Mean annual temperature is about 49 degrees F, and mean annual precipitation is about 36 inches. Darien silt loam, on a 3 percent slope in a cultivated field. Solum thickness ranges from 30 to 50 inches. Depth to carbonates ranges from 25 to 48 inches. The particle-size control section averages 28 to 35 percent clay.
Rock fragments are mainly channers of shale.
The Ap horizon has hue of 10YR or 2.5Y, value of 2 to 4, and chroma of 1 to 4. Texture is loam, silt loam or silty clay loam in the fine earth fraction. Structure is weak or moderate granular or weak subangular blocky. Consistence is very friable or friable. Rock fragments range from 2 to 35 percent, and include up to 5 percent greater than 3 inches in diameter.