- a loamy deposit formed by wind, usually yellowish and calcareous, common in the Mississippi Valley and in Europe and Asia.
Origin of loess
Examples from the Web for loess
By accenting the height of the ridges the loess also adds to the scenery of the county.
A disadvantage of the loess lies in the readiness with which it washes.
The thickest known deposit of loess, 335 meters, is on the Loess Plateau in China.
In Europe and in the Americas, accumulations of loess are generally from 20 to 30 meters thick.
Many thousands of square miles of northern China are covered with loess.Geology
William J. Miller
- a light-coloured fine-grained accumulation of clay and silt particles that have been deposited by the wind
Word Origin and History for loess
1833 (in Lyell), "unstratified deposit of loam," coined 1823 by German mineralogist Karl Cäsar von Leonhard (1779-1862) from German Löss "yellowish-gray soil," from Swiss German lösch (adj.) "loose" (cf. German los; see loose). Related: Loessial.
- A very fine grained silt or clay, thought to have formed as the result of grinding by glaciers and to have been deposited by the wind. Most loess is believed to have originated during the Pleistocene Epoch from areas of land covered by glaciers and from desert surfaces.