Definitions for alluvial fan
al·lu·vial fan

Princeton's WordNetRate this definition:0.0 / 0 votes

1. alluvial fan, alluvial conenoun

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

WiktionaryRate this definition:0.0 / 0 votes

1. alluvial fannoun

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

WikipediaRate this definition:0.0 / 0 votes

1. Alluvial fan

   An alluvial fan is an accumulation of sediments that fans outwards from a concentrated source of sediments, such as a narrow canyon emerging from an escarpment. They are characteristic of mountainous terrain in arid to semiarid climates, but are also found in more humid environments subject to intense rainfall and in areas of modern glaciation. They range in area from less than 1 square kilometer (0.4 sq mi) to almost 20,000 square kilometers (7,700 sq mi). Alluvial fans typically form where flow emerges from a confined channel and is free to spread out and infiltrate the surface. This reduces the carrying capacity of the flow and results in deposition of sediments. The flow can take the form of infrequent debris flows or one or more ephemeral or perennial streams. Alluvial fans are common in the geologic record, such as in the Triassic basins of eastern North America and the New Red Sandstone of south Devon. Such fan deposits likely contain the largest accumulations of gravel in the geologic record. Alluvial fans have also been found on Mars and Titan, showing that fluvial processes have occurred on other worlds. Some of the largest alluvial fans are found along the Himalaya mountain front on the Indo-Gangetic plain. A shift of the feeder channel (a nodal avulsion) can lead to catastrophic flooding, as occurred on the Kosi River fan in 2008.

WikidataRate this definition:0.0 / 0 votes

1. 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. A convergence of neighboring alluvial fans into a single apron of deposits against a slope is called a bajada, or compound alluvial fan.

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1. • Geological Phenomenon

How to pronounce alluvial fan?

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Numerology

1. Chaldean Numerology

   The numerical value of alluvial fan in Chaldean Numerology is: 2

2. Pythagorean Numerology

   The numerical value of alluvial fan in Pythagorean Numerology is: 3

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=alluvial fan
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Alluvial_Fan
3. ^ Wikipedia
   https://en.wikipedia.org/wiki/Alluvial_Fan
4. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=alluvial fan