Erosion the physical removal and transporting of rock material by natural agents such as water, wind or ice.
Dec 13, 2015
Erosion
the physical removal
and
transporting
of rock material
by natural agents
such as
water, wind or ice.
Wind erosionWind-blown sand (silica) erodes
softer rock (shale , limestone) leaving behind the more resistant sandstone
Type of mass movement
Amount of water Time / speed Composition Causes
Creep
Slump
Earthflow
Mudflow
Lahar
12.3 Mass Movement (pg. 268-270)
Types of Mass Movement
These are all types of Landslides!!!!!
• Creep:
• Slump:
• Earthflow:
• Mudflow:
Factors that Effect Landslides
• Water/rainfall
• Composition of the ground
• Amount of loose weathered material
Triggers:
• Earthquakes
• Gravity/steepness of the slope
• Erosion (undercutting)
The remains of the massive landslide are seen on Monday, March 24 2014. The landslide blocked the highway and the Stillaguamish River.