The Bt horizon has hue of 5YR through 2.5Y, value of 3 through 5 and chroma of 3 or 4 and it has few through many distinct or prominent high chroma mottles. Texture is loam, silt loam or clay loam in the fine-earth fraction, with the average clay content ranging from 18 to 28 percent. Consistence is friable or firm. Some pedons have a BC horizon. The Cd horizon has hue of 5YR through 2.5Y, value of 4 or 5 and chroma of 2 or 3.
Texture is fine sandy loam, loam or silt loam in the fine-earth fraction.
It is massive, or has weak or moderate medium or thick plate-like divisions. It is firm or very firm. Some pedons have a friable C horizon above the Cd horizon. Other pedons have a 2C and 3C horizon. The Nessel and Thrifton series are in the same family.