LOCATION DUNKLEBER MTEstablished Series
TAXONOMIC CLASS: Euic Typic Cryofibrists
TYPICAL PEDON: Dunkleber mucky peat, 0 to 2 percent slopes, ponded, in rangeland (colors are for wet soil unless otherwise noted).
Oi1--0 to 12 inches; black (10YR 2/1) mucky peat, dark gray (10YR 4/1) dry; about 80 percent fiber and raw herbaceous plant material, 70 percent rubbed; massive; nonsticky and nonplastic; slightly acid (pH 6.2); clear smooth boundary. (0 to 14 inches thick)
Oi2--12 to 28 inches; very dark gray (10YR 3/1) mucky peat, dark gray (10YR 4/1) dry; about 85 percent fiber, 80 percent rubbed; massive; nonsticky and nonplastic; slightly acid (pH 6.2); clear smooth boundary. (10 to 16 inches thick)
Oi3--28 to 38 inches; black (10YR 2/1) mucky peat, dark gray (10YR 4/1) dry; about 80 percent fiber, 75 percent rubbed; massive; nonsticky and nonplastic; slightly acid (pH 6.4); clear wavy boundary. (6 to 10 inches thick)
Oi4--38 to 44 inches; black (10YR 2/1) mucky peat, dark gray (10YR 4/1) dry; about 80 percent fiber, 75 percent rubbed; massive; nonsticky and nonplastic; slightly acid. (pH 6.4); clear smooth boundary. (4 to 10 inches thick)
Oi5--44 to 60 inches; black (10YR 2/1) mucky peat, very dark gray (10YR 3/1) dry; about 80 percent fiber, 75 percent rubbed; massive; nonsticky and nonplastic; slightly acid (pH 6.4).
TYPE LOCATION: Deer Lodge County, Montana; 1,300 feet west and 1,500 feet north of the SE corner of sec. 19, T. 5 N., R. 14 W.
RANGE IN CHARACTERISTICS:
Soil temperature - 36 to 41 degrees F.
Depth to seasonal high water table - ponded to 6 inches.
Thickness of organic material - greater than 52 inches.
Oi1 horizon - Value: 2 or 3 moist, 3, 4, or 5 dry
Chroma: 1 or 2
Fiber content: 80 to 90 percent unrubbed, 60 to 75 percent rubbed
Reaction: pH 5.2 to 6.5
Oi2 horizon - Value: 2, 3, or 4 moist; 3, 4, or 5 dry
Chroma: 1 or 2
Fiber content: 80 to 90 percent unrubbed, 70 to 80 percent rubbed
Reaction: pH 5.2 to 6.5
Oi3 horizon - Value: 2 or 3 moist; 2, 3, 4, or 5 dry
Chroma: 1 or 2
Fiber content: 80 to 90 percent unrubbed, 70 to 80 percent rubbed
Reaction: pH 5.2 to 6.5
Oi4 horizon - Value: 2 or 3 moist, 4 or 5 dry
Chroma: 1 or 2
Fiber content: 80 to 90 percent unrubbed, 70 to 80 percent rubbed
Reaction: pH 5.6 to 6.5
Oi5 horizon - Value: 2 or 3 moist, 3 or 4 dry
Chroma: 1 or 2
Rock fragments: 0 to 35 percent pebbles
Reaction: pH 5.6 to 6.5
COMPETING SERIES:
There are no competing series.
GEOGRAPHIC SETTING:
Landform - closed depressions; drainageways; floodplains.
Elevation - 4,400 to 8,800 feet.
Slope - 0 to 2 percent.
Parent material organic material.
Climate - long, cold winters; cool, moist springs; short, cool summers.
Mean annual precipitation - 14 to 22 inches.
Mean annual air temperature - 34 to 39 degrees F.
Frost-free period - 30 to 70 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Foolhen and Mooseflat series. Foolhen and Mooseflat soils are mineral soils.
DRAINAGE AND PERMEABILITY: Very poorly drained, moderately rapid permeability.
USE AND VEGETATION: Dunkleber soils are primarily used for rangeland. The potential native vegetation is mainly sedges, rushes, willows, and shrubby cinquefoil
DISTRIBUTION AND EXTENT: Dunkleber soils are of small extent in southwestern Montana.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Granite County, Montana, 1994.
REMARKS: Soil interpretation record: MT1520. Diagnostic horizons and features recognized in this pedon are: a histic epipedon from the soil surface to 60 inches (Oi1, Oi2, Oi3, Oi4, Oi5 horizons). Dunkleber soils have a cryic temperature regime and an aquic moisture regime.