These soils formed in old alluvium or in a silty mantle 1 to 3 feet thick over old alluvium. Slopes range from 2 to 20 percent. Pickwick silt loam - cultivated. Solum thickness and depth to rock is greater than 60 inches. Some pedons have a few rounded pebbles or angular gravel in the solum and some contain thin gravelly layers in the lower part of the solum.
Reaction is strongly acid or very strongly acid except in surface layers that have been limed.
Transition horizons have color and texture similar to adjacent horizons. The Ap horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 4 to 6. Texture is silt loam, or in some severely eroded areas it is silty clay loam. Some pedons, have a thin A horizon with hue of 10YR, value of 3, and chroma of 2 or 3. The upper part of the Bt horizon has hue of 7.5YR to 2.5YR, value of 4 or 5, and chroma of 4 to 8.