Ba/Ca ratios in non-spinose
planktic foraminifera
Ba/Ca ratios in non-spinose
planktic foraminifera
![]() NanoSIMS images of two cultured specimens of N. dutertrei. Mg/Ca data for these shells was published in Fehrenbacher et al., 2017. Ocean grown calcite (marked with an 'o') has elevated Ba compared to the cultured calcite (marked with a 'c'). Ratios are as high as 200 micromol/mol in the cultured calcite and far exceed expected Ba/Ca values for foraminifera. The cultured calcite has low Ba/Ca ratios, as expected given the Ba/Ca ratios of the culture seawater (see Fehrenbacher et al., 2018).
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