Corrigendum to “Statistical Perspective on the Petrological Utility of Polyphase Groundmass Compositions Inferred via Defocused Beam Electron Probe Microanalysis” [Geostandards and Geoanalytical Research (2024)]

Abstract

Due to the incorrect speciation of iron during thermometry modelling, Coulthard et al. (2024) produced an incorrect olivine-liquid equilibrium diagram, which failed to identify multiple potential equilibrium olivine-melt pairs. With the new pairs identified here, the temperatures inferred from olivine-groundmass pairs move closer in temperature space to those inferred from olivine-glass pairs. Additionally, it is recognised that the most significant difference between these thermometry data is due to differences in inferred melt water mass fraction. If a mean value of water is used for all thermometry, the mean temperatures calculated for olivine-glass and olivine-groundmass pairs converge to within 10 °C of one another. This indicates that groundmass compositions inferred via the defocused beam analysis of a polyphase groundmass may reproduce enough information to confidently perform olivine-melt thermometry despite the glass and groundmass data representing significantly different compositions in multivariate space.