Flows, Flow Breccias, and Tuff. Thin to thick flows, chiefly of andesite and dacite composition, interlayered with massive breccias, palagonitized airfall beds, and probably lahars of first cycle of cone building. Exposed principally on east flank of volcano. May also include pre-Mount Drum and early Mount Sanford and Mount Wrangell lavas.
Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex
This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137
Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.