LOCATION ASHIPPUN WIEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, mesic Aquollic Hapludalfs
TYPICAL PEDON: Ashippun silt loam - on a 3 percent convex slope in a cultivated field at an elevation of about 885 feet. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 8 inches; very dark grayish brown (10YR 3/2) silt loam, grayish brown (10YR 5/2) dry; moderate medium and fine granular structure; friable; slightly alkaline; abrupt smooth boundary. (6 to 9 inches thick)
E--8 to 11 inches; dark grayish brown (10YR 4/2) silt loam, very pale brown (10YR 8/3) dry; weak thick platy structure parting to moderate fine subangular blocky; friable; few fine distinct dark yellowish brown (10YR 4/4) masses of iron accumulation in the matrix; slightly alkaline; abrupt smooth boundary. (0 to 7 inches thick)
Bt1--11 to 20 inches; olive brown (2.5Y 4/4) silty clay loam; strong medium angular blocky structure; firm; nearly continuous distinct dark brown (10YR 3/3) clay films on faces of peds; common fine prominent yellowish brown (10YR 5/8) masses of iron accumulation in the matrix; common fine distinct grayish brown(10YR 5/2) iron depletions in the matrix; slightly alkaline; gradual wavy boundary. (5 to 12 inches thick)
2Bt2--20 to 26 inches; olive brown (2.5Y 4/4) and light olive brown (2.5Y 5/4) clay loam; moderate medium subangular blocky structure; firm; distinct very dark grayish brown (2.5Y 3/2) clay films on faces of peds; many fine distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; many fine distinct grayish brown (10YR 5/2) and light brownish gray (10YR 6/2) iron depletions in the matrix; many fine shale fragments; slightly alkaline; gradual wavy boundary. (5 to 12 inches thick)
2BC--26 to 30 inches; grayish brown (2.5Y 5/2) and light olive brown (2.5Y 5/4) loam; weak fine subangular blocky structure; tendancy to break to weak thick plates along horizontal cleavage planes inherited from the parent material; very friable; segregated lime; common fine prominent yellowish brown (10YR 5/8) masses of iron accumulation in the matrix; about 12 percent pebbles, cobbles, and shale fragments ; strongly effervescent; moderately alkaline; abrupt smooth boundary. (3 to 10 inches thick)
2C2--30 to 60 inches; light olive brown (2.5Y 5/4) and light yellowish brown (2.5Y 6/4) loam; weakly stratified; friable; about 10 percent coarse fragments ; strongly effervescent; moderately alkaline.
TYPE LOCATION: Dodge County, Wisconsin; about 1 1/2 miles northwest of Iron Ridge; 2,300 feet south and 1,000 feet east of the northwest corner of sec. 14, T. 11 N., R. 16 E. USGS Mayville South, Wisconsin topographicquadrangle; lat. 43 degrees 25 minutes 20 seconds N., and long. 88 degrees 33 minutes 28 seconds W., NAD 27.
RANGE IN CHARACTERISTICS: Thickness of the loess mantle ranges from 10 to 20 inches. Depth to the base of soil development and to carbonates ranges from 20 to 40 inches. The particle-size control section averages between 24 and 35 percent clay and from 15 to 50 percent fine sand or coarser. Volume of partially weathered shale fragments less than 3 inches in size ranges from 5 to 25 percent in the 2B and 2C horizons. Volume of coarse fragments larger than 3 inches in size ranges from 0 to 10 percent. Reaction is neutral or slightly alkaline in the upper part of the soil and is slightly or moderately alkaline in the lower part. Carbonates are typically in the lower part of the 2B horizon and are always in the 2C horizon. Redox accumulations are typically throughout the soil below the A horizon. Redox depletions with chroma of 2 or less are within the upper 10 inches of the argillic horizon.
The A or Ap horizon has hue of 10YR , value of 2 or 3, and chroma of 1 to 3. Texture is silt loam.
The E horizon has hue of 10YR , value of 4 to 6, and chroma of 2 or 3. Texture is silt loam.
The Bt horizon has hue of 10YR or 2.5Y , value of 4, and chroma of 3 or 4. Texture is silty clay loam or silt loam.
The 2Bt horizon has hue of 10YR or 2.5Y , value of 4 or 5, and chroma of 3 or 4. Texture is loam, clay loam, or the shaly analogues.
The 2BC horizon has hue of 10YR or 2.5Y, value of 4 or 5, and chroma of 2 to 4. It is loam or shaley loam.
The 2C horizon has hue of 10YR or 2.5Y, value of 5 or 6, and chroma of 4. Texture is loam or shaly loam .
COMPETING SERIES: These are the Alida, Kibbie, Lourdes, Marker, and Montmorenci series. All of these soils except Alida are without shale fragments in the series control section. Alida soils do not have carbonates within the series control section.
GEOGRAPHIC SETTING: Ashippun soils are on ground moraines. Slope gradients range from 0 to 6 percent. These soils formed in a thin mantle of loess and in the underlying loam or shaly loam till. They are near the base of the Niagara Escarpment in the vicinity of shale outcrops. The mean annual air temperature ranges from 46 to 51 degrees F. Mean annual precipitation ranges from 28 to 35 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are mainly the Neda soils that are the moderately well drained members of the drainage sequence. Neda soils also are on steeper gradients in more rolling topography.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Surface runoff is medium . Permeability is moderately slow. These soils have a perched seasonal high water table at a depth of 1 to 2 feet.
USE AND VEGETATION: Much of this soil is drained and used for cropland. Principal crops are corn, small grain, and forage. Native vegetation is deciduous forest, probably maple and basswood with a few scattered prairies.
DISTRIBUTION AND EXTENT: These soils are only in Dodge County, Wisconsin. Ashippun soils are of small extent.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Dodge County, Wisconsin, l969.
REMARKS: Diagnostic horizons and feature recognized in this pedon are: ochric epipedon - 0 to 11 inches (Ap, E); argillic horizon - 11 to 26 inches (Bt1 and 2Bt2 ); aquic feature redox depletions with chroma of 2 or less and saturation in the upper 25 cm of the argillic horizon ; mollic subgroup Ap horizon with color value and chroma, moist, less than 4 and color value, dry, less than 6.