Hanging valley: Difference between revisions
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[[Image:Closeup of Bridalveil Fall seen from Tunnel View in Yosemite NP.JPG|right|thumb|Bridal Veil Falls in [[Yosemite National Park]] flowing from a hanging valley.]]A '''hanging valley''' is a [[tributary]] valley with the floor at a higher relief than the main channel into which it flows. They are most commonly associated with [[U-shaped valley]]s when a tributary [[glacier]] flows into a glacier of larger volume. The main glacier erodes a deep U-shaped valley with nearly vertical sides while the tributary glacier, with a smaller volume of ice, makes a shallower U-shaped valley. Since the surfaces of the glaciers were originally at the same elevation, the shallower valley appears to be ‘hanging’ above the main valley. Often, waterfalls form at or near the outlet of the upper valley. |
[[Image:Closeup of Bridalveil Fall seen from Tunnel View in Yosemite NP.JPG|right|thumb|Bridal Veil Falls in [[Yosemite National Park]] flowing from a hanging valley.]]A '''hanging valley''' is a [[tributary]] valley with the floor at a higher relief than the main channel into which it flows. They are most commonly associated with [[U-shaped valley]]s when a tributary [[glacier]] flows into a glacier of larger volume. The main glacier erodes a deep U-shaped valley with nearly vertical sides while the tributary glacier, with a smaller volume of ice, makes a shallower U-shaped valley. Since the surfaces of the glaciers were originally at the same elevation, the shallower valley appears to be ‘hanging’ above the main valley. Often, waterfalls form at or near the outlet of the upper valley. |
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Revision as of 22:03, 6 February 2007
A hanging valley is a tributary valley with the floor at a higher relief than the main channel into which it flows. They are most commonly associated with U-shaped valleys when a tributary glacier flows into a glacier of larger volume. The main glacier erodes a deep U-shaped valley with nearly vertical sides while the tributary glacier, with a smaller volume of ice, makes a shallower U-shaped valley. Since the surfaces of the glaciers were originally at the same elevation, the shallower valley appears to be ‘hanging’ above the main valley. Often, waterfalls form at or near the outlet of the upper valley.