Precambrian rocks in Black Canyon showing two distinct granitic injections into schists. Black Canyon of the Gunnison National Park, Colorado. 1911.
Dates
Date Taken
1911
Summary
Album caption: Uncompahgre quadrangle, Colorado. Pre-Cambrian rocks in Black Canyon. Showing two distinct granitic injections into schists, representation the older and younger type of granite intrusions. 1/50 sec., 8 stop. 12/14/11. Handwritten notes on album caption: Gunnison Co.
Summary
Album caption: Uncompahgre quadrangle, Colorado. Pre-Cambrian rocks in Black Canyon. Showing two distinct granitic injections into schists, representation the older and younger type of granite intrusions. 1/50 sec., 8 stop. 12/14/11.
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Available in the U.S. Geological Survey Denver Library Photographic Collection, Hunter, J.F. Collection.
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