Grigolato, Júlia; Chiessi, Cristiano Mazur; Bertassoli Junior, Dailson José; de Carvalho Campos, Marília; Shimizu, Marilia Harumi; Magalhães, Renê Hamada; Nace, Trevor; Sawakuchi, André Oliveira; Wahnfried, Ingo Daniel; Neri, Rafael; Cunha, Alan Cavalcanti; Cleverson, Silva G; Baker, Paul A; Govin, Aline; Zabel, Matthias (2025): Radiocarbon ages for marine sediment cores CDH-5 and GGC-4 under the influence of Amazon Basin discharge [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.986813
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Published: 2025-10-29 • DOI registered: 2025-11-27
Abstract:
Here we present radiocarbon from two marine sediment cores (CDH-5 and GGC-4) located in the western equatorial Atlantic, off the coast of the Amazon River mouth, along the path of the North Brazil Current, where Amazon-derived sediments accumulated. Radiocarbon data were obtained using radiocarbon ages of planktonic foraminifera, which were analyzed using accelerator mass spectrometry at the Woods Hole Oceanographic Institution (USA) and the Beta Analytic Laboratory (USA). All work was done at Beta in 4 in-house NEC accelerator mass spectrometers and 4 Thermo IRMSs. The "Conventional Radiocarbon Age" was calculated using the Libby half -life (5568 years), is corrected for total isotopic fraction and was used for calendar calibration where applicable.
Related to:
Grigolato, Júlia; Chiessi, Cristiano Mazur; Bertassoli, Dailson J Jr; Campos, Marília C; Shimizu, Marília H; Magalhães, Renê Hamada; Nace, Trevor; Sawakuchi, André Oliveira; Wahnfried, Ingo Daniel; Neri, Rafael; Cunha, Alan Cavalcanti; Silva, Cleverson Guizan; Baker, Paul A; Govin, Aline; Zabel, Matthias (2025): Past Amazon precipitation under different Atlantic Meridional Overturning Circulation and sea surface temperature scenarios of the last deglaciation. Quaternary Science Reviews, 362, 109425, https://doi.org/10.1016/j.quascirev.2025.109425
Funding:
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 8881.712022/2022-1
Coverage:
Latitude: 4.450000 * Longitude: -48.600000
Date/Time Start: 2010-02-23T00:00:00 * Date/Time End: 2010-02-23T00:00:00
Minimum DEPTH, sediment/rock: 0.06 m * Maximum DEPTH, sediment/rock: 31.91 m
Event(s):
KNR197-4-4GGC * Latitude: 4.450000 * Longitude: -48.600000 * Date/Time: 2010-02-23T00:00:00 * Elevation: -1708.0 m * Location: Amazon Basin * Campaign: KNR197-4 * Basis: Knorr * Method/Device: Gravity corer (GC)
KNR197-4-5CDH * Latitude: 4.450000 * Longitude: -48.600000 * Date/Time: 2010-02-23T00:00:00 * Elevation: -1708.0 m * Location: Amazon Basin * Campaign: KNR197-4 * Basis: Knorr * Method/Device: Piston corer (PC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Grigolato, Júlia | |||
| 2 | Latitude of event | Latitude | Grigolato, Júlia | |||
| 3 | Longitude of event | Longitude | Grigolato, Júlia | |||
| 4 | Date/Time of event | Date/Time | Grigolato, Júlia | |||
| 5 | Core | Core | Grigolato, Júlia | Planktonic foraminifera were analyzed in all samples. Samples marked with asterisk (*) were previously analyzed by Nace (2012). | ||
| 6 | Laboratory code/label | Lab label | Grigolato, Júlia | |||
| 7 | DEPTH, sediment/rock | Depth sed | m | Grigolato, Júlia | Geocode | |
| 8 | Age, dated | Age dated | ka BP | Grigolato, Júlia | see abstract | |
| 9 | Age, dated, error | Age dated e | ± | Grigolato, Júlia | see abstract | |
| 10 | Age, dated | Age dated | ka BP | Grigolato, Júlia | see abstract | |
| 11 | Age, dated, error | Age dated e | ± | Grigolato, Júlia | see abstract |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
144 data points