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Glacial erosional features, Colorado
Glacial headwall, cirque, and U-shaped Valley, Longs Peak in Rocky Mountain National Park, Colorado. Longs Peak consists primarily of Proterozoic granitic rock. (110715-5)
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Unconformity (Nonconformity), Colorado
Cambrian Sawatch Sandstone overlies Precambrian Pikes Peak Granite near Manitou Springs, Colorado. (110712-3).
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Tilted Pennsylvanian-Permian redbeds
Fountain Formation, alluvial deposits of the early Rocky Mountains, Colorado. (110712-1)
Download ImageInclusions in granitic rock (vertical)
Elongate inclusions of metamorphic wall rock in granitic rock, British Columbia, Canada (110713-3).
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White asbestos, (chrysotile)
White asbestos, (chrysotile, a magnesium silicate mineral). 110608-6.
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ripple marks in sandstone (vertical)
Ripple marks in sandstone of the Proterozoic Grinnell Formation of the Belt Supergroup, Glacier National Park, Montana. (110623-32)
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Spheroidal weathering in granitic rock, Colorado
The Twin Owls, shaped by spheroidal weathering of granitic rock, Colorado. (110710-6)
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White asbestos, (chrysotile)
White asbestos, (chrysotile, a magnesium silicate). 110609-1.
Download ImageWhite asbestos:chrysotile (vertical)
White asbestos, (chrysotile, a magnesium silicate). Crystal is 1 cm across. 110610-6).
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White asbestos: chrysotile (vertical)
White asbestos, (chrysotile, a magnesium silicate). Crystal is 1 cm across. (110610-11)
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