Saved in:
| Main Authors: | , , , , , , , , , , , , , |
|---|---|
| Format: | Dataset Open Access |
| Language: | en |
| Published: |
PANGAEA
2026
|
| Subjects: | |
| Online Access: | https://doi.org/10.1594/PANGAEA.989599 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1867170142101700608 |
|---|---|
| author | de Carvalho Campos, Marília Nascimento, Rodrigo Azevedo Pinho, Tainã Marcos Lima Kraft, Laura Crivellari, Stefano Radionovskaya, Svetlana Skinner, Luke C Dias, Bruna Borba Portilho-Ramos, Rodrigo Costa Hartmann, Gelvam André Baker, Paul A Cleverson, Silva G Sawakuchi, André Oliveira Chiessi, Cristiano Mazur |
| author_facet | de Carvalho Campos, Marília Nascimento, Rodrigo Azevedo Pinho, Tainã Marcos Lima Kraft, Laura Crivellari, Stefano Radionovskaya, Svetlana Skinner, Luke C Dias, Bruna Borba Portilho-Ramos, Rodrigo Costa Hartmann, Gelvam André Baker, Paul A Cleverson, Silva G Sawakuchi, André Oliveira Chiessi, Cristiano Mazur |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | We apply a multi-proxy approach to marine sediment core CDH-89 (western equatorial Atlantic, WEA) to investigate ITCZ variability during the penultimate deglaciation. Planktonic foraminiferal assemblages were used to calculate the RN/Gg ratio, defined as %Neogloboquadrina / (%Neogloboquadrina + %Globigerina glutinata), providing insights into upper-ocean structure. We further reconstructed surface hydrography using a suite of oxygen-isotope–based proxies, including Neogloboquadrina dutertrei δ¹⁸O, Globigerinoides ruber (white, sensu stricto) δ¹⁸O, and the interspecies gradient Δδ¹⁸O (N. dutertrei – G. ruber). In addition, we estimated seawater isotopic composition (δ¹⁸O_SW) for both species (N. dutertrei δ¹⁸O_SW and G. ruber δ¹⁸O_SW), as well as the interspecies difference Δδ¹⁸O_SW (N. dutertrei – G. ruber), to infer past salinity variations. Sea-surface temperature was reconstructed using N. dutertrei Mg/Ca-derived calcification temperatures, and we calculated the interspecies temperature gradient ΔTemperature (N. dutertrei – G. ruber) to provide additional constraints on upper-ocean thermal structure. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_989599 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Planktonic foraminiferal geochemistry and assemblage data from sediment core CDH-89 (western equatorial Atlantic) during the penultimate deglaciation de Carvalho Campos, Marília Nascimento, Rodrigo Azevedo Pinho, Tainã Marcos Lima Kraft, Laura Crivellari, Stefano Radionovskaya, Svetlana Skinner, Luke C Dias, Bruna Borba Portilho-Ramos, Rodrigo Costa Hartmann, Gelvam André Baker, Paul A Cleverson, Silva G Sawakuchi, André Oliveira Chiessi, Cristiano Mazur AGE; AWI_INSPIRES; Calculated, see Comment; CDH-89; Core; CORE; DEPTH, sediment/rock; Difference; Equatorial Atlantic; Foraminifera; Globigerinoides ruber white sensu stricto, δ18O; Inductively coupled plasma-optical emission spectrometry (ICP-OES), Agilent, 5100; International Science Program for Integrative Research in Earth Systems; Isotope Ratio mass spectrometer, Thermo Fisher Scientific, ThermoScientific, MAT 253; ITCZ; Neogloboquadrina dutertrei, Magnesium/Calcium ratio; Neogloboquadrina dutertrei, δ18O; Ratio; Relative abundance (counted and calculated of >125 µm fraction); Stratification; Temperature, water; δ18O, seawater, reconstructed We apply a multi-proxy approach to marine sediment core CDH-89 (western equatorial Atlantic, WEA) to investigate ITCZ variability during the penultimate deglaciation. Planktonic foraminiferal assemblages were used to calculate the RN/Gg ratio, defined as %Neogloboquadrina / (%Neogloboquadrina + %Globigerina glutinata), providing insights into upper-ocean structure. We further reconstructed surface hydrography using a suite of oxygen-isotope–based proxies, including Neogloboquadrina dutertrei δ¹⁸O, Globigerinoides ruber (white, sensu stricto) δ¹⁸O, and the interspecies gradient Δδ¹⁸O (N. dutertrei – G. ruber). In addition, we estimated seawater isotopic composition (δ¹⁸O_SW) for both species (N. dutertrei δ¹⁸O_SW and G. ruber δ¹⁸O_SW), as well as the interspecies difference Δδ¹⁸O_SW (N. dutertrei – G. ruber), to infer past salinity variations. Sea-surface temperature was reconstructed using N. dutertrei Mg/Ca-derived calcification temperatures, and we calculated the interspecies temperature gradient ΔTemperature (N. dutertrei – G. ruber) to provide additional constraints on upper-ocean thermal structure. |
| title | Planktonic foraminiferal geochemistry and assemblage data from sediment core CDH-89 (western equatorial Atlantic) during the penultimate deglaciation |
| topic | AGE; AWI_INSPIRES; Calculated, see Comment; CDH-89; Core; CORE; DEPTH, sediment/rock; Difference; Equatorial Atlantic; Foraminifera; Globigerinoides ruber white sensu stricto, δ18O; Inductively coupled plasma-optical emission spectrometry (ICP-OES), Agilent, 5100; International Science Program for Integrative Research in Earth Systems; Isotope Ratio mass spectrometer, Thermo Fisher Scientific, ThermoScientific, MAT 253; ITCZ; Neogloboquadrina dutertrei, Magnesium/Calcium ratio; Neogloboquadrina dutertrei, δ18O; Ratio; Relative abundance (counted and calculated of >125 µm fraction); Stratification; Temperature, water; δ18O, seawater, reconstructed |
| url | https://doi.org/10.1594/PANGAEA.989599 |