Ba/Ca ratios in benthic foraminifera from recent core tops, supplement to: Lea, David W; Boyle, Edwards A (1989): Barium content of benthic foraminifera controlled by bottom-water composition. Nature, 338, 751-753

David W Lea
The carbon isotope ratio (delta13C) and cadmium content (Cd/Ca) of benthic foraminifera shells have been used to reconstruct deep-water circulation patterns of the glacial oceans. These tracers co-vary with phosphorus in the modern ocean because they are nearly quantitatively regenerated from sinking biological debris in the upper water column. Hence they can be used to reconstruct the distribution of labile nutrients in glacial water masses. Independent constraints on glacial deep-ocean circulation patterns could be provided...
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