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alluvial fan

alluvial fan Fan-shaped area of alluvium (water-borne sediment) deposited by a river when the stream reaches a plain on lower ground, and the water velocity is abruptly reduced. Organic matter is also transported, making the soil highly fertile. Valuable minerals such as cassiterite (tin ore, SnO2), diamonds, gold, and platinum are often found in alluvial fans.

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"alluvial fan." World Encyclopedia. . Encyclopedia.com. 23 Apr. 2017 <http://www.encyclopedia.com>.

"alluvial fan." World Encyclopedia. . Encyclopedia.com. (April 23, 2017). http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/alluvial-fan

"alluvial fan." World Encyclopedia. . Retrieved April 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/alluvial-fan

alluvial fan

alluvial fan(alluvial cone) A mass of sediment deposited at some point along a stream course at which there is a sharp decrease in gradient (e.g. between a mountain range and a plain). Essentially, a fan is the terrestrial equivalent of a river-delta formation.

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"alluvial fan." A Dictionary of Ecology. . Encyclopedia.com. 23 Apr. 2017 <http://www.encyclopedia.com>.

"alluvial fan." A Dictionary of Ecology. . Encyclopedia.com. (April 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/alluvial-fan-0

"alluvial fan." A Dictionary of Ecology. . Retrieved April 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/alluvial-fan-0

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 gradient, e.g. between a mountain range and a plain. Essentially, a fan is the terrestrial equivalent of a river-delta formation.

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"alluvial fan." A Dictionary of Earth Sciences. . Encyclopedia.com. 23 Apr. 2017 <http://www.encyclopedia.com>.

"alluvial fan." A Dictionary of Earth Sciences. . Encyclopedia.com. (April 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/alluvial-fan

"alluvial fan." A Dictionary of Earth Sciences. . Retrieved April 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/alluvial-fan

alluvial fan

alluvial fan A mass of sediment deposited at some point at which there is a sharp decrease in gradient, e.g. between a mountain range and a plain. Essentially, a fan is the land-bound equivalent of a river-delta formation.

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"alluvial fan." A Dictionary of Plant Sciences. . Encyclopedia.com. 23 Apr. 2017 <http://www.encyclopedia.com>.

"alluvial fan." A Dictionary of Plant Sciences. . Encyclopedia.com. (April 23, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/alluvial-fan-1

"alluvial fan." A Dictionary of Plant Sciences. . Retrieved April 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/alluvial-fan-1