Meaning of ALLUVIAL FAN

Pronunciation:			u'looveeul fan
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WordNet Dictionary
	Definition:		[n]  a fan-shaped deposit where a fast flowing stream flattens out
	Synonyms:		alluvial cone
	See Also:		geological phenomenon
Glossary
	Definition:		a cone-shaped deposit of sediments generally formed where a mountain stream discharges onto a level surface. Alluvial fan deposits are among the most common surficial sediments in mountainous terrain.