U-series ages and Neodymium isotopic compositions of late Quaternary populations of Desmophyllum dianthus from Orphan Knoll and Flemish Cap, south-eastern Labrador Sea

• Main Authors: Hillaire-Marcel, Claude, Maccali, Jenny, Menabreaz, Lucie, Ghaleb, Bassam, Poirier, André, Edinger, Evan
• Format: Dataset
• Language: English
• Published: PANGAEA 2022
• Subjects: Age; 14C AMS; dated; dated standard error; Thorium corrected; Aragonite; Bølling-Allerød; Calendar age; standard error; calibrated; Comment; deep corals; Desmophyllum dianthus; Dredge; DRG; ELEVATION; Event label; Holocene; HU2010-029-R1335-04; HU2010-029-R1335-13; HU2010-029-R1336-26; HU2010-029-R1336-27; HU2010-029-R1343-02; HU2010-029-R1343-09; HU2010-029-R1343-12; HU2010-029-R1343-16; HU2010-029-R1343-17; HU2010-029-R1343-21; HU2010-029-R1343-22; HU78-020-001; HUD2010-029; HUD2010-029-R1335-13; HUD2010-029-R1335-4; HUD2010-029-R1336-26; HUD2010-029-R1336-27; HUD2010-029-R1343-12; HUD2010-029-R1343-16; HUD2010-029-R1343-17; HUD2010-029-R1343-2; HUD2010-029-R1343-21; HUD2010-029-R1343-22; HUD2010-029-R1343-9; HUD78-020; HUD78-020-001; Hudson; Laboratory code/label; Greenland; Orphan Knoll; Labrador Sea; North Atlantic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.949618; https://doi.org/10.1594/PANGAEA.949618

The data sets include U-series and Neodymium isotope measurements in modern (n = 6) and fossil (n = 24) deep-coral (Desmophyllum dianthus) assemblages raised from the Orphan Knoll and Flemish cap area, southeastern Labrador Sea, during the CCGS Hudson-2010-029 cruise using the tethered Canadian ROPOS ROV, complemented with a single colony from a rock dredge recovery during the CSS Hudson 78-020 expedition. Fossil specimens age clusters are : the mid to late Holocene, the Bølling-Allerød (the single colony), MIS 5c, MIS 7a. Details about the U-series measurements can be found in Maccali et al. (2020). Nd-isotope measurements were reported during the 2015 Goldschmidt Conference by Ménabréaz et al. ( 2015). Low eNd-values point to intervals with a strong imprint of detrital particulate fluxes from the Greenland and Canadian Precambrian basements on the intermediate water mass of the Labrador Sea (~ 1600-2200 m). The more radiogenic end-member (eNd ~ -13.5) corresponds to the modern-like signature of the North-Atlantic Deep Sea Water.