The organic soil materials lack free carbonates in all parts of the control section. Some pedons contain surface layers composed of hemic or sapric material. The layers in the surface tier are quite variable in color depending upon the stage of decomposition. Hue ranges from 10YR to 5YR, value from 2 to 6, and chroma from 1 to 4. 7.5YR or 5YR, values of 2 to 5 and chroma of 1 to 5.
Colors become darker upon brief exposure to air.
Rubbed colors have about the same range in the colors of broken faces, but in some pedons they differ by 0.5 to 1 unit in chroma or value or both. The lighter colors are generally those of materials that contain more fiber. The layers in the subsurface and bottom tier are commonly massive, but in some pedons they have weak thick platy structure. The materials are dominantly of hemic material. In some pedons, layers of fibric or sapric materials are within the subsurface and bottom tier but total thickness of either material is less than 10 inches.