Dias, Bruna Borba; Chiessi, Cristiano Mazur; Piotrowski, Alexander M; Campos, Marília C; Jena, Partha S; Ballalai, João M; Nascimento, Rodrigo Azevedo; Santos, Thiago Pereira dos; Venancio, Igor Martins; Mashayek, Ali; Albuquerque, Ana Luiza Spadano (2025): Authigenic neodymium records from sediment core GL1090 for the penultimate glacial termination and Last Interglacial [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.971660
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Published: 2025-02-06 • DOI registered: 2025-02-07
Abstract:
We present authigenic neodymium isotopes (ℇNd) values from a mid-depth core in the western South Atlantic to assess changes in deep ocean circulation during the penultimate glacial termination and the Last Interglacial (LIG). Authigenic ℇNd were analyzed on uncleaned mixed planktonic foraminifera from the intervals of the penultimate glacial termination and the LIG. These data were compared to the authigenic ℇNd dataset from the last glacial termination and the Holocene published by Howe et al. (2018, doi:10.1016/j.epsl.2018.03.006). The samples were dissolved, and rare earth elements (REE) were separated from other elements using Eichrom TRUspec™ resin. Neodymium was then extracted from the other REE using Eichrom Lnspec™ resin. Samples were analyzed using a Neptune Plus multi-collector mass spectrometer (MC-ICP-MS). The reported error corresponds to 2 standard deviations of reproducibility of the bracketing standards.
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Related to:
Dias, Bruna Borba; Chiessi, Cristiano Mazur; Piotrowski, Alexander M; Campos, Marília C; Jena, Partha S; Ballalai, João M; Nascimento, Rodrigo Azevedo; Santos, Thiago Pereira dos; Venancio, Igor Martins; Mashayek, Ali; Albuquerque, Ana Luiza Spadano (2025): Reduced Penetration of Northern‐Sourced Waters Into the South Atlantic During the Last Interglacial Relative to the Holocene. Paleoceanography and Paleoclimatology, 40(2), e2024PA004955, https://doi.org/10.1029/2024PA004955
Funding:
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 8881.712022/2022-1
Coverage:
Latitude: -24.920000 * Longitude: -42.510000
Minimum DEPTH, sediment/rock: 13.52 m * Maximum DEPTH, sediment/rock: 15.00 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Dias, Bruna Borba | Geocode | |
| 2 | AGE | Age | ka BP | Dias, Bruna Borba | Geocode | |
| 3 | ε-Neodymium, authigenic | ε-Nd auth | Dias, Bruna Borba | MC-ICP-MS ThermoFisher Neptune Plus | ||
| 4 | ε-Neodymium, authigenic, standard deviation | ε-Nd auth std dev | ± | Dias, Bruna Borba | MC-ICP-MS ThermoFisher Neptune Plus | 2sd |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
36 data points
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- Dias, BB; Chiessi, CM; Piotrowski, AM et al. (2025): Sortable silt records from sediment core GL1090 for the penultimate and last glacial terminations, Last Interglacial, and Holocene. https://doi.org/10.1594/PANGAEA.971661
- Ballalai, JM; Santos, TP; Lessa, DVO et al. (2018): Thermocline temperature and seawater δ18O reconstruction during Termination II and the Last Interglacial for the core GL-1090, in the western South Atlantic. https://doi.org/10.1594/PANGAEA.896152
- Santos, TP; Lessa, DVO; Venancio, IM et al. (2017): Benthic Cibicides wuellerstorfi δ¹³C of sediment core GL1090 from subtropical western South Atlantic for the last 185 kyr. https://doi.org/10.1594/PANGAEA.871866