Dictionary


allu'vial fan'



Physical Geog.
a fan-shaped alluvial deposit formed by a stream where its velocity is abruptly decreased, as at the mouth of a ravine or at the foot of a mountain. Also called allu'vial cone'.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

alluvialalluvial plain
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