The Bx, Btx, or Btxg horizon has hue of 2.5YR to 10YR, value of 4 to 6, and chroma of 1 to 6, and is mottled. Faces of peds have dominant chromas of 2 or less. Texture is silt loam, loam, clay loam, or silty clay loam and contains from 0 to 20 percent coarse fragments. The Cx or C horizon has hue of 10R to 5YR, value of 3 to 5, and chroma of 2 to 4. It contains coarse mottles with hue of 5YR to 10YR, value of 5 or 6, and chroma of 1 to 8.
Texture is silt loam, loam, clay loam, or silty clay loam.
Coarse fragments increase markedly as depth increases and are as much as 20 to 35 percent or more by volume near the base of the horizon. The C horizon is massive, dense, brittle and firm or very firm. These are the Brinkerton , Calvert , Doylestown , Ginat , Robertsville , Sheffield and Thorndale series in the same family. The Brinkerton, Doylestown, Ginat, Robertsville, Sheffield and Thorndale soils all have sola thicker than 40 inches. The Calvert soils have 2C horizons, which have finer textures than the overlying Bx horizon, with a depth of 40 inches.