“…This equates to K Ca/Na = ∼2 (e.g., Martel et al, 2006). For melt analogs we used andesitic/dacitic glass and andesitic whole rocks from Ngauruhoe volcano (Hobden, 1997;Lormand et al, 2021;Moebis et al, 2011) and TVZ basalt whole rocks (Gamble et al, 1990). The rock compositions may never have been liquids because they contain abundant antecrysts and xenocrysts (e.g., Cocker et al, 2021;Shane et al, 2019;Section 8.3), but may broadly reflect the compositional diversity of melts generated.…”