Salt glacier: Difference between revisions
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[[Image:SaltGlaciers ZagrosMtns 20010810.jpg|thumb|Salt domes (hills) and salt glaciers (dark areas) in the [[Zagros Mountains]] of southern [[Iran]].]] |
[[Image:SaltGlaciers ZagrosMtns 20010810.jpg|thumb|Salt domes (hills) and salt glaciers (dark areas) in the [[Zagros Mountains]] of southern [[Iran]].]] |
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A '''salt glacier''' is a flow of [[salt]] (typically [[halite]]) that is created when a rising [[diapir]] in a [[salt dome]] breaches the surface, much like [[toothpaste]] from a tube. Gravity causes the salt to flow like glaciers into adjacent valleys. Most of the flow occurs during the winter, when the salt is wet, as the strength of salt is critically dependent on its water content. The resulting tongue-shaped bodies can extend for kilometers, with repeating bow-shaped ridges separated by crevasse-like gullies and with steep sides and fronts. Clays may be brought up with the salt, turning it dark. |
A '''salt glacier''' is a flow of [[salt]] (typically [[halite]]) that is created when a rising [[diapir]] in a [[salt dome]] breaches the surface, much like [[toothpaste]] from a tube. Gravity causes the salt to flow like glaciers into adjacent valleys. Most of the flow occurs during the winter, when the salt is wet, as the strength of salt is critically dependent on its water content. The resulting tongue-shaped bodies can extend for kilometers, with repeating bow-shaped ridges separated by crevasse-like gullies and with steep sides and fronts. Clays may be brought up with the salt, turning it dark. |
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The salt glaciers of Iran |
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| ⚫ | <ref>{{cite web | url=http://earthobservatory.nasa.gov/Newsroom/NewImages/images.php3?img_id=16435 | title=Iran's Salt Glaciers | work=[[NASA Earth Observatory]] | accessdate=2006-04-27}}</ref><ref>Talbot, C.J. and Rogers, E.A. 1980. "Seasonal movements in a salt glacier in Iran". ''Science'', '''208''', 395-397.</ref> are halite while the salt glacier of [[Lüneburg Kalkberg]], Germany is gypsum and other carbonates. |
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==References== |
==References== |
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<references/> |
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* Talbot, C.J. and Rogers, E.A. 1980. Seasonal movements in a salt glacier in Iran. Science, 208, 395-397 |
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* Urai, J.L., Spiers, C.J., Zwart, H.J. & Lister, G.S. 1986. Weakening of rock salt by water during long term creep. Nature, 324, 554-557 |
* Urai, J.L., Spiers, C.J., Zwart, H.J. & Lister, G.S. 1986. Weakening of rock salt by water during long term creep. Nature, 324, 554-557 |
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Revision as of 21:39, 3 April 2010
A salt glacier is a flow of salt (typically halite) that is created when a rising diapir in a salt dome breaches the surface, much like toothpaste from a tube. Gravity causes the salt to flow like glaciers into adjacent valleys. Most of the flow occurs during the winter, when the salt is wet, as the strength of salt is critically dependent on its water content. The resulting tongue-shaped bodies can extend for kilometers, with repeating bow-shaped ridges separated by crevasse-like gullies and with steep sides and fronts. Clays may be brought up with the salt, turning it dark.
The salt glaciers of Iran [1][2] are halite while the salt glacier of Lüneburg Kalkberg, Germany is gypsum and other carbonates.
References
- ^ "Iran's Salt Glaciers". NASA Earth Observatory. Retrieved 2006-04-27.
- ^ Talbot, C.J. and Rogers, E.A. 1980. "Seasonal movements in a salt glacier in Iran". Science, 208, 395-397.
- Urai, J.L., Spiers, C.J., Zwart, H.J. & Lister, G.S. 1986. Weakening of rock salt by water during long term creep. Nature, 324, 554-557
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