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Filters: Tags: San Juan County, Colorado (X) > Date Range: {"choice":"year"} (X)

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Cunningham Gulch, from the camp of the miners of the Mountaineer and North Star lodes, on the south side of the gulch, 1,000 feet above the valley. At the left is King Solomon Mountain, and on the right Green and Galena Mountains, with Rocky Gulch between, up which is the route of the Bakers Park and Del Norte wagon road. San Juan County, Colorado. 1875.
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Wolframite (Magabasite). Collected by A. E. Foote from Adams Mine, San Juan County, Colorado. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 11-2009, MnWO_4. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Album caption: San Juan Co, Colo. Index card: Avalanche tracks on snow-covered mountains, viewed from Highway 550 near Silverton. San Juan Mountains. San Juan County, Colorado. February 1973.
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Wall of Castle Wash. Kayenta and Navajo formations. San Juan County, Utah. 1925. Published as plate 13-B in U.S. Geological Survey Professional Paper 188. 1938.
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Album caption: San Juan Co, Colo. Index Card: Avalanche chute, South Fork Mineral Creek. San Juan Mountains. San Juan County, Colorado. June 1, 1972.
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Scarp of Hermosa formation east of Engineer Mountain, illustrates the manner in which massive limestone and sandstone alternate with soft shale, looking south. Pass of Coalbank hill on the right. Mountains near Silverton in the distance. San Juan County, Colorado. 1909. Figure 2 in U.S. Geological Survey. Folio 171. 1909.
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Red Mountain landslide district, Silverton quadrangle, typical landslide blocks and ridges with intervening trenches, at divide between Red Mountain and Mineral Creeks. San Juan County, Colorado. 9:45 a.m. September 5, 1900. Plate 8-A in U.S. Geological Survey. Professional paper 67. 1909.
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Mount Garfield, from the northern end of Elk Park, Animas Canyon; near center of picture the vertical strata of Uncompahgre quartzites are shown. The well defined ravine below and to the left of Mount Garfield marks the fault which bounds the quartzites at the river. The peak of Mount Garfield itself consists of northward-dipping quartzites, which have thrust over the Archean schists. San Juan County, Colorado. August 11, 1901. Figure 6 in U.S. Geological Survey. Folio 131. 1905.
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Inclusions of amphibole-schist in Twilight gneissose granite, illustrates manner in which the gneissose banding follows the irregular outlines of included schist fragments. San Juan County, Colorado. August 11, 1901. Figure 11 in U.S. Geological Survey. Folio 131. 1905.
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Album caption: San Juan Co, Colo. Index card: Rock glacier, near North Twilight Peak. Snowdon Peak quadrangle. San Juan Mountains. San Juan County, Colorado. July 9, 1971.
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Arrow and Vestal Peaks, seen across Elk Creek from divide near head of Whitehead Creek. In Vestal Peak, to the left, are shown upturned strata of Uncompahgre quartzite, characteristic of the whole Grenadier Range. San Juan County, Colorado. August 14, 1901. Figure 8 in U.S. Geological Survey. Folio 131. 1905.
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The Vallecito and the Guardian, from a point not far above mouth of Johnson Creek. Stream gravels and terraces in the foreground, the cliffs to the left are Eolus granite, all else being within the area of Uncompahgre quartzites and slates. San Juan Colorado. July 26, 1901. Figure 7 in U.S. Geological Survey. Folio 131. 1905.
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Album caption: San Juan Co, Colo. Index card: The central Trinity Peak, elevation 13,805'. Moraine at left, rock glacier and snowfield also visible. This is one of the few permanent snow bodies in the San Juan Mountains. San Juan Mountains. San Juan County, Colorado. July 24, 1971.
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Shown in photo are Edna Hope, Gregory, A.A. Baker, E.T. McKnight standing on Goodridge bridge. San Juan County, Utah. 1927.
    map background search result map search result map Rock glacier, near North Twilight Peak. San Juan Mountains. San Juan County, Colorado. 1971. San Juan Mountains. San Juan County, Colorado. 1971. Avalanche chute on South Fork Mineral Creek. San Juan Mountains, Colorado. 1972. Avalanche chutes, viewed from Highway 550 near Silverton. San Juan Mountains, Colorado. 1973. Wall of Castle Wash. San Juan County, Utah. 1925. Cunningham Gulch, from the camp of the miners of the Mountaineer and North Star lodes. San Juan County, Colorado. 1875. Rock glacier, near North Twilight Peak. San Juan Mountains. San Juan County, Colorado. 1971. San Juan Mountains. San Juan County, Colorado. 1971. Avalanche chute on South Fork Mineral Creek. San Juan Mountains, Colorado. 1972. Avalanche chutes, viewed from Highway 550 near Silverton. San Juan Mountains, Colorado. 1973. Cunningham Gulch, from the camp of the miners of the Mountaineer and North Star lodes. San Juan County, Colorado. 1875. Wall of Castle Wash. San Juan County, Utah. 1925.