Profile Number:  74    Series: TIDBITS                       

Location: NW1/4,NE1/4,SEC.30(15S,6E)400M NE NE COR.L702, H.J. ANDREWS E.F.

Classification: DYSTRIC CRYANDEPTS, MEDIAL-SKELETAL, FRIGID                 
         Slope: 60 %
        Aspect: NW 
     Elevation: 3346 ft.
      Landform: UNEVEN SLOPE                  
      Drainage: WELL DRAINED                  
   Parent Mat.: ALLUVIUM-COLLUVIUM FROM BASIC IGNEOUS ROCKS AND VOLCANIC ASH                    
    Vegetation: TSHE-ABAM/RHMA/BENE ASSOCIATION                             
   Description: BROWN- SOIL EF6 IN THESIS 8-73           

   (Physical and chemical data listed below profile description)

O11  1 - .5 in.      Needles, twigs, cones, etc. (L).

O12  .5 - 0 in.      Partly decomposed needles, twigs, etc. (F).

A1  0 - 3 in.       Brown (10YR5/3) when dry, dark brown 
                    (7.5YR3/2) when moist gravelly sandy loam; 
                    weak, very fine to fine granular structure; 
                    soft when dry, very friable when moist, 
                    nonsticky and slightly plastic when wet; 30% 
                    gravel; clear and wavy boundary.

A3  3 - 13 in.      Dark yellowish brown (10YR4/4) when dry, with 
                    matrix of dark brown (7.5YR3/2) and mottles 
                    of dark  brown (10YR3/3) when moist gravelly 
                    sandy loam; weak, very fine to fine granular 
                    structure; soft when dry, friable when moist, 
                    slightly sticky and slightly plastic when 
                    wet; 40% gravel and cobbles,very few 
                    pumice,few charcoal; gradual and wavy boundary.

B2  13 - 23 in.     Dark yellowish brown (10YR4/4) when dry, with 
                    matrix of dark brown (7.5YR3/2) and mottles 
                    of dark  brown (10YR3/3) when moist gravelly 
                    sandy loam; weak, very fine to fine 
                    subangular blocky structure; soft when dry, 
                    friable when moist, slightly sticky and 
                    slightly plastic when wet; 40% gravel; 
                    diffuse and wavy boundary.

C1  23 - 41 in.     Dark yellowish brown (10YR4/4) when dry, dark 
                    brown (7.5YR3/4) when moist gravelly sandy 
                    loam; massive structure; friable when moist, 
                    slightly sticky and slightly plastic when 
                    wet; 35% gravel  and cobbles, few pumice 
                    grains; diffuse and wavy boundary.

2C2  41 - 54+ in.   Yellowish brown (10YR5/4) when dry, dark 
                    brown (7.5YR3/4) when moist very cobbly sandy 
                    loam; massive structure; friable when moist, 
                    slightly sticky and slightly plastic when 
                    wet; 55% cobbles and gravel, few pumice 
                    grains.


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 - 3     0.7   45.9  45.2   8.9                                             
  A3     3 - 13    0.7   48.4  45.0   6.6                                             
  B2    13 - 23    0.9   49.0  45.8   5.2                                             
  C1    23 - 41    0.9   48.8  46.3   4.9                                             
  2C2   41 - 54+   0.9   49.2  46.0   4.8                                             
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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 - 3     5.8     7.5   0.18    5.9   29.0   0.9   11.2  1.1   0.2     46
  A3     3 - 13    5.8     4.4   0.13    1.8   24.8   0.6    5.9  1.1   0.2     31
  B2    13 - 23    6.1     2.6   0.10    2.7   24.6   0.5    3.6  0.9   0.2     21
  C1    23 - 41    5.8     2.4   0.09    2.3   22.4   0.4    2.9  0.8   0.2     19
  2C2   41 - 54+   5.8     1.9   0.07    2.3   24.2   0.4    4.7  1.8   0.2     30
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