Vertical δ18O profiles from Cape Hatteras and Blake Outer Ridge during the Mid-Holocene (2-6 ka BP) and LGM (19-23 ka BP) ...

• Main Authors: Wharton, Jack, Renoult, Martin, Gebbie, Geoffrey, Keigwin, Lloyd D, Marchitto, Thomas M, Maslin, Mark, Oppo, Delia W, Thornalley, David J R
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: AMOC; Blake Outer Ridge; Foraminiferal geochemistry; Horizontal circulation; Last Glacial Maximum; Middle Holocene; North Atlantic; North Atlantic Deep Water; Oxygen and carbon stable isotopes; Paleoceanography; Subtropical gyre; Event label; Latitude of event; Longitude of event; Transect; Timeslice; ELEVATION; Foraminifera, benthic δ18O; Foraminifera, benthic δ18O, standard error; Sortable-silt mean; Sortable-silt mean, standard error; Reference/source; Composite Core; Jumbo Piston Core; MultiCorer; Piston corer; Gravity corer; Giant gravity corer; Box corer; Isotope ratio mass spectrometry; Leg172; AR36; KNR140; KNR178; KNR197-10; Joides Resolution; Neil Armstrong; Knorr; A Trans-Atlantic assessment and deep-water ecosystem-based spatial management plan for Europe ATLAS; Beyond the instrumental record: Reconstructing Atlantic overturning over the past 7000 yrs ReconAMOC; Explaining and predicting the ocean conveyor EPOC; Integrated Assessment of Atlantic Marine Ecosystems in Space and Time iAtlantic; Bor; Sira
• Online Access: https://dx.doi.org/10.1594/pangaea.967463; https://doi.pangaea.de/10.1594/PANGAEA.967463

This dataset consists of glacial and Mid-Holocene multi-species benthic δ18O mean data from cores that form depth transects at Cape Hatteras and Blake Outer Ridge. The mean δ18O for each core was derived by averaging multiple monospecific measurements from different depth intervals corresponding to the MH or LGM. The standard error is σ/√n; where σ is the multi-species replicate error at either CH or BOR across both time periods, and n is the number of species analysed at each core. Stable isotope measurements were performed using a VG Isogas SIRA mass spectrometer with Multicarb preparation system (>80 μg) and a Thermo MAT253 isotope ratio mass spectrometer with Kiel IV carbonate preparation device (<80 μg) at the Godwin Laboratory, University of Cambridge. δ18O and δ13C are reported relative to the Vienna Peedee belemnite (VPDB) standard, and for both instruments analytical precision is estimated to be better than ±0.07 ‰ and ±0.04 ‰ respectively. Where foraminiferal abundances were low and/or bulk ... : Isotopic ratios were measured either with a VG Isogas SIRA mass spectrometer with Multicarb preparation system (>80 μg) or with a Thermo MAT253 isotope ratio mass spectrometer with Kiel IV carbonate preparation device (<80 μg). ...