Damm-Johnsen, Thale; Bentley, Michael J; Gröcke, Darren R; Hodgson, Dominic A; McClymont, Erin L: Age-depth model, and carbon and nitrogen stable isotopes of stomach oil deposit WMM3.1 and WMM3.2 over the last 40 000 yrs, Untersee Oasis, Dronning Maud Land [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.980570 (dataset in review)
Abstract:
The age-depth models and carbon (‰ vs. VPDB), nitrogen (‰ vs. AIR) stable isotopes, carbon% and nitrogen % of stomach oil deposits WMM3.1 and WMM3.2 are presented. The deposits were collected from nunataks at Untersee Oasis (71°21.6'S/13°18.96'E), Dronning Maud Land Antarctica, with the GeoMaud Expedition (1995/1996). The study aimed to investigate the geochemical changes occurring within the marginal summer sea-ice zone over the last glacial-interglacial transition. The data presented here are age-depth models generated using 12 14C-samples for WMM3.1, and 8 14C-samples for WMM3.2. All the radiocarbon samples were measures at the CHRONO Lab, Queen Mary University (Belfast, UK). The age-depth model is constructed using the rpackage bacon and reservoir ages spanning 670 yrs (Holocene), 1320 yrs (deglaciation and pre-LGM) and 1760 yrs (LGM) after the recommendations of Heaton et al., (2023, doi:10.1017/RDC.2023.42). The carbon and nitrogen stable isotopes were analysed on the same sample (0.8-1.5mg), using a Costech elemental analyser (ECS 4010) connected to a Thermo Scientific Delta V Advantage isotope ratio mass spectrometer at the Stable Isotope Biochemistry Lab at the Department of Earth Sciences, Durham University (Durham, U.K). In-house and international standards provided an isotopic accuracy of 0.1%.
Funding:
Horizon 2020 (H2020), grant/award no. 864637: ANTarctic Sea Ice Evolution from a novel biological archive (ANTSIE)
Leverhulme Trust, grant/award no. RL-2019-023: Unlocking evidence for Antarctic sea-ice evolution from a novel biological archive, Web: , Award: Philip Leverhulme Research Leadership Award,
Coverage:
Latitude: -71.360000 * Longitude: 13.316000
Date/Time Start: 1996-02-09T00:00:00 * Date/Time End: 1996-02-09T00:00:00
Minimum Elevation: 1460.0 m * Maximum Elevation: 1460.0 m
Event(s):
WMM-3 * Latitude: -71.360000 * Longitude: 13.316000 * Date/Time: 1996-02-09T00:00:00 * Elevation: 1460.0 m * Location: Unterseeoase * Campaign: GeoMaud95/96 * Basis: Sampling on land * Method/Device: Multiple investigations (MULT)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Damm-Johnsen, Thale | |||
| 2 | Latitude of event | Latitude | Damm-Johnsen, Thale | |||
| 3 | Longitude of event | Longitude | Damm-Johnsen, Thale | |||
| 4 | Date/Time of event | Date/Time | Damm-Johnsen, Thale | |||
| 5 | Deposit type | Deposit type | Damm-Johnsen, Thale | |||
| 6 | Run Date/Time | Run Date/Time | Damm-Johnsen, Thale | |||
| 7 | Depth, deposit | Depth deposit | m | Damm-Johnsen, Thale | ||
| 8 | AGE | Age | ka BP | Damm-Johnsen, Thale | Age, 14C calibrated, MARINE20, according to Heaton et al., 2023) | Geocode |
| 9 | Nitrogen | N | % | Damm-Johnsen, Thale | Carbon and hydrogen and nitrogen and sulfur and oxygen (CHNSO) elemental analyzer, Costech Analytical Technologies, ECS 4010 connected to a Isotope ratio mass spectrometer (IRMS), Thermo Scientific, Delta V Advantage | |
| 10 | δ15N | δ15N | ‰ air | Damm-Johnsen, Thale | Carbon and hydrogen and nitrogen and sulfur and oxygen (CHNSO) elemental analyzer, Costech Analytical Technologies, ECS 4010 connected to a Isotope ratio mass spectrometer (IRMS), Thermo Scientific, Delta V Advantage | |
| 11 | Carbon | C | % | Damm-Johnsen, Thale | Carbon and hydrogen and nitrogen and sulfur and oxygen (CHNSO) elemental analyzer, Costech Analytical Technologies, ECS 4010 connected to a Isotope ratio mass spectrometer (IRMS), Thermo Scientific, Delta V Advantage | |
| 12 | δ13C | δ13C | ‰ PDB | Damm-Johnsen, Thale | Carbon and hydrogen and nitrogen and sulfur and oxygen (CHNSO) elemental analyzer, Costech Analytical Technologies, ECS 4010 connected to a Isotope ratio mass spectrometer (IRMS), Thermo Scientific, Delta V Advantage | vs. VPDB |
| 13 | Carbon/Nitrogen, atomic ratio | C/N atom | Damm-Johnsen, Thale | Carbon and hydrogen and nitrogen and sulfur and oxygen (CHNSO) elemental analyzer, Costech Analytical Technologies, ECS 4010 connected to a Isotope ratio mass spectrometer (IRMS), Thermo Scientific, Delta V Advantage |
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:
1080 data points