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Ripplemarks in sandstone, Colorado (vertical)
Ripplemarks in Cretaceous Dakota Formation, Roxborough State Park, Colorado (131025-39)
Download ImagePennsylvanian Fountain Formation, Colorado
Hogback of the Pennsylvanian Fountain Formation, Roxborough State Park, Colorado (131025-17)
Download ImageDipping red beds, Roxborough State Park, CO
Dipping red beds, forming flatirons of the Pennsylvanian Fountain Formation, Roxborough State Park, Colorado (131025-9)
Download ImageBedding surface, Roxborough State Park, CO
Bedding surface of the Pennsylvanian Fountain Formation, Roxborough State Park, Colorado (131025-2)
Download ImageDipping red beds, Roxborough State Park, CO
Dipping red beds of the Pennsylvanian Fountain Formation, Roxborough State Park, Colorado (131024-41)
Download ImageChalk Cliffs and Mt. Princeton Hot Springs, Colorado
Aerial view of Chalk Cliffs and Mt. Princeton Hot Springs, Colorado, view northward. The Chalk Cliffs consist of granitic rock that is beached white by chemical alteration to Laumontite, a zeolite mineral. The frontal fault of the Collegiate Range, which lies at the break in slope near the right side of the photo. (190925-102)
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Granite cliff, Longs Peak, CO (square)
Cliff of Proterozoic Granite forming a glacial headwall, Longs Peak, Rocky Mountain National Park, Colorado. Talus field, developed from frost-wedging, in foreground (4935-41)
Download ImageGranite cliff, Longs Peak, CO (vertical)
Cliff of Proterozoic Granite, a glacial headwall. Longs Peak, Rocky Mountain National Park, Colorado (4935-39)
Download ImageGranite cliff, Longs Peak, CO (vertical)
Cliff of Proterozoic Granite, a glacial headwall, Longs Peak, Rocky Mountain National Park, Colorado (4935-38)
Download ImagePatterned Ground, Rocky Mtn NP, Colorado
Patterned Ground, a periglacial feature along Trail Ridge Road, Rocky Mtn NP, Colorado (08-6009)
Download ImageLongs Peak, Colorado and Keyboard of the Winds
Longs Peak, made of Proterozoic granite, and Keyboard of the Winds, the band of older metamorphic rock (gneiss) that runs across the lower third of the photo (08-5666)
Download ImageLong’s Peak, Meeker, Pagoda, Rocky Mtn NP
Proterozoic granite that makes up Long’s Peak, Meeker, Pagoda, Rocky Mtn NP. Notice the rib of metamorphic rock (gneiss) below the summit of Longs Peak. (08-5643)
Download ImageGranite face at Longs Peak, Colorado
Glacial headwall of Proterozoic granite at Longs Peak, Rocky Mountain National Park, Colorado (08-5456)
Download ImageView over tailings from Climax Mine, Colorado
View over tailings from Climax Molybdenum Mine, Colorado (5108)
Download ImageView over tailings from Climax Mine, Colorado
View over tailings from Climax Molybdenum Mine, Colorado (08-5090)
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Cinder cone and vented lava, Oregon
Cinder cone and vent with erupted lava, Lava Butte, Oregon (200313-120)
Download ImageTriangular facets on rangefront (vertical)
Triangular facets on rangefront, Toiyabe Range, Nevada (200312-36)
Download ImageTriangular facets on rangefront, Nevada
Triangular facets on rangefront, Toiyabe Range, Nevada (200312-29)
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