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5332 images found

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Edge of Ash bed in Oligocene-Miocene sandstone, Nebraska

Edge of Ash bed in Oligocene-Miocene sandstone of the Arikaree Group, Scotts Bluff National Monument, Nebraska 220916-112)

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Scotts Bluff and Great Plains, Nebraska

Flat-lying rocks of the Oligocene White River Group and overlying Oligocene-Miocene Arikaree Group form bluffs overlooking the Great Plains, Scotts Bluff National Monument, Nebraska (220916-110)

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Concretions and cross-bedded sandstone, Nebraska

Concretions and cross-bedded sandstone of the Oligocene-Miocene Arikaree Group, Nebraska (220916-109)

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Proterozoic pegmatite in granite, Colorado

Lens of Proterozoic pegmatite in granite, Colorado (220916-103)

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Proterozoic pegmatite in schist, Colorado

Proterozoic pegmatite forming small sills in schist, Colorado (220916-99)

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Oil pump jack on Great Plains, SE Wyoming

Oil pump jack on Great Plains, southeastern Wyoming (220916-95)

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Oil pump jack on Great Plains, SE Wyoming

Oil pump jack on Great Plains, southeastern Wyoming (220916-93)

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White River and Arikaree Groups, Nebraska

Oligocene White River and overlying Oligocene-Miocene Arikaree Group, W Nebraska (220916-90)

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Bluffs of flat-lying Oligocene-Miocene rock, Nebraska

Bluffs of flat-lying Oligocene White River Group and Oligocene-Miocene Arikaree Group of Scotts Bluff National Monument, Nebraska

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White River and overlying Arikaree Groups, Nebraska

Eagle Rock, composed of approx flat-lying Oligocene White River Group and Oligocene-Miocene Arikaree Group of Scotts Bluff National Monument, Nebraska (220916-81)

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Rock fall deposit and cliffs, Nebraska

Rock fall deposit from large failure event on the cliffs above, an important mechanism of cliff retreat, Scotts Bluff National Monument, Nebraska (220916-79)

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Rock fall deposit and cliffs, Nebraska (vertical)

Rock fall deposit from large failure event on the cliffs above, an important mechanism of cliff retreat, Scotts Bluff National Monument, Nebraska (220916-78)

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Ash bed in sandstone, Arikaree Group, Nebraska

Ash bed in Oligocene-Miocene sandstone of the Arikaree Group, Scotts Bluff National Monument, Nebraska 220916-69)

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Bluffs and Great Plains, Nebraska

Flat-lying rocks of the Oligocene White River Group and overlying Oligocene-Miocene Arikaree Group form the South Bluffs section of Scotts Bluff National Monument, Nebraska. The buildings are the monument headquarters, residence area, and visitor center. (220916-57)

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