By Dylan Black
An instantaneous collapse of a slope along a generally flat, sliding plane that may or may not involve the liberating effect of water or clay. The material that begins to slide down takes the form of a rigid mass that is suddenly displaced altogether without any fluid flow. However, the presence of liquid may perhaps aid in the landslide, and many landslides have been the outcome of a heavy rain that saturates the slope, severely increasing the possibility of a landslide.
A piece of a water-saturated slope moves only a small distance downhill. This typically occurs during or immediately after heavy rainfall. At the point in which the flow originates, an undoubtable scar is typically cut into the surface of the slope, with either cracks or prominent over-steepened scraping force.
The slowest and least perceptible (quite fittingly named in that case) form of mass wasting, consisting of a very gradual downhill movement of soil and regolith so unobtrusive that it can typically only be identified and proved by other pieces of evidence. The entire slope is usually involved. Creep is so actually such as prevalent phenomenon that is occurs all over the world across sloping land. Although most notable on steep, lightly vegetated slopes, it can also occur on gentle slopes that have dense plant cover. Wherever weather materials are available for movement on land that is not flat, creep is a persistent form of mass wasting.