LOCATION MEADOWBANK IL
Established Series
Rev. WSM-JCD
04/2011
MEADOWBANK SERIES
The Meadowbank series consists of very deep, well drained soils on stream terraces. They formed in loess and in stratified loamy or sandy outwash. Slopes range from 0 to 5 percent. Mean annual precipitation is about 1067 millimeters (42 inches), and mean annual temperature is about 13 degrees C (55 degrees F).
TAXONOMIC CLASS: Fine-silty, mixed, superactive, mesic Typic Argiudolls
TYPICAL PEDON: Meadowbank silt loam - on a nearly level terrace summit in a cultivated field at an elevation of about 119 meters (392 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 20 centimeters (0 to 8 inches); very dark brown (10YR 2/2) silt loam, brown (10YR 5/3) dry; moderate fine granular structure; friable; few very fine roots; neutral; abrupt smooth boundary. (18 to 25 cm or 7 to 10 inches thick)
A--20 to 48 centimeters (8 to 19 inches); very dark grayish brown (10YR 3/2) silt loam, brown (10YR 5/3) dry; moderate fine subangular blocky structure; friable; few very fine root; neutral; clear smooth boundary. (7.5 to 25 cm or 3 to 10 inches thick)
Bt1--48 to 66 centimeters (19 to 26 inches); dark yellowish brown (10YR 4/4) silty clay loam; moderate medium subangular blocky structure; friable; few very fine roots; many distinct very dark grayish brown (10YR 3/2) clay films on faces of peds; neutral; clear smooth boundary.
Bt2--66 to 91 centimeters (26 to 36 inches); dark yellowish brown (10YR 4/4) silty clay loam; moderate medium prismatic structure parting to moderate medium subangular blocky; firm; few very fine roots; many distinct dark brown (10YR 3/3) clay films on faces of peds; neutral; clear smooth boundary. (Combined thickness of the Bt horizons is 38 to 64 cm or 15 to 25 inches.)
2Bt3--91 to 114 centimeters (36 to 45 inches); brown (7.5YR 4/4) loam; moderate medium prismatic structure parting to moderate medium subangular blocky; friable; few very fine roots; common distinct dark brown (7.5YR 3/4) clay films on faces of peds; neutral; clear smooth boundary.
2Bt4--114 to 125 centimeters (45 to 49 inches); strong brown (7.5YR 4/6) sandy loam; weak medium subangular blocky structure; friable; common distinct dark brown (7.5YR 3/4) clay films on faces of peds; slightly acid; clear smooth boundary. (Combined thickness of the 2Bt horizons is 25 to 76 centimeters or 10 to 30 inches.)
2E and Bt--125 to 203 centimeters (49 to 80 inches); light yellowish brown (10YR 6/4) sand (E part); strong brown (7.5YR 4/6) and yellowish brown (10YR 5/4) sandy loam and loamy sand lamellae (Bt part); single grain and loose (E part); weak coarse subangular blocky structure and very friable (Bt part); common distinct dark brown (7.5YR 3/4) clay bridges (Bt part); lamella are individually 1/2 to 3 inches thick and combined thickness of lamella is about 10 inches; slightly acid. (Thickness of the 2E and Bt horizon is 51 to 102 cm or 20 to 40 inches.)
TYPE LOCATION: White County, Illinois; about 4 miles east - southeast of Carmi; 180 feet east and 740 feet north of the southwest corner of sec. 22, T. 5 S., R. 10 E. USGS Maunie, Illinois, topographic quadrangle; lat. 38 degrees 04 minutes 10 seconds N. and long. 88 degrees 05 minutes 49 seconds W.; UTM Zone 16, Easting 403785, Northing 4214088; NAD 83.
RANGE IN CHARACTERISTICS:
Thickness of the mollic epipedon: 10 to 19 inches
Thickness of the loess: 24 to 40 inches
Thickness of the series control section: 50 to more than 80 inches
Depth to carbonates: 72 inches or more
Content of rock fragments: Less than 10 percent
Mean annual soil temperature: 13.3 to 15 degrees C (56 to 59 degrees F) at a depth of 51 centimeters (20 inches)
Ap and A horizons:
Hue: 10YR
Value: 2 or 3
Chroma: 2 or 3
Texture: silt loam
Reaction: strongly acid to neutral
Bt horizon:
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 4 to 6
Texture: silty clay loam
Content of clay: averages 27 to 35 percent and individual subhorizons range from 20 to 38 percent
Content of sand: less than 10 percent
Reaction: strongly acid to neutral
2Bt horizon:
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 4 to 6
Texture: clay loam, loam, or sandy loam
Content of clay: averages 20 to 35 percent and individual subhorizons range to 10 percent
Content of sand: averages 20 to 50 percent and individual subhorizons range to 70 percent
Reaction: very strongly acid to neutral
2E and Bt horizon:
Hue: 7.5YR or 10YR
Value: 4 to 6
Chroma: 4 to 6
Texture: sand, loamy sand, or sandy loam
Content of clay: averages less than 15 percent
Content of sand: averages more than 50 percent
Reaction: strongly acid to neutral
COMPETING SERIES: These are the
Ashdale,
Broadwell,
Dinsdale,
Douglas,
Elkhart,
Elmont,
Gymer,
Healing,
Lycurgus,
Malcolm,
Mendota,
Mickle,
Ogle,
Osco,
Parkway,
Plano,
Proctor,
Richwood,
Ripon,
Sibley,
Sidell,
Tama,
Tecumseh,
Toddville,
Wakenda, and
Waupecan series. Ashdale soils formed in thinner loess, the lower part of the control section formed in residuum weathered from limestone, and limestone bedrock is at depths of 100 to 150 cm (40 to 60 inches). Broadwell, Douglas, Gymer, Plano, Richwood, Tama, and Wakenda soils average less than 20 percent sand in the middle part of the series control section. Douglas soils also have glacial till at a depth of 100 to 150 cm (40 to 60 inches). Dinsdale, Ogle, Parkway, Proctor, and Sidell soils average more than 15 percent clay in the lower part of the series control section. Ogle soils also have a paleosol in the lower part of the series control section. Proctor soils also have a mean annual soil temperature of less than 13.3 degrees C (56 degrees F). Elkhart, Malcolm, and Mendota soils have a series control section that does not extend to below a depth of 40 inches. Elkhart soils also have carbonates within a depth of 100 cm (40 inches). Elmont soils have a paralithic contact within 150 cm (60 inches). Healing soils formed in alluvium from limestone, have chert and sandstone fragments in the series control section and average more than 10 percent sand in the upper part of the series control section. Lycurgus soils formed in 51 to 100 cm (20 to 40 inches) of loamy sediments with 10 to 40 percent sand over loess. Mickle, Osco and Toddville soils have a zone of periodic saturation within a depth of 183 cm (6 feet). Ripon soils have a limestone lithic contact within a depth of 100 cm (40 inches). Sibley soils have mollic epipedons that range from 61 to 91 cm (24 to 36 inches thick). Tecumseh soils have less than 50 percent sand in the lower part fo the series control section. Waupecan soils have Beta B horizons in sandy and gravelly outwash and more than 15 percent rock fragments in the lower part of the series control section.
GEOGRAPHIC SETTING: Meadowbank soils are on terraces. They formed in 61 to 102 centimeters (24 to 40 inches) of loess and in loamy and sandy outwash. Slope gradients range from 0 to 5 percent. Mean annual temperature ranges from 12 to 14 degrees C (54 to 57 degrees F), and mean annual precipitation varies from 1016 to 1219 millimeters (40 to 48 inches). Frost-free period is 175 to 205 days. Elevation is 100 to 225 meters (325 to 735 feet) above mean sea level.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Alvin,
Newhaven,
Ridgway,
Skelton,
Springerton, and
Tippecanoe soils. Alvin and Skelton soils formed in loamy and sandy material and are on ridge crests and side slopes. The somewhat poorly drained Newhaven soils and poorly drained Springerton soils are loamy throughout and are in lower positions on the terrace. Ridgway soils are the forest equivalent of the Meadowbank soils. Tippecanoe soils are loamy throughout and are in similar positions.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained. The potential for surface water runoff is low to medium. Saturated hydraulic conductivity is moderately high to high (4.23 to 14.11 micrometers per second) in the upper part and high to very high (42.34 to 141.14 micrometers per second) in the lower part of the series control section. Permeability is moderate in the upper part and rapid in the lower part.
USE AND VEGETATION: Most areas are used for cultivated crops. Principal crops are corn, soybeans, small grain, and meadow for hay. Some areas are used for pasture. Native vegetation is prairie grasses.
DISTRIBUTION AND EXTENT: South-central and southern Illinois in MLRAs 114B and 115A. Extent is small.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Indianapolis, Indiana
SERIES ESTABLISHED: White County, Illinois, 1990.
REMARKS: Diagnostic horizons and features recognized in this pedon are: mollic epipedon-the zone from the surface to a depth of 48 cm (19 inches), (Ap and A horizons); argillic horizon-the zone from approximately 48 to 203 cm (19 to 80 inches), (Bt1, Bt2, 2Bt3, 2Bt4, and the Bt part of the 2E&Bt horizons); a lithologic discontinuity from loess to outwash at a depth of 91 cm (36 inches).
National Cooperative Soil Survey
U.S.A.