A rockslide is a type of landslide caused by rock failure in which part of the plane of failure passes through intact rock and material collapses en masse and not in individual blocks. While a landslide occurs when loose dirt or sediment falls down a slope, a rockslide occurs only when solid rocks are transported down slope. The rocks tumble downh... Found on http://en.wikipedia.org/wiki/Rockslide
(from the article `landslide`) Rockslides and other types of slides involve the displacement of material along one or more discrete shearing surfaces. The sliding can extend ... Found on http://www.britannica.com/eb/a-z/r/59
(rock avalanche) A slide involving a downward and usually sudden movement of newly detached segments of bedrock sliding or slipping over an inclined surface of weakness such as a bedding plane, fault plane, or joint surface. Found on https://www.encyclo.co.uk/local/22327