What is loess deposit?

Loess, an unstratified, geologically recent deposit of silty or loamy material that is usually buff or yellowish brown in colour and is chiefly deposited by the wind. Loess is a sedimentary deposit composed largely of silt-size grains that are loosely cemented by calcium carbonate.

How are silt deposits called loess?

How are silt deposits called loess related to glaciers? They are wind-blown accumulations are commonly are derived from glaciers. Rivers and streams flowing away from glaciers deposit: Outwash plains.

Where is the thickest loess deposits found?

Extensive loess deposits are found in northern China, the Great Plains of North America, central Europe, and parts of Russia and Kazakhstan. The thickest loess deposits are near the Missouri River in the U.S. state of Iowa and along the Yellow River in China.

What kind of materials can the wind move?

Dry loose material (wet sand will not be lifted); typically quartz, feldspar, clay and carbonates; fined-grained sediments What types of materials and sizes of particles can the wind move? Sand: mostly locally derived and travels only a short distance; Dust: can be transported over very long distances;

How are winds responsible for eroding the ground?

A process in which blowing winds life and carry away particles of clay, silt, and sand when they become loose and dry, gradually eroding the ground surface. Occurs on dry plains and deserts and on temporarily dry river floodplains and lake beds

Where do the prevailing wind belts come from?

Terms in this set (64) equator There is little surface wind at the ( ), and the air rises, forming clouds and rain as it cools 30 degree north and 30 degree south at ( ) and ( ) latitudes, the cooled air sinks, warms up, absorbs moisture, and yields clear skies temperate In ( ) zones, the prevailing wind belts come from the west tropics

How to study Physical Geology ch19 winds and deserts?

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