Mass Movement Vocabulary
· Landslide—A mass movement in which a fairly coherent mass of rock and/or soil rapidly moves down slope along a discrete plane; sometimes used to include all types of moderately rapid mass movements involving flows, falls, or slides.
· Creep—A mass movement that involves gradual down-slope movement (flow), too slow to be observed directly, but apparent in many long-term observations.
· Slumps—A mass movement process in which a fairly coherent mass of rock and/or soil moves down slope over a discrete surface, but curved (concave-upward) surface. Slumps occur much faster than creep but slower than slides.
· Mudflow-a fluid or hardened stream or avalanche of mud.
· Creep—A mass movement that involves gradual down-slope movement (flow), too slow to be observed directly, but apparent in many long-term observations.
· Slumps—A mass movement process in which a fairly coherent mass of rock and/or soil moves down slope over a discrete surface, but curved (concave-upward) surface. Slumps occur much faster than creep but slower than slides.
· Mudflow-a fluid or hardened stream or avalanche of mud.