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Canyon of North Fork of Gunnison River, near Somerset, looking eastward; showing canyon walls, 2000 feet high, consisting principally of sandstones in upper part of Mesaverde formation. The northward-facing brush covered slopes appear at the right and the rock exposures in the southward-facing slopes at the left. Gunnison County, Colorado. 1907. Plate 7-A in U.S. Geological Survey. Bulletin 510. 1912.
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White Rock Mountain, a portion of the granitic core of the Elk Mountain, lying some 6 or 8 miles east of Gothic Mountain. Gunnison County, Colorado. 1873.
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Gothic Mountain, East River, picturesque mountain form, as well as a most instructive geological picture. The bast of the mountain is Cretaceous; then comes a broad, deep band of eruptive rock, covered with the Cretaceous, which is again surmounted with the volcanic material forming its summit. Elevation 12,498 feet. Gunnison County, Colorado. 1873. (Photo same as no. 403)
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Exposure of rocks north of Mount Gunnison, showing the basal conglomerate of the Wasatch ("Ruby") formation, the unconformity at the base Wasatch, the Ohio Creek conglomerate, the unconformity at its base and the upper or undifferentiated part of the Mesaverde formation. (Scale: the trees are 50 to 75 feet high.) Gunnison County, Colorado. 1907. Plate 6-A in U.S. Geological Survey. Bulletin 510. 1912.
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East River Pass, looking across the head of East River and the pass that reached the head of Rock Creek. Gunnison County, Colorado. 1873.
GIS files for the 1:150,000-scale Geologic Map of Gunnison County included in Colorado Geological Survey RS-37 Geology and Mineral Resources of Gunnison County, Colorado.
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White Rock Mountain in the Elk Mountains, looking west from along spur or sharp dividing crest which separates two large amphitheaters, one on the right debouching into East River on the north, and the other via Teocalli Creek on the south. This mountain is a portion of the main granitic core, extending northward to the Snowmass, Capitol, and Sopris, and is so named from a mass of light-colored rock, disintegrating into sand that breaks out upon its summit. The height of White Rock is 13,847 feet. Gunnison County, Colorado. 1873.
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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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EXPLORATION: U.S. Geological and Geographical Survey of the Territories (Hayden Survey) Sheet number 19. Rock structure along Teocalli Creek, Elk Mountains. Fig. 11. Colorado, 1873.
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The Cliff, a sheet of igneous rock, about 1,000 feet thick intruded into the coal bearing formation in Coal Creek canyon. Coal Creek canyon and Mount Gunnison appear at the left. The outcrops of the coal are covered by the slide shown in the foreground. (Scale: The trees in the face of the cliff are about 50 feet high) Gunnison County, Colorado. 1907. Plate 9-B in U.S. Geological Survey. Bulletin 510. 1912.
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Mount Carbon, a laccolith of porphyry intruded into the coal measures. Porphyry was intruded at about the horizon of coal and displaced some or all of the coal beds. The north slope at the right is probably the original upper surface of the intruded mass. At the extreme right the sedimentary rocks are upturned on the flanks of the laccolith. Gunnison County, Colorado. 1907. Plate 12-A in U.S. Geological Survey. Bulletin 510. 1912.
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Landslide in Coal Creek canyon. Showing the wooded condition of the surface in the coal-bearing zone. The coal beds, which elsewhere are obscured by the dense thickets of trees and brush, are exposed at this slide. (Scale: See the man on horseback at base of slide.) Gunnison County, Colorado. 1907. Plate 10 in U.S. Geological Survey. Bulletin 510. 1912.
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Spires of volcanic rock near Sapinero, much of this country was once covered with volcanic tuff consisting of fragments of lava of all sizes, which is bedded like shale or clay. It is soft and is readily cut by rain and streams into beautiful and fantastic forms. Gunnison County, Colorado. 1907. Plate 70-A in U.S. Geological Survey. Bulletin 707. 1922.
map background search result map search result map White Rock Mountain, a portion of the granitic core of the Elk Mountain. Gunnison County, Colorado. 1873. East River Pass. Gunnison County, Colorado. 1873. Looking south across Rock Creek, toward Snowmass and Capitol Mountains, Elk Mountains. Gunnison County, Colorado. 1873. Treasure Mountain in Elk Mountains, and view down the canyon of Rock Creek. Gunnison County, Colorado. 1873. Cascades on Rock Creek. Gunnison County, Colorado. 1873. Red Rock Falls, Elk Mountains. Gunnison County, Colorado. 1873. Cascades on the Left Fork of Rock Creek, Elk Mountains. Gunnison County, Colorado. 1873. Cascades on the Left Fork of Rock Creek, Elk Mountains. Gunnison County, Colorado. 1873. White Rock Mountain in the Elk Mountains, Gunnison County, Colorado. 1873. Gothic Mountain, East River, Gunnison County, Colorado. 1873. Red Rock Falls, Elk Mountains. Gunnison County, Colorado. 1873. Cascades on the Left Fork of Rock Creek, Elk Mountains. Gunnison County, Colorado. 1873. Cascades on the Left Fork of Rock Creek, Elk Mountains. Gunnison County, Colorado. 1873. White Rock Mountain in the Elk Mountains, Gunnison County, Colorado. 1873. Gothic Mountain, East River, Gunnison County, Colorado. 1873. White Rock Mountain, a portion of the granitic core of the Elk Mountain. Gunnison County, Colorado. 1873. East River Pass. Gunnison County, Colorado. 1873. Looking south across Rock Creek, toward Snowmass and Capitol Mountains, Elk Mountains. Gunnison County, Colorado. 1873. Treasure Mountain in Elk Mountains, and view down the canyon of Rock Creek. Gunnison County, Colorado. 1873. Cascades on Rock Creek. Gunnison County, Colorado. 1873.