Profile Number:  38    Series: SOIL FROM ANDESITE COLLUVIUM  

Location: BELOW MIDDLE ROAD WS 3, H.J. ANDREWS E.F.

Classification: TYPIC DYSTROCHREPTS, LOAMY-SKELETAL, MIXED, MESIC           
         Slope: 30 %
        Aspect: N  
     Elevation: 2350 ft.
      Landform: DOWNWARD-TRENDING RIDGE       
      Drainage: WELL DRAINED                  
   Parent Mat.: ANDESITE COLLUVIUM                                                              
    Vegetation: TSHE/RHMA/GASH ASSOCIATION                                  
   Description: DYRNESS- SAMPLED PROFILE 13 7-63           

   (Physical and chemical data listed below profile description)

A1  0 - 6 in.       Yellowish brown (10YR5/4) when dry, dark  
                    brown (10YR3/3) when moist stony loam; 
                    moderate, medium granular structure; slightly 
                    hard when dry, friable when moist, slightly 
                    sticky and slightly plastic when wet; some 
                    shot.

AC  6 - 15 in.      Brown (10YR5/3) when dry, brown (10YR4/3) 
                    when moist stony loam; moderate, medium 
                    granular structure; slightly hard when dry, 
                    friable when moist, slightly sticky and 
                    slightly plastic when wet; 45% andesite 
                    stones.

C1  15 - 23 in.     Pale brown (10YR6/3) when dry, brown 
                    (10YR4/3) when moist stony loam; massive 
                    structure; soft when dry, friable when moist, 
                    nonsticky and slightly sticky and slightly 
                    plastic when wet; 40% andesite stones.

C2  23 - 40+ in.     Same as C1 but 55% stones.


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 - 6           43.8  53.1  23.1                28.8     25.9    21.4    20.8
  AC     6 - 15          40.4  38.6  21.0                33.8     30.8    22.1    19.4
  C1    15 - 23          40.2  38.8  21.0                33.2     29.4    23.1    18.3
  C2    23 - 40+         46.3  38.3  15.4                33.3     29.0    22.6    18.3
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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 - 6     5.1    5.39                                                    
  AC     6 - 15    5.2    3.57                                                    
  C1    15 - 23    5.3    1.31                                                    
  C2    23 - 40+   5.3    1.08                                                    
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