Reaction is extremely acid to moderately acid. The 3Bt horizon below the fragipan is variable in short distances. Hue ranges from l0R to 10YR, value of 3 to 6, and chroma 4 to 8, or it is a mottled horizon in shades of red, gray, and brown. Texture of the fine-earth is silty clay loam, silty clay, clay loam, or clay. Chert content is extremely variable over short distances ranging from as low as 30 percent by volume to as much as 90 percent by volume in discontinuous beds.
Reaction is extremely acid to moderately acid.
There are no other series in the family. Captina soils are on nearly level to moderately sloping uplands and old stream terraces on the Ozark Highlands and other areas. They formed in a thin mantle of silty material and the underlying colluvium and residuum weathered from limestone, cherty limestone and dolomite, and siltstone bedrock. Slopes range from l to l2 percent, but dominantly are less than 8 percent. The average annual temperature ranges from 54 to 57 degrees F,, and average annual precipitation ranges from 42 to 46 inches.