Hillaire-Marcel, Claude; Maccali, Jenny; Menabreaz, Lucie; Ghaleb, Bassam; Poirier, André; Edinger, Evan (2022): U-series ages and Neodymium isotopic compositions of late Quaternary populations of Desmophyllum dianthus from Orphan Knoll and Flemish Cap, south-eastern Labrador Sea [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.949618
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
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.
Keyword(s):
Further details:
Maccali, Jenny; Hillaire-Marcel, Claude; Menabreaz, Lucie; Ghaleb, Bassam; Blénet, Aurélien; Edinger, Evan; Hélie, Jean-François; Preda, Michel (2020): Late Quaternary sporadic development of Desmophyllum dianthus deep-coral populations in the southern Labrador Sea with specific attention to their 14C- and 230Th-dating. Marine Chemistry, 224, 103807, https://doi.org/10.1016/j.marchem.2020.103807
Menabreaz, Lucie; Maccali, Jenny; Blénet, Aurélien; Ghaleb, Bassam; Poirier, André; Edinger, Evan; Hillaire-Marcel, Claude (2015): Neodymium Isotopic Composition of Deep-Sea Corals from the Labrador Sea: Implications for NW Atlantic Deepwater Circulation during the Holocene, Bølling-Allerød, MIS 5c and 7a. Goldschmidt Abstracts, 2101
Ruffman, A (2014): Comment on 'Bioerosion and micritization in the deep sea coral Desmophyllum cristagalli ' by C.M. Boerboom, J.E. Smith, and M.J. Risk. Historical Biology, 26(5), 690-690, https://doi.org/10.1080/08912963.2013.835807
Funding:
Natural Sciences and Engineering Research Council (NSERC), grant/award no. 372557-09: Geology, biogeography and genetic connectivity of deep-sea corals in the Orphan Knoll, Orphan Basin, and Flemish Pass areas
Natural Sciences and Engineering Research Council (NSERC), grant/award no. RGPIN-2018-05031: Merging the Arctic paleoceanography into the Earth's global climate/ocean history
Coverage:
Median Latitude: 49.056833 * Median Longitude: -45.683167 * South-bound Latitude: 46.334000 * West-bound Longitude: -46.194000 * North-bound Latitude: 50.555000 * East-bound Longitude: -44.549000
Date/Time Start: 1978-07-11T07:09:00 * Date/Time End: 1978-07-11T07:09:00
Minimum ELEVATION: -2216 m a.s.l. * Maximum ELEVATION: -1610 m a.s.l.
Event(s):
HU78-020-001 (HUD78-020-001) * Latitude: 50.550000 * Longitude: -46.193000 * Date/Time: 1978-07-11T07:09:00 * Elevation: -1628.0 m * Campaign: HUD78-020 * Basis: Hudson * Method/Device: Dredge (DRG)
HU2010-029-R1335-04 (HUD2010-029-R1335-4) * Latitude: 46.419000 * Longitude: -44.818000 * Elevation: -1808.0 m * Campaign: HUD2010-029 * Basis: Hudson * Method/Device: Remote operated platform for oceanography (ROPOS)
HU2010-029-R1335-13 (HUD2010-029-R1335-13) * Latitude: 46.427000 * Longitude: -44.826000 * Elevation: -1610.0 m * Campaign: HUD2010-029 * Basis: Hudson * Method/Device: Remote operated platform for oceanography (ROPOS)
Parameter(s):
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
788 data points