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Landslides: Rock & Block Slide Diagnostic Characteristics |
Joint controlled translational movement in rock masses
along bedding planes and similar discontinuities. The conditions for sliding
are: the strikes of both the sliding plane and the slope face lie parallel
(±20°) to each other; the failure plane "daylights" on the slope face; the dip
of the sliding plane is greater than f'; the upper end of the sliding surface
either intersects the upper slopes or terminates at at tension crack or
discontinuity; sliding mass is bound by release surfaces of negligible
resistance. Movement along distinct slide or shear surfaces, EPOCH (1993).
(Image Source: Landslide Types &
Processes, USGS Factsheet FS 2004-3072,
http://pubs.usgs.gov/fs/2004/3072/)
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