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5/97 <br />103 =Cryoborolls, Cryorthents soils, Rock Outcrop, 25 to 99 percent <br />slopes <br />Additional symbols: 46F, 99, 180 <br />Setting <br />Landform: mountain slopes <br />Elevation: 6,500 to 10,000 feet <br />Air temperature: 37 to 40 degr^es <br />Annual precipitation: 15 to 30 inches <br />Frost-free period: 30 to 55 days <br />Composition <br />Cryoborolls soil and similar inclusions: 0 to 90 percent <br />Cryorthents soil and similar inclusions: 0 to 75 percent <br />Rock Outcrop: 0 to 75 percent <br />Contrasting inclusions: 0 to 15 percent <br />Contrasting Inclusions <br />Foidel soils <br />Routt soils <br />Aaberg soils <br />Waybe soils <br />Somewhat poorly to very poorly drained Aquolls and Aquents soils <br />Typical Profile <br />Cryoborolls <br />Surface layer: <br />0 to 3 inches=very dark grayish brown cobbly loam <br />Subsurface layer: <br />3 to 14 inches=grayish brown cobbly loam <br />Subsoil: <br />14 to 21 inches=light yellowish brown cobbly silt loam <br />21 to 29 inches=light yellowish brown very cobbly silty clay loam <br />29 to 33 inches=yellowish brown extremely cobbly silt loam <br />Substratum: <br />33 to 45 inches=variegated light yellowish brown, light brownish gray, <br />and grayish brown extremely cobbly loam <br />Bedrock: <br />45 inches=hard sandstone <br />Soil Properties and Qualities <br />Cryoborolls <br />Parent material: colluvium, alluvium, and residuum derived from <br />sandstone or shale <br />Position on landform: backslopes <br />Depth class: shallow to very deep <br />Drainage class: well drained <br />