Profile Number:  73    Series: TIDBITS                       

Location: SE1/4,NW1/4,SEC.24(15S,5E)15M SW SWCOR.RS 18, H.J. ANDREWS E.F.

Classification: DYSTRIC CRYANDEPTS, MEDIAL-SKELETAL, FRIGID                 
         Slope: 45 %
        Aspect: NW 
     Elevation: 3542 ft.
      Landform: ALLUVIAL-COLLUVIAL FAN        
      Drainage: WELL DRAINED                  
   Parent Mat.: ALLUVIUM-COLLUVIUM FROM BASIC IGNEOUS ROCKS                                     
    Vegetation: TSHE-ABAM/RHMA/BENE ASSOCIATION                             
   Description: BROWN- SOIL EF5 IN THESIS 7-72           

   (Physical and chemical data listed below profile description)

O11  2 - 1.5 in.     Leaves, twigs, needles, cones, etc. (L).

O12  1.5 - 0 in.     Partly decomposed leaves, twigs, etc. (F).

A1  0 - 7 in.       Brown (10YR4/3) when dry, very dark brown 
                    (10YR2/2) when moist gravelly silt loam; 
                    moderate, fine granular structure; friable 
                    when moist, slightly sticky and slightly 
                    plastic when wet; 30% gravel; clear and 
                    smooth boundary.

B1  7 - 14 in.      Brown (10YR4/3) when dry, very dark brown 
                    (10YR2/2) when moist gravelly silt loam; 
                    weak, very fine subangular blocky structure; 
                    very friable when moist, slightly sticky and 
                    slightly plastic when wet; 25% gravel; clear 
                    and smooth boundary.

B2  14 - 21 in.     Brown (10YR4/3) when dry, very dark brown 
                    (10YR2/2) when moist gravelly loam; weak, 
                    fine subangular blocky structure; very 
                    friable when moist, slightly sticky and 
                    slightly plastic when wet; 20% gravel; 
                    gradual and smooth boundary.

C1  21 - 28 in.     Brown (10YR4/3) when dry, with matrix of dark 
                    brown (10YR3/3) and mottles of gray (10YR5/1) 
                    when moist gravelly loam; massive structure; 
                    very friable when moist, slightly sticky and 
                    slightly plastic when wet; 30% gravel; clear 
                    and wavy boundary.

2C2  28 - 41+ in.   Matrix of gray (10YR5/1)  and mottles of 
                    brown (7.5YR4/2) when moist 95% saprolite, 5% 
                    gray fine earth.


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 - 7     0.9   38.2  53.6   8.2                                             
  B1     7 - 14    0.7   42.9  50.6   6.5                                             
  B2    14 - 21    1.0   38.8  55.2   6.0                                             
  C1    21 - 28    1.0   37.9  55.7   6.4                                             
  2C2   28 - 41+                                                                      
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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 - 7     5.4     7.5   0.23   17.7   21.0   0.5    5.4  1.1   0.2     26
  B1     7 - 14    5.4     4.2   0.16    7.7   20.8   0.4    4.2  0.8   0.2     21
  B2    14 - 21    5.5     1.9   0.12    3.8   20.4   0.4    4.0  0.6   0.2     20
  C1    21 - 28    5.6     1.8   0.10    1.9   20.4   0.3    3.4  0.9   0.3     19
  2C2   28 - 41+   4.8     1.0   0.04    3.2   24.4   0.2   10.3  2.1   0.3     52
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