ARID AND EOLIAN REVIEW QUESTIONS


VOCABULARY: wind; saltation; deflation; desert pavement; blowout; abrasion; ventifact; dune; sand supply; wind effectiveness; vegetation cover; barchan; slip face; parabolic; transverse; longitudinal; crossbedding; loess; early; middle; late; block faulted mountain; alluvial fan; bajada; playa; interior drainage; canyon; pediment; inselberg; exotic stream; arroyo; knick point; badlands; caprock; mesa; butte

What is the process when the agent of erosion is wind?
Which is wind is the least effective of all erosional agents?
Does it considerably shape the landscape?
In what four types of environments is wind most effective?
What is the movement by short jumps over the surface which results from wind?
In what two ways does wind erode the land surface?
What is the picking up and removing particles by the wind?
What is the most important effect of the wind?
What is the feature that results when wind removes the smallest particles and leaves larger ones as the surface covering?
What are the hollows and depressions excavated by the wind?
What is the grinding of particles against each other as particles carried by the wind strike the surface?
What are the rock fragments which are polished and faceted (gently curved, shiny surfaces) by wind erosion?
When does the wind deposit material?
What are hills of wind-blown sand?
If mean wind direction is nearly constant, what three variables influence dune formation?
Which type of dune is crescent shaped and characterized by a steep slip face which is concave leeward (downwind) in a dry vegetation-free environment and noted for its migration?
Which type of dune has horns pointing upwind in a hairpin like form with a slip face which is convex and associated with sand in moist vegetated areas?
Which type of dune is called an anklé and is like linked barchans at right angle to wind?
Which type of dune forms parallel to the wind direction where sand is especially abundant?
What is the internal structure of sand dunes with steeply inclined layers of sand from sand building upon the sloped surfaces?
What are the wind-blown deposits of silt-sized particles which may be a several hundred feet thick blanket of unweathered angular fragment with an almost 90° angle of repose?
What are the two origins of loess deposits?
What are the four ways that erosional processes in an arid region differ from those of a humid region?
What are the characteristic features of an early stage landscape in an arid region where block faulting has occurred?
What is the term for coalescing alluvial fans?
What are the temporary lakes associated with arid landscapes and interior drainage?
How does the middle stage of erosion of an arid landscape differ from the early stage?
What is the inclined bedrock erosion surface that fringes mountains as they become smaller with a concave upward profile?
How does the old stage of erosion of an arid landscape differ from the middle stage?
How has the local relief changed from the early through the old age stage?
What are the island-like remnant of the mountains remaining during the old age stage?
What is the term for a stream which flows through an arid region from a more humid area?
What is the term for a stream which carries water only after precipitation has fallen somewhere higher up in its drainage basin?
How does the downcutting of a stream in an arid region differ from that of a humid region?
How does the topography of an arid region generally differ from that of a humid region?
What type of landscape develops from erosion of fine grained clastics into rough topography in an arid or semi-arid area?
What is a large flat-topped plateau or upland formed by a resistant rock layer protecting the underlying layers?
What is the term for the resistant rock protecting the underlying layers?
What results as mesas become dissected by erosion or are small mesas?
Which form the steeper slopes in an arid region, a resistant or a non-resistant rock layer?



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