Basaltic andesite
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Basaltic andesite or andesibasalt is a volcanic rock that is intermediate in composition between basalt and andesite. It is a type of low silica andesite that is composed predominantly of augite and p
Basaltic andesite from Parícutin volcano in Mexico
Basaltic andesite in the Cascade Range
Mount Mazama
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Mount Mazama is a complex volcano in the western U.S. state of Oregon, in a segment of the Cascade Volcanic Arc and Cascade Range. The volcano is in Klamath County, in the southern Cascades, 60 miles
Basaltic andesite
…basaltic andesite of the Southern Cordilleran Basaltic Andesite (SCORBA) suite, which may be the most extensive Cenozoic mafic suite in North America. Mount Mazama, a large composite volcano in south-central Oregon, consists of several overlapping basaltic andesite shields. Basaltic andesite is a component of…
Mount Mazama collapsed into a caldera, which filled with water to form Crater Lake
Crater Lake, formed in the caldera from Mazama's collapse
Postcaldera activity has included the production of the Wizard Island cinder cone volcano in Crater Lake
Hairy woodpeckers are one of many common bird species in the Mazama and Crater Lake National Park area