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 ...

• Main Authors: Thomas, Nicola C, Bradbury, Harold J, Hodell, David A
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2022
• Subjects: Biological pump; Ice core; Inorganic carbon storage; MPT; Oxygen concentration; ice core; North Atlantic Deep Water; North Atlantic; Northeast Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.945872; https://doi.pangaea.de/10.1594/PANGAEA.945872

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 ...