Factors affecting surface processes of Mass movement.
Slope or gradient: of the landscape is a major factor determining the speed of mass movement.
Water content: also controls the speed of mass movement in heavy rainfall occurs water acts as a lubricant.
Natural disasters : volcanic activity often results in mass mud flows and lahars
Vegitation: the roots of trees and other vegitation help bind the soil togther making preventing mass movement
Slope material: the composition of slopes will determine the liklihood and speed of mass movement
Types of mass movements
soil creep = slow
Earth flow = modrate
Slumping = modrate
Rockfall = fast
landslide = fast
mudflow/lather = fast
bogflow/bogburst = fast
avalanch = fast
naturally and humen inerface
wetting and deying
Soil absorbs water expading it presure = to soil particals to rise upward
soil drys = particals shrink downward creating space move down a slope due to gravity
creates bent trees
large secti0ons of rock fracture
occurs along the bedding plane of sedimentary rock
when this occurs the rock dips downwards causing the loose regolith to slide off
Sedimentary rocks are types of rock that are formed by the
accumulation or deposition of small particles and subsequent
cementation of mineral or organic particles on the floor of oceans
or other bodies of water at the Earth's surface.
mostly on steep slopes occurs when a large block of regolith breaks free from a slope
usually caused when the base of the slope is removed by weathering or human activity