LOCATION JUNEAU WI+ILEstablished Series
TAXONOMIC CLASS: Coarse-silty, mixed, superactive, nonacid, mesic Typic Udifluvents
TYPICAL PEDON: Juneau silt loam - on a 1 percent slope in a cultivated field at an elevation of about 1005 feet above mean sea level. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 6 inches; dark grayish brown (10YR 4/2) silt loam, pale brown (10YR 6/3) dry; weak very fine subangular blocky structure; friable; neutral; abrupt smooth boundary. (6 to 10 inches thick)
C1--6 to 20 inches; brown (10YR 4/3) silt loam; massive breaking to weak thin plates along depositional strata; friable; neutral; clear smooth boundary.
C2--20 to 24 inches; very dark grayish brown (10YR 3/2) and dark grayish brown (10YR 4/2) silt loam; massive breaking to weak thick plates along depositional strata; friable; thin discontinuous strata of very fine sand; neutral; clear smooth boundary. (Combined thickness of the C horizon ranges from 14 to 20 inches.)
Ab--24 to 30 inches; very dark grayish brown (10YR 3/2) silt loam; weak medium subangular blocky structure; friable; neutral; abrupt smooth boundary. (0 to 8 inches thick)
Btb1--30 to 40 inches; brown (10YR 4/3) silt loam; moderate fine subangular blocky structure; friable; neutral; few faint clay films on faces of peds; clear smooth boundary. (4 to 12 inches thick)
Btb2--40 to 54 inches; brown (7.5YR 4/2) silty clay loam; weak thick platy structure parting to moderate medium subangular blocky; friable; few faint clay films on faces of peds; common medium prominent strong brown (7.5YR 5/8) masses of iron accumulation in the matrix; common medium faint brown (7.5YR 5/2) iron depletions in the matrix; neutral; clear wavy boundary. (10 to 20 inches thick)
2Btb3--54 to 60 inches; brown (7.5YR 4/4) clay loam; weak medium subangular blocky structure; firm; common distinct dark brown (7.5YR 3/2) organo-clay films on faces of peds; few fine distinct strong brown (7.5YR 5/6) masses of iron accumulation in the matrix; few fine gravel and coarse sand grains; firm; slightly acid.
TYPE LOCATION: Dodge County, Wisconsin; about 2 miles south of Theresa; 2100 feet east and 40 feet south of the northwest corner of sec. 27, T. 12 N., R. 17 E. USGS Nenno Wis. Quad. Latitude 43 degrees 29 minutes 08 seconds N., Longitude 88 degrees 27 minutes 07 seconds W. NAD 27.
RANGE IN CHARACTERISTICS: The thickness of the light-colored stratified silty colluvium or alluvium and the depth to the buried soil ranges from 20 to 39 inches. Depth to the BtB horizon is less than 40 inches. The particle-size control section averages from 14 to 18 percent clay and from 5 to 15 percent fine sand or coarser. Reaction ranges from moderately acid to slightly alkaline throughout the soil.
Thw Ap horizon has hue of 10YR, value of 3 or 4, and chroma of 2 or 3. Texture is silt loam.
The C horizon has hue of 10YR, value of 3 to 5, and chroma of 2 or 3. Texture is silt loam with thin strata of silt or very fine sand in some pedons.
The Ab horizon has hue of 10YR, value of 2 to 4, and chroma of 1 or 2. Texture is silt laom.
The Btb horizons have hue of 7.5YR or 10YR, value of 3 to 5, and chroma of 3 or 4. Value and chroma of 3 do not occur together. Texture is silt loam or silty clay loam.
The 2Bwb or 2Btb horizon has hue of 7.5YR or 10YR and value and chroma of 3 or 4. Texture is clay loam, loam, sandy clay loam, or sandy loam.
Some pedons have a 2C horizon with hue of 7.5YR or 10YR, value of 4 to 6, and chroma of 3 or 4. Texture is sandy loam or loam.
COMPETING SERIES: These are the Arenzville, Belvue, Chaseburg, Hadley, and Si series. None of these soils except Arenzville, have a buried soil within the series control section. Arenzville soils do not have a buried argillic horizon within a depth of 40 inches.
GEOGRAPHIC SETTING: Juneau soils are on foot slopes in the glaciated landscape, commonly along the base of drumlins or morainic slopes or in intermittent drainageways. Slopes range from 0 to 6 percent. These soils formed in light-colored, stratified, recently deposited silty colluvium or alluvium over a buried soil. Mean annual precipitation ranges from 28 to 32 inches. Mean annual air temperature ranges from 46 to 50 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: Juneau soils are associated in the landscape with
Miami,
Theresa,
Dodge,
McHenry, and
St. Charles soils. All of these soils are on higher topographic positions that contributed the colluvium in which Juneau soils formed. Juneau soils form a drainage sequence with the somewhat
poorly drained
Orion and the poorly drained
Washtenaw soils in nearly level or depressional sites.
DRAINAGE AND PERMEABILITY: Moderately well drained. The potential for surface runoff ranges from negligible to medium. Permeability is moderate. These soils have an apparent seasonal high water table at a depth of 3.5 to 6 feet for some time in most years.
USE AND VEGETATION: Most areas of this soil are used for cropland. Common crops are corn, small grain, and hay. Some areas are used for woodland or pastureland. Native vegetation consists mainly of oak-hickory or maple-basswood forest.
DISTRIBUTION AND EXTENT: Southeastern Wisconsin and northern Illinois. Juneau soils are of moderate extent.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Dodge County, Wisconsin, 1970.
REMARKS: This soil is questioned for fine-silty.
12/05- Need to verify apparent vs perched water table.
12/05 - Need to verify differentia for Arenzville, - not sure depth to argillic is viable as mapped.
Diagnostic horizons and feature recognized in this pedon are: ochric epipedon 0 to 6 inches (Ap); fluventic feature - slopes less than 25 percent and organic carbon content that decreases irregularly between 25 and 125 cm and soil temperature warmer than cryic