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5409 images found

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Lewis Thrust fault zone, Montana (Pan)

Normal faults extend the upper plate of Proterozoic rock of the Lewis Thrust, Glacier National Park, Montana. (090711-49)

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Ancient mudcracks in rock.

Proterozoic mudcracks filled with sand in mudstone of the Proterozoic Belt Supergroup, southern Alberta, Canada. Photos is about 15 cm across. (090710-60).

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Overturned folds, Alberta.

Overturned syncline (above) and anticline (below) on mountainside, Waterton Lakes National Park, Alberta, Canada. (090710-8)

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U-shaped glacial valley and paternoster lakes

Carthew Lakes form a series of paternoster lakes in the upper reaches of a glacial valley in Waterton Lakes National Park, Alberta, Canada. (090710-25)

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Limestone cliffs, southern Alberta.

Paleozoic LImestone cliffs, southern Alberta, Canada. (090709-24)

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Talus Cones (vertical)

Talus cones, built through the accumulation of rock debris, fallen from the cliffs above. Banff National Park, Canada. (ID: 090707-14)

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Braided River and Canadian Rockies

The Kicking Horse River forms a braided river pattern as it flows through the Canadian Rockies in Yoho National Park, Canada. (090707-2)

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Drumlin, southern Alberta (Pan).

Drumlin, a depositional feature of continental ice sheets, southern Alberta, Canada. Ice flowed from left to right. (090709-19pan)

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Drumlin, southern Alberta.

Drumlin, a depositional feature of continental ice sheets, southern Alberta, Canada. Ice flowed from left to right. (090709-13)

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Cleavage and bedding in limestone and shale.

Cleavage and bedding in gently folded limestone and shale, Yoho National Park, British Columbia, Canada. (090706-19)

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Talus Cones

Talus cones, built through the accumulation of rock debris, fallen from the cliffs above. Banff National Park, Canada. (ID: 090707-17)

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Eocene Pillow Basalt, Washington (vertical)

Cliff exposure of Eocene pillow basalt of the accreted Siletzia Terrane (Crescent Formation). the pillow shapes result from the basalt being erupted underwater. Olympic National Park, WA. (090630-87)

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Erosion of a natural bridge

Erosion of a natural bridge in limestone, Yoho National Park, British Columbia, Canada. (090706-49)

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Alkali lake, British Columbia, Canada.

Evaporating alkali lake in the Okanogan of. Note how it leaves behind zones of precipitated minerals. (090704-54)

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Intrusive contact (vertical)

Contact of granitic igneous rock (tonalite) with metamorphic rock (slate). Note the small sills (apophyses) which invade the country rock. (090704-14)

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Folded pegmatite dike in slate.

Folded pegmatite in slate, likely caused by dissolution of the slate. Note the cleavage planes in the slate are parallel to the axial surface of the fold, southern British Columbia, Canada. (090704-2).

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