LOCATION SCOBA WIEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Haplic Glossudalfs
TYPICAL PEDON: Scoba sandy loam - on a 1 percent slope in a cultivated field at an elevation of about 1,130 feet. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 9 inches; dark brown (10YR 3/3) sandy loam, pale brown (10YR 6/3) dry; moderate medium subangular blocky structure; friable; common fine roots; about 1 percent gravel; moderately acid; abrupt smooth boundary. (6 to 12 inches thick)
E/B--9 to 16 inches; about 70 percent brown (10YR 5/3) sandy loam (E), very pale brown (10YR 7/3) dry; moderate medium platy structure; friable; extends as tongues into and surrounds remnants of dark yellowish brown (10YR 4/4) sandy loam (Bt); moderate medium subangular blocky structure; friable; few fine distinct brown (7.5YR 4/3) clay films on faces of peds; few fine roots; about 1 percent gravel; moderately acid; clear wavy boundary. (0 to 15 inches thick)
B/E--16 to 20 inches; about 70 percent dark yellowish brown (10YR 4/4) sandy loam (Bt); moderate medium subangular blocky structure; friable; few distinct brown (7.5YR 4/3) clay films on faces of peds; penetrated by tongues of brown (10YR 5/3) sandy loam (E), very pale brown (10YR 7/3) dry; moderate medium platy structure; friable; few fine roots; about 3 percent gravel; moderately acid; clear wavy boundary. (Glossic horizon - 2 to 20 inches thick)
Bt1--20 to 26 inches; brown (7.5YR 4/4) sandy loam; moderate medium subangular blocky structure; friable; few fine roots; few faint dark brown (7.5YR 3/4) clay films on faces of peds; common fine and medium distinct strong brown (7.5YR 5/6) masses of iron accumulation; about 3 percent gravel; strongly acid; clear wavy boundary. (0 to 10 inches thick)
2Bt2--26 to 31 inches; brown (7.5YR 4/4) loamy sand; moderate coarse subangular blocky structure; friable; few fine roots; common faint dark brown (7.5YR 3/4) clay bridges between mineral grains; common medium distinct strong brown (7.5YR 5/6) masses of iron accumulation; about 10 percent gravel; strongly acid; abrupt wavy boundary. (0 to 8 inches thick.)
2C--31 to 60 inches; strong brown (7.5YR 5/6) stratified sand and gravelly sand; single grain; loose; about 20 percent gravel as an average; strongly acid.
TYPE LOCATION: Barron County, Wisconsin; about 3 miles east and 3 miles north of Chetek; 600 feet north and 300 feet east of the southwest corner of sec. 2, T. 33 N., R. 10 W.; USGS Moose Ear Lake, WI quad.; lat. 45 degrees, 21', 58" N.; long. 91 degrees, 34', 49" W.
RANGE IN CHARACTERISTICS: Thickness of the loamy mantle and depth to sandy outwash range from 20 to 40 inches. The particle-size control averages 8 to 17 percent clay and 50 percent or more fine sand or coarser. Volume of rock fragments averages less than 35 percent in the particle-size control section. Volume of gravel ranges from 0 to 35 percent in the loamy mantle but is typically less than 15 percent. Volume of gravel ranges from 3 to 45 percent as a weighted average in the sandy outwash, but ranges from 0 to 60 percent in individual strata. Volume of cobbles ranges from 0 to 5 percent in the loamy mantle and from 0 to 15 percent in the sandy outwash. Reaction typically ranges from very strongly acid to slightly acid in the solum but ranges to neutral in the upper part, where the soil is limed. Reaction ranges from very strongly acid to neutral in the substratum. Redox accumulations are within a depth of 40 inches. These are due to periods of near-saturation and reduction caused by restricted internal drainage associated with contrasting porosity at the sandy outwash contact.
The Ap horizon has value of 2 to 4 and chroma of 2 or 3. Value dry is 6 or more. Uncultivated pedons have an A horizon with hue of 10YR, value of 2 or 3, and chroma of 1 or 2.
The E horizon has hue of 7.5YR or 10YR, value of 4 to 6, and chroma of 2 or 3. Colors of 4/3 and 5/3 have value dry of 7 or more. Texture is sandy loam, fine sandy loam, loam, or the gravelly analogs.
Scoba soils have a glossic horizon (E/B or B/E horizons, or both). The E part has colors and textures like the E horizon described above. The Bt part has hue of 5YR, 7.5YR, or 10YR; value of 4 or 5; and chroma of 4 or 6. It is sandy loam, fine sandy loam, loam, or the gravelly analogs.
The Bt horizon has color and texture like the Bt part described above.
The 2Bt horizon has hue of 5YR, 7.5YR, or 10YR; value of 4 to 6; and chroma of 3 to 6. It is loamy sand, loamy coarse sand, or the gravelly or very gravelly analogs.
The 2C horizon has color like the 2Bt horizon above. It is typically stratified sand, coarse sand, or the gravelly or very gravelly analogs but some pedons have thin subhorizons of loamy sand, loamy coarse sand, or the gravelly or very gravelly analogs.
COMPETING SERIES: These are the Alban, Amery, Arland, Kennan, Langlade, Marathon, Mcginn, Rosholt, and Santiago series. Closely related are the Anigon, Antigo, Brill, Halder, Oesterle, Sconsin, and Scott Lake series. None of the competing soils have a zone of near-saturation with redox features within the soil. In addition, Alban soils have stratified loamy and sandy lacustrine deposits within 40 inches. Arland soils have a paralithic contact at 20 to 40 inches. Amery, Kennan, and Marathon soils do not average more than 85 percent sand in the fine-earth fraction within a depth of 40 inches. Langlade soils are 40 to 60 inches thick to sandy outwash with more than 85 percent sand in the fine earth fraction. Anigon and Brill soils are fine-silty over sandy or sandy-skeletal and Anigon soils do not have redox features. Antigo and Sconsin soils are coarse-loamy over sandy or sandy-skeletal and Antigo soils do not have redox features. Halder and Oesterle soils have saturation and redox depletions in the upper 10 inches of the argillic horizon and Halder soils are fine-loamy over sandy or sandy-skeletal.
GEOGRAPHIC SETTING: Scoba soils are on outwash plains, glacial drainageways, stream terraces, glacial lake basins, and outwash areas on moraines. Slopes range from 0 to 6 percent. These soils formed mostly in loamy alluvium 20 to 40 inches thick and in the underlying stratified sandy outwash. Mean annual precipitation ranges from 28 to 33 inches. Mean annual temperature ranges from 39 to 45 degrees F. The frost free period ranges from about 120 to 135 days. Elevation ranges from 800 to 1950 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Minocqua, Oesterle and Rosholt soils. The well drained Rosholt soils are in landscape positions similar to those of Scoba soils where there is no zone of near-saturation. The somewhat poorly drained Oesterle soils, and the poorly drained Minocqua soils form a drainage sequence in lower landscape positions where there is an apparent seasonal high water table.
DRAINAGE AND PERMEABILITY: Moderately well drained. Surface runoff is slow or moderate. Permeability is moderate in the loamy mantle and rapid or very rapid in the sandy outwash. These soils have redox features above the sandy outwash contact at a depth of 1.5 to 3.5 feet. It also has an apparent water table below 40 inches from March through June. The apparent water table within 40 inches has a duration of less than one month in normal years.
USE AND VEGETATION: Some areas are used for cropland or pastureland. Common crops are corn, small grain, and hay. Some areas are used for woodland. Native vegetation is hardwood forest with scattered conifers. Common trees are
sugar maple, white ash, American basswood, northern red oak, eastern white pine, quaking aspen, big tooth aspen, yellow birch, and black cherry.
DISTRIBUTION AND EXTENT: Northern Wisconsin. These soils are of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota.
SERIES ESTABLISHED: Barron County, Wisconsin, 1993.
REMARKS: Diagnostic horizons recognized in this pedon are: ochric epipedon - 0 to 16 inches (Ap, E/B); glossic horizon - 9 to 20 inches (E/B, B/E); argillic horizon - 16 to 31 inches (B/E, Bt1, 2Bt2).
ADDITIONAL DATA: Soil Interpretation Record - WI0525.