The A horizon has hue of 5YR to 10YR, value of 3 to 5, and chroma of 2 or 3. Texture is silt loam, loam, silty clay loam, or clay loam. Reaction ranges from slightly acid to moderately alkaline. The Bw horizon has hue of 2.5YR to 10YR, value of 3 to 5, and chroma of 2 to 8. Texture is silt loam, loam, silty clay loam, or clay loam.
Reaction ranges from slightly acid through moderately alkaline.
The C horizon has hue of 2.5YR to 10YR, value of 4 to 6, and chroma of 2 to 8. The C horizon contains few films and soft masses of calcium carbonate. The C horizon is slightly acid to moderately alkaline. Port soils have organic matter content that decrease irregularly as depth increases and is more than 0.5 percent at a depth of 50 inches. Keokuk and Reinach soils have less than 18 percent clay in the control section.