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Glacial valley, Glacier NP, Montana
Glacial valley and paternoster lakes, Glacier National Park, Montana. (30-1032)
Download Imagemudcracks in fine sandstone.
mudcracks in fine sandstone of Proterozoic Belt Supergroup, Montana. (30-10284)
Download Imagemudcracks in fine sandstone. (vertical)
mudcracks in fine sandstone of Proterozoic Belt Supergroup, Montana. (30-10278)
Download Imagemudcracks in fine sandstone.
mudcracks in fine sandstone of Proterozoic Belt Supergroup, Montana. (30-10277)
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Leading edge of Fold-Thrust Belt, Montana
The leading edge of the Fold-Thrust Belt, Montana is marked by a thrust fault at the front of the mountains, adjacent to the Great Plains. Cretaceous sandstone crops out in the foreground; Mississippian Madison Limestone forms the mountains in the background. (30-10162)
Download ImageOscillation ripples in fine sandstone
Oscillation ripples in fine sandstone of Proterozoic Snowslip Formation, Belt Supergroup, Glacier National Park, Montana. (30-1004)
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Grand Canyon, Arizona
Aerial view of flat-lying Paleozoic strata in Grand Canyon National Park, Arizona. Colorado River in lower right. (30-0366)
Download ImageGrand Teton, Wyoming (vertical)
Precambrian granite makes up the summit of the Grand Teton in Grand Teton National Park, Wyoming. (30-0778)
Download ImageGrand Teton, Wyoming (vertical)
Grand Teton and Mt. Owen in Grand Teton National Park, Wyoming. (30-0759)
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Mudcracks on playa, Oregon (vertical)
Mudcracks on Alvord Desert playa –a pluvial lake in SE Oregon. (30-0567)
Download ImageU-shaped, glacial valley, Teton Range, WY
Cascade Canyon, a U-shaped, glacial valley in Grand Teton National Park, Wyoming. (30-0778)
Download ImageMudcracks on playa, Oregon
Mudcracks on Alvord Desert playa –a pluvial lake in SE Oregon. (30-0565)
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Sheeting joints in granite, Colorado.
Exfoliation of granitic dome by sheeting fractures, Rocky Mountain National Park, Colorado (30-0140)
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