The soil is usually calcareous throughout but is noncalcareous in the upper few inches in some pedons. The soil is dry in the moisture control section more than half the time cumulative that the soil temperature at a depth of 20 inches is 41 degrees F. and is never moist in some or all parts for as long as 90 consecutive days when the soil temperature at a depth of 20 inches is 48 degrees F. or more. This soil is moist for 60 consecutive days when the soil temperature at a depth of 20 inches is 41 degrees F., which occurs April 21-27, but is dry in all parts of the moisture control section for at least 60 consecutive days from July 15 to October 25 and for at least 90 cumulative days during that period. It is very fine sandy loam, fine sandy loam, loam, silty clay loam, or clay loam. This horizon is slightly alkaline or moderately alkaline.
Reaction ranges from moderately alkaline to very strongly alkaline.
The Bk horizon is discontinuous and is absent in many pedons. Carbonates range from 4 to 10 percent with accumulations as small masses, streaks, or seams that decrease with increasing depth or the carbonates are disseminated throughout. These are the El Rancho , Mikim , Neville , Paradox , Pojoaque , Shavano , Thedalund , Theedle , and Tsosie series. El Rancho, Neville, Paradox and Pojoaque soils have hue of 7.5YR or redder. Mikim soils are moist in some or all parts of the moisture control section for at least 90 cumulative days when the soil at a depth of 20 inches is 41 degrees F. or more and are moist for 45 consecutive days following July 15.