{"thcode":4,"term":{"code":"1.5","name":"Mass wasting material","parent":"1","scope":"Deposits formed by the dislodgement and downslope transport of soil and rock material under the direct application of gravitational body stresses."},"uf":[],"bt":[{"code":"1","name":"Unconsolidated material","parent":"0","scope":"A sediment that is loosely arranged or unstratified, or whose particles are not cemented together, found either at the surface or at depth."},{"code":"0","name":"Earth material","parent":null,"scope":"Geologic map unit classification (Bruce R. Johnson) version 6.2: A hierarchical classification of earth materials for digital geologic maps."}],"nt":[{"code":"1.5.1","name":"Colluvium","parent":"1.5","scope":"A general term applied to any loose, heterogeneous, and incoherent mass of soil material and\/or rock fragments deposited by rainwash, sheetwash, or slow, continuous downslope creep, usually collecting at the base of gentle slopes or hillsides."},{"code":"1.5.3","name":"Debris flow","parent":"1.5","scope":"A moving mass of rock fragments, soil, and mud, more than half of the particles being larger than sand size."},{"code":"1.5.4","name":"Landslide","parent":"1.5","scope":"A general term covering a wide variety of mass-movement landforms and processes involving the downslope transport, under gravitational influence, of soil and rock material, en mass."},{"code":"1.5.2","name":"Mudflow","parent":"1.5","scope":"Deposits formed by a process characterized by a flowing mass of predominantly fine-grained earth material possessing a high degree of fluidity during movement."},{"code":"1.5.5","name":"Talus","parent":"1.5","scope":"An outward sloping and accumulated heap or mass of rock fragments of any size or shape (usually coarse and angular) derived from and lying at the base of a cliff or very steep, rocky slope, and formed chiefly by gravitational falling, rolling, or sliding."}],"rt":[]}