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Landslide
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Sudden downward movement (see mass movement) of a mass of soil or rocks from a cliff or steep slope. Landslides happen when a slope becomes unstable, usually because the base has been undercut or because materials within the mass have become wet and slippery.
A mudflow happens when soil or loose material is soaked so that it no longer adheres to the slope; it forms a tongue of mud that reaches downhill from a semicircular hollow. A slump occurs when the material stays together as a large mass, or several smaller masses, and these may form a tilted steplike structure as they slide. A landslip is formed when beds of rock dipping towards a cliff slide along a lower bed. Earthquakes may precipitate landslides.
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freeze–thaw
geomorphology
glacial trough
hanging valley
Holocene epoch
karst
landform
landslide
mass movement
mechanical weathering
misfit valley
mountain
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solifluction
solution (earth science)
V-shaped valley
valley
weathering
biological weathering
carbonation
chemical weathering
dry valley
erosion
freeze–thaw
geomorphology
glacial trough
hanging valley
Holocene epoch
karst
landform
landslide
mass movement
mechanical weathering
misfit valley
mountain
physical weathering
plain
Pleistocene epoch
Precambrian era
rift valley
soil erosion
solifluction
solution (earth science)
V-shaped valley
valley
weathering
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