Pegmatite dike intruding biotite gneiss in Black Canyon. Black Canyon of the Gunnison National Park, Colorado. 1962.
Dates
Date Taken
1962
Summary
Album caption and index card: Pegmatite dike intruding biotite gneiss in Black Canyon, about two-fifths mile downstream from the mouth of Red Rock Canyon. Dike stands out because of superior erosive resistance. Note similar dikes in cliffs above. Red Rock Canyon quadrangle, Montrose County, Colorado. 1962. Note: Published as figure 13 in U.S. Geological Survey. Bulletin 1191. 1965.
Summary
Album caption and index card: Pegmatite dike intruding biotite gneiss in Black Canyon, about two-fifths mile downstream from the mouth of Red Rock Canyon. Dike stands out because of superior erosive resistance. Note similar dikes in cliffs above. Red Rock Canyon quadrangle, Montrose County, Colorado. 1962.
Note: Published as figure 13 in U.S. Geological Survey. Bulletin 1191. 1965.
Available in the U.S. Geological Survey Denver Library Photographic Collection, Hansen, W.R.
Rights
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