The Brookshire series consists of very deep, well drained, permeable soils that form in colluvium on the lower part of mountain slopes. Elevation ranges from about 2,000 to 4,800 feet above sea level. Slopes are dominantly 20 to 65 percent, but range from 7 to 65 percent. Thickness of solum ranges from 30 to 55 inches and depth to bedrock from 40 to 70 inches. Fragments of phyllite, slate, sandstone, or quartzite range from 10 to 35 percent by volume throughout, but the amount normally increases with depth.
Reaction is strongly acid or very strongly acid throughout.
The A horizon has hue of 10YR, value of 3, and chroma of 2 to 3. The fine earth fraction is loam or silt loam. Structure is weak or moderate, fine or medium granular. The E horizon, where present, has hue of 10YR, value of 3 and chroma of 3. Texture is silt loam or loam.