Profile Number:  45    Series: SOIL FROM ANDESITE COLLUVIUM  

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

Classification:                                                             
         Slope: 80 %
        Aspect: NW 
     Elevation: 2800 ft.
      Landform: SMOOTH SLOPE                  
      Drainage: WELL DRAINED                  
   Parent Mat.: ANDESITE COLLUVIUM                                                              
    Vegetation: TSHE/RHMA/GASH ASSOCIATION                                  
   Description: DYRNESS- SAMPLED PROFILE 32 6-64           

   (Physical and chemical data listed below profile description)

O1  4 - 0 in.        Largely well-rotted wood.

A1  0 - 13 in.      Matrix of yellowish brown (10YR5/4)  and 
                    mottles of dark brown (7.5YR3/2) when moist 
                    stony sandy loam; weak, fine to medium 
                    subangular blocky breaking to weak, fine 
                    granular structure; very friable when moist, 
                    slightly sticky and nonplastic and smeary 
                    when wet; 65% angular andesite fragments; 
                    diffuse and broken boundary.

C  13 - 32 in.      Dark brown (7.5YR3/4) when moist stony loam; 
                    weak, fine to medium granular structure; very 
                    friable when moist, slightly sticky and 
                    nonplastic and smeary when wet; 75% andesite 
                    gravels and cobbles.

2C  32 - 48+ in.    Dark brown (7.5YR3/4) when moist stony silt 
                    loam; weak, fine to medium granular 
                    structure; very friable when moist, slightly 
                    sticky and nonplastic and smeary when wet; 
                    75% andesite fragments.


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 - 13          52.5  31.0  16.5                31.7     26.3    20.0    17.8
  C     13 - 32          47.0  33.6  19.4                35.3     30.5    24.9    24.7
  2C    32 - 48+         32.6  59.7   7.7                40.7     37.3     3.4    26.2
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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 - 13    5.6    8.04                                                    
  C     13 - 32    5.7    5.82                                                    
  2C    32 - 48+   5.7    4.20                                                    
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