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21 Cards in this Set

  • Front
  • Back
caused by wind; refers to the erosion, transportation, and deposition of materials
process of wind erosion that removes and lifts individual particles, literally blowing away unconsolidated, dry or noncohesive sediments
mechanical wearing and erosion of bedrock accomplished by the rolling and grinding of particles and rocks carried ina stream moved by wind in a "sandblasting" action, or imbedded in glacial ice
desert pavement
in arid landscapes, a surface formed when wind deflation and sheet flow remove smaller particles, leaving residual pebbles and gravels to concentrate at the surface; resembles a cobblestone street
blowout depressions
Eolian erosion whereby deflation forms a basin in areas of loose sediment.
the individual pieces and pebbles etched and smoothed by eolian erosion--abrasion by windblown particles
deflation and abrasion are capable of of streamlining rock structures, leaving distinctive rock formations or elongated ridges called...
surface creep
a form of eolian transport that involves particles too large for saltation; a process whereby individual grains are impacted by moving grains and slide and roll
a depostional feature of sand grains deposited in transient mounds, ridges and hills; extensive areas of sand dunes are called sand seas
erg desert
sandy deserts, or areas where sand is so extensive that it constitutes a sand sea
sand sea
an extensive area sand and dunes; characteristic of Earth's erg deserts
large quantities of find grained clays and silts left as glacial deposits.
flash flood
a sudden short lived torrent of water that exceeds the capacity of a stream channel; associated with desert and semiarid washes
an intermittently dry streambed that fills with torrents of water after rare precipitation events in arid lands
an area of salt crust left behind by evaporation on a desrt floor, usually in the middle of a bolson or valley; intermittently wet and dry
alluvial fan
fan shaped fluvial landform at the mouth of a canyon, generally occurs in arid landscapes where streams are intermittent
a continuous apron of coalesced alluvial fans, formed along the base of mountains in arid climates; presents a gently rolling surface from fan to fan
rugged topography, usually relatively low, varied relief and barren of vegetation; associated with arid and semiarid regions and rocks with low resistence to weathering
basin and range province
a region of dry climates, few permanent streams, and interior drainage patterns in the western US; composed of a sequence of horsts and grabens
the slope and basin area of between the crests of two adjacent ridges in a dry region
expansion of deserts worldwide, related principally to poor agricultural practices, improper soil moisture management, erosion and salinization, deforestation, and the ongoing climatic change; an unwanted semi-permanent invasion into neighboring biodomes