LOCATION CELINA OH+IN MIEstablished Series
TAXONOMIC CLASS: Fine, mixed, active, mesic Aquic Hapludalfs
TYPICAL PEDON: Celina silt loam, on an east-facing, 1 percent slope in a cultivated field at an elevation of about 329 meters (1080 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 20 cm (0 to 8 inches); dark grayish brown (10YR 4/2) silt loam; weak medium and fine granular structure; friable; slightly acid; abrupt smooth boundary. [13 to 30 cm (5 to 12 inches) thick]
Bt1--20 to 30 cm (8 to 12 inches); yellowish brown (10YR 5/4) silty clay loam; moderate medium and fine subangular blocky structure; firm; thin patchy dark grayish brown (10YR 4/2) clay films on faces of peds; thin patchy pale brown (10YR 6/3) clay depletions on faces of peds; moderately acid; clear smooth boundary. [0 to 20 cm (8 inches) thick]
2Bt2--30 to 43 cm (12 to 17 inches); dark yellowish brown (10YR 4/4) clay; moderate medium subangular and angular blocky structure; very firm; continuous brown (10YR 4/3) clay films on faces of peds; few fine faint yellowish brown (10YR 5/4) masses of iron accumulation; 2 percent rock fragments; moderately acid; gradual smooth boundary. [8 to 28 cm (3 to 11 inches) thick]
2Bt3--43 to 61 cm (17 to 24 inches); dark yellowish brown (10YR 4/4) clay; moderate medium subangular and angular blocky structure; very firm; continuous dark grayish brown (10YR 4/2) clay films on faces of peds; common medium distinct grayish brown (10YR 5/2) iron depletions; common medium distinct brownish yellow (10YR 6/8) masses of iron accumulation; common medium faint yellowish brown (10YR 5/4) masses of iron accumulation; 5 percent rock fragments; slightly acid; clear smooth boundary. [13 to 30 cm (5 to 12 inches) thick]
2BCt--61 to 74 cm (24 to 29 inches); yellowish brown (10YR 5/4) clay loam; weak medium and coarse subangular blocky structure; firm; thin patchy dark grayish brown (10YR 4/2) clay films on faces of peds, more prevalent on vertical faces; common medium distinct grayish brown (10YR 5/2) iron depletions; common medium prominent brownish yellow (10YR 6/8) masses of iron accumulation; common medium faint yellowish brown (10YR 5/4) masses of iron accumulation; 5 percent rock fragments; slightly effervescent in places; slightly alkaline; clear wavy boundary. [0 to 25 cm (10 inches) thick]
2Cd--74 to 152 cm (29 to 60 inches); yellowish brown (10YR 5/4) loam; massive; very firm, compact; common medium distinct grayish brown (10YR 5/2) iron depletions; common medium distinct yellowish brown (10YR 5/6) masses of iron accumulation; 10 percent rock fragments; strongly effervescent; moderately alkaline.
TYPE LOCATION: Preble County, Ohio; 1.5 miles west and 0.3 mile south of Eaton, in Washington South Township; NW1/4 SW1/4 NW1/4 of sec. 4, T. 7 N., R. 2 E.; 526 yards south and 41 yards east of the intersection of Castle Rd. and State Hwy. 122; lat: 39 degrees 44 minutes 24 seconds N. long: 84 degrees 40 minutes 07 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)
Depth to densic contact: 51 to 102 cm (20 to 40 inches)
Thickness of the loess: 0 to 46 cm (18 inches)
Particle-size control section: averages 35 and 42 percent clay, usually about 38 percent
Base saturation: the lowest base saturation percentage is in the Bt or upper part of the 2Bt horizon and is more than 35 percent even where the reaction is very strongly acid
Ap horizon:
Hue: 10YR
Value: 4 or 5
Chroma: 2 or 3
Texture: silt loam or loam
Reaction: moderately acid to neutral
A horizon, where present:
Thickness: 2.5 to 10 cm (1 to 4 inches)
Hue: 10YR
Value: 2 or 3
Chroma: 1 or 2
Reaction: moderately acid to neutral
E horizon, where present:
Thickness: 2.5 to 20 cm (1 to 8 inches)
Hue: 10YR
Value: 4 or 5
Chroma: 3 or 4
Texture: silt loam
Bt horizon:
Hue: 10YR
Value: 4 or 5
Chroma: 3 to 6
Texture: silt loam, silty clay loam, or clay loam
Special feature: in many pedons a thin coating of E horizon material, less than 2 mm (1 inch) thick, is in the upper 8 cm (3 inches) of the Bt horizon
Reaction: very strongly acid to neutral
2Bt horizon:
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 3 to 6
Texture: clay loam, silty clay loam, clay, or silty clay
Ped surfaces: clay coatings on faces of peds have hue of 7.5YR or 10YR, value of 3 to 5, and chroma of 2 to 4
Redox features: depletions and/or concentrations are present
Rock fragment content: 1 to 14 percent
Reaction: very strongly acid to neutral in the upper part and slightly acid to slightly alkaline in the lower part
2BCt horizon:
Hue: 10YR
Value: 4 or 5
Chroma: 3 or 4
Texture: clay loam, silty clay loam, or loam
Ped surfaces: clay films of 10YR 4/2 and 10YR 4/3 are more prominent on vertical faces and are lacking on some horizontal faces of peds
Redox features: common to many depletions and/or concentrations
Rock fragment content: 1 to 14 percent
Reaction: slightly acid to slightly alkaline
2Cd horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5
Chroma: 3 to 6
Texture: loam, silt loam, or clay loam
Clay content: 20 to 30 percent
Redox features: generally present
Rock fragment content: 1 to 14 percent
Reaction: slightly alkaline or moderately alkaline
COMPETING SERIES: These are the Banister, Branchville, Cardinal, Eudy, Hartville, Jerktail, Loudon, Tarlton, and Whippany series. Banister and Branchville soils are more than 102 cm (40 inches) to the base of the argillic horizon. Cardinal soils have less than 2 percent rock fragments in the lower part of the solum. Eudy and Tarlton soils have bedrock within a depth of 102 cm (40 inches). Hartville, Jerktail, and Loudon soils have sola greater than 102 cm (40 inches) in thickness. Whippany soils have hue redder than 10YR in the lower part of the series control section.
GEOGRAPHIC SETTING: The Celina soils are on till plains and moraines of Late Wisconsinan age. Slope ranges from 0 to 12 percent. They formed in as much as 46 cm (18 inches) of loess and the underlying loamy till of high-lime content. The till typically contains less than 24 percent clay and has calcium carbonate equivalent ranging from 25 to 45 percent. Rock fragments are primarily limestone but includes acid shale, sandstone, and igneous rocks. Climate is humid, continental. Mean annual precipitation ranges from 838 to 1067 mm (33 to 42 inches). Mean annual air temperature ranges from 11 to 13 degrees C (51 to 55 degrees F). Mean summer air temperature ranges from 23 to 24 degrees C (73 to 75 degrees F).
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Brookston, Corwin, Crosby, Fincastle, Kokomo, Miamian, Milton, Odell, Randolph, and Xenia soils. The poorly drained Brookston soils and very poorly drained Kokomo soils are in drainageways. The moderately well drained Corwin soils have a dark surface and are on adjoining landscapes. The somewhat poorly drained Crosby and Fincastle soils are on lower positions of the landscape. In addition, Fincastle soils have more than 46 cm (18 inches) of loess. Miamian soils are well drained and are on higher landscape positions. Milton soils are well drained and are on areas where bedrock is less than 102 cm (40 inches). Odell and Randolph soils are somewhat poorly drained and on lower positions of the landscape. In addition, Randolph soils are on areas where bedrock is less than 102 cm (40 inches). The moderately well drained Xenia soils have more than 46 cm (18 inches) of loess and are on adjacent landscapes.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained. The potential for surface runoff is medium or high. Saturated hydraulic conductivity is moderately high above the dense till and low in the dense till. Permeability is moderately slow above the dense till, and very slow in the dense till.
USE AND VEGETATION: A large part is under cultivation. Principal crops are corn, soybeans, wheat, oats and meadow of legumes or legume-grass mixtures. Local areas are used for growing vegetables. A relatively small part is in permanent bluegrass pasture or in woodland. Native vegetation is deciduous forest, principally oaks, maple, elm, hickory and ash.
DISTRIBUTION AND EXTENT: MLRAs 111A, 111B, 111D, and 111E in central and western Ohio and southeastern Indiana, and MLRAs 98 and 99 in Michigan. The type location is in MLRA 111A. The series is of large extent.
MLRA OFFICE RESPONSIBLE: Indianapolis, Indiana.
SERIES ESTABLISHED: Clark County, Ohio, 1949.
REMARKS: Lab data for the type location (PB-17) shows that the particle-size class is fine-loamy. The particle-size classification needs to be reevaluated during MLRA updating activities and a new type location established.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: from the surface to a depth of 20 cm (Ap horizon).
Argillic horizon: from a depth of 20 to 74 cm (Bt, 2Bt, 2BCt horizons).
Densic contact: at 74 cm (top of the 2Cd horizon).
Aquic conditions: redox features visible in all horizons below a depth of 43 cm.
ADDITIONAL DATA: Characterization data is available for PB-17, the type location, from the Soil Characterization Laboratory at The Ohio State University, Columbus, Ohio.