Kaguyak ignimbrite. ignimbrite is overlain by 6-10 m of stratified, crossbedded crystal-rich sediments (mostly medium to coarse sand, few clasts >1 cm); top of ignimbrite and all sediments are ferrocreted rusty orange; nothing between ignimbrite+sediments. Many plates of ferrocreted stratified sediments. Exposed thickness 45-40 m.
Kaguyak dome field and its Holocene caldera, Alaska Peninsula