Neutral or slightly alkaline in the upper part, neutral to strongly alkaline in the lower part. Few to continuous fine to coarse carbonate coats on rock fragments or the bedrock surface. These are the Atlow , Cottle , Gabbvally , Hooplite , Olac , Stewval , and Thike series. Potential competitors in a similar family are the Boomstick , Checkett , Fortyday , Nevo , Phliss , Rowel , and Soughe series. Atlow and Gabbvally soils have 35 to 50 percent rock fragments in the argillic horizon.
Boomstick soils have mainly channers or flagstones in the particle-size control section.
Checkett soils are calcareous in all parts. Cottle and Soughe soils have mainly pebbles in the particle-size control section. Fortyday , Hooplite , Olac , Phliss , Stewval , and Thike soils have less than 27 percent clay in the particle-size control section. In addition, Olac soils are noneffervescent throughout. Nevo soils do not have horizons with identifiable secondary carbonates and have secondary silica coats on the lithic contact.