Figure 5. Trace metal analysis of sediment core PS1506-1, supplement to: Rickaby, Rosalind E M; Elderfield, Henry; Roberts, Natalie L; Hillenbrand, Claus-Dieter; Mackensen, Andreas (2010): Evidence for elevated alkalinity in the glacial Southern Ocean. Paleoceanography, 25(1), PA1209

Rosalind E M Rickaby, Henry Elderfield, Natalie L Roberts, Claus-Dieter Hillenbrand & Andreas Mackensen
An increase in whole ocean alkalinity during glacial periods could account, in part, for the drawdown of atmospheric CO2 into the ocean. Such an increase was inevitable due to the near elimination of shelf area for the burial of coral reef alkalinity. We present evidence, based on down-core measurements of benthic foraminiferal B/Ca and Mg/Ca from a core in the Weddell Sea, that the deep ocean carbonate ion concentration, [CO3 2-], was elevated by ~25...
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