The Bt horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 3 to 6. It is silty clay loam or silty clay and the upper 20 inches of the argillic horizon average between 35 and 48 percent clay, but some subhorizons range up to as much as 55 percent. The Bt horizon is strongly acid to extremely acid. The Btx horizon has hue of 10YR or 2.5Y, value of 4 to 6, and chroma of 2 to 4. It is silty clay loam or silt loam.
Reaction is strongly acid to extremely acid.
Some pedons have E' horizons above the 2Btx horizons. Expression of the brittleness and consistence of the fragic horizons range from moderate to weak. The 2B't horizon has hue of 7.5YR to 2.5Y, value of 4 to 6, and chroma of 2 to 6 and redox features with chroma of 2 or less. It is silty clay loam or silt loam. Reaction is strongly acid or moderately acid.