SOIL PROFILE DESCRIPTIONS (con.) 



Unit 22. — Typic Cryoboroll (clayey skeletal mixed) 



Parent Material: Mixed siltstone, shale, 



schist, pegmatite 

 Slope: 20 percent, complex northeast aspect 

 Drainage: Well drained 

 Elevation: 7,700 ft. 



Landform: Mudslide or rockslide 

 Erosion: None apparent 

 Vegetation: ''Scrubby" aspen, snowberry, 

 wyethia, tarweed 



Depth 



Horizon (inches) Description 



Al 0-2 Brown (7.5YR 5/2) gravelly light clay loam, dark brown (7. SYR 



4/2) moist; weak fine granular structure; hard, friable, slightly 

 sticky, slightly plastic; very few micro roots; common fine pores; 25 

 percent gravel; slightly acid (pH 6.5); abrupt irregular boundary. 



Bl 2-12 Light reddish brown (5YR 6/3) cobbly clay loam, reddish brovm 



(5YR 5/3) moist; moderate medium subangular blocky structure; 

 hard, firm, sticky, plastic; plentiful fine and few medium roots; 25 

 percent angular gravel and cobble; medium acid (pH 6.0); gradual 

 irregular boundary. 



B21t 12-24 Light reddish brown (5YR 6/4) very cobbly clay ; strong medium 



subangular blocky structure; very hard, firm, sticky, plastic; common 

 moderately thick to thin clay films on ped faces; plentiful medium and 

 few fine roots; 65 percent angular cobble; very strongly acid (pH 5.0); 

 gradual irregular boundary. 



B22t 24-35 Reddish yellow (5YR 6/6) very cobbly clay, yellowish red (5YR 5/6) 



moist; moderate fine angular blocky structure; very hard, firm, sticky, 

 plastic; many thick clay films on ped faces and in pores, pressure 

 faces on few peds; very few medium roots; 85 percent angular cobble 

 and stone; very strongly acid (pH 4.5); abrupt irregular boundary. 



C 35+ Well weathered to partially decomposed rock fragments consisting of 



pegmatites, gneiss, and schist in a clayey matrix; no oriented clays; 

 considerable micaceous material in the matrix. 



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