Profile Number:  46    Series: SOIL FROM ANDESITE COLLUVIUM  

Location: ABOVE MIDDLE TRAIL WS 2, NEAR WS 1 DIVIDE, H.J. ANDREWS E.F.

Classification: TYPIC HAPLUMBREPTS, LOAMY-SKELETAL, MIXED, MESIC            
         Slope: 80 %
        Aspect: NE 
     Elevation: 2100 ft.
      Landform: SMOOTH SLOPE                  
      Drainage: WELL DRAINED                  
   Parent Mat.: ANDESITE COLLUVIUM                                                              
    Vegetation: TSHE/ACCI/BENE ASSOCIATION                                  
   Description: DYRNESS- SAMPLED PROFILE 34 7-63           

   (Physical and chemical data listed below profile description)

A1  0 - 4 in.       Very dark brown (10YR2/2) when moist stony 
                    sandy loam; weak, fine to medium granular 
                    structure; very friable when moist, nonsticky 
                    and nonplastic when wet; 80% andesite gravel 
                    and cobbles; clear and broken boundary.

AC  4 - 18 in.      Very dark grayish brown (10YR3/2) when moist 
                    stony loam; weak, fine to medium granular 
                    structure; very friable when moist, slightly 
                    sticky and nonplastic when wet; 80% andesite 
                    fragments; diffuse and broken boundary.

C1  18 - 36 in.     Dark grayish brown (10YR4/2) when moist stony 
                    loam; weak, fine to medium granular 
                    structure; very friable when moist, sticky 
                    and slightly plastic when wet; 80% andesite 
                    fragments; clear and wavy boundary.

C2  36 - 50+ in.    Brownish gray (2.5Y5/2) when moist silt loam; 
                    massive structure; friable when moist, 
                    slightly sticky and slightly plastic when 
                    wet; 25% very  weathered andesite gravel  and 
                    cobbles.


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
-----------------------------------------------------------------------------------------
  A1     0 - 4           59.4  22.5  18.0                35.3     31.2    26.1    26.6
  AC     4 - 18          48.1  30.5  21.5                30.3     27.6    20.1    20.7
  C1    18 - 36          33.1  39.8  24.9                28.4     25.3    18.7    18.0
  C2    36 - 50+         26.9  52.5  20.7                41.3     36.8    28.6    27.0
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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     5.3   19.80 0.2661  82.18  45.95                               
  AC     4 - 18    6.0    6.90 0.1425  15.69  30.25                               
  C1    18 - 36    5.8    1.74 0.0682   2.49  25.00                               
  C2    36 - 50+   5.6    0.72 0.0235   2.49  48.50                               
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