Exposure of crumpled schist of the Idaho Springs formation in Virginia Canyon, near Seaton Gulch; the lighter bands are injections of pegmatite. Clear Creek County, Colorado. Circa 1911.
Dates
Date Taken
1911
Summary
Exposure of crumpled schist of the Idaho Springs formation in Virginia Canyon, near Seaton Gulch; the lighter bands are injections of pegmatite. Clear Creek County, Colorado. Circa 1911. Plate 10-A in U.S. Geological Survey. Professional paper 94. 1917.
Summary
Exposure of crumpled schist of the Idaho Springs formation in Virginia Canyon, near Seaton Gulch; the lighter bands are injections of pegmatite. Clear Creek County, Colorado. Circa 1911. Plate 10-A in U.S. Geological Survey. Professional paper 94. 1917.
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