what is alluvial fan
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An alluvial fan is a triangle-shaped deposit of gravel, sand, and even smaller pieces of sediment, such as silt. This sediment is called alluvium. Alluvial fans are usually created as flowing water interacts with mountains, hills, or the steep walls of canyons.
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Explanation:
A alluvial fan is an accumulation of sediments shaped liked a section of shallow cone
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