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Order I Sail Sera , New Horizon Mine <br />The combined thickness of the A and B horizons is 35 to 50 inches. The depth to <br />secondary carbonates ranges from 12 to 22 inches. The series particle -size control <br />section ranges frorn 15 to 40 percent fine sand or coarser and 0 to 15 percent rack <br />fragments. <br />The A horizon has hue of 2.5YR through 10YR, value of 4 through 6 dry, 3 <br />through 5 moist, and chroma of 3 through 6. Reaction is slightly alkaline or <br />moderately alkaline. Carbonate content ranges from 0 to 3 percent.. <br />The Bw horizon has hue of 2.5YR to 7.5YR, value of 4 through 6 dry, 3 through <br />5 moist, and chroma of 4 through 8. This horizon ranges from very fine sandy loam, <br />loarny very fine sand, fine sandy loam, sandy loam and is mildly alkaline to strongly <br />alkaline. Carbonate content ranges from 0 to 3 percent. <br />I The Bk and C horizons have hue of 2.5YR through 7.5YR, value of 5 through 8 <br />dry, and 4 through 8 moist, and chroma of 4 through 6. This horizon ranges from <br />very fine sandy loam, fine sandy loam, or sandy loam, and thin strata of gravelly fine <br />sandy loam, or loamy fine sand, below a depth of 40 inches. Reaction ranges from <br />slightly alkaline to strongly alkaline, Carbonate content ranges from 0 to 5 percent. <br />COMPETING SERIES: These are the Ignacio (NM), Parida (NNi), Remmit (CO), <br />Sandspring I(T AZ), and Turnback (VVY) series. Ignacio and Turnback sails have <br />bedrock at depths of 20 to 40 inches. Pa.rida soils have more than 15 percent rock <br />fragments in the particle -size control section. Rernmit and Sandspring soils have hue <br />yrellower than 7.5YR. <br />GEOGRAPHIC SETTING: Begay soils occur on fan remnants, structural <br />i benches and broad mesa tops at elevations of 4,700 to 7,400 feet. Slopes are 0 to <br />30 percent. These sails formed in deep eolian deposits and alluvium from <br />sedimentary racks. The climate is semiarid and the average annual precipitation <br />ranges from 8 to 14 inches. The mean annual temperature is 44 to 55 degrees F. <br />The mean summer temperature is 59 to 63 degrees F, and the freeze -free period <br />ranges from 110 to 175 days. <br />GEOGRAPHICALLY ASSOCIATED SOILS: These are the Anasazi Aneth and <br />Sogzie soils and the competing Mcepitz soils. Anasazi soils have a calcic horizon <br />and have a lithic contact at depths of 20 to 40 inches. Aneth soils do not have <br />cambic horizons and have a sandy particle size control section, Sogzie soils have <br />calcio horizons. <br />DRAINAGE AND PERMEABILITY: Well drained; very slow to medium runoff; <br />moderately rapid permeability. <br />USE AND VEGETATION: Used only as rangeland. Potential vegetation is <br />needleandthread, big sagebrush, blue grams, Indian ricegrass. <br />DISTRIBUTION AND EXTENT: Southeastern Utah and northwestern Colorado <br />Begay soils are moderately extensive. MLRA 34, 35 and 48A. <br />MLRA OFFICE RESPONSIBLE: Fhaenix, Arizona <br />SERIES ESTABLISHED: San Juan County, Utah, 1976. <br />REMARKS: These soils have been correlated to semidesert range sites in Utah. <br />Diagnostic horizons and features recognized in this pedon are: <br />Ochric epipedon - from 0 to 3 inches (A horizon). <br />Cambia; horizon -from 3 to 16 inches (13w horizon). <br />The Bk horizon is assumed to have too little carbonate to be a calcic horizon. <br />In December 1994 the classification was changed from Ustollic Camborthids to <br />Ustic Haplocambids. <br />Page ZA of 44 Date: 06M 1198 <br />