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| downslope movement of rock materials by gravitational forces without being carried within, on, or under any other medium |
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| factors affecting slope stability; force of attraction between two bodies |
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| factor affecting slope: strength of a material derived from properties other than intergrangular friction |
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| factor affecting slope; force that resisits the motion or tendency of motion between two bodies or between a body and a medium |
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| angle up to which loose uncosolidated materials will be at rest; when angle is exceeded, materials will begin to slide and roll downslope |
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| the slow, continuous movement of regolith downslope under influnece of gravity (mass wasting) |
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| type of mass wasting in whcih soil and loose rock move over a laterally confined, basal shear zone, oriented roughly paralle to the ground surface, with litte rotation of the sliding materials |
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| mass wasting; shearing and rotation of regolith or rock along curved concave-upward , slip surfaces with and axis of motion parallel to slope face |
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| free fall of rock fragments newly detached from very steep surface |
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| accumulation of rock fragments at base of a steep slope such as a cliff or road cutt |
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| sudden and rapid movement of rock down surface |
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