Figure 3: Variations in CO2 content as a function of highly incompatible trace elements.
From: Heterogeneity in mantle carbon content from CO2-undersaturated basalts
The CO2 content of the equatorial MAR melt inclusions and matrix glasses is represented as a function of Rb (a), Nb (b) and Ba (c), for, and compared to the Siqueiros melt inclusions and matrix glasses4, the popping rock (outside of the scale, represented by the arrow, CO2 and Nb (ref. 2); Rb and Ba (ref. 31)), and the undersaturated ultradepleted MORB glasses13. The single Siqueiros Rb point represents an average calculated using the Rb and Ba correlation found in Siqueiros melt inclusions48, applied to the maximum Ba measured in Siqueiros melt inclusions4. R2 values refer to the linear regressions (dashed lines) through each set of samples.
