Skinner, Luke C; Freeman, Emma; Hodell, David A; Waelbroeck, Claire; Vázquez Riveiros, Natalia; Scrivner, Adam E (2020): Sediment depth age-models, stable carbon isotope data, and radiocarbon data of Atlantic Ocean sediment cores [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.925638
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Abstract:
Sediment depth age-models, stable carbon isotope data, and radiocarbon data are reported for a suite of sediment cores from Iberian- and Brazil Margins, in the Atlantic basin. The sediment sequences span the last deglaciation (~30,000 years to the present). Stable carbon isotopes were measured on the benthic foraminifer species Cibicidoides wuellerstorfi, in the Godwin Laboratory, University of Cambridge. Each measurement was run on 1-4 individuals with a combined mass of 50-180μg. Samples were reacted with orthophosphoric acid (100%) and analysed, in comparison with a reference gas, using a dual inlet Thermo MAT 253 mass spectrometer connected to a Kiel device. Radiocarbon dates were obtained on monospecific samples of planktonic foraminifera, Globigerinoides ruber (Brazil Margin) or Globigerina bulloides (Iberian Margin), and samples of mixed benthic foraminifera (excluding agglutinated species) picked from the >150μm size-fraction. Samples were graphitized in the Godwin Radiocarbon Laboratory at the University of Cambridge, using a standard hydrogen/iron catalyst reduction method. AMS-14C dates were subsequently measured at the 14Chrono Centre, Queens University Belfast. All dates are reported as 'conventional radiocarbon ages', without additional 'corrections' applied. Reservoir ages and radiocarbon ventilation ages are derived based on the sediment core chronologies, and reported as offsets between contemporary marine- and atmospheric radiocarbon ages (based on the 'Intcal13' atmospheric radiocarbon calibration curve).
Related to:
Skinner, Luke C; Freeman, Emma; Hodell, David A; Waelbroeck, Claire; Vázquez Riveiros, Natalia; Scrivner, Adam E (2020): Atlantic Ocean ventilation changes across the last deglaciation and their carbon cycle implications. Paleoceanography and Paleoclimatology, https://doi.org/10.1029/2020PA004074
Further details:
Coverage:
Median Latitude: 17.377851 * Median Longitude: -22.826836 * South-bound Latitude: -4.300000 * West-bound Longitude: -37.140000 * North-bound Latitude: 37.836000 * East-bound Longitude: -9.510833
Date/Time Start: 1999-09-14T00:00:00 * Date/Time End: 1999-09-14T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
4 datasets
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Datasets listed in this bundled publication
- Skinner, LC; Freeman, E; Hodell, DA et al. (2020): 14C Ages of Atlantic Ocean sediment cores. https://doi.org/10.1594/PANGAEA.925633
- Skinner, LC; Freeman, E; Hodell, DA et al. (2020): Age determination of Atlantic Ocean sediment cores. https://doi.org/10.1594/PANGAEA.925631
- Skinner, LC; Freeman, E; Hodell, DA et al. (2020): Age model of Atlantic Ocean sediment cores. https://doi.org/10.1594/PANGAEA.925636
- Skinner, LC; Freeman, E; Hodell, DA et al. (2020): Stable carbon isotope ratios of Cibicidoides wuellerstorfi of Atlantic Ocean sediment cores. https://doi.org/10.1594/PANGAEA.925634