Drainage cut exposes Fisher Tuff. Base is airfall (coarse pumice 65 cm thick), center is thin band of blocky stuff (12 cm thick) and upper 46 cm is likely ash flow, as determined by matrix change. Below deposit is thick clay section. Largest lithic is 121x66 mm. Some sort of mafic nodule in flow, near top of deposit. Black and white speckled, water soaked.
Volcanism on Unimak Island, Alaska, USA: a special focus on Shishaldin and Fisher volcanoes