Science / Geology / Alluvium: Unconsolidated terrestrial sediment composed of sorted or unsorted sand, gravel, and clay that has been deposited by water.
Science / Geology / Bolson: In arid regions, a basin filled with alluvium and intermittent playa lakes and having no outlet. MORE
Science / Geology / Regolith: A general term used in reference to unconsolidated rock, alluvium or soil material on top of the bedrock. Regolith may be formed in place or transported in from adjacent lands. MORE
Science / Geology / Flood Plain: An area of alluvium-covered, relatively level land along the banks of a stream that is covered with water when the stream leaves its channel during a time of high flow. MORE