LOCATION REDLODGE MTEstablished Series
TAXONOMIC CLASS: Fine, mixed, superactive Cumulic Cryaquolls
TYPICAL PEDON: Redlodge clay - meadow grasses. (Colors are for dry soil unless otherwise noted.)
A1--0 to 2 inches; very dark grayish brown (10YR 3/2) clay, black (10YR 2/1) moist; moderate medium and fine blocky structure parting to moderate medium granular; slightly hard, friable, sticky and plastic; few fine and many very fine roots; few fine pores; slightly alkaline (pH 7.8); gradual boundary. (2 to 3 inches thick)
A2--2 to 10 inches; very dark gray (N 3/0) clay, black (10YR 2/1) moist; strong medium prismatic structure parting to moderate medium and fine blocky; slightly hard, friable, sticky and plastic; many very fine roots; common very fine pores; slightly alkaline (pH 7.8); gradual boundary. (8 to 10 inches thick)
A3--10 to 16 inches; very dark gray (N 3/0) clay, very dark gray (10YR 3/1) with black (10YR 2/1) coatings, moist; moderate medium and fine blocky structure; slightly hard, friable, sticky and plastic; common very fine roots and pores; prominent organic stained film on peds; slightly alkaline (pH 7.8); clear boundary. (6 to 8 inches thick)
ACg--16 to 25 inches; olive gray (5Y 5/2) and gray (N 6/0) clay, dark olive gray (5Y 3/2) and gray (N 5/0) moist; strong medium and fine blocky structure; slightly hard, friable, sticky and plastic; few very fine roots; common very fine pores; moderately alkaline (pH 8.0); clear wavy boundary. (9 to 12 inches thick)
Ckg--25 to 36 inches; gray (N 6/0) mottled with olive yellow (5Y 6/6), gray, yellow, brown and olive clay, gray (5Y 5/1) mottled with gray (5Y 6/1), olive (5Y 4/4) and very dark gray (5Y 3/1) moist; massive; slightly hard, friable, very sticky and plastic; many fine masses of lime; strongly effervescent; moderately alkaline (pH 8.4); clear wavy boundary. (0 to 30 inches thick)
Abg1--36 to 42 inches; dark gray (N 4/0) mottled with olive yellow (5Y 6/6) clay, dark gray (N 4/0) mottled with olive (5Y 4/4), very dark gray (N 3/0) and gray (N 5/0) moist; massive; slightly hard, friable, very sticky and very plastic; common fine masses of lime; strongly effervescent; moderately alkaline (pH 8.0); gradual boundary. (6 to 8 inches thick)
Abg2--42 to 60 inches; gray (2.5Y 6/1) and olive yellow (2.5Y 6/6) clay, gray (5Y 5/1) mottled with olive (5Y 4/4), gray (5Y 6/1), dark gray (5Y 4/1) and very dark gray (5Y 3/1) moist; massive; slightly hard, friable, sticky and plastic; strongly effervescent; common fine masses of lime; moderately alkaline (pH 8.0).
TYPE LOCATION: Carbon County, Montana; 1,000 feet south and 300 feet west of NE corner of sec. 14, T.6S., R.l9E.
RANGE IN CHARACTERISTICS:
Soil temperature - 36 to 45 degrees F.
Moisture control section - between 4 and 12 inches.
Depth to Abg1 horizon - 30 to more than 60 inches.
Depth to seasonal high water table - 0 to 24 inches.
Oa horizon present in some pedons: 0 to 5 inches thick
A horizons - Hue: 2.5Y to 2.5YR
Value: 3 or 4 dry, 2 or 3 moist.
Chroma: 0 to 2.
Texture: Clay, silty clay, silty clay loam or clay loam.
Clay content: 30 to 60 percent.
Reaction: pH 6.1 to 8.4
ACg horizon - Texture: clay, silty clay loam or clay loam
Clay content: 35 to 60 percent
Reaction: 6.1 to 8.4
Ckg or Cg horizon - Value: 4 to 6 dry, 3 to 5 moist
Chroma: 0 to 6
Texture: clay, silty clay loam or clay loam
Clay content: 35 to 60 percent
Calcium carbonate equivalent: 0 to 5 percent
Reaction: pH 6.1 to 8.4
Abg horizons - Texture: clay, silty clay loam or clay loam
Clay content: 35 to 60 percent
Calcium carbonate equivalent: 0 to 5 percent
Reaction: pH 6.1 to 8.4
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING:
Landform - drainageways and closed depressions.
Elevation - 4,000 to 7,500 feet.
Slope- 0 to 15 percent
Parent material - alluvium.
Climate - long cold winters, cool moist springs; warm summers.
Mean annual precipitation - 15 to 30 inches.
Mean annual temperature - 34 to 43 degrees F.
Frost-free period - 50 to 90 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Adel and Bearmouth series. Adel series are pachic and are on alluvial fans, stream terraces, hills, drainageways and swales. Bearmouth soils are sandy-skeletal and are on flood plains, stream terraces and fans.
DRAINAGE AND PERMEABILITY: Poorly drained; slow permeability.
USE AND VEGETATION: Meadow of wild hay, timothy, bluegrass, clover and brome.
DISTRIBUTION AND EXTENT: Redlodge series is inextensive but is widely distributed in narrow stream valleys in southwestern and south-central Montana. MLRA 44.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Carbon County (Bridger Area), Montana, 1971.