Radioactive isotope analysis of sediment core PS115/2_2

DOI

Sediment Core PS115/2-2 was recovered from the Amundsen Basin in 3600 m water depth at the eastern flank of the Gakkel Ridge during Polarstern Expedition PS115/2 in 2018 (Stein, 2019). The well-dated core is used to reconstruct in detail the interrelationship between ice-sheet dynamics and organic carbon burial in the central Eurasian Basin during the last 430 kyr, and to correlate marine and terrestrial records of the Eurasian Ice Sheet (EIS) history. Our age model, a fundamental prerequisite for any kind of paleoclimatic reconstruction, is based on magnetostratigraphy, 230Th and 231Pa excess (230Thex and 231Paex) records, and AMS14C ages. The radioisotopes 230Th, 232Th, 231Pa, 234U and 235U (238U) were analysed by means of isotope dilution sector field ICP-mass spectrometry (SF-ICP-MS). As independent age control proxies, extinction ages of 230Thex and 231Paex have been determined (cf., Hillaire-Marcell et al., 2017; Geibert et al., 2021; Song et al., 2023). For details and methods, we refer to Stein et al. (this paper).

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.975840
Related Identifier IsPartOf https://doi.pangaea.de/10.1594/PANGAEA.975790
Related Identifier References https://doi.org/10.1038/s41586-021-03186-y
Related Identifier References https://doi.org/10.1002/2017GC007050
Related Identifier References https://doi.org/10.1016/j.earscirev.2023.104514
Related Identifier References https://doi.org/10.2312/BzPM_0728_2019
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.975840
Provenance
Creator Stein, Ruediger ORCID logo; Frederichs, Thomas ORCID logo; Fahl, Kirsten ORCID logo; Geibert, Walter ORCID logo; Matthiessen, Jens ORCID logo; Niessen, Frank ORCID logo; Vogt, Christoph ORCID logo; Sassenroth, Cynthia; Bazhenova, Evgenia A (ORCID: 0000-0002-8092-702X)
Publisher PANGAEA
Publication Year 2025
Funding Reference German Research Foundation https://doi.org/10.13039/501100001659 Crossref Funder ID STE 412/30 ArcOP-Pilot
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 2193 data points
Discipline History; Humanities
Spatial Coverage (123.480W, 81.244S, 123.484E, 81.244N); Arctic Ocean
Temporal Coverage Begin 2018-09-14T14:49:00Z
Temporal Coverage End 2018-09-14T17:41:00Z