A refined age model for the U1361A marine sediment core


This data set displays a refined age scale for the U1361A marine sediment core (64.41°S, 143.89°E, 3,454 m water depth), recovered from the continental rise offshore of the Wilkes Subglacial Basin, during the Integrated Ocean Drilling Program (IODP) Expedition (Escutia et al. 2011). This age scale is a refined version of the age scale published in Wilson et al. 2018. Here we use the AICC2012 ice core chronology as a reference curve in order to compare the late Pleistocene sediment core data from U1361A to the TALDICE ice core record. Specifically, we refine the existing U1361A age model through the alignment of barium/aluminium (Ba/Al) ratios from XRF-scanning7 with the EDC δD record on the AICC2012 age scale. We apply a conservative tuning strategy to align the two records, using tie points (derived by visual matching) only at the mid-points of the major glacial terminations I-V. Over the interval of interest for the present study (i.e. ~100-350 ka), the new age model for core U1361 differs by only 0 to 6 ka compared to the previous age model in which the sedimentation rate was assumed to be constant. The Nd and IBRD (ice rafted debris) and 143 Nd/144 Nd records for the U1361A published in Wilson et al. (2018) are drawn on the refined age scale.

IBRD (ire rafted debris) and 143Nd/144Nd records of the U1361A sediment core (Wilson et al. 2018) drawn of the refined age scale tuned on the AICC2012 chronology for EDC (Bazin et al. 2013)

DOI https://doi.org/10.1594/PANGAEA.941906
Related Identifier https://doi.org/10.1038/s41586-018-0501-8
Related Identifier https://doi.org/10.5194/cp-9-1715-2013
Related Identifier https://doi.org/10.1038/s41467-022-32847-3
Related Identifier https://doi.org/10.2204/iodp.proc.318.101.2011
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.941906
Creator Crotti, Ilaria ORCID logo; Quiquet, Aurélien ORCID logo; Landais, Amaëlle ORCID logo; Stenni, Barbara ORCID logo; Wilson, David ORCID logo; Severi, Mirko ORCID logo; Mulvaney, Rob; Wilhelms, Frank ORCID logo; Barbante, Carlo ORCID logo; Frezzotti, Massimo ORCID logo
Publisher PANGAEA
Publication Year 2022
Funding Reference European Research Council https://doi.org/10.13039/501100000781 Crossref Funder ID 817493 https://cordis.europa.eu/project/id/817493 ICORDA - Ice CORe DAting tools revisited to infer the dynamic of glacial – interglacial transitions over the last 1.5 million years; Ministry of Education, Universities and Research https://doi.org/10.13039/501100003407 Crossref Funder ID PNRA18_00098 TALDEEP; Natural Environment Research Council https://doi.org/10.13039/501100000270 Crossref Funder ID NE/T011440/1 ISO-THERM: Isotopic testing of Earth's weathering thermostat; SCOR Corporate Foundation for Science https://doi.org/10.13039/100019631 Crossref Funder ID COASTRISK COASTRISK: Assessing future risks faced by assets in global coastal areas, to determine viable adaptation investments under extreme sea level rise scenarios; Università Italo Francese https://doi.org/10.13039/100015564 Crossref Funder ID C2-1017 https://www.universite-franco-italienne.org/menu-principal/appels-a-projets/programme-vinci/ Vinci Scholarship
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (143.887 LON, -64.410 LAT)