Cathedral Rock along the John Day River
Cathedral Rock along the John Day River along Highway 19 is part of a great slump block. The large band running through the cliff consists of tuff (a sliver of the Picture Gorge Ignimbrite)(Fremd and others, 1994).
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The URL is: https://gotbooks.miracosta.edu/gonp/joda/html2/je335.htm
Last modified: 12/20/2010