The mean annual soil temperature ranges from 39 to 44 degrees F. and the mean summer soil temperature ranges from 47 to 52 degrees F. Rock fragments range from 0 to 35 percent and may be either cobble, pebbles, or a mixture of both throughout the soil to the paralithic contact. The EC is 2 mmhos or less throughout. Reaction is typically neutral or mildly alkaline but may be moderately alkaline due to recharge of carbonates from upslope. Matrix texture is loam, clay loam, or sandy clay loam with 18 to 35 percent clay and more than 15 but less than 35 percent fine or coarser sand. Coarse fragments do not exceed 35 percent as defined above and are cobbles or pebbles or both.
Reaction ranges from neutral to moderately alkaline.
Matrix texture is as defined for the Bt horizon. The Btk is typically part of the argillic horizon but may be transitional in some pedons. Reaction is mildly or moderately alkaline. Matrix textures are loam, fine sandy loam, sandy loam, or sandy clay loam modified with 0 to 35 percent cobble, pebbles, or both. Clay ranges from 15 to 28 percent.