Battle Ax Mountain, Oregon

Battle Ax Mountain (middle ground) is a 1-2 million year old shield volcano. Most of the volcano is made of andesite but some flows are basaltic andesite and dacite. Jefferson is in the distance. The cliff in the foreground is part of Whetstone Mountain and made of tuff. Photo courtesy of the Oregon Department of Geology and Mineral Industries.

Source of Information:

Wood, C.A., and Kienle, J., 1993, Volcanoes of North America: Cambridge University Press, New York, 354 p.

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