Extended Data Fig. 1: Glass composition time series.
From: Shifting melt composition linked to volcanic tremor at Cumbre Vieja volcano
(a) TiO2, (b) Al2O3, (c), MgO, (d) Na2O, (e) K2O, (f) P2O5, (g) S and (h) Cl concentrations as a function of time. Bulk rock data are from Day et al.28 and lava matrix data are from Ubide et al.42. Note the strong decoupling of glass and bulk rock data for some elements (for example, Ti, Mg, Na), particularly in the first week and last two weeks of the eruption. Vertical grey error bars show one standard deviation based on 3–13 analyses on at least two ash clasts per sample, whereas horizontal error bars indicate the ash sampling time span. Error bars are not shown when smaller than symbol size. Black error bars for lava matrix data are one standard deviation from 7–10 analyses42.
