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Featured Geology Terms Entry

Alluvium, uh LOO vee uhm, is clay, silt, sand, gravel, or other material deposited by rivers or streams during periods of flood. Alluvial deposits occur in river valleys and form alluvial fans and deltas. The term alluvium is generally not applied to underwater deposits of rivers. More »

THE TERMS LIBRARY

Alluvial fan

Alluvial uh LOO vee uhl, fan, is a fan-shaped deposit of layered gravels, sands, silts, and other... More >>

Alluvium

Alluvium, uh LOO vee uhm, is clay, silt, sand, gravel, or other material deposited by rivers or... More >>

Landslide

Landslide, in geology, is a mass of earth or rocks that slides down a slope. Two conditions are... More >>

Oxbow lake

Oxbow lake is a crescent-shaped lake that forms when a river channel is cut off from the main... More >>