They are characterized by being dry most of the year and with limited leaching.
Aridisols contain subsurface horizons in which clays, calcium carbonate, silica, salts, and/or gypsum have accumulated.
Aridisols are divided into seven suborders: Cryids, Salids, Durids, Gypsids, Argids, Calcids, and Cambids; the definitions of which are presented in this unit.2. From the U.S. Soil Taxonomy soil-order classification system.
3. Etymology: from Latin aridus, "dry".