Kraft, Laura; Campos, Marília C; Nascimento, Rodrigo Azevedo; Dias, Bruna Borba; Crivellari, Stefano; Kochhann, Marcus; Bertassoli Junior, Dailson José; Venancio, Igor Martins; Santos, Thiago; Baker, Paul A; Silva, Cleverson Guizan; Chiessi, Cristiano Mazur: Geochemical and Sedimentological Data from the AMOC2024-01 Marine Core in the Tropical Atlantic [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.977629 (dataset in review)
Abstract:
We adopted a multiproxy approach to analyze marine sediment cores from the western equatorial Atlantic (WEA) to investigate paleoceanographic and paleoclimatic changes during Heinrich stadial 10. Bottom water ventilation in the WEA is reconstructed using manganese (Mn) content in bulk sediments and stable carbon isotope composition of benthic foraminifera (Cibicidoides wuellerstorfi). Upper stratification was derived from the ratio between two planktonic foraminifera species (Globigerinoides ruber branco and Neogloboquadrina dutertrei). To assess hydroclimatic conditions in Northeastern Brazil (NEB), we used bulk sediment ln(Ti/Ca) geochemistry. To measure the Ca(%), Ti(%), Mn(%) and ln(Ti/Ca) columns, a Malvern Panalytical Epsilon 1 spectrometer, installed at the Laboratory of Paleoceanography and Paleoclimatology (P2L) of the School of Arts, Sciences and Humanities of the University of São Paulo (EACH/USP), was used. And for the columns G. ruber d18O (VPDB), N. dutertrei d18O (VPDB), C. wuellerstorfi d13C (VPDB), C. wuellerstorfi d18O (VPDB) and Δδ18Odut-ruber, a Thermo Fischer Scientific MAT 253 mass spectrometer equipped with an automatic Kiel IV carbonate preparation device, installed at the Laboratory of Paleoceanography and Paleoclimatology (P2L) of the School of Arts, Sciences and Humanities (University of São Paulo, Brazil), was used. The equipment is registered on the laboratory website (http://p2l.each.webhostusp.sti.usp.br/).
Keyword(s):
Related to:
Kraft, Laura; Campos, Marília C; Nascimento, Rodrigo Azevedo; Dias, Bruna Borba; Crivellari, Stefano; Kochhann, Marcus V L; Bertassoli, Dailson J Jr; Venancio, Igor Martins; Santos, Thiago Pereira dos; Baker, Paul A; Silva, Cleverson Guizan; Chiessi, Cristiano Mazur (2025): AMOC-forced southward migration of the ITCZ under a warm climate background. Palaeogeography, Palaeoclimatology, Palaeoecology, 661, 112705, https://doi.org/10.1016/j.palaeo.2024.112705
Funding:
Coordenação de Aperfeicoamento de Pessoal de Nível Superior (CAPES), grant/award no. 8881.712022/2022-1
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro (FAPERJ), grant/award no. 260003/000677/2023
Coverage:
Latitude: -1.030000 * Longitude: -42.740000
Minimum DEPTH, sediment/rock: 18.35 m * Maximum DEPTH, sediment/rock: 20.85 m
Event(s):
Comment:
Support Program for New Teachers, Award: 22.1.09345.01.2
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Kraft, Laura | Geocode | |
| 2 | AGE | Age | ka BP | Kraft, Laura | Geocode | |
| 3 | Calcium | Ca | % | Kraft, Laura | Energy dispersive polarization X-ray fluorescence spectrometer (EDP-XRF), Malvern/Panalytical, Epsilon 1 | |
| 4 | Titanium | Ti | % | Kraft, Laura | Energy dispersive polarization X-ray fluorescence spectrometer (EDP-XRF), Malvern/Panalytical, Epsilon 1 | |
| 5 | Manganese | Mn | % | Kraft, Laura | Energy dispersive polarization X-ray fluorescence spectrometer (EDP-XRF), Malvern/Panalytical, Epsilon 1 | |
| 6 | ln-Titanium/Calcium ratio | ln(Ti/Ca) | Kraft, Laura | Calculated | ||
| 7 | Globigerinoides ruber sensu stricto, δ18O | G. ruber ss δ18O | ‰ PDB | Kraft, Laura | Mass spectrometer MAT-253 ThermoFisher Scientific | vs. VPDB |
| 8 | Neogloboquadrina dutertrei, δ18O | N. dutertrei δ18O | ‰ PDB | Kraft, Laura | Mass spectrometer MAT-253 ThermoFisher Scientific | vs. VPDB |
| 9 | Cibicidoides wuellerstorfi, δ13C | C. wuellerstorfi δ13C | ‰ PDB | Kraft, Laura | Mass spectrometer MAT-253 ThermoFisher Scientific | vs. VPDB |
| 10 | Cibicidoides wuellerstorfi, δ18O | C. wuellerstorfi δ18O | ‰ PDB | Kraft, Laura | Mass spectrometer MAT-253 ThermoFisher Scientific | vs. VPDB |
| 11 | Δδ18O | Δδ18O | ‰ | Kraft, Laura | Calculated | Difference between N. dutertrei-G. ruber |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
623 data points