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Alluvial fan

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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 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 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 , ...

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 previewA Dictionary of Environment and Conservation (2013)

by Chris Park, Michael Allaby

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 ...

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 Earth Science (2002)

by McGraw-Hill Education

An alluvial fan with steep slopes formed of loose material washed down the slopes of mountains by ephemeral streams and deposited as ...

Google previewA Dictionary of Geology and Earth Sciences (2013)

by Michael Allaby

The term is also applied to surface flow, as in *alluvial fans, *bajadas, etc. alluvial cone See ALLUvIAL FAN. alluvial fan (alluvial cone) Mass of sediment deposited at some point along a stream course at which there is a sharp decrease in ...

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 previewA Dictionary of Geography, Second Edition (2007)

by F. J. Monkhouse

g - ~ '2 miles | alluvial fan A fan-shaped mass of sand and gravel, with its apex pointing upstream and with a convex slope, deposited by a stream Where it suddenly leaves a constricted course for a main valley or an ...

Google previewDictionary of Agronomy (1989)

by L. L. Somani

Alluvial Fan. The outspread sloping deposit of detrital material brought down by the action of water from neighbouring elevations upon a plain or open valley bottom and dropped where the stream gradient lessens abruptly, forming roughly a ...

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Small photo of Waterfall at Alluvial fan in Rocky Mountain National Park, Colorado, USASmall photo of Alluvial Fan FallsSmall photo of Alluvial FanSmall photo of Alluvial fan structure alongside road in Death Valley National Park in California.Small photo of Alluvial Fan - North-East GreenlandSmall 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 Large field of Desert Gold blooming along the sides of a small wash down an alluvial fan in Death Valley National Park. 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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