LOCATION STINNETT WIEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Aquic Glossudalfs
TYPICAL PEDON: Stinnett silt loam, on a northwest-facing, 2 percent slope, in a hardwood forest, at an elevation of about 1240 feet. (Colors are for moist soil unless otherwise stated.)
A--0 to 4 inches; very dark gray (10YR 3/1) silt loam, dark grayish brown (10YR 4/2) dry; strong coarse and medium granular structure; friable; many fine and very fine and common medium and coarse roots; 1 percent gravel and 5 percent cobbles; very strongly acid; clear wavy boundary. (1 to 5 inches thick)
E--4 to 7 inches; dark gray (10YR 4/1) silt, light gray (10YR 7/1) dry; moderate fine and medium platy structure; friable; common fine and very fine and few medium roots; many fine vesicular pores; 1 percent gravel; very strongly acid; clear wavy boundary. (0 to 8 inches thick)
E/B--7 to 18 inches; 80 percent dark grayish brown (10YR 4/2) silt(E), light gray (10YR 7/2) dry; weak medium platy structure; friable; extends as tongues into and surrounds remnants of dark yellowish brown (10YR 4/4) silt loam (B); weak coarse subangular blocky structure; friable; few very fine, fine, medium, and coarse roots throughout; many fine vesicular pores; few distinct dark brown (7.5YR 3/4) clay films on faces of peds; few fine prominent strong brown (7.5YR 5/6) masses of iron accumulation in the matrix; few medium distinct grayish brown (10YR 5/2) iron depletions in the matrix; 1 percent gravel; very strongly acid; clear smooth boundary. (o to 20 inches thick)
B/E--18 to 29 inches; 55 percent brown (7.5YR 4/4) silt loam (Bt); weak coarse subangular blocky structure; friable; few distinct dark brown (7.5YR 3/4) clay films on faces of peds; prnrtrated by tongues of grayish brown (10YR 5/2) silt loam (E), light gray (10YR 7/2) dry; moderate medium platy structure; friable; few very fine, fine, medium, and coarse roots; many fine vesicular pores; few fine prominent strong brown (7.5YR 5/6) masses of iron accumulation in the matrix; common medium distinct grayish brown (10YR 5/2) iron depletions in the matrix; 1 percent gravel; very strongly acid; abrupt wavy boundary. (Glossic horizon -4 to 25 inches thick)
2Bt1--29 to 34 inches; brown (7.5YR 4/4) loam; moderate coarse platy structure parting to fine subangular structure; friable; few medium roots; common faint dark brown (7.5YR 3/4) clay films on faces of peds; ; common coarse prominent grayish brown (10YR 5/2) iron depletions in the matrix; 3 percent gravel; very strongly acid; clear wavy boundary.
2Bt2--34 to 41 inches; brown (7.5YR 4/4) sandy loam; weak coarse and medium subangular blocky structure; friable; few medium roots; few distinct brown (7.5YR 4/2) clay films on faces of peds; common coarse prominent strong brown (7.5YR 4/6) masses of iron accumulation in the matrix; common coarse distinct brown (7.5YR 5/2) iron depletions in the matrix; 3 percent gravel; strongly acid; abrupt wavy boundary. (Combined thickness of the 2Bt horizon ranges from 9 to 15 inches thick)
3C--41 to 55 inches; reddish brown (5YR 4/4) loamy sand with thin strata of sandy loam; massive; friable with slight brittleness; tendency to part along horizontal cleavage planes; 5 percent gravel and 2 percent cobbles; moderately acid; clear smooth boundary. (0 to 15 inches thick)
3Cd--55 to 80 inches; reddish brown (5YR 4/4) loamy sand; massive; firm with slight brittleness, very hard when dry; tendency to part along horizontal planes; 7 percent gravel and 3 percent cobbles; slightly acid.
TYPE LOCATION: Washburn County, Wisconsin; about 30 miles northeast of Spooner; 1,250 feet south and 2,200 feet east of the northwest corner of sec. 9, T. 41 N., R. 10 W.; USGS Stanberry West, Wis. quadrangle; Latitude - 46 degrees, 03 minutes, 15 seconds N. Longitude - 91 degrees, 37 minutes, 32 seconds W. NAD 27.
RANGE IN CHARACTERISTICS: Thickness of the silty mantle ranges from 12 to 36 inches. Depth to the densic contact ranges from 40 to 60 inches. Content of clay averages from 7 to 17 percent in the particle-size control section and the content of sand coarser than very fine averages 15 to 70 percent. Coarse fragments are dominantly of igneous origin and are of mixed lithology. Total volume of rock fragment ranges from 0 to 10 percent in the silty mantle, 0 to 25 percent in the loamy alluvium, and 5 to 35 percent in the dense till. Volume of gravel ranges from 0 to 10 percent in the silty mantle, from 0 to 20 percent in the loamy alluvium, and from 5 to 35 percent in the dense till. Volume of cobbles ranges from 0 to 3 percent in the silty mantle and from 0 to 5 percent in the loamy alluvium and in the dense till. Volume of stones ranges from 0 to 1 percent in the silty mantle and from 0 to 3 percent in the loamy alluvium and in the dense till. Surface stones have coverage ranging from 0 to 3 percent. Reaction ranges from very strongly acid to slightly acid in the silty mantle, but ranges to neutral where the soil is limed. Reaction ranges from very strongly acid to slightly acid in the loamy alluvium and from strongly acid to neutral in the dense till. Masses of iron accumulations are within 20 inches of the mineral soil surface. Iron depletions with chroma of 2 or less are in the upper 10 inches of the argillic horizon. Aquic conditions occur within 20 inches at some time in normal years.
A horizon
Hue: 7.5YR or 10YR
Value: 2 or 3
Chroma: 1 to 2
Texture: silt loam.
Some pedons have an Ap horizon
Hue: 7.5YR or 10YR
Value: 3 or 4
Chroma: 2 or 3
Texture: silt loam.
E horizon
Hue: 7.5YR or 10YR
Value: 4 to 6
Chroma: 1 to 3
(Colors of 4/3, 5/3, or 6/3 have dry value of 7 or more)
Texture: silt or silt loam.
Stinnett soils have a glossic horizon. Horizonation has a wide range depending on the thickness of the silty mantle and degree to which eluviation has occurred. Therefore, there can be E/B, B/E, 2E/B, or 2B/E horizons singularly or in combination.
The E part of the E/B or B/E horizon, has color and texture like the E horizon described above. The Bt part has hue of 5YR, 7.5YR, or 10YR, value of 3 or 4, and chroma of 4 to 6. Texture is silt loam.
Some pedons have a Bt horizon with color and texture like the Bt part described above. Clay content ranges from 8 to 17 percent.
The 2E part of the 2E/B or 2B/E horizon, has color like the E horizon described above. Texture is loam, sandy loam, or the gravelly analogs. The 2Bt part of the 2E/B or 2B/E horizon has hue of 5YR or 7.5YR, value of 3 or 4, and chroma of 4 to 6. Texture is loam, sandy loam, fine sandy loam, or the gravelly analogs. Bulk Density is 1.65 to 1.85 gm/cc.
2Bt horizon
Color, textures and bulk density are like the 2Bt part of the 2E/B or 2B/E horizon described above.
Some pedons have a 3BCd horizon
Hue: 5YR or 7.5YR
Value: 3 or 4
Chroma: 4
Texture: predominantly loamy sand or gravelly loamy sand, but some pedons have sandy loam or gravelly sandy loam textures. Clay content averages from 2 to 7 percent.
Bulk Density: 1.85 to 2.00 gm/cc.
3C horizon
Hue: 5YR or 7.5YR
Value: 3 or 4
Chroma: 4
Texture: predominantly loamy sand or gravelly loamy sand, but some pedons have sandy loam or gravelly sandy loam textures. Clay content averages from 2 to 7 percent.
Bulk Density: 1.65 to 1.85 gm/cc.
3Cd horizon
Hue: 5YR or 7.5YR
Value: 3 or 4
Chroma: 4
Texture: predominantly loamy sand or gravelly loamy sand, but some pedons have sandy loam or gravelly sandy loam textures. Clay content averages from 2 to 7 percent.
Bulk Density: 1.85 to 2.00 gm/cc.
COMPETING SERIES: These are the Bemidji, Brennyville, Fallcreek, Glendenning, Hatley, Magnor, Maincreek, Magroc, Mora, Oesterle, Plover, and Rosy series. Bemidji, Fallcreek, Hatley, Maincreek, Magroc, Oesterle, Plover, and Rosy soils do not have a densic contact with dense sandy or loamy till at depths of 40 to 60 inches. Brennyville, Magnor, and Mora soils average more than 7 percent clay in the dense till. Glendenning soils have a densic contact between 60 and 80 inches.
GEOGRAPHIC SETTING:
Parent material: Formed in loess or silty alluvium over loamy alluvium underlain by dense sandy or loamy lodgement till.
Landform: Disintegration moraines.
Slope: 0 to 4 percent.
Elevation: 1000 to 1500 feet.
Mean annual precipitation: 28 to 33 inches.
Mean annual air temperature: 39 to 45 degrees F.
Frost-free days: 110 to 135 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Beaverbay, Frogcreek, Parkfalls, Stanberry, and Wozny soils. The moderately well drained Beaverbay soils are on more sloping landscape positions. The moderately well drained Frogcreek soils and the very poorly drained Wozny soil form a hydrosequence with Stinnett soils. The somewhat poorly drained Parkfalls soils are on similar landscape positions, but do not have a silty mantle.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. The potential for surface runoff ranges from negligible to low. Permeability is moderate in the silty mantle, moderately slow in the loamy alluvium, and slow in the dense till. Stinnett soils have seasonal saturation perched above the densic contact at a depth of 0.5 to 2.5 feet at some time during the period October to June in normal years.
USE AND VEGETATION: Most areas of this soil are used for woodland or pastureland. Native vegetation is deciduous forest with some conifers. Common trees are red maple, bigtooth aspen, quaking aspen, white ash, balsam fir, and eastern white pine. A few areas are cleared and used for cropland. Common crops are corn, small grain, and hay.
DISTRIBUTION AND EXTENT: Northwestern Wisconsin. LRR K and MLRA 90A. This soil is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota.
SERIES ESTABLISHED: Washburn County, Wisconsin, 2003.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle size control section: 18 to 38 inches;
Ochric epipedon: 0 to 18 inches (A, E, E/B);
Albic horizon: 4 to 7 inches (E), and 7 to 29 inches (E part of E/B and B/E);
Glossic horizon: 7 to 29 inches (E/B, B/E);
Argillic horizon: 18 to 41 inches (B/E, 2Bt1, 2Bt2);
Densic contact: the contact with dense till (3Cd) at 55 inches.
Redoximorphic depletions: reduced iron features in the zone from 7 to 41 inches.
Redoximorphic concentrations: oxidized color features in the zone from 7 to 41 inches.
Lithologic discontinuity: at the upper boundary of the 2Bt1 horizon at 29 inches and at the upper boundary of the 3C horizon at 41 inches.
ADDITIONAL DATA; Refer to soil survey sample number 01WI129023 for NSSL data on the typical pedon.