LOCATION SCHISLER MNEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Typic Epiaqualfs
TYPICAL PEDON: Schisler silt loam with a plane slope of 1 percent on a lake plain under mixed deciduous and coniferous forest at an elevation of 390 meters. (Colors are for moist soil unless otherwise noted.)
A--0 to 10 cm; black (10YR 2/1) fine sandy loam, dark gray (10YR 4/1) dry; moderate medium granular structure; friable; many fine and medium and common coarse roots; about 4 percent gravel, and 1 percent cobbles; very strongly acid; clear wavy boundary. (3 to 10 cm thick)
Bg--10 to 20 cm; light olive brown (2.5Y 5/3) fine sandy loam, weak medium subangular blocky structure; friable; many fine and medium and common coarse roots; many medium faint grayish brown (2.5Y 5/2) Fe depletions and many medium prominent yellowish brown (10YR 5/8) Fe concentrations; about 2 percent gravel and 1 percent cobbles; very strongly acid; clear wavy boundary. (0 to 15 cm thick)
Bw1--20 to 41 cm; 60 percent brown (7.5YR 4/4) and 40 percent brown (10YR 5/3) sandy loam; weak medium subangular blocky structure; friable; many fine and medium roots and few coarse roots; many medium faint brown (10YR 4/3) and strong brown (7.5YR 5/6) Fe concentrations, common medium prominent dark reddish brown (5YR 3/4) Fe concentrations and common fine prominent light brownish gray (2.5Y 6/2) Fe depletions; about 5 percent gravel; very strongly acid; abrupt wavy boundary.
Bw2--41 to 71 cm; yellowish brown (10YR 5/4) silt loam; weak medium subangular blocky structure; friable; many fine and medium and few coarse roots; many medium distinct yellowish brown (10YR 5/6) and strong brown (7.5YR 4/6) Fe concentrations, few medium distinct grayish brown (10YR 5/2) Fe depletions; about 2 percent gravel; strongly acid; abrupt wavy boundary.
Bw3--71 to 89 cm; dark reddish brown (5YR 3/3) loamy sand; single grain structure; loose; few fine roots; about 1 percent gravel; strongly acid; clear wavy boundary. (combined thickness of the Bg and Bw horizons is 38 to 99 cm)
2Bt1--89 to 122 cm; brown (7.5YR 4/4) loam; moderate medium subangular blocky structure; firm; few fine roots; very few discontinuous faint brown (7.5YR 4/3) clay films in root channels; many medium distinct brown (7.5YR 4/2) Fe depletions and many medium distinct strong brown (7.5YR 5/8) and yellowish red (5YR 4/6) Fe concentrations; about 5 percent gravel; slightly acid; clear wavy boundary.
2Bt2--122 to 152 cm; reddish brown (5YR 4/4) clay loam; strong medium subangular blocky structure; firm; common patchy prominent dark gray (5Y 4/1) clay films in root channels and on faces of peds; common fine prominent yellowish brown (10YR 5/8) Fe concentrations; about 2 percent gravel; slightly acid; diffuse wavy boundary. (Combined thickness of 2Bt horizons is 38 to 76 cm)
2BC--152 to 203 cm; reddish brown (5YR 4/4) clay loam; weak coarse prismatic structure parting to moderate medium subangular blocky; firm; about 2 percent gravel; neutral;
TYPE LOCATION: St. Louis County, Minnesota; about 6 miles south and 3 miles east of the town of Meadowlands; about 300 feet west and 1,200 feet south of the northeast corner of section 24, T. 52 N., R. 19 W.; USGS Brookston NW, Minnesota Quadrangle, latitude 46 degrees 58 minutes 56 seconds N. and longitude 92 degrees 40 minutes 52 seconds W., NAD 27.
RANGE IN CHARACTERISTICS: The depth to fine-loamy till ranges from 51 to 102 cm. The depth to free carbonates is 127 to 203 or more cm. Rock fragment content, by volume, in the upper mantle ranges from 0 to 10 percent with 0 to 10 percent gravel, 0 to 2 percent cobbles and 0 to 1 percent stones. Rock fragment content, by volume, in the till ranges from 2 to 10 percent with 2 to 10 percent gravel, 0 to 2 percent cobbles and 0 to 1 percent stones.
The A horizon has hue of 5YR, 7.5YR and 10YR or is neutral, value of 2 or 3 and chroma of 0 to 3. It is fine sandy loam, silt loam, or loam. It has less than 30 percent very coarse, coarse and medium sand. It is very strongly acid to slightly acid.
Some pedons have an E horizon.
The Bw horizons have hue of 5YR to 2.5Y, value of 3 to 6, and chroma of 3 to 6. It is stratified sandy loam, fine sandy loam, very fine sandy loam, silt loam, loam or loamy sand. It has less than 30 percent very coarse, coarse and medium sand. It is very strongly acid to slightly acid.
The 2Bt horizons have a typical hue of 5YR and ranges to 7.5YR, value of 3 to 5 and chroma of 3 or 4. It is clay loam or loam. It is strongly acid to neutral.
The 2BC horizon has a typical hue of 5YR but includes 2.5YR and 7.5YR, value of 4 to 6 and chroma of 2 to 4. It is loam or clay loam. It is slightly acid to neutral.
The 2C horizon, when present, has a typical hue of 5YR but includes 2.5YR and 7.5YR, value of 4 to 6 and chroma of 2 to 4. It is loam or clay loam. It is slightly acid to slightly alkaline.
COMPETING SERIES: These are the Eldes and Hellwig soils. Eldes soil has do not have stratified sediments in the middle third of the series control section. Hellwig soils average greater than 70 percent sand in the upper mantle.
GEOGRAPHIC SETTING: Schisler soils are on nearly level to slightly convex slopes on lake washed till plains. Slopes range from 0 to 2 percent. Schisler soils formed in 51 to 102 cm of water sorted loamy material over loamy till. The mean annual air temperature is 3 to 5 degrees C. Mean annual precipitation is 500 to 762 mm. Annual frost-free days range from 90 to 120 days. The elevation above sea level ranges from 300 to 400 meters.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Baden Cathro Dusler, Ellsburg, Hellwig, Melrude, and soils. The very poorly drained Baden soils are in shallow depressions, swales and along the edges of depressions of organic soils. The very poorly drained Cathro soils are in depressions. The somewhat poorly drained Dusler soils are on slightly more convex positions and have a thin silty mantle 10 to 51 cm thick. The poorly drained Ellsburg, Hellwig and Melrude soils are on similar landscape positions. Ellsburg soils have a thin silty mantle 10 to 51 cm thick. Hellwig soils formed in 51 to 102 cm of sandy sediment over loamy till. Melrude soils formed in loamy sediments 152 or more cm thick.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Poorly drained. Surface runoff is low. Saturated hydraulic conductivity is 42.34 to 141.14 micrometers per second (6 to 20 inches per hour) in the upper mantle and.42 to 1.41 micrometers per second (0.06 to 0.20 inches per hour) in the lower part. The Schisler soils have perched and apparent seasonal high saturation. In the spring saturation is at the surface in normal years.
USE AND VEGETATION: This soil is forested. The over story vegetation includes quaking aspen, paper birch, and balsam fir. Native vegetation is mixed deciduous and coniferous forest.
DISTRIBUTION AND EXTENT: MLRA-88. Northeastern Minnesota. Moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: St. Louis County (Duluth subset), Minnesota, 2007.
REMARKS: Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from the surface to a depth of 13 cm (A horizon); cambic horizon - the zone from 13 to 89 cm (Bg and Bw horizons); argillic horizon - the zone from 89 cm to 152 cm (2Bt horizons); Aquic subgroup based on a presumed positive test with alpha,alpha dipyridly. This parent material does not show the normal reduced colors normally associated with soil saturation for prolonged periods of time.