Tamborrino, Leonardo; Wienberg, Claudia; Frank, Norbert (2022): Uranium-series age, isotope concentrations and ratios from L. pertusa fragments from gravity core sample GeoB20531-1, Sylvester mound, Namibian coral mounds [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.945296
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Abstract:
Uranium-series age, isotope concentrations and ratios from Lophelia pertusa fragments from the gravity core sample GeoB20531-1 collected during the M122 ANNA cruise off Namibia. *Measured 234U/238U activity ratios (δ234Um) are presented as deviation permil (‰) from the equilibrium value. Decay corrected 234U/238U activity ratios (δ234Ui) are calculated from the given ages and with λ234U: 2.8263 x 10-6 yr-1. Agecor Corrected ages, according to Frank et al. (2004) and Wefing et al., (2017). n.d.: not determinable because lower than the analytical blank (<0.003 ng/g). For GeoB20572-4 and 20579-1, two L. pertusa fragments were collected from the bulk sample for dating: ' sample 1; '' sample 2.
Related to:
Tamborrino, Leonardo; Wienberg, Claudia; Titschack, Jürgen; Wintersteller, Paul; Mienis, Furu; Schröder-Ritzrau, Andrea; Freiwald, André; Orejas, Covadonga; Dullo, Wolf-Christian; Haberkern, Julia; Hebbeln, Dierk (2019): Mid-Holocene extinction of cold-water corals on the Namibian shelf steered by the Benguela oxygen minimum zone. Geology, 47(12), 1185-1188, https://doi.org/10.1130/G46672.1
Original version:
Tamborrino, Leonardo; et al. (2019): Supplemental material: Mid-Holocene extinction of cold-water corals on the Namibian shelf steered by the Benguela oxygen minimum zone. Geological Society of America. Journal contribution. figshare, https://doi.org/10.1130/2019401
Further details:
Addamo, Anna Maria; Vertino, Agostina; Stolarski, J; García-Jiménez, Ricardo; Taviani, Marco; Machordom, Annie (2016): Merging scleractinian genera: the overwhelming genetic similarity between solitary Desmophyllum and colonial Lophelia. BMC Evolutionary Biology, 16(1), https://doi.org/10.1186/s12862-016-0654-8
Frank, Norbert; Paterne, Martine; Ayliffe, L K; van Weering, Tjeerd C E; Henriet, Jean-Pierre; Blamart, Dominique (2004): Eastern North Atlantic deep-sea corals: tracing upper intermediate water d14C during the Holocene. Earth and Planetary Science Letters, 219(3-4), 297-309, https://doi.org/10.1016/S0012-821X(03)00721-0
Wefing, Anne-Marie; Arps, Jennifer; Blaser, Patrick; Wienberg, Claudia; Hebbeln, Dierk; Frank, Norbert (2017): High precision U-series dating of scleractinian cold-water corals using an automated chromatographic U and Th extraction. Chemical Geology, 475, 140-148, https://doi.org/10.1016/j.chemgeo.2017.10.036
Project(s):
Coverage:
Latitude: -20.732000 * Longitude: 12.815000
Date/Time Start: 2016-01-04T11:22:00 * Date/Time End: 2016-01-04T11:22:00
Minimum DEPTH, sediment/rock: 0.060 m * Maximum DEPTH, sediment/rock: 6.875 m
Event(s):
GeoB20531-1 (M122_026-1) * Latitude: -20.732000 * Longitude: 12.815000 * Date/Time: 2016-01-04T11:22:00 * Elevation: -232.0 m * Recovery: 1021 cm * Campaign: M122 * Basis: Meteor (1986) * Method/Device: Gravity corer (GC) * Comment: coral-bearing on-mound core: 0-800cm: corals, below shell hash/sediment
Comment:
* Measured 234U/238U activity ratios (δ234Um) are presented as deviation permil (‰) from the equilibrium value. Decay corrected 234U/238U activity ratios (δ234Ui) are calculated from the given ages and with λ234U: 2.8263 x 10-6 yr-1.
** AR: Aggradation rate. AR is negligible within the uncertainties for all data except for the values at 75 cm and 589 cm core depth.
Agecor Corrected ages, according to Frank et al. (2004) and Wefing et al., (2017). Ka BP refers to 1950.
n.d.: not determinable because lower than the analytical blank (<0.003 ng/g).
Coral species: Lophelia pertusa is synonym of the recently introduced species name Desmophyllum pertusum
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Tamborrino, Leonardo | Geocode | |
| 2 | Laboratory code/label | Lab label | Tamborrino, Leonardo | |||
| 3 | Species | Species | Tamborrino, Leonardo | Coral species | ||
| 4 | Thorium-232 | 232Th | µg/kg | Tamborrino, Leonardo | given in ppb | |
| 5 | Thorium-232, standard deviation | 232Th std dev | ± | Tamborrino, Leonardo | abs. | |
| 6 | δ234 Uranium | δ234U | ‰ | Tamborrino, Leonardo | δ234Um* | |
| 7 | δ234 Uranium, standard deviation | δ234U std dev | ± | Tamborrino, Leonardo | abs. | |
| 8 | δ234 Uranium | δ234U | ‰ | Tamborrino, Leonardo | δ234Ui* | |
| 9 | δ234 Uranium, standard deviation | δ234U std dev | ± | Tamborrino, Leonardo | abs. | |
| 10 | Age, dated | Age dated | ka | Tamborrino, Leonardo | ||
| 11 | Age, dated standard deviation | Age dated std dev | ± | Tamborrino, Leonardo | abs. | |
| 12 | Age, dated | Age dated | ka | Tamborrino, Leonardo | Corrected | |
| 13 | Age, dated standard deviation | Age dated std dev | ± | Tamborrino, Leonardo | Corrected | abs. |
| 14 | Aggradation rate | Agg rate | cm/ka | Tamborrino, Leonardo | AR** |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
217 data points