Age model analyses and stable oxygen isotope data of benthic foraminifera Uvigerina spp. and Cibicides wellerstorfi from sediments cores GeoB2806-4, GeoB6211-1/2, SHN-T295, South Atlantic

DOI

The global climate is closely linked to heat distribution, and the ocean circulation plays an essential role in this interhemispheric exchange. Palaeoceanographic data allow to contextualize the ongoing and projected changes in Earth's energy budget within a long-term temporal framework providing scenarios of boundary conditions of the ocean-atmosphere system substantially different from those in the present. Although the circulation of the western South Atlantic tightly controls the meridional heat and salt transport, our knowledge about its long-term past changes is still fragmented and sparse. While many studies focused their attention on the last glacial and deglaciation periods, Holocene studies mostly lack of an integrated analysis from the subtropical and midlatitude regions. Here, selected regionally distributed paleoceanographic records along the western South Atlantic between 27° and 39°S are analyzed for AMS 14C and stable oxygen isotope data in order to perform a paleoceanographic and paleoclimatic reconstruction of the region during the Holocene. Bayesian age models were ran on all the analyzed cores. For sediment core GeoB2701-3 we used the ages originally published in Hendry et al. (2012, doi:10.1130/G32779.1); for sediment core GeoB6211-1/2 we used the ages originally published in Chiessi et al. (2008, doi:10.1130/G24979A.1), Razik et al. (2013, doi:10.1016/j.palaeo.2012.12.022) and Chiessi et al. (2014, doi: 10.1016/j.palaeo.2013.12.005); for sediment core GeoB13862-1 we used the ages originally published in Voigt et al. (2013, doi:10.1016/j.margeo.2013.05.002); for sediment core GeoB6308-1/3 we used the ages originally published by Lantzsch et al. (2014, doi:10.1016/j.yqres.2014.01.003) and Voigt et al. (2015, doi:10.1002/2014PA002677); for sediment core GeoB2806-4 we used the ages originally published by García Chapori and Laprida (2021, doi:10.1111/let.12416); and for core SHN-T295 we performed the analyses on the samples obtain during campaign Stable isotopic analyses were performed on benthic foraminifera from four cores. For sediment core GeoB2701-3 we used the data originally published in Pereira et al. (2018, doi:10.1029/2018PA003406); for sediment core GeoB6211-1/2 we performed the analyses on the samples obtain during the campaign M46/2; for sediment core GeoB2806-4 we performed the analyses on the samples obtain during the campaign M29/2; and for core SHN-T295 we performed the analyses on the samples obtain during the campaign "Coring 2002" (RV Puerto Deseado; Argentina).

Identifier
DOI https://doi.org/10.1594/PANGAEA.946054
Related Identifier IsSupplementTo https://doi.org/10.1016/j.jsames.2022.103896
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.946054
Provenance
Creator Lo Prete, Daniel; García Chapori, Natalia Luz; Laprida, Cecilia ORCID logo; Chiessi, Cristiano Mazur ORCID logo; Mayr, Christoph ORCID logo; Violante, Roberto
Publisher PANGAEA
Publication Year 2022
Funding Reference Agencia Nacional de Promoción Científica y Tecnológica https://doi.org/10.13039/501100003074 Crossref Funder ID PICT2017-1458 ; Coordenação de Aperfeicoamento de Pessoal de Nível Superior https://doi.org/10.13039/501100002322 Crossref Funder ID 88881.313535/201901 ; National Council for Scientific and Technological Development https://doi.org/10.13039/501100003593 Crossref Funder ID 312458/2020-7 ; National Scientific and Technical Research Council https://doi.org/10.13039/501100002923 Crossref Funder ID PIP11220150100038CO ; São Paulo Research Foundation https://doi.org/10.13039/501100001807 Crossref Funder ID 2018/15123-4 https://www.fapesp.br/oportunidades/perspectivas_preteritas_sobre_limiares_criticos_do_sistema_climatico:_a_floresta_amazonica_e_a_celula_de_revolvimento_meridional_do_atlantico_(ppteam)/3957/ ; São Paulo Research Foundation https://doi.org/10.13039/501100001807 Crossref Funder ID 2019/24349-9 ; University of Buenos Aires https://doi.org/10.13039/501100005363 Crossref Funder ID 20020190100204BA UBACyT
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 9 datasets
Discipline Earth System Research
Spatial Coverage (-55.015W, -39.302S, -50.243E, -32.505N)
Temporal Coverage Begin 1994-06-19T00:00:00Z
Temporal Coverage End 2009-06-29T04:44:00Z