LOCATION EVERTS MNEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Cumulic Hapludolls
TYPICAL PEDON: Everts loam on a 3 percent concave footslope in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; black (10YR 2/1) loam, very dark gray (10YR 3/1) dry; weak fine subangular blocky structure; friable; neutral; abrupt smooth boundary.
A--8 to 30 inches; black (10YR 2/1) loam, very dark gray (10YR 3/1) dry; weak medium subangular blocky structure; friable; neutral; clear smooth boundary. (combined thickness of the A horizons is 24 to 48 inches)
AB--30 to 38 inches; very dark grayish brown (10YR 3/2) loam, dark grayish brown (10YR 4/2) dry; weak fine subangular blocky structure; friable; neutral; clear smooth boundary. (0 to 10 inches thick)
Bw1--38 to 49 inches; dark brown (10YR 4/3) loam; weak fine subangular blocky structure; friable; neutral; gradual smooth boundary.
Bw2--49 to 54 inches; dark yellowish brown (10YR 4/4) sandy loam; weak fine subangular blocky structure; friable; neutral; gradual smooth boundary. (combined thickness of the Bw horizons is 4 to 25 inches)
BC-- 54 to 58 inches; yellowish brown (10YR 5/4) gravelly coarse sandy loam; single grained; loose; about 18 percent gravel; slightly alkaline; gradual smooth boundary.
2C-- 58 to 80 inches; yellowish brown (10YR 5/4) gravelly coarse sand; single grained; loose; about 18 percent gravel; slightly effervescent; slightly alkaline.
TYPE LOCATION: Otter Tail County, about 704 feet west and 2200 feet north of the southeast corner, sec. 10, T. 134 N., R. 41 W. USGS Phelps, Minnesota quadrangle, latitude 46 degrees 25 minutes 57 seconds N, longitude 95 degrees 49 minutes 26 seconds W.
RANGE IN CHARACTERISTICS: The mollic epipedon ranges from 24 to 48 inches in thickness and has fine strata. Depth to free carbonates is 24 to 80 inches or more. The depth to coarse textured material ranges from 40 to 55 inches. The control section has more than 18 to 24 percent clay and from 30 to about 65 percent fine sand and coarser. Pedons commonly are free of rock fragments in the loamy mantle but may have as much as 5 percent, by volume. The volume of rock fragments in the C horizon ranges from 0 to 35 percent. Some pedons have an accumulation of clay in the subsoil but have less than a 1.2 B/A clay ratio.
The A horizon has hue of 10YR value of 2 or 3 and chroma of 1 through 3. It is typically loam or sandy loam but includes silt loam in some pedons. It is slightly acid or neutral.
The Bw horizon has hue of 10YR or 2.5Y, value of 3 to 6, and chroma of 4 to 6. It is loam or sandy loam. It is slightly acid to slightly alkaline. Some pedons have a Bt horizon.
Some pedons have a 2Bw horizon.
The BC horizon has hue of 10YR or 2.5Y, value of 3 to 6 and chroma of 4 to 6. It is sandy loam, loamy sand, or sand and their gravelly analogues. It is neutral to moderately alkaline.
The 2C horizon has hue of 10YR or 2.5Y, value of 4 to 6 and chroma of 4 to 6. It is sand, coarse sand, loamy coarse sand or their gravelly analogues. It is slightly alkaline or moderately alkaline.
COMPETING SERIES: These are the Darnen, Frolic, La Prairie and Southhaven series. The Darnen soils do not have coarse textured material above a depth of 60 inches. The Frolic La Prairie and Southhaven soils have saturation in the lower third of the series control section.
GEOGRAPHIC SETTING: These soils are on nearly level to gently sloping foot slopes or toe slopes on outwash plains, stream terraces and collapsed outwash in morainic areas.. Slope gradients range from 0 to 6 percent. These soils formed in loamy colluvial sediments overlying coarse textured outwash sediment. The mean annual air temperature ranges from 38 to 45 degrees F. The mean annual precipitation ranges from 22 to 29 inches. The frost-free days range from 120 to 160 days. Elevation above sea level is 990 to 1950 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the somewhat excessively drained Arvilla, Dorset and Renshaw soils and the excessively drained Salida and Sandberg soils. These soils are higher lying on backslopes, shoulder and summit positions.
DRAINAGE AND PERMEABILITY: Well drained. Permeability is moderate in the upper part and rapid or very rapid in the lower part. Surface runoff is medium. Depth to an apparent seasonal water table is greater than 6 feet.
USE AND VEGETATION: Many areas are cropped to corn, soybeans and small grains. Some areas are in pasture and some areas are in native grasses. Native vegetation is tall grass prairie.
DISTRIBUTION AND EXTENT: Western Minnesota and eastern South Dakota.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Swift County, Minnesota, 2000.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon - the zone from the surface of the soil to a depth of 38 inches (Ap, A, and AB horizons); Cambic horizons 38 to 54 inches; Cumulic based on colluvium having fine strata from periodic sediment moving downslope with rainfall events. Often the color of the upper sediment is lighter than the original surface due to deposition; udic moisture regime.