Environmental Studies

A Dictionary of Ecology A Dictionary of Earth Sciences Further reading

ice wedge

A Dictionary of Ecology | 2004 | | Copyright

ice wedge A tapering, vertically layered mass of ice, about a metre wide at the top and extending downward for some 3–7 m. It results from contraction cracking of the ground during extreme cold, followed by water penetration from the active layer and subsequent freezing. It is characteristic of uniform sediment, such as river alluvium, under periglacial conditions.

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

MICHAEL ALLABY. "ice wedge." A Dictionary of Ecology. 2004. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "ice wedge." A Dictionary of Ecology. 2004. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O14-icewedge.html

MICHAEL ALLABY. "ice wedge." A Dictionary of Ecology. 2004. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O14-icewedge.html

Learn more about citation styles

ice wedge

A Dictionary of Earth Sciences | 1999 | | Copyright

ice wedge Tapering, vertically layered mass of ice, about a metre wide at the top and extending downward for some 3–7 m. It results from contraction cracking of the ground during extreme cold, followed by water penetration from the active layer and subsequent freezing. It is characteristic of uniform sediment, such as river alluvium, under periglacial conditions.

Cite this article
Pick a style below, and copy the text for your bibliography.

MLA
Chicago
APA

AILSA ALLABY and MICHAEL ALLABY. "ice wedge." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. 1 Jun. 2012 <http://www.encyclopedia.com>.

AILSA ALLABY and MICHAEL ALLABY. "ice wedge." A Dictionary of Earth Sciences. 1999. Encyclopedia.com. (June 1, 2012). http://www.encyclopedia.com/doc/1O13-icewedge.html

AILSA ALLABY and MICHAEL ALLABY. "ice wedge." A Dictionary of Earth Sciences. 1999. Retrieved June 01, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O13-icewedge.html

Learn more about citation styles

Free newspaper and magazine articles

	Cessation of ice-wedge development during the 20th century in spruce forests... Magazine article from: Canadian Journal of Earth Sciences; 11/1/2007
	Ice from ancient warming factors in climate debate.(WORLD) Newspaper article from: The Washington Times (Washington, DC); 10/27/2008
	Not-so-perma frost: warming climate is taking its toll on subterranean ice. Magazine article from: Science News; 3/10/2007