LOCATION MIAMIAN OH+IN

Established Series
Rev. TEL-JRA-DBD
11/2021

MIAMIAN SERIES

The Miamian series consists of very deep, well drained soils that are moderately deep to dense till. These soils formed in as much as 46 cm (18 inches) of loess and the underlying loamy till on till plains and moraines. Slope ranges from 0 to 50 percent. Mean annual precipitation is about 965 mm (38 inches), and mean annual air temperature is about 12 degrees C (53 degrees F).

TAXONOMIC CLASS: Fine, mixed, active, mesic Oxyaquic Hapludalfs

TYPICAL PEDON: Miamian silt loam, on a northeast-facing, convex, 3 percent slope in a cultivated field at an elevation of 302 meters (990 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 23 cm (0 to 9 inches); brown (10YR 4/3) silt loam, pale brown (10YR 6/3) dry; moderate medium subangular blocky structure parting to weak fine granular; friable; common fine roots; 1 percent gravel; neutral; abrupt smooth boundary. [13 to 25 cm (5 to 10 inches) thick]

2Bt1--23 to 30 cm (9 to 12 inches); dark yellowish brown (10YR 4/4) clay loam; moderate medium subangular blocky structure; friable; few fine roots; common distinct brown (7.5YR 4/4) clay films on faces of peds; 1 percent gravel; neutral; clear smooth boundary.

2Bt2--30 to 46 cm (12 to 18 inches); dark yellowish brown (10YR 4/4) clay loam; moderate medium subangular blocky structure; firm; few fine roots; many distinct brown (7.5YR 4/4) clay films on faces of peds; 2 percent gravel; moderately acid; clear wavy boundary.

2Bt3--46 to 66 cm (18 to 26 inches); yellowish brown (10YR 5/4) clay; weak medium prismatic structure parting to strong medium angular and subangular blocky; firm; few fine roots; many distinct brown (7.5YR 4/4) clay films on faces of peds; 2 percent gravel; slightly acid; clear wavy boundary. [Combined thickness of the 2Bt horizon is 20 to 89 cm (8 to 35 inches).]

2BC--66 to 84 cm (26 to 33 inches); yellowish brown (10YR 5/4) loam; weak coarse subangular blocky structure; firm; common distinct brown (7.5YR 4/4) clay films on vertical faces of peds; few fine prominent strong brown (7.5YR 5/8) masses of oxidized iron in the matrix; many very pale brown (10YR 8/2) weathered remnants (calcium carbonate) in the matrix; 5 percent gravel; slightly effervescent; slightly alkaline; clear irregular boundary. [15 to 38 cm (6 to 15 inches) thick]

2Cd--84 to 200 cm (33 to 79 inches); yellowish brown (10YR 5/4) loam; massive; very firm; few fine prominent strong brown (7.5YR 5/8) masses of oxidized iron in the matrix; 10 percent gravel; strongly effervescent; moderately alkaline.

TYPE LOCATION: Montgomery County, Ohio; about 2 miles east of Englewood, in Butler Township; 980 feet north and 1,735 feet east of the southwest corner of sec. 13, T. 6 N., R. 5 E.; 875 feet west and 490 feet north of the intersection of Meeker Road and Frederick Pike; USGS West Milton, Ohio topographic quadrangle; lat. 39 degrees 52 minutes 45 seconds N., and long. 84 degrees 16 minutes 04 seconds W., NAD 27.

RANGE IN CHARACTERISTICS:
Depth to the base of the argillic horizon: 51 to 102 cm (20 to 40 inches)
Depth to carbonates: 46 to 102 cm (18 to 40 inches)
Thickness of the loess: 0 to 46 cm (18 inches)
Particle-size control section: 35 to 45 percent clay, averaging about 38 percent
Rock fragments: dominated of limestone and igneous lithology

Ap horizon:
Hue: 10YR
Value: 3 to 5 (6 or 7 dry)
Chroma: 2 or 3
Texture: silt loam, silty clay loam, or clay loam
Rock fragment content: 1 to 14 percent
Reaction: moderately acid to neutral, depending on liming conditions

A horizon, where present:
Thickness: 2.5 to 10 cm (1 to 4 inches)
Hue: 10YR
Value: 2 or 3
Chroma: 1 or 2
Texture: silt loam
Rock fragment content: 1 to 14 percent
Reaction: moderately acid to neutral, depending on liming conditions

E horizon, where present:
Hue: 10YR
Value: 5
Chroma: 2
Texture: loam or silt loam
Rock fragment content: 1 to 14 percent
Reaction: commonly strongly acid or moderately acid, but ranges from very strongly acid to neutral

Bt horizon formed in loess, where present:
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 3 to 6
Texture: silt loam or silty clay loam
Reaction: very strongly acid to neutral

2Bt horizon:
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 3 to 6
Texture: clay loam or clay
Rock fragment content: 1 to 14 percent
Reaction: very strongly acid to neutral

2BC horizon:
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 3 to 6
Texture: clay loam or loam
Rock fragment content: 1 to 14 percent
Reaction: strongly acid to moderately alkaline

2Cd horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5
Chroma: 2 to 4
Texture: loam
Rock fragment content: 1 to 14 percent
Calcium carbonate equivalent: 25 to about 50 percent
Reaction: slightly alkaline or moderately alkaline

COMPETING SERIES: These are the Aaron, Alsup, Brookside, Derinda, Ebal, Goodson, Morrisville, Munterville, Shircliff, Skrainka, Useful, and Vincent series. Aaron, Alsup, Derinda, Goodson, Morrisville, and Useful soils have a lithic or paralithic contact within a depth of 152 cm (60 inches). Brookside and Ebal soils have more than 27 percent clay in the lower part of the series control section. Munterville, Skrainka, and Vincent soils do not have carbonates within a depth of 102 cm (40 inches). Shircliff soils are more than 102 cm (40 inches) to the base of the argillic horizon.

GEOGRAPHIC SETTING: The Miamian soils are on till plains and moraines of Wisconsinan age. Slope ranges from 0 to 50 percent. The soils formed in as much as 46 cm (18 inches) of loess and the underlying loamy till. Mean annual precipitation ranges from 965 to 1067 mm (38 to 42 inches). Mean annual air temperature ranges from 11 to 13 degrees C (51 to 55 degrees F). Frost-free period is 145 to 190 days. Elevation is 274 to 381 meters (900 to 1250 feet) above mean sea level.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Brookston, Celina, Crosby, Kokomo, and Losantville soils. The poorly drained Brookston and very poorly drained Kokomo soils are in depressions. The moderately well drained Celina soils are on similar landscape positions. The somewhat poorly drained Crosby soils are on less sloping topographic positions. The moderately well drained Losantville soils are on similar landscape positions.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained. Depth to the top of a perched seasonal high water table ranges from 76 to 107 cm (2.5 to 3.5 feet) between January and May in normal years. Potential for surface runoff is medium or high. Saturated hydraulic conductivity is moderately high in the solum and low in the substratum. Permeability is moderately slow in the solum and slow or very slow in the substratum.

USE AND VEGETATION: Miamian soils are cultivated. Corn, soybeans, wheat, oats, meadow and legume-grass mixtures are the principal crops. Some areas are in trees. Native vegetation is deciduous forest.

DISTRIBUTION AND EXTENT: MLRAs 111A, 111B, 111D, and 111E in Ohio and MLRA 111A in Indiana. The type location is in MLRA 111A. The series is of large extent, more than 650,000 acres.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: AMHERST, MASSACHUSETTS

SERIES ESTABLISHED: Montgomery County, Ohio, 1969.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: from the surface to a depth of 23 cm (Ap horizon).
Argillic horizon: from a depth of 23 to 66 cm (2Bt horizon).
Densic contact: at 84 cm (top of the 2Cd horizon).

A bedrock substratum phase is recognized. This phase will likely become a new series when subsets with this phase are updated.

ADDITIONAL DATA: Characterization data is available from the Kellogg Soil Survey Laboratory (KSSL), Lincoln, Nebraska. Pedon 1984OH113023 (MT-023) is located less than 100 feet from the type location. Data for pedons sampled by the Agricultural Experiment Station at Purdue University and at The Ohio State University are also available from KSSL.

National Cooperative Soil Survey
U.S.A.