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Headwall in cirque, eroded into granitic rock, Colorado
Headwall in cirque, eroded into granitic rock, Rocky Mountain National Park, Colorado. McHenry’s Peak in background. (140809-11)
Download ImageGlacial cirque, Colorado.
Upper reaches of glacial cirque carved into Precambrian granitic rock, Rocky Mountain National Park, Colorado. (140809-94)
Download ImageBoulder in crack (vertical)
Boulder jammed in crack in granitic rock –a chockstone. (140810-40)
Download ImageGlacial cirque, Colorado.
Upper reaches of glacial cirque, Rocky Mountain National Park, Colorado. (140809-79)
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Upper reaches of glacial valley, Colorado
Upper reaches of glacial valley, Rocky Mountain National Park, Colorado. (140809-110)
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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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