Rockslides is the term given to the sudden downslope movement
of newly detached masses of bedrock (or debris slides, if
the rocks are mixed with other material or regolith). These
are common in glaciated mountains with steep slopes and
also in places where there are planes of weakness, such as
bedding planes, or fracture planes that dip in the direction of
the slope. Like rockfalls, rockslides may form fields of huge
boulders coming off mountain slopes. The movement to this
talus slope is by falling, rolling, and sliding, and the steepest
angle at which the debris remains stable is known as the
angle of repose. The angle of repose is typically 33°–37° for
most rocks.














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