Profile Number:  91    Series: TIDBITS                       

Location: SE1/4,SW1/4,SEC.32(15S,5E)10M WNW THERMO.RS 15, H.J. ANDREWS E.F.

Classification: ANDIC HAPLUMBREPTS, MEDIAL-SKELETAL, MESIC                  
         Slope: 65 %
        Aspect: NW 
     Elevation: 2296 ft.
      Landform: PEDIMENT BACKSLOPE            
      Drainage: WELL DRAINED                  
   Parent Mat.: ALLUVIUM-COLLUVIUM FROM ANDESITE                                                
    Vegetation: TSHE/POMU ASSOCIATION                                       
   Description: BROWN- REF. STAND 15, PIT 1, IBP INT. REP. 128 8-72           

   (Physical and chemical data listed below profile description)

O11  1 - 0.5 in.     Leaves, twigs, cones, etc. (L).

O12  0.5 - 0 in.     Partl decomposed leaves, twigs, etc. (F).

A1  0 - 8 in.       Matrix of very dark brown (10YR2/2)  and 
                    mottles of black (7.5YR2/0) when moist 
                    gravelly loam; weak, very fine to fine 
                    granular structure; very friable when moist, 
                    slightly sticky and nonplastic when wet; 40% 
                    gravel and cobbles,common pumice gravel; 
                    gradual and wavy boundary.

B1  8 - 14 in.      Dark brown (7.5YR3/2) when moist gravelly 
                    silty clay loam; weak, fine granular 
                    structure; very friable when moist, slightly 
                    sticky and slightly plastic when wet; 45% 
                    gravel and cobbles,common pumice; gradual and 
                    wavy boundary.

2B2  14 - 23 in.    Dark brown (7.5YR3/2) when moist gravelly 
                    silty clay loam; weak, very fine to fine 
                    subangular blocky structure; very friable 
                    when moist, slightly sticky and slightly 
                    plastic when wet; 45% gravel and cobbles, 
                    abundant  pumice gravel; gradual and wavy 
                    boundary.

2B3  23 - 30 in.    Dark brown (7.5YR3/2) when moist gravelly 
                    silty clay loam; weak, fine subangular blocky 
                    structure; very friable when moist, slightly 
                    sticky and slightly plastic when wet; 45% 
                    gravel and cobbles,common pumice gravel; 
                    clear and wavy boundary.

2C1  30 - 44 in.    Matrix of dark brown (7.5YR3/2)  and mottles 
                    of brown (7.5YR4/4) when moist very gravelly 
                    silt loam; massive structure; very friable 
                    when moist, slightly sticky and slightly 
                    plastic when wet; 65% gravel, stones, and 
                    cobbles, abundant pumice gravel; clear and 
                    smooth boundary.

3C2  44 - 51+ in.   Dark yellowish brown (10YR4/4) when moist 
                    very gravelly silt loam; massive structure; 
                    very friable when moist, slightly sticky and 
                    slightly plastic when wet; 60% gravel, 
                    stones, and cobbles, abundant pumice gravel.


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   43.9  45.6  10.5                                             
  B1     8 - 14                                                                       
  2B2   14 - 23    0.8   36.0  51.9  12.1                                             
  2B3   23 - 30                                                                       
  2C1   30 - 44    0.8   34.9  55.5   9.6                                             
  3C2   44 - 51+                                                                      
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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     5.6     9.9   0.26   53.1   21.7   0.4    3.9  0.4             
  B1     8 - 14    5.8     4.3   0.29   30.2   18.8   0.3    2.7  0.4             
  2B2   14 - 23    5.8     3.4   0.14   17.7   19.7   0.4    1.9  0.5             
  2B3   23 - 30    5.8     2.4   0.18    8.7   20.4   0.4    2.5  0.6             
  2C1   30 - 44    5.7     2.3   0.12    4.1   23.6   0.4    2.1  0.7             
  3C2   44 - 51+   6.2     1.4   0.07    1.4   37.0   0.4    5.6  1.2             
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