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Landscape of Ptarmigan Cirque
Samples
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Landscape of Ptarmigan Cirque
Ptarmigan Cirque is a west-facing glacial cirque between Mt. Rae and Mt. Arethusa in Kananaskis Country along the border of Alberta and British Columbia. Glacial cirques are formed as snow freezes in areas protected from sun and wind on a mountainside. As the ice forms, it increases the load on the mountainside cracking the bedrock below and allowing for multiple erosional processes to occur, such as frost-wedging, rock-plucking, and abrasion. The load and erosion that are present on three of the four slopes create a convergence zone of ice and debris. As this ice melts, the distinguishable bowl shape seen in image B-1 is left behind. The accumulation of ice causes disintegration of the rocks below, seen as fine sediments in images A and C. Image C-1 shows the geologic features of uplift, tilting, and folding that would have occurred during mountain building. The landscape in image D, facing west out of the bowl shows remnants of glacial erosion by the loose sediments and till that are left scattered throughout the base of the bowl, as well as a stream and vegetation.
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Digitized Date
09/15/2013
Creator
Dolphin, Glenn
Country
Canada
Province
Alberta
Municipality
Kananaskis Improvement District
How can you use these images?
Permitted uses are outlined in License and Usage Rights. Usage Restrictions can only be waived by the copyright holder. Add to cart and make a request if you have any questions.
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License URL
https://creativecommons.org/licenses/by/4.0
Copyright Status
In copyright
Attribution
"Landscape of Ptarmigan Cirque", 2013, (CU1STO6898) by , is used under . Courtesy of Collection, Libraries and Cultural Resources Digital Collections, University of Calgary.
Unique identifier:
CU1STO6898
Type:
Geoscience