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| 1. |
What is alluvial fans? |
| Answer» 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. Streams carrying alluvium can be trickles of rainwater, a fast-moving creek, a powerful river, or even runoff from agriculture or industry. As a stream flows down a hill, it picks up sand and other particles—alluvium. ..............................For more information visit https://www.nationalgeographic.org/encyclopedia/alluvial-fan/ | |