LOCATION LEROY WIEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, mesic Typic Hapludalfs
TYPICAL PEDON: LeRoy silt loam - on an 5 percent slope in a cultivated field at an elevation of about 1,015 feet Above mean sea level. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 9 inches; dark grayish brown (10YR 4/2) silt loam, light brownish gray (10YR 6/2) dry; moderate fine and medium granular structure; friable; neutral; abrupt smooth boundary. (5 to 10 inches thick)
Bt1--9 to 14 inches; brown (10YR 4/3) silty clay loam; moderate fine and medium subangular blocky structure; firm; few faint clay films on faces of peds; strongly acid; gradual smooth boundary.
Bt2--14 to 19 inches; brown (10YR 4/3) silty clay loam; strong medium subangular blocky structure; few very dark brown (10YR 2/2) organo-clay films on faces of peds; few fine chert fragments near the lower horizon boundary; strongly acid; clear wavy boundary. (Combined thickness of the Bt horizons ranges from 4 to 10 inches.)
2Bt3--19 to 22 inches; brown (10YR 4/3) clay loam; weak coarse subangular blocky structure; firm; few distinct very dark brown (10YR 2/2) organo-clay films on faces of peds; many prominent coatings around decomposed limestone pebbles; about 5 percent limestone gravel; strongly effervescent; moderately alkaline; clear irregular boundary. (2 to 8 inches thick)
2C--22 to 60 inches; brown (10YR 5/3) gravelly loam; massive, friable; about 25 percent limestone gravel; strongly effervescent; moderately alkaline.
TYPE LOCATION: Dodge County, Wisconsin; about 1 mile southwest of Le Roy; 1000 feet north and 200 feet east of the southwest corner of sec. 27, T. 13 N., R. 16 E. USGS Mayville Wisconsin topographic quadrangle; lat. 43 degrees 33 minutes 45 seconds N., and long. 88 degrees 34 minutes 49 seconds W., NAD 27.
RANGE IN CHARACTERISTICS: Depth to the base of the argillic horizon ranges from 12 to 24 inches. Thickness of the loess mantle ranges from 10 to 20 inches. Depth to carbonates ranges from 10 to 20 inches. Volume of gravel and channers, mostly angular limestone but with a few chert, rangesfrom 2 to 12 percent in the 2Bt horizon and from 12 to 60 percent in the 2C horizon. Volume of cobbles and flagstones ranges from 0 to 1 percent in the 2Bt horizon and from 1 to 8 percent in the 2C horizon. Many of the fragments show weathering on the outer surfaces. Reaction naturally ranges from strongly acid to slightly acid in the loess, but ranges to neutral in the upper part, where the soil is limed. Reaction ranges from neutral to moderately alkaline in the 2Bt horizon and is moderately alkaline in the 2C horizon. Calcium carbonate equivalent ranges from 60 to 90 percent in the 2C horizon.
The Ap horizon has hue of 10YR, value of 4, and chroma of 2 to 4. Uncultivated pedons have an A horizon with hue of 10YR and value and chroma of 2 or 3. Texture of the Ap or A horizon is typically silt loam but is silty clay loam in some severely eroded pedons.
Some pedons have an E horizon with hue of 10YR, value of 4 or 5, and chroma of 2 or 3. Texture is silt loam.
Some pedons have a BE horizon with hue of 7.5YR or 10YR value of 2 to 5, and chroma of 3 or 4. Value and chroma of 3 do not occur together. Texture is silt loam.
The Bt horizon has 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 2Bt horizon has hue of 7.5YR or 10YR, value and chroma is 3 or 4. Value and chroma of 3 do not occur together. Texture is loam, sandy clay loam, or clay loam. Many pedons have a thin dark colored layer (Beta B) at the contact between the 2B and 2C horizons that results from the accumulation of organic matter contained in the illuviated material.
The 2C horizon has hue of 7.5YR or 10YR, value of 4 to 6, and chroma of 3 or 4. It is loam or sandy loam or the gravelly or very gravelly analogues of these textures. The calcium carbonate equivalent ranges from 60 to 90 percent.
COMPETING SERIES: These are the
Amanda,
Belmont,
Belmore,
Chili,
Cliftycreek,
Crouse,
Gallman,
Greybrook,
Hickory,
High Gap,
Kanawha,
Kidder,
Kosciusko,
Lumberton,
Martinsville,
Military,
Ockley,
Princeton,
Relay,
Richardville,
Riddles,
Senachwine,
Skelton,
Strawn,
Turnersburg,
Wawaka,
Wawasee, and
Woodbine series. None of these soils have a calcium carbonate equivalent of 60 to 90 percent within the series control section.
GEOGRAPHIC SETTING: LeRoy soils are on moraines. Slope ranges from 2 to 30 percent. These soils formed in a thin mantle of loess and in the underlying highly calcareous loamy till. Mean annual precipitation ranges from 28 to 33 inches. Mean annual air temperature ranges from 45 to 48 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Lomira and
St. Charles soils and, in some places, the
Markesan soils. Lomira and St. Charles soils are on more gentle slopes in the LeRoy landscape where the silt mantle is thicker. Markesan soils are next to LeRoy soils where the ochric epipedons grade to mollic.
DRAINAGE AND PERMEABILITY: Well drained. The potential for surface runoff ranges from low to high. Permeability is moderate.
USE AND VEGETATION: Most areas of this soil are used for cropland. Common crops are corn, small grain, forage, and canning crops.Native vegetation is mainly deciduous forests composed mainly of oak and hickory.
DISTRIBUTION AND EXTENT: Southeastern Wisconsin. This soil is of moderate extent.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: Dodge County, Wisconsin, 1974.
REMARKS:
9/04 The location for the typical pedon given in this OSD did not fall in a map unit of LeRoy. The location given for this same pedon in the published survey of Dodge County places it in a B slope map unit of LeRoy. Therefore, the location from the published survey is used in this OSD and the slope is changed from 8 percent to 5 percent.
These soils formerly were included with the Miami series. Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 9 inches (AP).
Argillic horizon - 9 to 22 inches (Bt1, Bt2, 2Bt3).