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Landslides: Rock Topple Diagnostic Characteristics |
Toppling failures are distinguished by the forward
rotation of a unit about a pivot point. Typically involving tall columns of
rock. Vertical or steeply dipping discontinuities behind the block allow the
rock mass to topple out of the face and second set of orthogonal joints, which
defines the column height. Similar to a fall but involves a pivoting action
rather than a complex separation at the base of the failure, EPOCH (1993).
 
(Image Source: Landslide Types &
Processes, USGS Factsheet FS 2004-3072,
http://pubs.usgs.gov/fs/2004/3072/)
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