Winds in the desert could be up to 60 mph &amp; erode Wind erosion &amp; transportation Dust bowl of the 1930's. Wind picks up sediments where the fine grains are carried up and the heavier sand grains are moved closed to the ground in leaping pattern (saltation) (sandstorm) Yardangs (Streamlined parallel ridges aligned with the direction of a strong prevailing wind ~ 10 m high &amp; ~ 100 m long Wind-blown sand can sculptor isolated pebbles, cobbles or boulders into artifacts (ventifacts) rocks with flat wind abraded surfaces Deflaction the removal of clay, silt ,and sand by wind erosion Blowout is in a depression on land surface caused by wind erosion Desert pavement (pebble armor) - the pebble layer prevents the wind from removing sediments usually after the wind has removed the fine grained material Wind deposits Loess - wind blows silt &amp; clay Porosity - 60% - fertile Sand dunes - mounds of loose sand grains heaped up by wind composition of sand dune - feldspar, quartz, limestone, and rocks Wind ripple Sand moves z to the long dimension of the ripples Types of Dunes Type of sand dune is determined by the amount of sand, direction, duration, and strength of wind Barchan - for hot sandy area, crescent shape, Tips point to wind direction Transverse dune - relatively straight elongated due oriented z to the wind.
(the heavier sand grains; closed; to the ground) (~ 100 m long Wind-blown sand; can sculptor; isolated pebbles, cobbles or boulders) Context(~ 100 m long Wind - blown sand can sculptor,List([387, 428))):(Winds in the desert; could be; up to 60 mph &amp; erode Wind erosion &amp; transportation Dust bowl of the 1930's. Wind picks up sediments where the fine grains are carried up and the heavier sand grains are moved closed to the ground in leaping pattern (saltation) (sandstorm) Yardangs (Streamlined parallel ridges aligned with the direction of a strong prevailing wind ~ 10 m high &amp; ~ 100 m long Wind-blown sand can sculptor isolated pebbles, cobbles or boulders into artifacts (ventifacts) rocks with flat wind abraded surfaces Deflaction the removal of clay, silt ,and sand by wind erosion Blowout is in a depression on land surface caused by wind erosion Desert pavement (pebble armor) - the pebble layer prevents the wind from removing sediments usually after the wind has removed the fine grained material Wind deposits Loess - wind blows silt &amp; clay Porosity - 60% - fertile Sand dunes - mounds of loose sand grains heaped up by wind composition of sand dune - feldspar, quartz, limestone, and rocks Wind ripple Sand moves z to the long dimension of the ripples Types of Dunes Type of sand dune is determined by the amount of sand, direction, duration, and strength of wind Barchan - for hot sandy area, crescent shape, Tips point to wind direction Transverse dune - relatively straight elongated due oriented z to the wind) (Barchan - for hot sandy area, crescent shape, Tips point to wind direction Transverse dune - relatively straight elongated due; oriented; z to the wind) (Blowout; is; in a depression on land surface) (Loess - wind; blows; silt &amp) (loose sand grains; heaped up; by wind composition of sand dune - feldspar, quartz, limestone, and rocks Wind ripple Sand moves z to the long dimension of the ripples Types of Dunes) (Wind; picks up; sediments where the fine grains are carried up) (the wind; from removing; sediments; T:usually after the wind) (Type of sand dune; is determined; by the amount of sand) (Streamlined parallel ridges; aligned; with the direction of a strong prevailing wind ~) (the fine grains; are carried up; L:sediments) (Yardangs; has removed; the fine grained material Wind deposits) Context(Yardangs has removed,List([276, 788))):(rocks with flat wind abraded surfaces; Deflaction; ) Context(Yardangs rocks with flat wind abraded surfaces Deflaction has removed,List([276, 788))):(the removal of clay, silt ,and sand by wind erosion Blowout is in a depression on land surface; prevents; the wind; from removing sediments usually after the wind) (the fine grained material; deposits; Wind) (the heavier sand grains; are moved; closed to the ground) (a depression on land surface; caused; by wind erosion Desert pavement)
~ 100 m long Wind - blown sand can sculptor,List([387, 428)) Yardangs has removed,List([276, 788)) Yardangs rocks with flat wind abraded surfaces Deflaction has removed,List([276, 788))
the heavier sand grains ~ 100 m long Wind-blown sand Winds in the desert Barchan - for hot sandy area, crescent shape, Tips point to wind direction Transverse dune - relatively straight elongated due Blowout Loess - wind loose sand grains Wind the wind Type of sand dune Streamlined parallel ridges the fine grains Yardangs rocks with flat wind abraded surfaces the removal of clay, silt ,and sand by wind erosion Blowout is in a depression on land surface the fine grained material the heavier sand grains a depression on land surface
closed can sculptor could be oriented is blows heaped up picks up from removing is determined aligned are carried up has removed Deflaction prevents deposits are moved caused
to the ground
isolated pebbles, cobbles or boulders
up to 60 mph &amp erode Wind erosion &amp transportation Dust bowl of the 1930's. Wind picks up sediments where the fine grains are carried up and the heavier sand grains are moved closed to the ground in leaping pattern (saltation) (sandstorm) Yardangs (Streamlined parallel ridges aligned with the direction of a strong prevailing wind ~ 10 m high &amp ~ 100 m long Wind-blown sand can sculptor isolated pebbles, cobbles or boulders into artifacts (ventifacts) rocks with flat wind abraded surfaces Deflaction the removal of clay, silt ,and sand by wind erosion Blowout is in a depression on land surface caused by wind erosion Desert pavement (pebble armor) - the pebble layer prevents the wind from removing sediments usually after the wind has removed the fine grained material Wind deposits Loess - wind blows silt &amp clay Porosity - 60% - fertile Sand dunes - mounds of loose sand grains heaped up by wind composition of sand dune - feldspar, quartz, limestone, and rocks Wind ripple Sand moves z to the long dimension of the ripples Types of Dunes Type of sand dune is determined by the amount of sand, direction, duration, and strength of wind Barchan - for hot sandy area, crescent shape, Tips point to wind direction Transverse dune - relatively straight elongated due oriented z to the wind
z to the wind
in a depression on land surface
silt &amp
by wind composition of sand dune - feldspar, quartz, limestone, and rocks Wind ripple Sand moves z to the long dimension of the ripples Types of Dunes
sediments where the fine grains are carried up
sediments T:usually after the wind
by the amount of sand
with the direction of a strong prevailing wind ~
L:sediments
the fine grained material Wind deposits
the wind from removing sediments usually after the wind
Wind
closed to the ground
by wind erosion Desert pavement