, Jean-Claude (1982): Stable carbon and oxygen isotope ratios of foraminifera from North Atlantic sediments [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.726217, Supplement to: Duplessy, J-C (1982): North Atlantic deep water circulation during the last climate cycle. Bulletin de l'Institut de Geologie du Bassin d'Aquitaine, 31, 379-391

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Abstract:
Oxygen-18 records of benthic foraminifera from the Atlantic Ocean are significantly different from those of the Pacific and Indian Oceans indicating that the Glacial North Atlantic Deep Water was about 1.3°C cooler than today because different deep water sources appeared in the North Atlantic Ocean during glacial times. The present study seeks to interprete carbon-13 records of planktonic and benthic foraminifera as a tracer of the cycle of the CO2 dissolved in surface and deep water of the ocean during the last climatic cycle.
Carbon-13 records of planktonic foraminifera indicate that the delta13C of atmospheric CO2 and total CO2 dissolved in surface water did not vary noticeably (-0.2 +/- 0.3 per mil) during glacial times.
Carbon-13 records of benthic foraminifera indicate that the eastern North Atlantic Ocean was an area of deep water formation dying isotopic stage 2, but not during most of stage 3. Moreover, large delta13C differences in the NADW between 20°N and 50°N show that the residence time of the glacial NADW was about 4 times that of today.
Coverage:
Median Latitude: 2.827478 * Median Longitude: 48.236000 * South-bound Latitude: -43.490000 * West-bound Longitude: -86.091300 * North-bound Latitude: 54.633300 * East-bound Longitude: 96.067000
Date/Time Start: 1969-05-19T00:00:00 * Date/Time End: 1979-11-15T00:00:00
Event(s):
70-506D * Latitude: 0.607000 * Longitude: -86.091300 * Date/Time: 1979-11-15T00:00:00 * Elevation: -2707.0 m * Penetration: 31.9 m * Recovery: 29.2 m * Location: North Pacific/MOUND * Campaign: Leg70 * Basis: Glomar Challenger * Method/Device: Drilling/drill rig (DRILL) * Comment: 9 cores; 31.9 m cored; 0 m drilled; 91.6 % recovery
CH73-139 (CH73-139C) * Latitude: 54.633300 * Longitude: -16.350000 * Date/Time: 1973-01-01T00:00:00 * Elevation: -2209.0 m * Campaign: CH7X * Basis: Jean Charcot * Method/Device: Piston corer (PC)
MD76-131 * Latitude: 15.530000 * Longitude: 72.568300 * Date/Time: 1976-01-01T00:00:00 * Elevation: -1230.0 m * Recovery: 9.5 m * Location: Indian Ocean * Campaign: MD10 (OSIRIS II) * Basis: Marion Dufresne (1972) * Method/Device: Piston corer (PC)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
9 datasets

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Datasets listed in this publication series

  1. Duplessy, J-C (1982): (Table 4) Stable carbon and oxygen isotope ratios of Uvigerina species from sediment core 70-506D. https://doi.org/10.1594/PANGAEA.726212
  2. Duplessy, J-C (1982): (Table 6) Stable carbon and oxygen isotope ratios of Cibicides species from sediment core CH73-139. https://doi.org/10.1594/PANGAEA.726215
  3. Duplessy, J-C (1982): (Table 7) Age determination of sediment core MD73-025. https://doi.org/10.1594/PANGAEA.726216
  4. Duplessy, J-C (1982): (Table 3) Stable carbon and oxygen isotope ratios of Melonis sp. from sediment core MD73-025. https://doi.org/10.1594/PANGAEA.726208
  5. Duplessy, J-C (1982): (Table 2) Stable carbon and oxygen isotope ratios of Globigerinoides ruber from sediment core MD76-131. https://doi.org/10.1594/PANGAEA.726201
  6. Duplessy, J-C (1982): (Table 2) Stable carbon and oxygen isotope ratios of Globigerinoides ruber from sediment core MD77-169. https://doi.org/10.1594/PANGAEA.726202
  7. Duplessy, J-C (1982): (Table 2) Stable carbon and oxygen isotope ratios of Globigerinoides ruber from sediment core MD77-171. https://doi.org/10.1594/PANGAEA.726203
  8. Duplessy, J-C (1982): (Table 5) Stable carbon and oxygen isotope ratios of Uvigerina spp. from sediment core MD77-191. https://doi.org/10.1594/PANGAEA.726213
  9. Duplessy, J-C (1982): (Table 2) Stable carbon and oxygen isotope ratios of Globigerinoides ruber from sediment core RC12-344. https://doi.org/10.1594/PANGAEA.726204