Migmatite, showing typical wavy foliation, Pacific Gulch. Dark layers are biotite and oligoclase-andesin;, light layers are mainly quartz, microcline, and oligoclase- andesine. Summit County, Colorado. Circa 1963.
Dates
Date Taken
1963
Summary
Migmatite, showing typical wavy foliation, Pacific Gulch. Dark layers are biotite and oligoclase-andesin;, light layers are mainly quartz, microcline, and oligoclase- andesine. Summit County, Colorado. Circa 1963. Published in US Geological Survey Professional Paper 652, figure 6. 1971.
Summary
Migmatite, showing typical wavy foliation, Pacific Gulch. Dark layers are biotite and oligoclase-andesin;, light layers are mainly quartz, microcline, and oligoclase- andesine. Summit County, Colorado. Circa 1963. Published in US Geological Survey Professional Paper 652, figure 6. 1971.
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