The 2Bt horizon has hue of 7.5YR or 10YR, value of 3 to 5, and chroma of 4 to 6. Texture of the 2Bt is clay loam, sandy clay loam, loam, fine sandy loam, or sandy loam or the gravelly analogs. Carbonates are present in some pedons. Reaction ranges from moderately acid to slightly alkaline. Some pedons have a 2Btk or 2BCtk horizon with colors like the 2Bt horizon.
Texture is sandy loam, fine sandy loam, or the gravelly analogs.
These horizons contain identifiable secondary carbonates. Reaction is slightly or moderately alkaline. Value is 5 or 6 and chroma is 3 or 4. Texture typically is sandy loam or fine sandy loam or gravelly analogs but some pedons have subhorizons of loam or loamy sand or their gravelly analogs. Sand content averages 55 percent or more in the 2C horizon but some pedons have subhorizons in the 2C with less than 55 percent sand.