Holocene 231Pa/230Th ratios, Uranium isotopes and biogenic Opal concentrations from four North Atlantic sediment cores

DOI

To investigate the variability of the Atlantic Meridional Overturning Circulation (AMOC) during the Holocene in the North Atlantic, we analyzed radioisotopes (230Th, 231Pa, 232Th, 234U, and 238U) in sediment samples from four core sites (ODP 172-1063, ODP 172-1059, ODP 162-983, and GeoB18529-2) with millennial-scale temporal resolution. From these measurements, we calculated 231Pa/230Th ratios. The isotope analyses were conducted using three instruments: a Neptune Plus MC-ICP-MS equipped with a retarding potential quadrupole filter at the Geozentrum Nordbayern, Friedrich–Alexander University, Erlangen; an ELEMENT ICP-MS at the Alfred Wegener Institute (AWI), Bremerhaven; and an iCAP TQe ICP-MS at the Institute of Earth Sciences, Heidelberg University.To assess the influence of biogenic opal (bOpal) concentrations on the 231Pa/230Th ratios, we measured bOpal concentrations from the same samples. These measurements followed an automated protocol for dissolved silica analysis using molybdate-blue spectrophotometry, conducted at Heidelberg University.

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.980737
Related Identifier IsPartOf https://doi.pangaea.de/10.1594/PANGAEA.980736
Related Identifier References https://doi.org/10.1594/PANGAEA.929721
Related Identifier References https://doi.org/10.1029/2019PA003737
Related Identifier References https://doi.org/10.1038/s41597-019-0173-8
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.980737
Provenance
Creator Gerber, Lukas ORCID logo; Lippold, Jörg ORCID logo; Süfke, Finn ORCID logo; Valk, Ole ORCID logo; Testorf, Pierre; Ehnis, Manuel; Tautenhahn, Saskia; Max, Lars ORCID logo; Chiessi, Cristiano Mazur ORCID logo; Regelous, Marcel ORCID logo; Szidat, Sönke ORCID logo; Friedrich, Oliver ORCID logo; Pöppelmeier, Frerk ORCID logo
Publisher PANGAEA
Publication Year 2025
Funding Reference Coordenação de Aperfeicoamento de Pessoal de Nível Superior https://doi.org/10.13039/501100002322 Crossref Funder ID 312458/2020–7 ; Coordenação de Aperfeicoamento de Pessoal de Nível Superior https://doi.org/10.13039/501100002322 Crossref Funder ID 49558SM ; Deutsche Forschungsgemeinschaft, Bonn https://doi.org/10.13039/501100001659 Crossref Funder ID 277128673 https://gepris.dfg.de/gepris/projekt/277128673?context=projekt&task=showDetail&id=277128673 Quantitative Rekonstruktion der Ozeanzirkulation; European Commission https://doi.org/10.13039/501100000780 Crossref Funder ID 101023443 https://cordis.europa.eu/project/id/101023443 Comprehensive Climate Modeling of the Mid-Pleistocene Transition; Fundação de Amparo à Pesquisa do Estado de São Paulo https://doi.org/10.13039/501100001807 Crossref Funder ID 2018/15123–4 ; Fundação de Amparo à Pesquisa do Estado de São Paulo https://doi.org/10.13039/501100001807 Crossref Funder ID 2019/24349–9
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 4228 data points
Discipline Earth System Research
Spatial Coverage (-75.419W, 31.674S, -23.641E, 60.403N); North Atlantic Ocean; Blake Outer Ridge, North Atlantic Ocean; Blake-Bahama Outer Ridge, North Atlantic Ocean; SE Grand Banks Slope
Temporal Coverage Begin 1995-07-21T11:58:00Z
Temporal Coverage End 2014-06-14T03:32:00Z