- a fan-shaped deposit of river load where energy has been lost due to the river exiting abruptly from a narrow upland valley to a lowland plain.
Geography Dictionary & Glossary for Students \\ ITS Tutorial School (ITS) - Hong Kong.
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alluvial fan — n. a gradually sloping mass of alluvium that widens out like a fan from the place where a stream begins to slow down … English World dictionary
alluvial 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 alluvial cone. [1870 75] * * * ▪ geological feature unconsolidated… … Universalium
Alluvial fan — An alluvial fan is a fan shaped deposit formed where a fast flowing stream flattens, slows, and spreads typically at the exit of a canyon onto a flatter plain. A convergence of neighboring alluvial fans into a single apron of deposits against a… … Wikipedia
alluvial fan — /əˌluviəl ˈfæn/ (say uh.loohveeuhl fan) noun 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, alluvial cone … Australian English dictionary
alluvial fan — allu′vial fan′ n. geo gel a fan shaped alluvial deposit formed by a stream where its velocity is abruptly decreased, as at the mouth of a ravine … From formal English to slang
alluvial fan — noun a fan shaped deposit where a fast flowing stream flattens out • Syn: ↑alluvial cone • Hypernyms: ↑geological phenomenon … Useful english dictionary
alluvial fan — noun Date: 1873 the alluvial deposit of a stream where it issues from a gorge upon a plain or of a tributary stream at its junction with the main stream … New Collegiate Dictionary
alluvial fan — A fan like deposit of detrital material from steep mountain slopes  … Lexicon of Cave and Karst Terminology
alluvial fan — A low, outspread mass of loose materials and/or rock material, commonly with gentle slopes, shaped like an open fan or a segment of a cone, deposited by a stream (best expressed in semiarid regions) at the place where it issues from a narrow… … Glossary of landform and geologic terms
alluvial fan — noun A cone shaped heap of alluvium deposited by a river … Wiktionary