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Loess and Eolian Dust

Blowing dust image                Chinese Loess Plateau - Wikipedia Commons                Peoria Loess Thickness Map

Loess and Eolian dust refer to silt-sized material deposited on the Earth surface by winds. Extensive loess deposits formed during the Ice Ages in areas bordering large, continental glaciers. These deposits provide some of the most dramatic examples of changes in climate and the effect of processes that shape the landscape. Successive layers are often analyzed to provide a history of the winds and surface processes through time.

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Investigators who wish to contribute their data to our loess archive can find information on contributing below. Data and study description information can be contributed by emailing your data to