Element concentrations of bulk sediment from the Southern Cape Basin ...

• Main Authors: Wien, Katharina, Kölling, Martin, Schulz, Horst D
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2005
• Subjects: Gravity corer Kiel type; M23/1; M57/1; Meteor 1986; South Atlantic Ocean
• Online Access: https://dx.doi.org/10.1594/pangaea.711655; https://doi.pangaea.de/10.1594/PANGAEA.711655

High-resolution records of Ca and Sr were obtained from shipboard XRF analyses of bulk sediments in five gravity cores from the southern Cape Basin, South Atlantic Ocean. Sr/Ca ratios display regular glacial/interglacial variations of 14-40% and reveal a close correlation with the SPECMAP record, minimum Sr/Ca ratios appearing during glacial (delta18 O) maxima, distinct increases during periods of deglaciation, and highest ratios in interstadials. Shifts in carbonate-producing phytoplankton and/or zooplankton assemblages over glacial/interglacial cycles are suggested to be the main cause for the observed variations in Sr/Ca patterns. Quick assessment of the relationship between Sr/Ca ratios and the SPECMAP record made it possible to easily transfer an age model to the newly collected cores already during the cruise. ... : Supplement to: Wien, Katharina; Kölling, Martin; Schulz, Horst D (2005): Close correlation between Sr/Ca ratios in bulk sediments from the Southern Cape Basin and the SPECMAP record. Geo-Marine Letters, 25(4), 265-271 ...