https://www.usgs.gov/publications/rhyolitic-calderas-yukon-tanana-terrane-east-central-alaska-volcanic-remnants-a-mid
Rhyolitic calderas of the Yukon-Tanana Terrane, east central Alaska: volcanic remnants of a...
Four large but poorly exposed rhyolitic calderas are present in the Yukon-Tanana terrane (YTT) in east central Alaska. At least two are mid-Cretaceous in age...
yukon tanana terrane