Data for: Insights into the dynamics of mafic magmatic-hydromagmatic eruptions from volatile degassing behaviour

Supplementary data for "Insights into the dynamics of mafic magmatic-hydromagmatic eruptions from volatile degassing behaviour" (Liu et al.,) Table S1: Major element compositions for Hverfjall tephra, normalised to anhydrous composition. Sample names are as described in Table 1. Table S2: Fourier Transform Infrared Spectroscopy (FTIR) analytical conditions and results. Table S3: Sulfur speciation values determined from the wavelength position of the sulfur Ka peak, following Carroll and Rutherford (1988), and corresponding oxygen fugacity using the calibrations of Jugo et al., (2005, 2010)