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Thomas, Nicola C; Bradbury, Harold J; Hodell, David A (2022): Reconstructed paleo-oxygen concentration, stable isotope measurements and Gaussian interpolated Δδ13C obtained from the IODP Site 339-U1385 for the past 1.5 Ma, including trace element analyses and Uvigerina spp. abundance over MIS 27-21 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.945872

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Abstract:
The dataset compiles reconstructed changes in deep-water oxygen concentration for the past 1.5 Ma using stable carbon isotope measurements of benthic foraminifer: the epibenthic Cibicidoidies wuellerstorfi and the infaunal Globobulimina affinis, obtained from the International Ocean Discovery Program (IODP) Site 339-U1385 along the Iberian Margin (Northeast Atlantic; 2578 mbsl). The dataset covers the Middle Pleistocene Transition (MPT) and has a mean sampling frequency of ~290 yrs. Changes in North Atlantic deep-water oxygenation for the past 1.5 Ma reveal a significant (>40 µmol/kg) reduction in glacial deep-water oxygen concentration at ~960 ka suggesting increased storage of respired carbon, which is consistent with a drawdown of glacial atmospheric pCO2 values. The dataset includes the following records obtained from the IODP Site 339-U1385: reconstructed oxygen concentration and stable isotope measurements for the past 1.5 Ma; paired sample data focussed on the MIS 27-21 interval including measurements for oxygen concentration, stable isotopes, U/Ca, U/Mn, carbon isotope gradients for both C. wuellerstorfi-G. affinis and C. wuellerstorfi-Uvigerina peregrina, as well as Uvigerina spp. abundance; Ba/Al data; Core-top data for a pilot study transect through Shackleton Site stations; and Gaussian Interpolated data for the carbon isotope gradient between C. wuellerstorfi-G. affinis from this study combined with Iberian Margin Site MD95-2042 data of Hoogakker et al. (2015; doi:10.1038/ngeo2317) for the last 160 ka data.
Keyword(s):
Biological pump; Ice core; Inorganic carbon storage; MPT; Oxygen concentration
Supplement to:
Thomas, Nicola C; Bradbury, Harold J; Hodell, David A (submitted): Changes in North Atlantic deep-water oxygenation across the Middle Pleistocene Transition. Science
Coverage:
Median Latitude: 39.622473 * Median Longitude: -12.478041 * South-bound Latitude: 37.571416 * West-bound Longitude: -24.238110 * North-bound Latitude: 49.877760 * East-bound Longitude: -10.126027
Date/Time Start: 2004-10-30T00:00:00 * Date/Time End: 2011-11-25T00:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
7 datasets

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Datasets listed in this bundled publication

  1. Thomas, NC; Bradbury, HJ; Hodell, DA (2022): Phosphorus/Aluminium ratio of IODP Site 303-1308. https://doi.org/10.1594/PANGAEA.945859
  2. Thomas, NC; Bradbury, HJ; Hodell, DA (2022): Barium/Aluminium ratio of IODP Site 339-U1385. https://doi.org/10.1594/PANGAEA.945860
  3. Thomas, NC; Bradbury, HJ; Hodell, DA (2022): Gaussian interpolated Δδ13C of IODP Site 339-U1385. https://doi.org/10.1594/PANGAEA.945861
  4. Thomas, NC; Bradbury, HJ; Hodell, DA (2022): MIS 27-21 of IODP Site 339-U1385. https://doi.org/10.1594/PANGAEA.945871
  5. Thomas, NC; Bradbury, HJ; Hodell, DA (2022): Determination of stable isotopes of IODP Site 339-U1385. https://doi.org/10.1594/PANGAEA.945863
  6. Thomas, NC; Bradbury, HJ; Hodell, DA (2022): Abundance of Uvigerina spp. from IODP Site 339-U1385. https://doi.org/10.1594/PANGAEA.945864
  7. Thomas, NC; Bradbury, HJ; Hodell, DA (2022): Transect-Core Top data. https://doi.org/10.1594/PANGAEA.945868