1. Erosion

2. Er0sion
Erosion is the process where weathered rocks are transported and deposited in another located. Can be influenced by:
Wind
Gravity
Water
Glaciers

3. Wind Erosion
Wind can pick up, transport and deposit great amounts of sediment
Generally only very small particles are transported by wind
Humid areas and areas of high vegetation are less susceptible to wind erosion
Sediments are bound together

4. Wind Erosion Wind erodes deserts in 2 ways:
Deflation-Small particles such as clay and silt are lifted and removed
Abrasion-Rock surfaces are blown off by extreme wind

5. Gravity
Gravity causes erosion when material falls off of cliffs or elevated surfaces
Material is very poorly sorted at the base of the cliff (big sediments mixed with small sediments)
No time for material to be sorted by size

6. Water Erosion Streams erode their channels by abrasion and grinding
Sediments become dissolved inside the stream (dissolved load)
Sediments being carried by a stream can erode the banks as well

7. Water Erosion
Sheet Erosion-Erosion caused by runoff water. Runs along the surface in thin sheet
Least detrimental

8. Water Erosion
Rill Erosion-Water flows through very small flow paths down a hill

9. Water Erosion Gully Erosion-Water flows through a wide channel.
Most detrimental

11. Glacial Erosion
When glaciers move they pick up pieces of Earth’s landscape.
Till-Sediment deposited by glaciers when they melt
Poorly sorted when deposited
Glacial erosion is the only type capable of moving boulders