Continued high winds will pick up dust and silt particles and blow clouds of them cross-country until the wind dies down and the dust and silt fall to earth. Sometimes, especially where I live in North Idaho, the loess (luss) was formed into what look like sand dunes. Dust dunes, I guess.
Loess
The resulting deposit is called loess.
Loess is very fertile while sand is not
nebraska
Your question doesn't make sense to me . . . maybe you meant, "How does a loess (luss) deposit form?" Loess is a deposit of dusty silty dirt that has been blown into an area from a different location. It often deposits in the shape of sand dunes. The "Palouse Loess Deposit" around Pullman, WA and Moscow, ID is a great example of dune-shaped loess deposits.
yes
loess it is pronounced as less
The English word for Loess is actually also loess, a word that doesn't come up often in everyday speech. Loess means "A buff to gray windblown deposit of fine-grained, calcareous silt or clay" --credit to dictionary.reference.com
Loess tends to develop into very rich soils.
A deposit of very fine wind blown dust in river valleys.
A windblown deposit of fine dust is known as loess. Loess is typically made up of silt-sized particles that have been carried by the wind and deposited in layers. It is common in arid or semi-arid regions and can play a significant role in soil formation and fertility.
loess