Loess is very fertile while sand is not
Loess is very fertile while sand is not
Loess is very fertile while sand is not
Loess is very fertile while sand is not
Loess is very fertile while sand is not
Loess is very fertile while sand is not
deflate
A thick deposit of windblown fine-grained sediments is called loess. This sediment is typically uniform, composed of silt-sized particles, and can be found covering large areas of land.
The loess in the United Sates and Europe is an indirect product of glaciation. Its sources is deposits of stratified drift. During the retreat of the ice sheets, many river valleys choked with sediment deposited by melt water. Strong westerly winds sweeping across the barren floodplains picked up the finer sediment and dropped it as a blanket on the eastern sides of the valleys.
loess/dunes or aeolian deposits
The thick loess deposits in South Dakota, Nebraska, and Iowa were formed during the last ice age about 10,000 years ago. The loess is a wind-blown sediment consisting of finely ground rock and mineral particles that were carried by glacial winds and deposited over the region.
Deposits of wind-blown rock flour are called loess. Loess is a finely grained sediment that is usually deposited in extensive layers, often forming fertile soils when mixed with other materials.
loess