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M2C=Romberg-Crosscan complex, 6 to 25 percent slopes, very <br /> stony <br /> Setting <br /> Landscape position: Canyons, hills, and alluvial fans <br /> Parent material: Kind=colluvium, alluvium, and residuum; <br /> source=sandstone and shale <br /> Native plant community: Pinyon and juniper woodland <br /> Elevation: 5, 400 to 6,800 feet <br /> Mean annual temperature: 50 to 52 degrees F <br /> Mean annual precipitation: 10 to 14 inches <br /> Frost:-free period: 120 to 135 days <br /> Composition <br /> Romberg soil and similar inclusions: 45 percent <br /> Crosscan soil and similar inclusions: 40 percent <br /> Contrasting inclusions: 15 percent <br /> Characteristics of the Romberg Soil <br /> Landscape position: Canyons, hills, and alluvial fans <br /> Slope range: 6 to 25 percent <br /> Parent material: Kind=colluvium and alluvium; <br /> source=sandstone and shale <br /> Typical Profile: <br /> 0 to 2 inches=dark brown very stony loam <br /> 2 to 20 inches=dark brown to light brown very stony clay <br /> loam <br /> 20 to 60 inches=brown very stony clay loam <br /> Soil Properties <br /> Depth class: Very deep <br /> Drainage class: Well drained <br /> Permeability: Moderately slow <br /> Available water capacity: Low <br /> Potential rooting depth: 60 inches or more <br /> Flooding: None <br /> Runoff: Very high <br /> Hazard of water erosion: Severe <br /> Hazard of wind erosion: Slight <br /> Shrink-swell potential: Low <br /> Characteristics of the Crosscan Soil <br /> Landscape position: Canyons and hills <br /> Slope range: 6 to 25 percent <br />