Profile Number:  72    Series: TIDBITS                       

Location: NW1/4,NE1/4,SEC.24(15S,5E)400M SW JUNC.1501&G, H.J. ANDREWS E.F.

Classification: DYSTRIC CRYANDEPTS, MEDIAL-SKELETAL, FRIGID                 
         Slope: 25 %
        Aspect: NE 
     Elevation: 3706 ft.
      Landform: SIDESLOPE OF A RIDGE SADDLE   
      Drainage: WELL DRAINED                  
   Parent Mat.: COLLUVIUM AND RESIDUUM FROM BASIC IGNEOUS ROCKS AND VOLCANIC ASH                
    Vegetation: TSHE-ABAM/RHMA/BENE ASSOCIATION                             
   Description: BROWN- SOIL EF4 IN THESIS 8-73           

   (Physical and chemical data listed below profile description)

O11  2 - 1.5 in.     Needles, twigs, cones, leaves, etc. (L).

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

A1  0 - 8 in.       Grayish brown (10YR5/2) when dry, very dark 
                    grayish brown (10YR3/2) when moist gravelly 
                    sandy loam; weak, fine granular structure; 
                    very friable when moist, slightly sticky and 
                    slightly plastic when wet; 35% gravel; 
                    gradual and wavy boundary.

B2  8 - 22 in.      Grayish brown (10YR5/2) when dry, very dark 
                    grayish brown (10YR3/2) when moist gravelly 
                    sandy loam; weak, medium subangular blocky 
                    breaking to weak, fine granular structure; 
                    friable when moist, slightly sticky and 
                    slightly plastic when wet; 35% gravel  and 
                    cobbles, few pumice grains; clear and smooth 
                    boundary.

2C  22 - 39+ in.    Light brownish gray (2.5Y6/2) when dry, with 
                    matrix of dark gray (10YR4/1) and mottles of 
                    very dark grayish brown (10YR3/2) when moist 
                    very gravelly clay loam; massive structure; 
                    friable when moist, sticky and plastic when 
                    wet; 80% highly weathered bedrock.


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     0.7   36.4  51.8  11.8                                             
  B2     8 - 22    0.9   38.0  52.3   9.7                                             
  2C    22 - 39+   0.9   19.3  66.3  14.4                                             
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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     5.2     6.2   0.12    5.5   21.0   0.3    2.4  0.4   0.2     16
  B2     8 - 22    5.4     3.3   0.09    3.2   16.0   0.2    1.3  0.3   0.1     12
  2C    22 - 39+   5.1     1.3   0.04    0.7   15.1   0.2    2.7  0.8   0.2     26
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