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soil clod

NewGlarus

soil profile

NEWGLARUS SERIES

LOCATION          WI+IA IL MN

Established Series
Rev. AJK-HFG-CLV
08/2002


The NewGlarus series consists of well drained soils deep to dolostone or other limestone. These upland and terrace soils formed in loess and clayey pedisediment and in loamy residuum weathered from the underlying dolostone. Permeability is moderate in the loess, slow in the clayey pedisediment, moderate in the loamy residuum, and slow to moderate in the dolostone. Slopes range from 2 to 45 percent. Mean annual precipitation is about 33 inches. Mean annual temperature is about 48 degrees F.

TAXONOMIC CLASS: Fine-silty over clayey, mixed, superactive, mesic Typic Hapludalfs

TYPICAL PEDON: NewGlarus silt loam - on an 8 percent slope in uncultivated area at an elevation of about 1,050 feet. (Colors are for moist soil unless otherwise stated).

Ap--0 to 9 inches; very dark grayish brown (10YR 3/2) silt loam, light brownish gray (10YR 6/2) dry; moderate very fine subangular blocky structure; friable; many fine roots; neutral; abrupt smooth boundary. (3 to 5 inches thick)

BE--9 to 13 inches; yellowish brown (10YR 5/4) silt loam; moderate fine subangular blocky structure; friable; common fine roots; slightly acid; clear smooth boundary. (0 to 6 inches thick)

Bt1--13 to 23 inches; yellowish brown (10YR 5/4) silty clay loam; moderate fine angular and subangular blocky structure; very firm; few fine roots; faint continuous clay films on all faces of peds; slightly acid; clear smooth boundary. (8 to 20 inches thick)

2Bt2--23 to 35 inches; dark reddish brown (2.5YR 3/4) clay; moderate fine angular and subangular blocky structure; very firm; few fine roots; faint continuous clay films on all faces of peds; about 7 percent chert gravel; slightly acid; abrupt smooth boundary. (6 to 20 inches thick)

3Bt3--35 to 45 inches; dark yellowish brown (10YR 4/4) very channery loam; moderate medium subangular blocky structure; friable; common faint brown (10YR 4/3) clay films on the faces of peds and in pores; thin residual layers of very dark grayish brown (10YR 3/2) clay occur around the dolostone fragments; about 35 percent dolostone channers; about 10 percent dolostone flagstones; neutral; abrupt irregular boundary.

3Rt--45 inches; fractured dolomite that is shattered in the upper part and has clay in the narrow and widely spaced fractures.

TYPE LOCATION: Green County, Wisconsin; about 1.5 miles north of Jordan Center; 1925 feet east and 990 feet north from the southwest corner of sec. 2, T. 2 N., R. 6 E.

RANGE IN CHARACTERISTICS: Depth to a lithic contact with dolomite ranges from 40 to 60 inches. The loess thickness ranges from 12 to 35 inches. Volume of chert gravel and dolostone channers and flagstones ranges from 0 to 15 percent in the loess, 3 to 35 percent chert gravel and dolostone channers and 0 to 15 percent dolostone flagstones in the pedisediment, and 35 to 70 percent dolostone channers and flagstones in the residuum. Reaction ranges from slightly acid to slightly alkaline.

The Ap horizon has hue of 10YR, value of 3 or 4, and chroma of 2 or 3. Texture is silt loam or silty clay loam.

Some pedons have A horizons with hue of 10YR, value of 3 or 4, and chroma of 1 or 2. Where the value is 3, it is less than 6 inches thick or the dry color value is 6 or more. Texture is silt loam.

Some pedons have E horizons with hue of 10YR, value of 4 to 6, and chroma of 2 to 6. Texture is silt loam

The BE horizon has hue of 10YR, value of 3 to 5, and chroma of 3 or 4. Texture is silt loam or silty clay loam.

The Bt horizon has hue of 7.5YR or 10YR, value of 4 or 5, and chroma of 3 to 6. Texture is silt loam or silty clay loam. Clay content ranges from 18 to 35 percent.

The 2Bt horizon has hue of 2.5YR, 5YR, or 7.5YR; value of 3 to 5; and chroma is 3 to 6. Texture is silty clay, clay, clay loam, silty clay loam, or the channery or flaggy analogs. Clay content ranges from 35 to 65 percent.

The 3Bt horizon has hue of 7.5YR or 10YR, value of 3 or 4, and chroma of 2 to 4. The 3Bt horizon has distinctive coatings with value of 3 and chroma of 2 just above the contact with the dolomite. Texture is loam or sandy loam or the very channery, very flaggy, extremely channery, extremely flaggy analogs. .

COMPETING SERIES: This is the Village series. Village soils do not have dolostone bedrock at depths of 40 to 60 inches.

GEOGRAPHIC SETTING: NewGlarus soils typically are on ridgetops and side slopes in undulating or rolling landscape underlain by dolostone, but some pedons are on bench terraces. Slopes range from 2 to 45 percent. The soils formed in 12 to 35 inches of loess and the underlying clayey pedisediment and in the loamy residuum weathered from the underlying dolostone. Mean annual precipitation ranges from 28 to 37 inches. Mean annual air temperature ranges from 45 to 53 degrees F.

GEOGRAPHICALLY ASSOCIATED SOILS: 

DodgevilleDubuqueFivepoints(T), and Palsgrove soils near the type location. Dodgeville soils are on similar topography and have a mollic epipedon. Dubuque soils are associated in landscapes where the clayey residuum is less than 6 inches thick. Fivepoints soils are on similar landscapes, but have thinner loess deposits and lithic contacts within depths of 40 inches. Palsgrove soils are on sites in similar geographic positions where the loess deposits are thicker.

DRAINAGE AND PERMEABILITY: Well drained. Runoff is medium. Permeability is moderate in the loess, slow in the clayey pedisediment, moderate in the loamy residuum, and slow to moderate in the dolostone.

USE AND VEGETATION: The less sloping areas are cropped to corn, soybeans, small grain, and legume hay. The steeper areas are in pasture or woodland. Native vegetation was mixed deciduous forests.

DISTRIBUTION AND EXTENT: Southern and west-central Wisconsin, eastern Iowa, and southeastern Minnesota, and northern Illinois. The series is of moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota

SERIES ESTABLISHED: Green County, Wisconsin, 1969.

REMARKS: NewGlarus soils were at one time included with the Dubuque soils.

Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from the surface of the soil to a depth of 9 inches (Ap horizon); argillic horizon - zone from 13 to 45 inches (Bt1, 2Bt2, 3Bt3 horizons); other features - strongly contrasting particle-size class (absolute difference of 25 percent clay).

Profiles that have the thicker loess deposits may classify as fine-silty instead of fine-silty over clayey.

 


National Cooperative Soil Survey
U.S.A.