Foraminiferal and bulk sediment geochemistry, faunal indexes, and quartz luminescence data from core CDH-89 (western equatorial Atlantic) for the penultimate deglaciation

• Main Authors: de Carvalho Campos, Marília, Chiessi, Cristiano Mazur, Nascimento, Rodrigo Azevedo, Kraft, Laura, Radionovskaya, Svetlana, Skinner, Luke C, Dias, Bruna Borba, Pinho, Tainã Marcos Lima, Kochhann, Marcus, Crivellari, Stefano, Mineli, Thays D, Mendes, Vinícius Ribau, Baker, Paul A, Cleverson, Silva G, Sawakuchi, André Oliveira
• Format: Other/Unknown Material
• Language: English
• Published: PANGAEA
• Subjects: bottom ventilation; Bulk Sediment; CDH-89; Core; Foraminifera; northeastern Brazil; penultimate deglaciation; precipitation; Sea surface temperature; western equatorial Atlantic; Planktonic foraminifera
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.967528

We apply a multi-proxy approach to marine sediment core CDH-89 to assess paleoclimate changes in Northeastern Brazil (NEB) and in the western equatorial Atlantic (WEA) during the penultimate deglaciation. WEA bottom water ventilation was reconstructed through two independent proxies: bulk sediment manganese (Mn) content and benthic foraminifera Cibicidoides wuellerstorfi stable carbon isotopic composition. We derived WEA sea surface temperature based on planktonic foraminifera Globigerinoides ruber (white) sensu stricto Mg/Ca. Finally, we reconstructed NEB hydroclimate using two further independent proxies: ln(Ti/Ca) in bulk sediment and quartz luminescence sensitivity calculated through the intensities of the first second of the optically stimulated luminescence (OSL) decay curve and of the 110°C thermoluminescence (TL) peak. Additionally, we applied surface primary productivity and fragmentation indexes in planktonic foraminifera assemblage.