Sparsely phyric lava from large lava lens in yellow-orange debris flow/lahar in Canyon bottom. Lava unit is jointed and fractured on 5-30 cm scale. Lava lenses 10s or m long scattered throughout unit. Not the same unit as block-and-ashflow flow 2 canyons to west or S01.
Petrology, geochemistry, and age of the Spurr volcanic complex, eastern Aleutian arc