SOIL PROFILE DESCRIPTIONS (con.) 



Unit 21, — Argic Cryoboroll (fine loamy mixed) 



Parent Material: Shale, conglomerate Landform: Residual slope 



Slope: 38 percent, complex, north aspect Erosion: None apparent 



Drainage: Well drained Vegetation: Aspen, grass, forbs 

 Elevation: 7,800 ft. 



Horizon 



Depth 

 (inches) 



Description 



Al 



0-3 



Dark brown (7.5YR 3/2) loam, very dark brown (7.5YR 2/2) moist; 

 moderate very fine granular structure; soft, friable, abundant micro 

 and plentiful fine roots; neutral (pH 7.0); clear smooth boundary. 



A3 



3-11 



Reddish brown (5YR 4/3) loam, dark reddish brown fSYR 3/3) moist; 

 weak medium subangular blocky breaking to moderate very fine granu- 

 lar structure; slightly hard, friable; plentiful micro and medium, abun- 

 dant fine, and few coarse roots; neutral (pH 7.0); clear smooth 

 boundary. 



Bl 



11-25 



Reddish brown (2. SYR 4/4) clay loam, dark reddish brown (2.5YR 

 2/4) moist; moderate medium subangular blocky structure; slightly 

 hard, firm, slightly sticky, sUghtly plastic; common moderately thick 

 clay films on ped faces and in pores; plentiful coarse and medium and 

 few fine roots; common fine pores; neutral (pH 7.0); gradual smooth 

 boundary. 



B21t 



25-45 



Reddish brown (2. SYR 4/4) clay loam, dark reddish brown (2.5YR 

 2/4) moist; strong medium subangular blocky structure; hard, firm, 

 sticky, plastic; many moderately thick clay films on ped faces; plenti- 

 ful medium and few fine and coarse roots; common medium pores; 

 neutral (pH 7.0); gradual smooth boundary. 







rtea ( lUxt 4/ D j sanay ciay loam , aarK reu (lurv o/o } moisi, weaK 

 coarse subangular blocky structure; slightly hard, firm, sticky, 

 plastic; few thin clay films as bridging; few fine roots; common 

 medium pores; neutral (pH 7.0); gradual smooth boundary. 



llB23t 



64-76 



Red (lOR 5/6) gravelly clay loam, red (lOR 4/6) moist; weak coarse 

 angular blocky structure; hard, firm, sticky, plastic; few thin clay 

 films on ped faces, in pores, and as bridging; very few fine roots; 

 common fine pores; 25 percent angular gravel; neutral fpH 7.0); 

 gradual wavy boundary. 



38 



