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Pegmatite dike cutting gneiss.
pegmatite dike cutting folded Archean gneiss, Teton Range, Wyoming. (5D-6195)
Download ImagePegmatite sill intruding gneiss. (vertical)
Pegmatite sill in Precambrian gneiss, northern Colorado. (5D-5910)
Download ImageSackung in creeping soil, Colorado.
Sackung and graben in creeping soil in alpine country of Rocky Mountain National Park, Colorado. The sackung is the uphill-facing scarp on the left. (5D-6023)
Download ImageSolution pit in granite. (vertical)
Solution pit and grus and soil development in granite, Colorado (5D-5861)
Download ImageCirque and glacial valley, Colorado (vertical)
View down cirque and glacial, U-shaped valley, Colorado. The bedrock in the fore- and middle ground consists entirely of granite. Rocky Mountain National Park. (5D-5669)
Download ImageGranite glaciated peaks: Longs, Pagoda, Meeker. Rocky Mountain
These glaciated peaks in Colorado consist almost entirely of granite –except fo the large enclave of metamorphic gneiss that can be seen as a near-horizontal band in the upper third (left) of the photo. Rocky Mountain National Park. (5D-5664)
Download ImageGranite and high peaks (Pan)
Longs Peak and Pagoda Mountain, in Rocky Mountain National Park, Colorado, consist mostly of glacially-sculpted Precambrian granite. (5D-5742)
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Weathering and erosion of granite (vertical)
Weathering and erosion of fractured granite, Colorado. (5D-5580)
Download ImageUnconformity
Nonconformity (type of unconformity) between Cambrian sandstone above and Precambrian gneiss below. Mojave Desert, California. (5D-5415)
Download ImageBonneville Salt flats, Utah
Bonneville salt flats, Great Salt Lake Desert, Utah (5D-4749)
Download ImageCirque, tarn, headwall, Colorado.
Cirque, tarn, headwall; Chasm Lake and Longs Peak, Colorado. (5D-5448)
Download ImageGreat Unconformity, Colorado.
Great Unconformity, a nonconformity between Cambrian Sandstone and Precambrian basement rock along the Eagle River, Colorado. Note old mine workings. (5D-5049)
Download ImageKeystone Thrust fault, Nevada
Aerial view of Keystone Thrust fault in the Spring Mountains of Nevada. Fault places gray Cambrian Bonanza King LImestone of white and red Jurassic Aztec Sandstone. Valley of Fire State Park. (5D-5180).
Download ImageTalus cone, Colorado
Talus cone, the landform produced from falling and rolling rock, Colorado (5D-5194)
Download ImageNonconformity, Colorado
Nonconformity (a type of unconformity) between Cambrian sandstone and underlying Precambrian metamorphic rock, Glenwood Canyon, Colorado. This unconformity is frequently referred to as the “Great Unconformity”. 5D-5008)
Download ImageTailings ponds, Climax, Colorado
Extensive tailings ponds at the Climax Molybdenum mine, Colorado. (5D-5108)
Download ImageAplite dikes in granite, Utah (vertical)
Aplite dikes in granite, Wasatch Mountains, Utah. (5D-4816)
Download ImageMt. Garfield, Colorado
Mt. Garfield and Cretaceous rock of the Book Cliffs, Colorado. (5D-4943)
Download ImageSalt precipitation, Utah
Precipitation of salt along edge of lake in Great Salt Lake Desert, Utah (5D-4751)
Download ImageSalt precipitation, Utah
Precipitation of salt along edge of lake in Great Salt Lake Desert, Utah (5D-4788)
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