deserts and wind eolian - exam 1 Flashcards
how does sediment move?
water
gravity
ice
wind
a dry area on the lee side of a mountain range
rain shadow desert
constant wind direction
limited sand supply
barchan dune
constant wind direction
large sand supply
transverse dune
converging winds
limited sand supply
longitudinal dune
the most important erosional agent non the desert
water
wind removes finer grained material and coarse material is left behind as a surface layer
desert pavement formation
a cobble or pebble polished and shaped by the sandblasting effect of wind
ventifacts
fan shaped deposit of sediment when a stream’s slope is abruptly reduced
alluvial fan
an apron of sediment along a mountain front created by the coalescence of alluvial fans
bajada
a stream that consists of numerous intertwining channels
braided stream
the flat, central area of an undrained desert basin
playa
a temporary lake in a playa
playa lake
an isolated mountain remnant characteristic of the late stage of erosion in a mountainous arid region
inselberg
causes loss of soil and vegetation in a desert
blowout