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Granitic rock and metamorphic enclave, Colorado
Granitic rock and large raft of metamorphic rock, Longs Peak, Rocky Mountain National Park, Colorado(140809-67)
Download ImageVegetation colonizing fractured granite, CO
Vegetation colonizing fractured granite, Colorado. (140809-115)
Download ImageGlacial tarn in granite bedrock, Colorado
Glacial tarn in cirque eroded into Precambrian granite bedrock, Colorado. (140809-45)
Download ImageGlacial headwall, Colorado
The Spearhead, a glacially eroded headwall in Rocky Mountain National Park, Colorado. (140809-1)
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Water issuing from alpine spring, Oregon
Groundwater issuing from alpine spring, Oregon. (140802-61)
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Stratified pyroclastic rocks, Oregon
Stratified pyroclastic (explosive volcanic) rocks, Oregon. (140802-39)
Download ImageEroded extinct volcano: Broken Top, Oregon.
Eroded extinct shield volcano: Broken Top, Oregon Cascades. (140802-3)
Download ImageNonconformity, Montana
A type of unconformity called a Nonconformity with Cambrian sandstone overlying Precambrian schist, Montana. Montana. (140724-10)
Download ImageStratified pyroclastic rocks, Oregon
Stratified pyroclastic (explosive volcanic) rocks, Oregon. (140802-36)
Download ImageDeposits of Ice-Age floods, Oregon
Gravel and boulder deposits of Ice-Age floods, Oregon. (140730-34)
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Waterfalls and glacial upland, Montana
Glacially eroded Proterozoic Belt Supergroup, Glacier National Park, Montana. (140720-38)
Download ImageNonconformity, Montana
Geologist inspecting the Great unconformity –in this location a nonconformity with Cambrian Flathead Sandstone on top Precambrian metamorphic basement rock. (140724-14)
Download ImageDecollement (detachment) in thrust fault, Montana.
Decollement (detachment) in thrust fault, Montana. (140722-57)
Download ImageGlacial Lake, Glacier National Park, Montana
St. Mary’s Lake, a glacial lake in Glacier National Park, Montana. (140720-33)
Download ImageSt. Mary River and Montana Front Range
St. Mary River, Glacier National Park, Montana. (140718-6)
Download ImageAlpine Lake, Glacier NP, Montana.
Alpine Lake (Ptarmigan Lake), Glacier NP, Montana.(140719-80)
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