WIND and DESERTS (Chapter 19) - Lecture Outline

Last updated: 04/20/07

Basic considerations

bullet

agents of erosion and deposition

bullet

eolian land shaping

bullet

deserts and climate change

1. Wind - generalizations

bullet

geologic agent

bullet

horizontal flow

bullet

fluids

bullet

typically turbulent

bullet

variable direction

2. Earth's circulation

bullet

more heat energy at equator

bullet

prevailing winds and circulation patterns

bullet

Coriolis effect

3. Deserts

bullet

Kinds of deserts

bullet

rainfall factor

bullet

subtropical

bullet

continental interior

bullet

rainshadow

bullet

coastal

bullet

polar
 

bullet

Semi-arid regions

bullet

Geologic processes in the desert

bullet

weathering

bullet

physical weathering

bullet

desert varnish
 

bullet

erosion agents

bullet

wind

bullet

streams
 

bullet

sediments and sedimentation

bullet

alluvial sediments

bullet

eolian sediments

bullet

evaporites

bullet

Geologic landforms

bullet

fans

bullet

pediments

bullet

dry wash

bullet

mesa

4. Erosion by wind

bullet

deflation

bullet

desert pavement

bullet

sandblasting

bullet

ventifacts

5. Deposition by wind

bullet

Formation of dunes

bullet

types of dunes

bullet

dust falls