An intrusive sheet of igneous rock in Coal Creek canyon. Gunnison County, Colorado. 1907.
Dates
Date Taken
1907
Summary
An intrusive sheet of igneous rock in Coal Creek canyon that has metamorphosed the under lying bed of coal. Gunnison County, Colorado. 1907. Plate 9-A in U.S. Geological Survey. Bulletin 510. 1912.
Summary
An intrusive sheet of igneous rock in Coal Creek canyon that has metamorphosed the under lying bed of coal. Gunnison County, Colorado. 1907. Plate 9-A in U.S. Geological Survey. Bulletin 510. 1912.
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