Revised gas age for the Marine Isotope Stage 6 period (190-135 ka) from the EPICA Dome C ice core

DOI

We improved the relative age uncertainties between ice and gas in the EDC core using δ15N-based estimates of firn column thickness. A new chronology was established using new δ15N data during the early MIS 6 in this study and published data from Landais et al. (2013), see doi:10.1594/PANGAEA.929513.Isotopes of molecular nitrogen in air bubbles were measured from EDC at the Laboratoire des Sciences du Climat et de l'Environnement (LSCE), France. The gas was extracted from the ice by a wet extraction technique and the released air was analysed by a dual-inlet mass spectrometer (Delta V Plus; Thermo Scientific) (Bréant et al., 2019). In total, 151 samples from 88 depth intervals (63 duplicates) between the depths of 2124.7 and 1875.0 m below the surface were measured, corresponding to the time interval from 205 to 154 kyr BP.

Identifier
DOI https://doi.org/10.1594/PANGAEA.929698
Related Identifier References https://doi.org/10.5194/cp-16-2203-2020
Related Identifier References https://doi.org/10.1594/PANGAEA.929513
Related Identifier IsDerivedFrom https://doi.org/10.1038/ngeo1985
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.929698
Provenance
Creator Shin, Jinhwa ORCID logo; Nehrbass-Ahles, Christoph ORCID logo; Grilli, Roberto (ORCID: 0000-0001-5636-264X); Beeman, Jai Chowdhry ORCID logo; Parrenin, Frédéric ORCID logo; Teste, Grégory; Landais, Amaëlle ORCID logo; Schmidely, Loïc ORCID logo; Silva, Lucas (ORCID: 0000-0003-3623-213X); Schmitt, Jochen ORCID logo; Bereiter, Bernhard; Stocker, Thomas F ORCID logo; Fischer, Hubertus ORCID logo; Chappellaz, Jérôme A
Publisher PANGAEA
Publication Year 2021
Funding Reference Fifth Framework Programme https://doi.org/10.13039/100011104 Crossref Funder ID EVK2-CT-2000-00077 https://cordis.europa.eu/project/id/EVK2-CT-2000-00077 European Project for Ice Coring in Antarctica; Fourth Framework Programme https://doi.org/10.13039/100011105 Crossref Funder ID ENV4980702 https://cordis.europa.eu/project/id/ENV4980702 European Project for Ice Coring in Antarctica
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 327 data points
Discipline Earth System Research
Spatial Coverage (123.350 LON, -75.100 LAT); Dome C, Antarctica
Temporal Coverage Begin 1993-01-01T00:00:00Z
Temporal Coverage End 2004-12-31T00:00:00Z