A detached mass of soil that moves downslope over a curved failure surface under the influence of gravity. An earthflow is more complex than a slump; it has a higher moisture content and the moving mass of soil has some internal movement or "flow". Rates of movement are typically a few inches per year but faster rates can occur.

The rapid movement of saturated soil material down an incline.

A rapid mass movement of a flowing assemblage of saturated soil, vegetation, and associated debris.

A rapid type of downslope mass movement that involves soil and other loose sediments. Usually triggered by water saturation from rainfall.

A fluid mass movement of mainly fine-grained material, along with some broken rock, at slow or moderate speeds.

See debris flow.

A category of mass movement involving earth materials flowing downslope like a viscous fluid. Displacement varies from extremely slow to extremely rapid.