Mass Wasting - Parts of Landslide Flashcards
the material that is (practically) still in place and adjacent to the highest parts of the main scarp
crown
A steep surface on the undisturbed ground at the upper edge of the landslide, caused by movement of the displaced material away from the undisturbed ground. it is the visible part of the surface rupture.
main scarp
the highest point of contact between the displaced material and the main scarp
top
the upper parts of the landslide along the contact between the displaced material and the main scarp
head
a steep surface on the displaced material of the landslide produced by differential movements within the displaced material
minor scarp
the part of the displaced material of a landslide that overlies the surface of rupture, between the main scarp and the toe of surface of rupture
main body
the portion of the landslide that has moved beyond the toe of the surface rupture and overlies the original ground surface
foot
the point of the toe farthest from the top of the landlside
tip
the lower, usually curved margin of the displaced material of a landslide, it is the most distant from the main scarp
toe
the surface that forms the lower boundary of the displaced material below the original ground surface
surface of rupture
the part of the original ground surface overlain by the foot of the landslide
surface of separation
material displaced from its original position. it forms both the depleted mass and the zone of accumulation
displaced material
the area of landslide within which the displaced material lies below the original ground surface
zone of depletion
the area of the landslide within which the displaced material lies above the original ground surface
zone of accumulation
the volume bounded by the main scarp, the depleted mass, and the original ground surface
depletion
