These soils have moderately slow to moderately rapid permeability in the organic material and slow permeability in the marly material. Slopes range from 0 to 6 percent. Edwards muck on a less than 1 percent slope in an idle area under the vegetation of shrubs and trees at an elevation of 955 feet. The organic fibers are derived primarily from herbaceous plants, but some layers contain as much as 20 percent woody material. The reaction of the organic material ranges from very strongly acid to slightly alkaline.
Free carbonates are in the organic layers in some pedons.
The Lma horizon has hue of 10YR to 5Y, value of 4 to 8, and chroma of 1 or 2. It is marly silt loam or marly silty clay loam. It is neutral to moderately alkaline. A layer less than 2 inches thick, of coprogenous material is present above the marly material in some pedons. In some pedons the marly material has a layer of sandy or loamy material less than 12 inches thick within a depth of 51 inches.