LOCATION PINELAKE MNEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Typic Argiaquolls
TYPICAL PEDON: Pinelake sandy loam with a 1 percent plane slope on an outwash plain in a cultivated field. (Colors are for moist soil unless otherwise stated).
Ap--0 to 12 inches; black (10YR 2/1) sandy loam; dark gray (10YR 4/1) dry; weak fine and medium subangular blocky structure; friable; few fine and medium roots throughout; 2 percent gravel; neutral; abrupt smooth boundary. (7 to 12 inches thick).
Btg1--12 to 15 inches; grayish brown (2.5Y 5/2) coarse sandy loam; weak fine and medium subangular blocky structure; friable; common fine prominent strong brown (7.5YR 4/6) Fe concentrations; few very fine and fine roots throughout; few distinct olive gray (5Y 4/2) clay films on faces of peds; 2 percent gravel; neutral; clear smooth boundary.
Btg2--15 to 30 inches; dark grayish brown (2.5Y 4/2) coarse sandy loam; moderate fine and medium subangular blocky structure; friable; common fine faint dark yellowish brown (2.5Y 6/2) Fe depletions and few fine prominent light olive brown (2.5Y 5/6) Fe concentrations; common distinct dark olive gray (5Y 3/2) discontinuous clay films on faces of peds; 2 percent gravel; neutral; clear wavy boundary. (Combined thickness of the Btg horizons is 6 to 22 inches)
2Btg--30 to 35 inches; grayish brown (2.5Y 5/2) loamy coarse sand; weak medium subangular blocky structure; very friable; many medium prominent yellowish brown (10YR 5/6) Fe concentrations; common distinct olive gray (5Y 4/2) clay bridging between sand grains; 2 percent gravel; neutral; clear wavy boundary. (0 to 12 inches thick)
2Cg--35 to 80 inches; light brownish gray (2.5Y 6/2) coarse sand; single grain; loose; common medium and coarse brownish yellow (10YR 6/6) Fe concentrations; 6 percent gravel; very slightly effervescent, slightly alkaline.
TYPE LOCATION: Otter Tail County, Minnesota; about 2 miles east of Amor; 1900 feet west and 300 feet north of the southeast corner of section 15, T.134 N., R.40 W.; USGS Walker Lake Quadrangle; lat. 46 degrees 24 minutes 50 seconds N. and long. 95 degrees 42 minutes 40 seconds W., NAD27.
RANGE IN CHARACTERISTICS: The depth to free carbonates ranges from 24 to 50 inches. The thickness of the loamy mantle ranges from 20 to 40 inches. The mollic epipedon ranges from 8 to 20 inches in thickness. Rock fragments range from 0 to 15 percent in the upper mantle and from 2 to 35 percent in the lower material. Rock fragments are of mixed lithology and are typically pebble size. A till substratum phase is recognized where glacial till occurs below depths of 60 inches.
The Ap and A horizon have hue of 10YR or 2.5Y or are neutral, value of 2 or 3 and chroma of 0 through 2. They are sandy loam, fine sandy loam or loam. They are slightly acid or neutral.
Some pedons have a thin E horizon.
The Btg horizon has a hue of 10YR, 2.5Y or 5Y, value of 3 through 5 and chroma of 1 through 3. It is coarse sandy loam, sandy loam or loam, but includes thin subhorizons of sandy clay loam. The Btg horizon averages from 12 to 18 percent clay and 50 to 70 percent sand. It is slightly acid or neutral.
The 2Btg horizon has a hue of 10YR, 2.5Y or 5Y, value of 4 or 5 and chroma of 1 to 3. It is loamy sand, loamy coarse sand, sand, or their gravelly analogues. It is slightly acid or neutral.
Some pedons have 2Bg or 2Bkg horizons
The 2Cg horizon has a hue of 2.5Y or 5Y, value of 5 to 7 and chroma of 1 or 2. It is loamy sand, loamy coarse sand, sand, coarse sand or their gravelly analogues. It is slightly alkaline or moderately alkaline.
Where glacial till occurs below depths of 60 inches, a till substratum phase is recognized. It has a 3Cg horizon with hue of 2.5Y or 5Y, value of 4 to 6 and chroma of 1 or 2. It is sandy loam, fine sandy loam or loam and includes thin subhorizons of clay loam or sandy clay loam. It is slightly alkaline or moderately alkaline.
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING: Pinelake soils are on nearly level slightly concave areas on glacial outwash plains, lake terraces and moraines. They formed in a loamy mantle and underlying sandy and gravelly outwash sediment of Late Wisconsin age. The loamy substratum phase is underlain by loamy glacial till at depths below 60 inches. Slopes range from 0 to 2 percent. Mean annual air temperature is 38 to 45 degrees F. Mean annual precipitation ranges from 23 to 28 inches. Annual frost free days range from 90 to 140 days. Elevation ranges from 1100 to 1500 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Abbeylake, Almora, Corliss, Dorset, Forada, Leafriver, Nidaros, Oakcreek, Oylen, and Verndale soils. The well drained Almora, Dorset, and Verndale soils and excessively drained Abbeylake and Corliss soils are on the higher positions on the landscape. The very poorly drained Forada and Leafriver soils are in shallow depressions and swales. The very poorly drained Nidaros are in depressions. The moderately well drained Oakcreek and Oylen soils are on slightly higher landscape positions.
DRAINAGE AND PERMEABILITY: Poorly drained. Runoff is slow. Permeability is moderately rapid in the upper part and rapid in the lower part. The till substratum phase has moderate permeability below depths of 60 inches. An apparent water table ranges from a depth of 0.5 to 1.5 feet during November to June in most years.
USE AND VEGETATION: Most areas are cropland or pasture with scattered areas in woods. Native vegetation is mixed grasses and deciduous species as elm, aspen, black ash and basswood.
DISTRIBUTION AND EXTENT: West Central Minnesota. This soil is of minor extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Otter Tail County, Minnesota, 1996.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon -- zone from the surface to a depth of 12 inches (Ap); Argillic horizon -- the zone from 12 to 35 inches (Btg1, Btg2 and 2Btg horizons); aquic moisture regime--based on low chroma matrix and redox concentrations below the mollic epipedon.
ADDITIONAL DATA: Refer to Minnesota Agricultural Experiment CFC number 4611 for lab results of a representative pedon. Soil Interpretation Record numbers MN0759 and MN0760-loamy substratum phase.