The gradual downhill slide of weathered material; the slow, gradual movement of a hill's upper layers caused by the pull of gravity on loose stones, gravel, and soft topsoil
Natural and Environmental Disaster Information Exchange System European Commission NEDIES, Forces of Nature: TQ 2000, Landslide Glossary, Directorate General Joint Research Centre DG JRC, Institute for the Protection and Security of the Citizen (IPSC), Varese, Italy 2012. http://library.thinkquest.org/C003603/english/land slides/glossary.shtml?tqskip1=1, (ND/ Lndsld Sci - Brit) {156}
Natural and Environmental Disaster Information Exchange System European Commission NEDIES, Forces of Nature: TQ 2000, Glossary (definitions of important terms related to forces of nature), Directorate General Joint Research Centre DG JRC, Institute for the Protection and Security of the Citizen (IPSC), Varese, Italy 2012. http://library.thinkquest.org/C003603/english/glos sary.shtml, (ND/ Gen - Brit) {154}