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Alluvial fan

Video footage: Alluvial Fan water falls in Rocky Mountain National Park with clouds.
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Definition of the noun alluvial fan

What does alluvial fan mean as a name of something?


  1. a fan-shaped deposit where a fast flowing stream flattens out

Alternative definition of the noun alluvial fan


  1. A cone-shaped heap of alluvium deposited by a river.


Alluvial Fan: in 1982, a high altitude dam burst open and sent much of its lake rushing down the Roaring River. The flood devastated much of the town of Estes Park and left an alluvial fan of soil, sand, and rock at the base of the river. Scientists have been studying succession on the alluvial fan with much interest.


Alluvial fan: An alluvial fan is a fan- or cone-shaped deposit of sediment crossed and built up by streams. If a fan is built up by debris flows it is properly called a debris cone or colluvial fan. These flows come from a single point source at the apex of the fan, and over time move to occupy many positions on the fan surface. Fans are typically found where a canyon draining from mountainous terrain emerges out onto a flatter plain, and especially along fault-bounded mountain fronts.

  • also known as 沖積扇

Printed dictionaries and other books with definitions for Alluvial fan

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Google previewAlluvial Fans in the Death Valley Region, California and Nevada (1965)

by Charles Storrow Denny

An alluvial fan is a depositional segment of a piedmont regardless of whether or not its surface is distinctly fan shaped either in plan or in profile. Pediments and fans are produced during the degradation of a mountain and the transport of the ...

Google previewBlackie’s Dictionary of Geography (2000)

by Blackie

alluvial cone Figure 2 alluvial fan alluvial fan alps alluvial fan A fan-shaped mass of alluvium. 10 Geography: Page 18.

Google previewDictionary of Environmental Engineering and Wastewater Treatment (2016)

by Alireza Bahadori, Scott T. Smith

Alluvial Fan An accretion of sediments in a flow line characterized by ...

Google previewDictionary of Geological Terms (1984)

by Robert Latimer Bates, Julia A. Jackson

Said of a placer formed by the action of running water, as in a stream channel or alluvial fan; also, said of the valuable mineral, e.g. gold or diamond, associated with an alluvial placer. alluvial dam A sedimentary deposit built by an overloaded ...

Google previewA Dictionary of Environment and Conservation (2017)

by Michael Allaby, Chris Park

alluvial cone See alluvial fan. alluvial deposit See alluvium. alluvial fan A mass of sediment that builds up at a point on a stream course where there is a sudden decrease in gradient (for example, in a mountain canyon ).

Google previewEncyclopedia of Deserts (2017)

by Michael A. Mares

ALLUVIAL SOILS Massive alluvial fan descending from arid pre-Andean mountain chains in the Monte Desert of northwestern Argentina. (Photo: M. A. Mares) flows. Almost all alluvial fans found in deserts are of the dry type. Alluvial fan slopes ...

Google previewA Dictionary of Geography (2006)

An alluvial fan is a triangular landform; its shape results from the river swinging back and forth during *aggradation while the apex is fixed at the point where the river emerges from the uplands. Sanderson et al. (2000) GSA Bull.112, 12 suggest ...

Google previewEncyclopedia of Geomorphology (2013)

by Andrew Goudie

Alluvial fan processes and forms, in A.D. Abrahams and A.J. Parsons (eds) Geomorphology of Desert Environments, 354– 402, London: Chapman and Hall. Blissenbach, E. (1954) Geology of alluvial fans ...

Google previewThe Dictionary of Physical Geography (2015)

by David S. G. Thomas

fan delta An alluvial fan extending into a body of water. The subaerial fan results from fluvial and slope processes, and shares many of the ...

Google previewPansegrouw's Crossword Dictionary (1994)

by Louisa Pansegrouw

fan, geest, mud, placer, silt alluvial fan delta alluvial matter geest alluvial river mouth delta ail wet wrong all wool genuine, pure, real all wool and a yard wide constant, genuine, real, sincere, true(-hearted) all Xtians Christendom ally abettor , ...

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Small photo of Alluvial FanSmall photo of Alluvial fan structure alongside road in Death Valley National Park in California.Small photo of high altitude desert with snow covered mountain and an alluvial fan coming off the mountain, into the mineral rich desert floor.Small photo of Alluvial Fan - North-East GreenlandSmall photo of Large field of Desert Gold blooming along the sides of a small wash down an alluvial fan in Death Valley National Park.Small photo of A stream rushes down an Alluvial Fan in the Big Thompson River wash out zone, Rocky Mountain National Park, ColoradoSmall photo of Waterfall at Alluvial fan in Rocky Mountain National Park, Colorado, USA More...

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Alluvial fan Meaning

Video shows what alluvial fan means. A cone-shaped heap of alluvium deposited by a river.. alluvial fan pronunciation. How to pronounce, definition by ...

Quotes about Alluvial fan

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