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eh ESPEV, HUSTON & ASSOCIATES, INC. <br />• <br />immediately above the bedrock. The Al horizon has hue of 2.SY through <br />7.SYR, value of 4 or 5 dry, 2 or 3 moist, and chroma of 1 through 3. It is <br />medium acid to mildly alkaline (pH 6.0 to 7.6). This horizon typically has <br />crumb or granulaz structure but has subangulaz blocky structure in some <br />pedons. It is soft to slightly hazd. The B2t horizon has hue of 2.5Y <br />through 7.5YR, value of 5 or 6 dry, 3 through 5 moist, and chroma of 2 <br />through 4. It is slightly acid to midly alkaline (pH 6.5 to 7.8). Typically, <br />the horizon has subangulaz bocky primary structure but it has prismatic <br />structure in some pedons. It is typically light silty clay and has 35 to 50 <br />percent clay, 30 to 60 percent silt, and 5 to 30 percent sand with less <br />than 15 percent of the matrix material being fine sand or coarser. This <br />horizon has some oriented clay films on surfaces of peds and in root <br />channels. The Cca horizon has hue of 2.SY through 7.SYR. It is <br />moderately or strongly alkaline (pH 8.0 to 8.6) and has about b to 14 <br />percent calcium carbonate equivalent. In some pedons this horizon is <br />• absent and the solum rests directly on the shale. <br />Competing Series: These are the Brolliar, Buckskin, Cimazron, Gothic, <br />Heath, Jerry, Judq, Little Horn, Mayoworth, Segal, Sessions, Trout <br />Creek, and Youman series. Brolliaz, Judy, and Little Horn soils have <br />lithic contacts at depths of 20 to 40 inches. Buckskin, Cimarron, Gothic, <br />Heath, Jerry, Segal, and Sessions soils have no bedrock within a depth of <br />40 inches. Mayoworth soils aze noncalcazeous throughout. Trout Creek <br />soils have calcic horizons. Youman soils have carbonates leached to <br />depths greater than 60 inches and have hue of 5YR or 2.5YR in the B2t <br />horizon. <br />Geographic Setting: Owen Creek soils aze on hill crests, ridges, and <br />mountain sideslopes at elevations generally in excess of 8,000 feet. <br />Slope gradients range from 2 to 20 percent. The soils formed in <br />calcareous sediments weathered from calcazeous shales and interbedded <br />n <br />LJ <br />I-26 <br />