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Bookmark or Share- Alluvial fan | Process, Characteristics & Types | Britannicaalluvial fan, unconsolidated sedimentary deposit that accumulates at the mouth of a mountain canyon because of a diminution or cessation of sediment transport by the issuing stream. The deposits, which are generally fan-shaped in plan view, can develop under a wide range of climatic conditions and have been studied in the Canadian Arctic ...
- 8.1: Alluvial Fans - Geosciences LibreTextsAlluvial fans form in areas with a steep gradient from a drainage catchment to the basin floor whereas wadis in valleys form where the gradients are much lower. Tectonic activity it typically required to maintain steep slopes because they erode to lower slopes through time.
- Geology and geomorphology of alluvial and fluvial fans: current ...Alluvial fan systems have two modes of operation that influence the processes operating on the fan surface and its resultant morphology: aggradation, where sediment is deposited on the fan; and degradation, in which sediment is eroded from the fan surface and out of the fan system.
- Alluvial Fan - National Geographic SocietyAn 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.
- Alluvial fan - WikipediaAn 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.
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