Profile Number:  71    Series: BLUE RIVER                    

Location: SW1/4,SW1/4,SEC.13(15S,5E),NEAR UNIT L504, H.J. ANDREWS E.F.

Classification: ANDIC DYSTROCHREPTS, MEDIAL-SKELETAL, FRIGID                
         Slope: 80 %
        Aspect: NE 
     Elevation: 3198 ft.
      Landform: UNEVEN SLOPE                  
      Drainage: WELL DRAINED                  
   Parent Mat.: COLLUVIUM FROM BASIC IGNEOUS ROCKS AND VOLCANIC ASH                             
    Vegetation: TSHE-ABAM/RHMA/BENE ASSOCIATION                             
   Description: BROWN- SOIL EF3 IN THESIS 8-73           

   (Physical and chemical data listed below profile description)

O11  1.5 - 1 in.     Twigs, wood, cones, needles, etc. (L).

O12  1 - 0 in.       Partly decomposed twigs, cones, etc. (F).

A1  0 - 4 in.       Dark grayish brown (10YR4/2) when dry, with 
                    matrix of dark brown (7.5YR3/2) and mottles 
                    of dark  brown (10YR3/3) when moist gravelly 
                    sandy loam; weak, very fine to fine granular 
                    structure; soft when dry, very friable when 
                    moist, nonsticky and slightly plastic when 
                    wet; 45% gravel; clear and wavy boundary.

B2  4 - 20 in.      Dark yellowish brown (10YR4/4) when dry, dark 
                    yellowish brown (10YR3/4) when moist gravelly 
                    sandy loam; weak, very fine subangular blocky 
                    breaking to granular structure; soft when 
                    dry, friable when moist, nonsticky and 
                    nonplastic when wet; 45% gravel; diffuse and 
                    wavy boundary.

C1  20 - 37 in.     Yellowish brown (10YR5/4) when dry, dark  
                    yellowish brown (10YR3/4) when moist gravelly 
                    sandy loam; massive structure; soft when dry, 
                    friable when moist, nonsticky and nonplastic 
                    when wet; 45% gravel, scattered pockets of 
                    pumice; gradual and wavy boundary.

2C2  37 - 55+ in.   Yellowish brown (10YR5/4) when dry, dark  
                    yellowish brown (10YR3/4) when moist very 
                    cobbly sandy loam; massive structure; friable 
                    when moist, nonsticky and nonplastic when 
                    wet; 65% cobbles and gravel, scattered pumice.


Physical Profile Data

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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
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  A1     0 - 4     0.7   35.5  55.5   9.0                                             
  B2     4 - 20    0.9   38.4  54.0   7.6                                             
  C1    20 - 37    0.9   43.5  49.8   6.7                                             
  2C2   37 - 55+   0.9   38.5  55.8   5.7                                             
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Chemical Profile Data

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Horizon  Depth     Ph     O.M. Total N    P     CEC    K     Ca    Mg    Na    Base Sat.   
          (in)            (%)    (%)    (ppm)  --------------  meq/100g ----------------- 
-----------------------------------------------------------------------------------------
  A1     0 - 4     5.4     8.2   0.15   10.0   25.7   0.5    4.0  0.7   0.2     21
  B2     4 - 20    5.6     4.2   0.09    6.8   19.3   0.2    2.9  0.5   0.2     19
  C1    20 - 37    5.6     2.8   0.08    3.2   18.5   0.3    2.2  0.4   0.3     18
  2C2   37 - 55+   5.7     2.0   0.06    3.6   22.2   0.2    2.5  0.7   0.2     16
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