Waters, Laura E.; Andrews, Benjamin J.; Lange, Rebecca A.
(2015)
Three crystal-poor obsidian samples (one dacite, 67 wt % SiO2; two rhyolites, 73 and 75 wt % SiO2), which erupted effusively from monogenetic vents, contain sparse (<2%) plagioclase phenocrysts that span a remarkably ...