Mineral soil at a transitional stage of leaching or a saline soil during solodization, in semi-arid, tropical environments; it has a sandy, acid, A soil horizon and a B horizon partially enriched with sodium-clay. The term was used in earlier systems of soil classification. Solonetz soils fall within the order aridisols in the US soil taxonomy and solonetz is a soil group in the World Reference Base for Soil Resources.