Alpine Glaciers. Ice that flows down mountain valleys (e.g. in the Alps!). Mont Blanc, near Chamonix, France - note the alpine glacier that flows to lower elevations, nearly reaching the main valley in which Chamonix lies. Bergschrund at head of a glacier above Chamonix.
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Ice that flows down mountain valleys
(e.g. in the Alps!)
Rockfalls from the valley walls add debris to the glacier’s surface
Glaciers are capable of carrying debris of almost any size - from the fine particles embedded in the ice in the foreground, to the huge angular boulder in the background
Cirques, Aretes, Horns
The Grand Teton (WY) is a classic horn - note several small cirques that have eroded into the mountain, leaving only a fairly narrow, jagged peak.
The sheer rock face at the back of the cirque is an arete - a narrow ridge between two cirques that have eroded back into the mountain from opposite sides
Note the end moraines, built of debris deposited by the glaciers when they extended a bit further downslope during the “Little Ice Age” (~1550-1850)