lósz

Lösz is the Hungarian term for loess, a wind-blown sediment composed mainly of silt-sized particles. It forms extensive, relatively uniform blankets over landscapes and is usually calcareous, giving it a light color and characteristic fertility.

Formation and composition: Loess is transported by wind from glacial or desert regions and deposited during cold, dry periods of the late Pleistocene and early Holocene. The sediments are typically fine-grained, highly friable, and can form steep cliffs and erodible slopes when exposed.

Distribution and soils: Large loess regions are found in Europe (for example along the Danube valley and the Central European plains), Asia (notably the Chinese Loess Plateau), and parts of North America (the Midwest). Soils developed on loess are often very fertile, with rich horizons and the potential to support agricultural productivity over long periods.

Geological significance and hazards: Loess deposits are susceptible to rapid erosion and slope failure, especially on steep faces or under heavy rainfall. While loess-derived soils can support high agricultural yields, their vulnerability to erosion requires careful land management to preserve soil resources and maintain stability in loess landscapes.