OTHER TOPICS -----> Intro/Maps Atmosphere Climate / Hydrosphere
Biosphere / Soils Tectonics Specific Environments

Fluvial Karst Oceanic Landforms Glaciers Arid Lands

Arid Lands Topography


I.   BASIC CONCEPTS AND TERMINOLOGY

A.   Mechanical Weathering Dominates

  1. slower process; more angular slopes (vs. humid terrain)
  2. rainfall -- not a lot, but intense
  3. wind as an erosional force
B.   Types of Deserts
  1. erg -- sand sea (satellite)
  2. reg -- desert pavement - Sonoran Desert - example #3
  3. hamada -- bedrock


II.   AEOLIAN (WIND) PROCESSES/LANDFORMS

A.   Erosion -- blowout/hollow / WY satellite / photo

B.   Transportation: saltation and traction

C.   Deposition

  1. sand dunes ... White Sands NM
  2. barchan (diagram)
  3. loess


III.   SPECIFIC LANDFORMS AND FEATURES

A.   Differential Erosion (diagram / example #1a / 1b / #2 / SE Arizona

  1. exotic stream
  2. stream bed = flat bottom, steep sides
  3. playas; some famous playas:
  4. alluvial fan / reverse angle / multiple
  5. basin and range (alluvial fans; playas)
B.   Mesa and Scarp Features
  1. caprock, scarp, and slope
  2. size: pinnacle / butte / mesa / plateau (map / satellite / Mogollon Rim)
C.   Badlands .... So. Utah ... AZ example

D.   Natural Bridge (stream erosion / satellite)

E.   Natural Arch (differential erosion) / #2 / #3 / #4 / #5 / collapsed arch

F.   Pedastals or Balanced Rocks


Fluvial Karst Oceanic Landforms Glaciers Arid Lands


OTHER TOPICS -----> Intro/Maps Atmosphere Climate / Hydrosphere
Biosphere / Soils Tectonics Specific Environments