Twelve orders exist in Soil Taxonomy, but three orders (Entisols, Inceptisols, and Aridisols) are common in the Laramie area.
|Entisols||Young or very weakly developed soils with no diagnostic horizons. They may be formed in fresh alluvium of floodplains, in fresh sand dune deposits, or on steep, eroded hill slopes where diagnostic horizons either cannot form or have not had time to form.|
|Inceptisols||Relatively young soils with weakly developed horizons and little accumulation of clays and organic matter. They have an ochric or umbric horizon and cambic subsurface horizon.|
|Aridisols||Soils with an aridic soil moisture regime and some B horizon development or a salic horizon and very little organic matter.|