North Cascades National Park, Washington. Crinkled phyllite, containing numerous irregular white quartz lenses, exposed south of Berdeen Lake.
Dates
Date Taken
1967
Summary
North Cascades National Park, Washington. Crinkled phyllite, containing numerous irregular white quartz lenses, exposed south of Berdeen Lake. Circa 1967. Figure 8, U.S. Geological Survey Bulletin 1359.
Summary
North Cascades National Park, Washington. Crinkled phyllite, containing numerous irregular white quartz lenses, exposed south of Berdeen Lake. Circa 1967. Figure 8, U.S. Geological Survey Bulletin 1359.
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