Profile Number:  43    Series: SOIL FROM ANDESITE COLLUVIUM  

Location: JUST ABOVE MIDDLE TRAIL WS 2, H.J. ANDREWS E.F.

Classification: TYPIC HAPLUMBREPTS, FINE-LOAMY, MIXED, MESIC                
         Slope: 80 %
        Aspect: NW 
     Elevation: 2400 ft.
      Landform: SMOOTH SLOPE                  
      Drainage: WELL DRAINED                  
   Parent Mat.: ANDESITE COLLUVIUM                                                              
    Vegetation: TSHE/RHMA/BENE ASSOCIATION                                  
   Description: DYRNESS- SAMPLED PROFILE 24 6-65           

   (Physical and chemical data listed below profile description)

O1  1 - 0 in.        Leaves, twigs, needles, etc.

A1  0 - 8 in.       Very dark brown (10YR2/2) when moist shotty 
                    stony sandy clay loam; moderate, fine 
                    granular structure; friable when moist, 
                    slightly sticky and slightly plastic when 
                    wet; 40% stones, 20% gravel, 25% shot; clear 
                    and wavy boundary.

AC  8 - 19 in.      Dark  brown (10YR3/3) when moist stony loam; 
                    moderate, fine to medium granular structure; 
                    friable when moist, slightly sticky and 
                    slightly plastic when wet; 40% cobbles, 20% 
                    gravel, some shot; clear and wavy boundary.

C  19 - 36 in.      Brown (10YR4/3) when moist gravelly clay 
                    loam; weak, medium subangular blocky breaking 
                    to weak, medium granular structure; very 
                    friable when moist, sticky and slightly 
                    plastic when wet; 25% gravel; clear and 
                    irregular boundary.

2C  36 - 46 in.     Matrix of dark yellowish brown (10YR4/4)  and 
                    mottles of olive brown (2.5Y4/6) when moist 
                    gravelly loam; weak, medium subangular blocky 
                    structure; very friable when moist, sticky 
                    and slightly plastic when wet; 25% gravel, 
                    common pumice flecks; clear and wavy boundary.

3C  46 - 82+ in.    Olive brown (2.5Y4/6) when moist silt loam; 
                    moderate, fine to medium subangular blocky 
                    structure; friable when moist, sticky and 
                    plastic when wet; 10% 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 - 8           50.0  27.9  22.2                38.2     33.9    29.4    23.7
  AC     8 - 19          41.4  36.5  22.2                34.9     30.8    23.4    20.2
  C     19 - 36          24.3  45.6  28.6                40.0     36.2    27.6    18.9
  2C    36 - 46          32.7  44.3  23.1                41.0     35.7    28.0    20.9
  3C    46 - 82+         21.7  51.8  26.5                43.5     38.5    32.3    26.3
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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 - 8     6.0    8.38                                                    
  AC     8 - 19    6.1    3.60                                                    
  C     19 - 36    5.8    2.01                                                    
  2C    36 - 46    5.7    1.24                                                    
  3C    46 - 82+   5.5    0.65                                                    
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