They formed in thick sandy sediments of marine deposits. These soils are on broad nearly level to moderately sloping broad interstream divides. Slopes are dominantly 2 to 5 percent but range from 0 to 12 percent. Betis loamy fine sand, on a smooth convex 2 percent slope, in woodland. Solum thickness is more than 80 inches.
Reaction ranges from very strongly acid through moderately acid limed.
Texture of the matrix is fine sand or loamy fine sand. Base saturation from 20 to 35 percent. The soil is dry in some part of the moisture control section for 75 to 90 cumulative days in most years. Some pedons have E horizons. Randomly distributed pockets of clean sand grains range from few to common.