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• Bk horizon: Hue - SYR through tOYR <br />Value: 5 through 8 dry, 4 through 7 moist <br />Chroma: 2 through 4 <br />Texture: loam, sandy clay loam, or day loam (averages 18 to 30 percent clay). <br />Calcium carbonate equivalent: 15 to 40 percent <br />COMPETING SERIES: These are the Bisodi (T), Shalaco (T), and Wayneco (T) series. Bisodi, Shalace and <br />Wayneco soils have less than 18 percent day. <br />GEOGRAPHIC SETTING: Pinon soils are on knolls, ridges, mesas and hillslopes at elevations of 5,500 to 6,700 <br />feet. Slope gradients range from 1 to 30 percent. These soils formed in alluvium and residuum derived from <br />limestone. Pinon soils are in a warm dimate having mean annual temperature ranging from 49 to 56 degrees F., <br />and a mean summer temperature of 64 degrees F. Mean annual predpitation ranges from 10 to 15 inches. The <br />frost-free period is 130 to 170 days. In Colorado these soils have air temperatures ranging from 45 to 48 degrees <br />F. and have afrost-free period of 90 to 130 days with elevations up to 7,400 feet. <br />GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dean and Deama soils and the competing Harvey <br />soils. Dean soils have 40 percent or more carbonate in the conrol section and they lad< a lithic contact within a <br />• depth of 20 inches. Deama soils have more than 35 percent rock fragments in the partide-size control section. <br />DRAINAGE AND PERMEABILITY: Well drained; slow surface runoff; moderately slow permeability. <br />USE AND VEGETATION: These soils are used primarilyfor livestock grazing. Native vegetation is pinyon, juniper, <br />grams grass and shrubs. <br />DISTRIBUTION AND EXTENT: Central New Mexico and southern Colorado. The series is of moderate extent. <br />MLRA OFFICE RESPONSIBLE: Temple, Texas <br />SERIES ESTABLISHED: Valencia County (East Valencia Area), New Mexico, 1970. <br />REMARKS: DIAGNOSTIC HORIZONS AND FEATURES RECOGNIZED IN THIS PEDON ARE: <br />Ochric epipedon -from the soil surface to a depth of about 7 inches. (A horizon) <br />Calcic horizons -the zone between 7 and 16 inches. (Bk1, Bk2 horizons) <br />Lithic contact -the occurrence of limestone at 16 inches. <br />• National Cooperative Soil Survey, U.S.A. <br />(Revised March 2006) Attachment 2.04.9-3-27 <br />