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Monocline, SE Utah
Aerial view of the San Rafael Swell, a monocline on the Colorado Plateau in SE Utah. (101028-60)
Download ImagePahoehoe lava and cinder cones, Idaho
Pahoehoe lava and cinder cones in Craters of the Moon National Monument, Idaho (100628-63)
Download ImageCinders and cinder cones, Idaho
Cinders and cinder cones in Craters of the Moon National Monument, Idaho. (100628-61)
Download ImageBasin and Range
Aerial view of the Basin and Range Province, Nevada (SrF-01. 4512-36)
Download ImageNonconformity: sandstone on granite, CO
Nonconformity between Cambrian Sawatch Sandstone and underlying Precambrian Pikes Peak Granite, Manitou Springs, Colorado (150323-22)
Download ImageGrand Mesa and Grand Valley, Colorado
View of Grand Mesa, Colorado from Mt. Garfield. The upper most rock is Miocene basalt over Eocene and Cretaceous sandstone and shale (180831-51)
Download ImageMiocene basalt capping Grand Mesa, Colorado
Miocene basalt capping Grand Mesa, Colorado. Beneath the basalt lies a sequence of Eocene Green River Fm above Cretaceous Mesa Verde Group and Mancos Shale. (180901-50)
Download ImageGrand Mesa, Colorado (Pan)
Panoramic view of Grand Mesa, Colorado. It consists of Miocene basalt overlying Eocene and Cretaceous sandstone and shale (180831-93)
Download ImagePikes Peak and hogback of Lyons Sandstone, Colorado
Pikes Peak and hogback of Lyons Sandstone, near the Garden of the Gods City Park, Colorado (150323-43)
Download ImageHogback, Garden of the Gods S. Park, Colorado
Hogbacks of Permian Lyons Sandstone, Garden of the Gods City Park, Colorado (150323-37)
Download ImageHogbacks, Roxborough State Park, Colorado
Hogbacks of the Pennsylvanian Fountain Formation (red) and Permian Lyons Sandstone (white) and intervening strike valley, Roxborough State Park, Colorado (131025-52)
Download ImageHogbacks, Roxborough State Park, COlorado (vertical)
Hogbacks of the Pennsylvanian Fountain Formation (red) and Permian Lyons Sandstone (white) and intervening strike valley, Roxborough State Park, Colorado (131025-47)
Download ImageRipplemarks 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)
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