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The snowy peak of the Cervino. The Alps are a majestic mountain chain that records a history of continental collision and mountain rising. Glaciers and rivers have sculpted many valleys and contributed to the beauty of this natural landscape. Photo taken from Blue Lake, Cervinia-Breuil, Aosta, Italy.
Banff, Lake Louise
Glacial Erratic at Monthey
The house on the rock was built on an isolated massive boulder. The rock is composed of Mt. Blanc granite, which is not found near this region, and obviously had to be transported for many kilometers by action of glaciers.
Rocky Mountain National Park --- The valley has been carved by glaciers between the viewpoint from Trail Ridge Road and the string of peaks in the distance along the Continental Divide. Longs Peak, the only 14,000 foot peak in the park, is the flat-topped mountain in the far distance.
Roche Mountonné at Gorner Glacier
Smooth mounded rocks called roche moutonné (sheep rocks) formed by the action of the Gorner Glacier on the crystalline basement of the Monte Rosa Nappe. Note the striations on the rocks in the lower left corner.
Glaciers can levigate the bedrock over which they flow, smoothing irregularities into a glaciogenic landform called "roche moutonnée." This example from the rock record (Paranà Basin, Brazil) is interpreted as evidence for Permian glacial activity. The bedrock is granitic and it is overlain by patches of diamictite (reddish deposit). Several sedimentary processes can generate bedrock abrasion and a glaciogenic origin for features in the rock record should be presented with caution and based on a combination of multiple lines of evidence.
Glacially U-shaped valley and Longs Peak, Rocky Mountain National Park.
GLACIATION: Moraine Park from Many Parks Curve, Rocky Mountain National Park --- Glaciers moving to the left in the picture along what are now light green meadows pushed boulders to each side into elongated hilly moraines now covered by darker colored trees.
Moraine Park from Many Parks Curve, Rocky Mountain National Park --- Glaciers moving to the left in the picture along what are now light green meadows pushed boulders to each side into elongated hilly moraines now covered by darker colored trees.
Glacial striations, Land o' Lakes view on Grand Mesa --- The horizontal scratch marks in this picture were formed as rocks embedded in the bottom of glaciers moved across this bedrock.