LOCATION DEMONTREVILLE MN+WIEstablished Series
TAXONOMIC CLASS: Loamy, mixed, superactive, frigid Arenic Hapludalfs
TYPICAL PEDON: DeMontreville loamy fine sand with a 2 percent plane south-facing slope on a glacial moraine in an alfalfa field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 7 inches; dark grayish brown (10YR 4/2) loamy fine sand; light brownish gray (10YR 6/2) dry; weak fine subangular blocky structure; very friable; 2 to 5 percent gravel; slightly acid; abrupt smooth boundary. (5 to 8 inches thick)
E1--7 to 11 inches; brown (10YR 4/3) loamy fine sand, very pale brown (10YR 7/3) dry; weak fine subangular blocky structure; very friable; about 5 percent gravel; moderately acid; clear irregular boundary.
E2--11 to 15 inches; brown (10YR 4/3) loamy sand, pale brown (10YR 6/3) dry; weak medium subangular blocky structure; friable; about 10 percent gravel; moderately acid; clear wavy boundary. (0 to 22 inches thick, combined thickness)
BE--15 to 24 inches; brown (10YR 5/3) loamy sand; moderate medium subangular blocky structure; friable; about 8 percent gravel; moderately acid; clear irregular boundary. (0 to 15 inches thick)
2Bt1--24 to 29 inches; dark reddish brown (5YR 3/4) sandy loam; moderate medium subangular blocky structure; firm; few faint clay films along vertical cleavages; about 10 percent gravel; moderately acid; clear wavy boundary.
2Bt2--29 to 41 inches; dark reddish brown (5YR 3/4) sandy loam; moderate medium subangular blocky structure; firm; few faint clay films along vertical cleavages; about 10 percent gravel; slightly acid; clear wavy boundary. (9 to 22 inches, combined thickness)
2C--41 to 60 inches; dark reddish brown (5YR 3/4) sandy loam; massive; firm; about 15 percent gravel; slightly acid.
TYPE LOCATION: Washington County, Minnesota. About one mile east northeast of Willernie; 750 feet south and 2,010 feet west of the northeast corner, sec. 28, T. 30 N., R. 21 W.
RANGE IN CHARACTERISTICS: The thickness of the solum ranges from 30 to 50 inches and depth to the glacial till ranges from 20 to 40 inches. Free carbonates are absent to depths of 60 inches or more. The A and B horizons contain 0 to 10 percent gravel by volume and the 2B and 2C horizons contain from 8 to 20 percent gravel and cobbles of mixed lithology. The 2B and 2C horizons have moist bulk density ranging from 1.65 to 1.75 gm/cc. The soil moisture control section is not dry in all parts for 20 to 35 consecutive days during the 120 days following the summer solstice.
The A or Ap horizons have hue of 10YR, value of 2 to 4, and chroma of 1 to 3. The E horizon has hue of 10YR or 7.5YR, value of 3 to 5, and chroma of 2 to 4. The A and E horizons typically are loamy fine sand or loamy sand but sand or fine sand are in the range. They are strongly acid through neutral.
Some pedons have a Bw horizon in the upper sediment instead of an E horizon. It has hue of 10YR or 7.5YR, value of 3 to 5, and chroma of 3 to 6. It is loamy sand or loamy coarse sand but coarse sand, sand, fine sand, and loamy fine sand are in the range. It is strongly acid through neutral.
Some pedons have B/E or 2 B/E horizons, but the E part comprises less than 15 percent of the horizon.
The 2Bt horizon has hue of 7.5YR or 5YR, value of 3 to 5, and chroma of 3 to 6. In some pedons mottles with chroma of 2 are below the upper 10 inches of the argillic horizon. It is sandy loam, sandy clay loam, loam, or fine sandy loam. It averages between 6 to 18 percent clay, but parts may range up to 22 percent. It is moderately acid or slightly acid. It has few through many clay films.
The 2C horizon has hue of 7.5YR or 5YR, value of 3 or 4, and chroma of 4 to 6. It is sandy loam, coarse sandy loam, loamy coarse sand or their gravelly analogues. It is moderately acid through neutral.
COMPETING SERIES: These are the Andrusia (T), Braham, Captom (T), Cutaway, Escanaba, Haskill Pomroy and Redeye soils. Andrusia soils have friable argillic horizons and are formed in glacial outwash sediments. Braham soils have hue of 10YR and have more than 18 percent clay in the argillic horizon. Captom soils are dry in the soil moisture control section for more than 35 consecutive days during the 120 days following the summer solstice. Cutaway soils have 18 to 35 percent clay in the argillic horizon, hues yellower than 7.5YR and also have bisequum development. Escanaba soils have Bs horizons and are dominated by fine sands throughout. Haskill soils have sand in the lower part of the series control section and below the argillic horizon. Pomroy and Redeye soils have argillic horizons that formed in dense till which have bulk densities greater than 1.8. Redby soils also have hue of 10YR or yellower and free carbonates within 60 inches.
GEOGRAPHIC SETTING: DeMontreville soils are on summits and upper side slopes of knolls on glacial moraines. Slopes are plane or convex and slope gradients range from 1 to 45 percent. These soils formed in a moderately thick sandy mantle of aeolian or lacustrine or outwash sediments and loamy glacial till of the Late Wisconsinan Age. Mean annual temperature ranges from 37 to 45 degrees F. Mean annual precipitation ranges from about 24 to 33 inches. Frost-free days range from 90 to 150. Elevation above sea level ranges from 670 to 1450 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: DeMontreville soils are commonly adjacent to the Cushing, Kingsley, and Mahtomedi soils. The well drained Cushing and Kingsley soils occupy similar landscape positions and formed entirely from loamy glacial till. The excessively drained Mahtomedi soils formed in sandy sediments and are on similar landscapes.
DRAINAGE AND PERMEABILITY: Well drained and moderately well drained. Medium or slow runoff. Rapid permeability in the upper sandy mantle and moderately slow permeability in the underlying horizons. These soils have a perched water table above the horizons in glacial till for short periods during wet seasons.
USE AND VEGETATION: About one-half of this soil is cleared and used for pasture or cropped to corn, small grains, or hay. The remainder is in forest or wooded pasture. Native vegetation was deciduous forest, mainly oaks.
DISTRIBUTION AND EXTENT: Central and east-central Minnesota. Moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Washington and Ramsey Counties, Minnesota, 1978.
REMARKS: Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from the surface to a depth of 15 inches (Ap, E1, and E2 horizons); argillic horizons - the zone from 24 to 41 inches (2Bt1 and 2Bt2 horizons); arenic subgroup - sandy textures in upper 24 inches.