Chasm Wall at the north end of vernal Mesa. Black Canyon of The Gunnison National Park, Colorado. 1962.
Dates
Date Taken
1962
Summary
Album caption and index card: Chasm Wall, at the north end of vernal Mesa, has a nearly vertical drop of 1,800 feet. Only the upper half of the cliff is shown in this view. Rock is vernal Mesa Quartz Monzonite. Exfoliation along vertical joints contributes to sheerness. The Black Canyon of the Gunnison National Monument. Grizzly Ridge quadrangle, Montrose County, Colorado. 1962. Note: Published as figure 5 in U.S. Geological Survey. Bulletin 1191. 1965.
Summary
Album caption and index card: Chasm Wall, at the north end of vernal Mesa, has a nearly vertical drop of 1,800 feet. Only the upper half of the cliff is shown in this view. Rock is vernal Mesa Quartz Monzonite. Exfoliation along vertical joints contributes to sheerness. The Black Canyon of the Gunnison National Monument. Grizzly Ridge quadrangle, Montrose County, Colorado. 1962.
Note: Published as figure 5 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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