Fig. 3

Lithium abundances in plagioclase crystals and glass from rhyolites considered in this study. Plagioclase crystals from the microcrystalline portion of the deposit have consistently higher Li contents than those from the glassy portions of the same deposit (full data in Supplementary Data 1). Typical uncertainties for Li and Sr are <5% (2σ). Grey’s Landing data are from ref. 22