Profile Number: 83 Series: FRISSELL Location: SE1/4,NW1/4,SEC.34(15S,5E),12M SE NE COR.RS 5, H.J. ANDREWS E.F. Classification: TYPIC HAPLUMBREPTS, COARSE-LOAMY, MIXED, FRIGID Slope: 15 % Aspect: NW Elevation: 2919 ft. Landform: PEDIMENT BACKSLOPE Drainage: WELL DRAINED Parent Mat.: ANDESITIC ALLUVIUM-COLLUVIUM OVER SILTY MATERIAL Vegetation: TSHE-ABAM/RHMA/BENE ASSOCIATION Description: BROWN- REF. STAND 5, PIT 4, IBP INT. REP. 128 7-72 (Physical and chemical data listed below profile description) O11 2.5 - 2 in. Needles, twigs, cones, etc. (L). O12 2 - 0 in. Partly decomposed needles, twigs, etc. (F). A1 0 - 6 in. Matrix of dark brown (7.5YR3/2) and mottles of black (7.5YR2/0) when moist gravelly loam; weak, very fine to fine granular structure; soft when dry, very friable when moist, slightly sticky and slightly plastic when wet; 30% gravel, shot; clear and wavy boundary. A3 6 - 12 in. Dark brown (7.5YR3/2) when moist gravelly loam; weak, very fine granular breaking to subangular blocky structure; very friable when moist, slightly sticky and slightly plastic when wet; 45% gravel, shot; gradual and wavy boundary. B21 12 - 20 in. Matrix of brown (7.5YR4/4) and mottles of yellowish red (5YR4/6) when moist very gravelly loam; weak, very fine to fine subangular blocky breaking to weak, very fine granular structure; very friable when moist, slightly sticky and slightly plastic when wet; 50% gravel, shot; gradual and wavy boundary. B22 20 - 27 in. Matrix of brown (7.5YR4/4) and mottles of yellowish red (5YR4/6) when moist gravelly silt loam; weak, very fine to fine subangular blocky structure; friable when moist, slightly sticky and slightly plastic when wet; 45% gravel, shot; clear and wavy boundary. 2B3 27 - 41 in. Matrix of brown (7.5YR4/4) and mottles of black (7.5YR2/0) when moist silt loam; weak, very fine to fine subangular blocky structure; friable when moist, sticky and plastic when wet; trace of gravel, variegations; gradual and smooth boundary. 2C 41 - 54+ in. Matrix of brown (7.5YR4/4) and mottles of black (7.5YR2/0) when moist silt loam; massive structure; firm when moist, sticky and plastic when wet; no coarse fragments, variegations. Physical Profile Data ----------------------------------------------------------------------------------------- Horizon Depth Density Sand Silt Clay Percolation Moisture Tension (% H2O, dry wt.) (in) (g/cc) (%) (%) (%) (in/hr) 1/3 atm 1 atm 5 atm 15 atm ----------------------------------------------------------------------------------------- A1 0 - 6 0.6 46.5 43.6 9.9 A3 6 - 12 B21 12 - 20 B22 20 - 27 0.8 35.4 54.1 10.5 2B3 27 - 41 2C 41 - 54+ 0.8 27.4 62.1 10.4 ----------------------------------------------------------------------------------------- Chemical Profile Data ----------------------------------------------------------------------------------------- Horizon Depth Ph O.M. Total N P CEC K Ca Mg Na Base Sat. (in) (%) (%) (ppm) -------------- meq/100g ----------------- ----------------------------------------------------------------------------------------- A1 0 - 6 4.9 5.6 0.21 25.0 19.8 0.3 0.5 0.5 A3 6 - 12 5.3 3.9 0.14 20.8 20.7 0.3 0.8 0.4 B21 12 - 20 4.7 3.4 0.12 12.1 21.4 0.2 0.7 0.4 B22 20 - 27 5.4 1.8 0.08 2.1 33.0 0.3 3.2 1.5 2B3 27 - 41 5.6 0.5 0.03 1.5 25.8 0.2 3.2 2.1 2C 41 - 54+ 5.4 0.5 0.02 1.4 32.9 0.2 3.4 2.9 -----------------------------------------------------------------------------------------