Figure 10.33: These vertical cliffs are formed from fine grained, windblown silt and clay. ( 39 )
Lesson Summary
- Wind can carry small particles like sand, silt and clay.
- Wind erosion produces sand blasting of surfaces and produces desert pavement, ven-
tifacts and desert varnish. - Sand dunes are some of the most common wind born deposits, which come in many
different shapes and sizes. - Loess is a very fine grained, wind borne deposit that is important to soil formation in
many regions.
Review Questions
- Discuss suspended load and bed load transport by wind.
- Describe how desert pavement forms.
- Discuss the factors necessary for sand dunes to form.
- Name four types of sand dunes that form in desert areas.
- Name one type of wind deposition.
- Why is wind erosion more important in arid regions than humid areas?
Vocabulary
barchan dune Crescent shaped dune that forms in regions of ample sand, constant winds
& hard ground.