LOCATION COSHOCTON               OH

Established Series
SLH/Rev. MDJ
12/2012

COSHOCTON SERIES

TAXONOMIC CLASS: Fine-loamy, mixed, active, mesic Aquultic Hapludalfs

TYPICAL PEDON: Coshocton silt loam, on a south-facing, concave, 10 percent slope in a cultivated field at an elevation of 1120 feet above mean sea level. (Colors are for moist soil unless otherwise indicated.)

Ap--0 to 18 cm (0 to 7 inches); brown (10YR 4/3) silt loam, pale brown (10YR 6/3) dry; weak medium granular structure; friable; many fine roots; 5 percent shale fragments; moderately acid; abrupt smooth boundary. (10 to 30 cm thick)

BA--18 to 25 cm (7 to 10 inches); yellowish brown (10YR 5/4) silt loam; weak fine and medium subangular blocky structure; friable; common fine roots; 5 percent shale fragments; strongly acid; clear smooth boundary. (0 to 20 cm thick)

Bt1--25 to 36 cm (10 to 14 inches); yellowish brown (10YR 5/4) silty clay loam; weak fine and medium subangular blocky structure; friable; common fine roots; common distinct light yellowish brown (10YR 6/4) clay films on faces of peds; 10 percent shale fragments; very strongly acid; clear smooth boundary.

Bt2--36 to 43 cm (14 to 17 inches); yellowish brown (10YR 5/4) channery silty clay loam; moderate medium subangular blocky structure; firm; few fine roots; many fine distinct strong brown (7.5YR 5/6) iron-manganese redoximorphic masses; common fine distinct light brownish gray (10YR 6/2) redoximorphic depletions; common faint light yellowish brown (10YR 6/4) clay films on faces of peds; 15 percent shale fragments; very strongly acid; clear smooth boundary.

Bt3--43 to 69 cm (17 to 27 inches); yellowish brown (10YR 5/4) silty clay loam; moderate medium and coarse prismatic structure parting to weak coarse subangular blocky; firm; few fine roots; many dark concretions of iron and manganese oxide; common fine prominent yellowish brown (10YR 5/8) iron-manganese redoximorphic masses; few fine distinct light brownish gray (2.5Y 6/2) redoximorphic depletions; common faint grayish brown (10YR 5/2) and common distinct light yellowish brown (10YR 6/4) clay films on faces of peds; many distinct light brownish gray (2.5Y 6/2) silt coatings on vertical faces of prisms; 10 percent shale fragments; very strongly acid; abrupt wavy boundary. (Combined thickness of the Bt horizon is 30 to 89 cm)

BC--69 to 117 cm (27 to 46 inches); yellowish brown (10YR 5/4) channery loam; weak thick platy structure parting to weak fine subangular blocky; very firm; few fine roots; many dark concretions of iron and manganese oxide; few fine prominent yellowish brown (10YR 5/8) iron- manganese redoximorphic masses; few fine distinct light brownish gray (2.5Y 6/2) redoximorphic depletions; few faint light yellowish brown (10YR 6/4) clay films on vertical faces of peds; 20 percent shale fragments; very strongly acid; clear smooth boundary. (0 to 61 cm thick)

C--117 to 147 cm (46 to 58 inches); yellowish brown (10YR 5/4) channery silty clay loam; massive; firm; few fine prominent yellowish brown (10YR 5/8) iron-manganese redoximorphic masses; common medium distinct light brownish gray (2.5Y 6/2) redoximorphic depletions; 30 percent shale fragments; strongly acid; clear wavy boundary. (0 to 76 cm thick)

R--147 cm (58 inches); fractured shale with thin beds of sandstone.

TYPE LOCATION:
State: Ohio
County: Coshocton County
USGS Topographic Quadrangle: Coshocton, Ohio
Latitude: 40.36778 N (NAD 27)
Longitude: 81.789444 W (NAD 27)
Direction to the pedon: about 3 miles northwest of Fresno in White Eyes Township; North Appalachian Experimental Watershed, Agricultural Research Service; 170 feet south of Township Road 171d and 50 feet west of farm lane; about 1898 feet south and 330 feet west of the northeast corner of sec. 5, T. 6 N., R. 5 W

RANGE IN CHARACTERISTICS:
Depth to the top of the Argillic horizon: 20 to 46 cm (8 to 18 inches)
Depth to the base of the Argillic horizon: 64 to 102 cm (25 to 40 inches)
Solum Thickness: 61 to 127 cm (24 to 50 inches)
Depth to Bedrock: 102 to 213 cm (40 to 84 inches)
Depth to Seasonal High Water Table: 30 to 61 cm (12 to 24 inches), January to April
Rock Fragment content: 2 to 20 percent, by volume, in the Ap, A, and E horizons; 2 to 15 percent, by volume, in the upper part of the Bt; 2 to 35 percent, by volume, in the lower part of the Bt horizon and in the BC horizon; 2 to 60 percent, by volume, in the C horizon.
Fine-Earth Fraction: 25 to 35 percent clay in the particle-size control section
Soil Reaction: Extremely acid through neutral in the Ap horizon, extremely acid through strongly acid in the E, Bt, and BC horizons, and very strongly acid through moderately acid in the C horizon


Range of Individual Horizons:
Ap or A horizon:
Color--hue of 10YR; value of 2 through 4 (4 through 6 dry); and chroma of 2 through 4
Texture (fine-earth fraction)--silt loam or loam

E horizon (if present):
Color--hue of 10YR; value of 4 through 6; and chroma of 2 through 4
Texture (fine-earth fraction)--silt loam or loam

BA or BE horizon (if present):
Color--hue of 10YR or 7.5YR; value of 4 or 5; and chroma of 4 or 6
Texture (fine-earth fraction)--silt loam, loam, or silty clay loam

Bt horizon:
Color--hue of 10YR, 7.5YR, or 2.5Y; value of 4 through 6; and chroma of 2 through 6
Texture (fine-earth fraction)--silty clay loam, silty clay, silt loam, loam, or clay loam
Redoximorphic depletions and masses
A lithologic discontinuity and/or a stone line may be present in some pedons at the base of this horizon.

BC or 2BC horizon:
Color--hue of 10YR, 7.5YR, or 2.5Y; value of 4 through 6; and chroma of 2 through 6
Texture (fine-earth fraction)--silty clay loam, silty clay, silt loam, loam, or clay loam
Redoximorphic depletions and masses

C or 2C horizon:
Color--hue of 7.5YR, 10YR, or 2.5Y; value of 4 through 7; and chroma of 2 through 6
Texture (fine-earth fraction)--silty clay loam, silty clay, clay loam, or loam
Redoximorphic depletions and masses

COMPETING SERIES:
Bobtown soils--do not have fragments of shale, siltstone, or sandstone in the solum and contain less silt and more sand in the solum
Sycoline soils--have a paralithic or lithic contact at a depth of 51 to 102 centimeters and have coarse fragments of granulite or hornfelt

GEOGRAPHIC SETTING:
MLRA(s) using this series: 124 (Western Allegheny Plateau) and 126 (Central Alleghany Plateau)
Landscape: Hills
Landform: Hill and hillslope
Hillslope Profile Position: Summit, shoulder, or backslope
Geomorphic Component: Interfluve, side slope, nose slope, or head slope
Parent Material Origin Pennsylvanian interbedded shale, siltstone, sandstone, and occasional thin strata of coal, coal underclay, and limestone
Parent Material Kind: Residuum
Depth Class: Deep and Very Deep
Slope: 0 to 40 percent
Elevation: 259 to 418 meters (850 to 1371 feet)
Frost-Free Period: 170 to 195 days
Mean Annual Air Temperature: 9.8 to 11 degrees C. (49 to 52 degrees F.)
Mean Annual Precipitation: 900 to 1050 mm (35 to 41 inches)

GEOGRAPHICALLY ASSOCIATED SOILS:
Berks soils--occur on well drained uplands that are loamy-skeletal and moderately deep to bedrock
Dekalb soils--occur on well drained uplands that are loamy-skeletal and moderately deep to bedrock
Gilpin soils--occur on well drained uplands that are moderately deep to bedrock
Keene soils--occur on uplands that have a silty mantle and a fine-silty particle-size class
Latham soils--occur on uplands that have a fine particle size class and are moderately deep to shale bedrock
Westmoreland soils--occur on well drained uplands

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage Class (Agricultural): Moderately well drained
Internal Free Water Occurrence: Thick (>100 cm), shallow (25-50 cm), and common (present 3-6 months)
Saturated Hydraulic Conductivity Class: Moderately High to High
Permeability Class (Obsolete): Moderate
Flooding Frequency and Duration: None
Ponding Frequency and Duration: None
Index Surface Runoff: Low through very high
Shrink-Swell Potential: Low and moderate

USE AND VEGETATION:
Major uses: Cropland, hayland, pasture, and forest
Dominant vegetation: Grass-legume hay, corn, wheat, soybeans, and mixed hardwood trees dominated by oak and maple

DISTRIBUTION AND EXTENT:
Distribution: Southeastern Ohio; mainly MLRA 124, but some does occur in MLRA 126
Extent: Extensive, about 118,500 acres at the time of this revision

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: MORGANTOWN, WEST VIRGINIA

SERIES ESTABLISHED: Little Mill Creek Watershed, Coshocton County, Ohio, 1940.

REMARKS: Diagnostic horizons and soil characteristics recognized in this pedon are:
Ochric epipedon--the zone from 0 to 18 cm (Ap horizon)
Argillic horizon--the zone from 25 to 69 cm (Bt1, Bt2, and Bt3 horizons)
Redox depletions with chroma 2 or less--the zone from 36 to 147 cm

This revision eliminates colluvium as a parent material for the Coshocton series. Workers involved in recent Soil Survey updates believe this soil is derived from residuum. Future MLRA update work on this series will include addressing Coshocton where historically mapped in colluvial landform positions.

The 06/2000 revison included numerous changes made to all parts of OSD. Pedon description was updated to current redoximorphic feature terminology.

Previous revisions: 03/89-DRM; 06/2000-DRM,LER; 02/2005-DHK

ADDITIONAL DATA: Refer to sample pedon CS-5 (OSD type location) for characterization data. Other sampled pedons include CS-6, CS-30, MS-S5, and TU-W8. These samples were analyzed by the Ohio State University Soil Characterization Laboratory, Columbus, Ohio.

________________________________________

---

National Cooperative Soil Survey
U.S.A.