LOCATION TETONVIEW MT
Established Series
Rev. BDD-JAL-EMM
09/2014
TETONVIEW SERIES
The Tetonview series consists of very deep, poorly drained soils that formed in calcareous alluvium. These soils are on dissected alluvial fans, stream terraces, glacial outwash plains, flood plains and closed depressions. Slopes are 0 to 4 percent. Mean annual precipitation is about 14 inches, and mean annual temperature is about 42 degrees F.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Aeric Calciaquolls
TYPICAL PEDON: Tetonview loam, 0 to 2 percent slopes, irrigated native grass hay (colors are for moist soil unless otherwise noted).
Oi--0 to 2 inches; partially decomposed fibers and roots of sedges and rushes. (1 to 4 inches thick)
A1--2 to 9 inches; black (10YR 2/1) loam, dark gray (10YR 4/1) dry; weak fine granular structure; slightly hard, very friable, moderately sticky and slightly plastic; many fine and medium roots; common fine irregular tubular pores; slightly effervescent; slightly alkaline (pH 7.8); clear smooth boundary.
A2--9 to 14 inches; very dark gray (10YR 3/1) clay loam, gray (10YR 5/1) dry; moderate medium granular structure; slightly hard, friable, moderately sticky and moderately plastic; common fine roots; common fine irregular tubular pores; strongly effervescent; moderately alkaline (pH 8.0); gradual wavy boundary. (Combined thickness of A horizons is 7 to 14 inches.)
Bkg1--14 to 28 inches; grayish brown (10YR 5/2) clay loam, light gray (10YR 7/2) dry, few fine distinct yellowish brown (10YR 5/4) redox concentrations; moderate medium granular structure; hard, firm, moderately sticky and moderately plastic; common very fine roots; common medium masses of lime; violently effervescent; moderately alkaline (pH 8.0); gradual wavy boundary. (7 to 16 inches thick)
Bkg2--28 to 38 inches; grayish brown (10YR 5/2) clay loam, light gray (10YR 7/2) dry, common fine distinct yellowish brown (10YR 5/4) redox concentrations; massive; hard, firm, moderately sticky and moderately plastic; few very fine roots; few medium masses of lime; violently effervescent; moderately alkaline (pH 8.2); gradual wavy boundary. (5 to 20 inches thick)
Bkg3--38 to 60 inches; grayish brown (10YR 5/2) gravelly clay loam, light gray (10YR 7/2) dry, common medium prominent yellowish brown (10YR 5/4) and dark yellowish brown (10YR 4/4) redox concentrations; massive; very hard, firm, moderately sticky and moderately plastic; 15 percent rounded gravel; few fine masses of lime; continuous faint lime coating on surface of gravel; violently effervescent; moderately alkaline (pH 8.2).
TYPE LOCATION: Teton County, Montana; 2,500 feet south and 1,440 feet west of the NE corner of sec. 22, T. 25 N., R. 6 W.
RANGE IN CHARACTERISTICS:
Soil temperature - 41 to 47 degrees F.
Moisture control section - between 4 and 12 inches.
Depth to seasonal water table - 1 to 2 feet.
Depth to calcic horizon - 7 to 16 inches.
Soil phases - loam, saline, and drained.
Mollic epipedon thickness - 7 to 23 inches. The mollic epipedon may extend into the calcic horizon.
A BCkg or Cg horizon is present in some pedons.
Oi horizon - mat of organic and fibrous materials. The Oi or Oe horizons vary from 1 to 4 inches thick and have less than 8 percent organic carbon.
A1 horizon
Hue - 10YR or 2.5Y
Value - 3, 4 or 5 dry, 2 or 3 moist
Chroma - 1 or 2, moist or dry
Texture - loam, silt loam, silty clay loam
Clay content - 18 to 35 percent
Rock fragments - 0 to 5 percent gravel
Calcium carbonate equivalent - 0 to 15 percent
EC - 0 to 12 mmhos/cm (saline phase 4 to 12 mmhos/cm)
Reaction - pH 6.6 to 8.4
A2 horizon
Hue - 10YR or 2.5Y
Value - 4, 5 or 6 dry, 2 or 3 moist
Chroma - 1 or 2, moist or dry
Texture - loam, clay loam, silt loam
Clay content - 18 to 35 percent
Rock fragments - 0 to 5 percent gravel
Calcium carbonate equivalent - 15 to 35 percent
EC - 0 to 12 mmhos/cm (saline phase 4 to 12 mmhos/cm)
Reaction - pH 7.4 to 8.4
Bkg1 horizon
Value - 5, 6, or 7 dry; 3, 4, 5, or 6 moist
Texture - loam, clay loam, silt loam, silty clay loam
Clay content - 18 to 35 percent
Redoximorphic features - none to common, faint to prominent redox concentrations
Rock fragments - 0 to 10 percent gravel
Calcium carbonate equivalent - 15 to 35 percent
EC - 0 to 8 mmhos/cm (saline phase 4 to 8 mmhos/cm)
Reaction - pH 7.9 to 8.4
Bkg2 horizon
Hue - 10YR, 2.5Y, or 5Y
Value - 6 or 7 dry; 4, 5, or 6 moist
Texture - loam, clay loam, silt loam, silty clay loam
Clay content - 18 to 35 percent
Redoximorphic features - none to common, faint to prominent redox concentrations.
Rock fragments - 0 to 15 percent gravel
Calcium carbonate equivalent - 15 to 35 percent
EC - 0 to 8 mmhos/cm (saline phase is 4 to 8 mmhos/cm)
Reaction - pH 7.9 to 8.4
Bkg3 horizon
Hue - 10YR, 2.5Y, or 5Y
Value - 6 or 7 dry; 4, 5, or 6 moist
Texture - loam, clay loam, sandy clay loam, silt loam, silty clay loam
Clay content - 18 to 30 percent
Redoximorphic features - none to common, faint to many redox concentrations.
Rock fragments - to 35 percent--0 to 5 percent cobbles, 5 to 30 percent gravel
Calcium carbonate equivalent - 15 to 30 percent
EC - 0 to 8 mmhos/cm (saline phase is 4 to 8 mmhos/cm)
Reaction - pH 7.9 to 8.4
COMPETING SERIES:
Antler (ND) - does not have an Oi horizon; formed in lake sediments 24 to 34 inches deep over a discontinuity of till.
Gilby (ND) - has less than 18 percent clay in the upper 20 to 40 inches of lacustrine sediments over a discontinuity of firm till.
Hamerly (ND) - formed in till; does not have an Oi horizon of decomposed roots and fibers from sedges.
Moritz (SD) - does not have an O horizon; is somewhat poorly drained; receives 20 to 24 inches precipitation.
GEOGRAPHIC SETTING:
Landform - dissected alluvial fans; stream terraces; glacial outwash plains; flood plains; closed depressions.
Elevation - 3,600 to 6,000 feet.
Slope - 0 to 4 percent.
Parent material - calcareous alluvium derived from limestone, dolomite, sandstone, or shale.
Mean annual temperature - 39 to 45 degrees F.
Mean annual precipitation - 10 to 19 inches.
Frost-free period - 70 to 115 days.
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND PERMEABILITY: Poorly drained; moderately slow permeability.
USE AND VEGETATION: Tetonview soils are used for range and irrigated hayland and pasture. Potential native vegetation is northern reedgrass, Kentucky bluegrass, sedges, bulrushes, and rushes.
DISTRIBUTION AND EXTENT: Tetonview soils are moderately extensive. In Montana they are mainly along the eastern front and in intermountain valleys of the northern Rocky Mountains. MLRAs 43B, 44B, 46 and 58A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Choteau-Conrad Area, parts of Teton and Pondera Counties, Montana, 1991.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Organic surface layer (Oi horizon)
Mollic epipedon - the zone from 2 to 14 inches (A1, A2 horizons)
Calcic horizon - the zone from 14 to 60 inches (Bkg1, Bkg2, Bkg3 horizons)
Particle-size control section - the zone from 12 to 42 inches (part of the A2, the Bkg1, Bkg2 and part of the Bkg3 horizons)
Tetonview soils have a frigid temperature regime and an aquic moisture regime.
Soil interpretation record: MT0466.
Classification was changed from Typic Calciaquolls to Aeric Calciaquolls in 1993.
National Cooperative Soil Survey
U.S.A.