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Routt Series - Contd. <br />• <br />B23t 44-60"--Light yellowish brawn (lOYR 6/4) heavy silty clay <br />Loam, dark yellowish brown (lOYR 4/4) moist; moderate <br />medium and fine subangular blocky structure; hard, very <br />firm, very sticky, very plastic; neutral. <br />Range in Characteristics: Thickness of the mollic epipedon ranges from <br />17 to 30 inches. An A2 horizon may be present in some pedons, ranging in <br />thickness from 2 to 10 inches. The argillic horizon ranges from 20 to 40 <br />inches in thickness, and often extends beyond 60 inches. <br />A horizons have values of 3 or 4 dry, 2 or 3 moist, and chrome of 1 <br />through 3. The B horizons have hues of SYR through lOYR, value of 4 <br />through 6, 3 through 5 moist, and chrome of 2 through 4. The C horizons, <br />when present, have hues of 7.SYR or lOYR, values of 5 or 6 dry, 4 through <br />• 6 moist, and chromes of 3 or 4. Reaction is neutral through mildly <br />alkaline. <br />Silas Series (55) <br />The Silas series is a member of the fine loamy, mixed family of <br />Cumulic Cryoborolls. <br />Typical Pedon: Silas loam <br />All 0- 7"-Very dark grayish brown (lOYR 3/2) sandy loam, very <br />dark brown (lOYR 2/2) moist; weak medium subangular blocky <br />parting to moderate fine granular structure; soft, very <br />• <br />