Ockley silt loam on a 1 percent slope in a cultivated field at an elevation of 1010 feet. 39 degrees 44 minutes 31.0 seconds N. and long. The depth to the base of the argillic horizon ranges from 40 to 72 inches and is the same as the depth to calcareous stratified sand and very gravelly sand. The thickness of the loess or silty material ranges from 0 to 20 inches. The Ap, A, or BA horizons have hue of 10YR, value of 4 or 5, and chroma of 2 to 4.
Texture is commonly silt loam or loam, and less commonly sandy loam, silty clay loam, or clay loam.
Reaction ranges from moderately acid to neutral. Rock fragments are dominantly igneous and average content is 0 to 10 percent. The Bt or BE horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 4 to 6. Reaction ranges from very strongly acid to slightly acid. The 2Bt2 or 2BE horizon has hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 4 to 6.