Ollive, Agathe; Adolphi, Florian; Geibert, Walter; Matthiessen, Jens: Bulk 230Th-excess and U isotopes concentrations in GIK23065-3 core in the Nordic Seas [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.995092 (dataset in review)
Abstract:
Bulk Thorium and Uranium concentrations were measured in 35 sediment samples from the Nordic Seas core GIK23065-3. Samples were fully digested following the method of Geibert et al. (2019) to calculate excess 230Th (230Thxs) in the sediments. After sample full digestion, radionuclide concentrations were determined using an ICP-MS (Thermo Scientific Element2 with Jet interface). 230Thxs in marine sediments provides information on past water column conditions, including salinity-related changes, as demonstrated by Geibert et al. (2021). In this dataset, Thorium and Uranium concentrations are used to derive 230Thxs and enable comparison with reactive 10Be/9Be ratios, a proxy for tracing North Atlantic inflow into the Nordic Seas (Ollive et al., doi:10.1594/PANGAEA.993158). The record covers glacial intervals from Marine Isotope Stages (MIS) 2–4 to MIS 6.
References:
Geibert, Walter; Matthiessen, Jens; Stimac, Ingrid; Wollenburg, Jutta Erika; Stein, Ruediger (2021): Glacial episodes of a freshwater Arctic Ocean covered by a thick ice shelf. Nature, https://doi.org/10.1038/s41586-021-03186-y
Geibert, Walter; Stimac, Ingrid; Rutgers van der Loeff, Michiel M; Kuhn, Gerhard (2019): Dating Deep-Sea Sediments With 230Th Excess Using a Constant Rate of Supply Model. Paleoceanography and Paleoclimatology, 34(12), 1895-1912, https://doi.org/10.1029/2019PA003663
Ollive, Agathe; Loftfield, Julia; Adolphi, Florian; Matthiessen, Jens; Geibert, Walter; Malter, Maylin: Authigenic 10Be/9Be ratios from Arctic marine sediments spanning the last 200 kyr [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993158
Funding:
Helmholtz Association of German Research Centres (HGF), grant/award no. VH-NG-1501: CLOC – Cosmic Links between Ocean sediments and Ice Cores
Coverage:
Latitude: 68.495000 * Longitude: 0.818330
Date/Time Start: 1986-07-09T00:00:00 * Date/Time End: 1986-07-09T00:00:00
Minimum DEPTH, sediment/rock: 0.635 m * Maximum DEPTH, sediment/rock: 5.640 m
Event(s):
GIK23065-3 * Latitude: 68.495000 * Longitude: 0.818330 * Date/Time: 1986-07-09T00:00:00 * Elevation: -2802.0 m * Penetration: 7.85 m * Location: Norwegian Sea * Campaign: M2/2 * Basis: Meteor (1986) * Method/Device: Kasten corer (KAL)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Sample code/label | Sample label | Ollive, Agathe | |||
| 2 | DEPTH, sediment/rock | Depth sed | m | Ollive, Agathe | Geocode | |
| 3 | Uranium-234 | 234U | dpm/g | Ollive, Agathe | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
| 4 | Uranium-234, standard deviation | 234U std dev | ± | Ollive, Agathe | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
| 5 | Uranium-238 | 238U | dpm/g | Ollive, Agathe | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
| 6 | Uranium-238, standard deviation | 238U std dev | ± | Ollive, Agathe | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
| 7 | Thorium-230 | 230Th | dpm/g | Ollive, Agathe | Inductively coupled plasma - mass spectrometry (ICP-MS) | |
| 8 | Thorium-230, standard deviation | 230Th std dev | ± | Ollive, Agathe | Calculated | |
| 9 | Thorium-230 excess | 230Th xs | dpm/g | Ollive, Agathe | Calculated |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
280 data points