Bard, Edouard; Fairbanks, Richard G; Maurice, Pierre; Duprat, Josette M; Moyes, Jean; Duplessy, Jean-Claude (1989): Age determination of North Atlantic sediment cores. PANGAEA, https://doi.org/10.1594/PANGAEA.726266, Supplement to: Bard, E et al. (1989): Sea level estimates during the last deglaciation based on d18O and accelerator mass spectrometry 14C ages measured on Globigerina bulloides. Quaternary Research, 31(3), 381-391, https://doi.org/10.1016/0033-5894(89)90045-8
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Coupled measurements of delta18O and accelerator mass spectrometry (AMS) 14C in a particular species of planktonic foraminifera may be used to calculate sea-level estimates for the last deglaciation. Of critical importance for this type of study is a knowledge of the seasonality of foraminiferal growth, which can be provided by delta18O measurements of modern shells (core tops, plankton tows). Isotopic (delta18O, AMS-14C dating) and faunal records (transfer function sea surface temperature) were obtained from two cores in the North Atlantic at about 37°N. The locations were chosen to obtain high sedimentation rate records removed from the major ice-melt discharge areas of the last deglaciation. Based upon Globigerina bulloides data, four delta18O-based sea-level estimates were calculated: -67 +/- 7 m at 12,200 yr B.P. and -24 +/- 8 m at about 8200 yr B.P. for core SU81-18; -83 +/- 10 m at 12,200 yr B.P. and -13 +/- 11 m at about 8500 yr B.P. for core SU81-14. Using a second working hypothesis concerning the seasonability of G. bulloides growth, it is suggested that the sea-level rose by about 40 m during the millennium which followed 14,500 yr B.P.
Median Latitude: 37.331333 * Median Longitude: -9.958667 * South-bound Latitude: 36.460000 * West-bound Longitude: -10.183000 * North-bound Latitude: 37.767000 * East-bound Longitude: -9.510000
Date/Time Start: 1981-01-01T00:00:00 * Date/Time End: 1981-01-01T00:00:00
SU81-14 * Latitude: 36.460000 * Longitude: -9.510000 * Date/Time: 1981-01-01T00:00:00 * Elevation: -2795.0 m * Recovery: 4.28 m * Location: Atlantic Ocean * Campaign: CEPAG * Basis: Le Suroît * Method/Device: Piston corer (PC)
SU81-18 * Latitude: 37.767000 * Longitude: -10.183000 * Date/Time: 1981-01-01T00:00:00 * Elevation: -3155.0 m * Recovery: 7 m * Location: Atlantic Ocean * Campaign: CEPAG * Basis: Le Suroît * Method/Device: Piston corer (PC)
Datasets listed in this publication series
- Bard, E; Fairbanks, RG; Maurice, P et al. (1989): (Table 1) Age determination of sediment core SU81-18. https://doi.org/10.1594/PANGAEA.407092
- Bard, E; Fairbanks, RG; Maurice, P et al. (1989): (Table 2) Age determination of sediment core SU81-14. https://doi.org/10.1594/PANGAEA.726265
- Bard, E; Fairbanks, RG; Maurice, P et al. (1989): Stable isotope analysis on sediment core SU81-18. https://doi.org/10.1594/PANGAEA.107122