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Arid Landscapes

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Arid Landscapes Arid and Humid Weathering Compared Humid Climates Arid Climates Rainfall Frequent Rare, May Be Seasonal, Often Violent Soil Cover Thick Thin or Absent ... – PowerPoint PPT presentation

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Title: Arid Landscapes


1
Arid Landscapes
2
Arid and Humid Weathering Compared
Humid Climates Arid Climates
Rainfall Frequent Rare, May Be Seasonal, Often Violent
Soil Cover Thick Thin or Absent
Vegetation Thick Sparse-no Continuous Cover
Chemical Weathering Intense Weak
Overall Landscape Evolution Mostly Uniform Processes Episodic Processes
3
Arid Erosion Cycle Youth
  • V-shaped Valleys
  • Divides Flat, Undissected
  • Much Like Youth in Humid Climates

4
Youthful Landscape, Arizona
5
Arid Erosion Cycle Maturity
  • Slopes Stay Steep, Retreat
  • Alluvial Fans
  • Playa Lakes
  • Pediments

6
Alluvial Fans, Utah
7
Mature Arid Landscape
8
How Pediments Form
9
Arid Erosion Cycle Old Age
  • Inselbergs
  • Playa Lakes
  • Pediplain

10
Old Arid Landscape
11
Monument Valley, Arizona
12
Playa Lake, California
13
Great Salt Lake, Utah
14
Closed Basins are Typical of Arid Regions
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