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. 2018 Sep 3;376(2130):20170072. doi: 10.1098/rsta.2017.0072

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© 2018 The Author(s)

Published by the Royal Society. All rights reserved.

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Figure 5. — Estimation of the potential contribution of regional changes in salinity to B/Ca records. B/Ca anomalies (ΔB/Ca, µmol mol⁻¹) were computed by subtracting a pre-CIE average value from each point in the record (a,b). Paired planktonic foraminiferal Mg/Ca and δ¹⁸O were used to estimate δ¹⁸O_sw changes; regional δ¹⁸O_sw–salinity relationships were used to translate δ¹⁸O_sw to ΔSSS. Plotted here are ΔB/Ca records uncorrected (dashed line) and corrected (bold line) for regional changes in salinity using B/Ca salinity sensitivity of modern O. universa derived in laboratory culture experiments [50]. The shaded region represents the potential contribution of local salinity changes to ΔB/Ca records. Age is denoted in kiloyears relative to the CIE. (Online version in colour.)