2Bt2 90-99+ cm (35-39+ in). YeUowish brown (lOYR 

 5/4) cobbly clay marginal to sandy clay, very pale 

 brown (lOYR 7/3) dry; moderate very fine to fine 

 angular blocky structure; firm (moist), sUghtly 

 sticky and plastic (wet); common thin clay skins on 

 ped and rock faces; few very fine roots restricted to 

 rock faces; noncalcareous; slightly acid; 10 percent 

 angular gravel, 15 percent channery sandstone, and 

 55 percent subrounded cobbles. 



Location: NEVa of NW'/4 of Sec. 32, T. 16 N., R. 12 W. 



Classification: Eutric Glossoboralf, clayey-skeletal, mixed, 

 frigid 



Parent material: Colluvium over glacial till mixed with 



residual sandstone 

 Physiographic position: Side slope about 100 m above a 



stream terrace 

 Elevation: 4,200 feet 

 Slope: 20-25 percent to the SW 



Remarks: High bulk density below 42 cm may restrict 

 water movement. Sandstone flagstones in the 2Bt2 

 horizon could be cut with a spade and broke easily in 

 the hand. Colors are for the moist soil unless otherwise 

 indicated. 



Soil Profile at the Festuca scabrella-F. idahoensis 



Habitat Type Plots 



Oe 3-0 cm (1.2-0 in). 



A 0-19 cm (0-7 in). Black (lOYR 2/1) gravelly silt 



loam, very dark grayish brown (lOYR 3/2) dry; very 

 weak medium crumb and moderate fine to medium 

 subangular blocky structure; very friable to friable 

 (moist), nonsticky and slightly plastic (wet); many 

 very fine and few fine roots; noncalcareous; neutral; 

 45 percent angular to subrounded gravel; clear 

 wavy boundary. 



Bw 19 — 27 cm (7 — 11 in). Very dark grayish brown 



(lOYR 3/2) gravelly loam, brown (lOYR 4.5/3) dry; 

 moderate fine to medium subangular blocky struc- 

 ture breaking to very fine subangular blocks; very 

 friable to friable (moist), slightly sticky and 



slightly plastic (wet); common very fine and few 

 fine roots; noncalcareous; neutral; 45 percent an- 

 gular to subrounded gravel; clear wavy boundary. 



CBw 27-41 cm (11-16 in). Dark grayish brown (lOYR 

 4/2) gravelly loam, brown (lOYR 5/3) dry; moder- 

 ately weak fine crumb and moderately weak fine 

 subangular blocky structure; very friable (moist), 

 slightly sticky and slightly plastic (wet); many 

 very fine and common fine roots; noncalcareous; 

 neutral; 45 percent angular to subrounded gravel; 

 clear irregular boundary. 



Ckl 41-73 cm (16-29 in). Dark grayish brown (lOYR 

 4/2) gravelly sUt loam, brown (lOYR 5/3) dry; very 

 weak medium crumb structure breaking to single 

 grain; very friable (moist), slightly sticky and 

 slightly plastic (wet); many very fine and common 

 fine roots; bulk of soil noncalcareous with a few 

 white flecks strongly effervescent; neutral; 35 per- 

 cent angular to subrounded gravel; abrupt wavy 

 boundary. 



Ck2 73-95+ cm (29-37+ in). Dark brown (lOYR 4/3) 

 gravelly loam, brown (lOYR 5.5/3) dry; very weak 

 fine subangular blocky structure breaking to very 

 fine subangular blocks and single grains; friable 

 (moist), slightly sticky and slightly plastic (wet); 

 common very fine and few fine roots; violently ef- 

 fervescent pockets in the soil matrix and white 

 coatings on the bottoms of coarse fragments; 50 

 percent gravel and 10 percent angular cobbles. 



Location: SEVa of SEVa of Sec. 15, T. 15 N., R. 14 W. 



Classification: Typic Haploboroll, loamy-skeletal, mixed, 

 frigid 



Parent material: Glacial till 



Physiographic position: Spur ridge about 50 feet wide, 



with side slopes of about 15 percent 

 Elevation: 4,400 feet 

 Slope: — 2 percent 



Remarks: Colors are for the moist soil unless otherwise 

 indicated. 



38 



