LOCATION SECONDCREEK OH

Established Series
Rev. TEL-SJH-MHD-JRA
11/2021

SECONDCREEK SERIES

The Secondcreek series consists of very deep, very poorly drained soils formed in lacustrine deposits and the underlying till on till plains. Slope ranges from 0 to 1 percent. Mean annual precipitation is about 1054 mm (41 inches), and mean annual air temperature is about 11 degrees C (52 degrees F).

TAXONOMIC CLASS: Fine, mixed, superactive, mesic Typic Endoaquolls

TYPICAL PEDON: Secondcreek silty clay loam, on a slightly concave, nearly level area in a cultivated field at an elevation of about 316 meters (1037 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 28 cm (0 to 11 inches); very dark gray (10YR 3/1) silty clay loam, gray (10YR 5/1) dry; moderate medium and fine subangular blocky structure; firm; few fine roots; few fine prominent brown (7.5YR 4/4) masses of iron accumulation; moderately acid; abrupt wavy boundary. [15 to 28 cm (6 to 11 inches) thick]

A--28 to 46 cm (11 to 18 inches); black (10YR 2/1) silty clay loam, dark gray (10YR 4/1) dry; moderate medium subangular blocky structure; firm; few fine roots; common black (10YR 2/1) pressure faces on faces of peds; common fine prominent yellowish brown (10YR 5/8) masses of iron accumulation; 3 percent igneous rock fragments; slightly acid; abrupt wavy boundary. [20 to 38 cm (8 to 15 inches) thick]

Bg1--46 to 82 cm (18 to 32 inches); gray (2.5Y 5/1) silty clay; moderate medium prismatic structure parting to moderate medium subangular blocky; firm; few fine roots on faces of prisms; common faint dark gray (2.5Y 4/1) pressure faces and slickensides on faces of prisms; many very dark gray (10YR 3/1) krotovina; many medium prominent strong brown (7.5YR 5/8)and common fine prominent brown (7.5YR 5/4) masses of iron accumulation in the matrix; few medium prominent black (10YR 2/1) manganese oxide masses throughout; 3 percent igneous rock fragments; neutral; clear wavy boundary. [30 to 63 cm (12 to 25 inches) thick]

2Bg2--82 to 102 cm (32 to 40 inches); gray (2.5Y 5/1) clay loam; moderate medium subangular blocky structure; firm; common distinct gray (2.5Y 5/1) pressure faces on faces of peds; common very dark gray (10YR 3/1) krotovina; common medium distinct light olive brown (2.5Y 5/4) and many medium prominent strong brown (7.5YR 5/6) masses of iron accumulation throughout; common fine prominent black (10YR 2/1) manganese oxide masses throughout; 2 percent igneous rock fragments; neutral; gradual wavy boundary.

2Bg3--102 to 132 cm (40 to 52 inches); grayish brown (2.5Y 5/2) clay loam; moderate medium subangular blocky structure; firm; common distinct gray (2.5Y 5/1) pressure faces on faces of peds; many very dark gray (10YR 3/1) krotovina; common medium distinct light olive brown (2.5Y 5/4) and many medium prominent strong brown (7.5YR 5/6) masses of iron accumulation throughout; common fine prominent black (10YR 2/1) manganese oxide masses throughout; 3 percent igneous rock fragments; neutral; clear wavy boundary.

2Bg4--132 to 147 cm (52 to 58 inches); grayish brown (10YR 5/2) clay loam; moderate medium subangular blocky structure; firm; common distinct gray (2.5Y 5/1) pressure faces on faces of peds; common very dark gray (10YR 3/1) krotovina; common medium distinct light olive brown (2.5Y 5/4) and many medium prominent strong brown (7.5YR 5/6) masses of iron accumulation throughout; common fine distinct black (10YR 2/1) manganese oxide masses throughout; 3 percent igneous rock fragments; neutral; clear wavy boundary. [Combined thickness of the 2Bg horizon is 51 to 127 cm (20 to 50 inches).]

2Bw1--147 to 165 cm (58 to 65 inches); light olive brown (2.5Y 5/3) clay loam; weak coarse prismatic structure parting to weak medium subangular blocky; firm; few fine roots; many very dark gray (10YR 3/1) krotovina; many medium distinct gray (10YR 6/1) iron depletions on faces of peds; common fine faint olive brown (2.5Y 4/4) masses of iron accumulation in the matrix; common medium prominent strong brown (7.5YR 5/6) masses of iron accumulation throughout; common fine prominent black (10YR 2/1) manganese oxide masses throughout; 3 percent rock fragments; slightly alkaline; clear wavy boundary.

2Bw2--165 to 188 cm (65 to 74 inches); light olive brown (2.5Y 5/3) gravelly clay loam; weak coarse prismatic structure parting to weak medium subangular blocky; firm; few fine roots; many very dark gray (10YR 3/1) krotovina; common fine faint light olive brown (2.5Y 5/4) masses of iron accumulation in the matrix; common medium prominent strong brown (7.5YR 5/6) masses of iron accumulation throughout; common fine prominent black (10YR 2/1) manganese oxide masses throughout; 15 percent rock fragments; slightly alkaline; clear wavy boundary.

2Bw3--188 to 203 cm (74 to 80 inches); light olive brown (2.5Y 5/3) clay loam; weak coarse prismatic structure parting to weak medium subangular blocky; firm; few fine roots; common very dark gray (10YR 3/1) krotovina; common fine faint light olive brown (2.5Y 5/4) masses of iron accumulation in the matrix; common medium prominent strong brown (7.5YR 5/6) masses of iron accumulation throughout; common fine prominent black (10YR 2/1) manganese oxide masses throughout; 5 percent rock fragments; slightly effervescent; slightly alkaline. [Combined thickness of the 2Bw horizon is 25 to 76 cm (10 to 30 inches).]

TYPE LOCATION: Clinton County, Ohio; about 4 miles southeast of Clarksville, in Vernon Township; about 5,280 feet southeast of the intersection of SR 730 and SR 350 and about 700 feet south of SR 350; USGS Blanchester, Ohio topographic quadrangle; lat. 39 degrees 22 minutes 23.2 seconds N. and long. 83 degrees 54 minutes 50.4 seconds W., NAD 83.

RANGE IN CHARACTERISTICS:
Depth to the base of the cambic horizon: is greater than 203 cm (80 inches)
Thickness of the mollic epipedon: 25 to 60 cm (10 to 24 inches)
Depth to till: 63 to 127 cm (25 to 50 inches)
Depth to carbonates: 165 to 254 cm (65 to 100 inches)

Ap or A horizon:
Hue: 10YR or is neutral
Value: 2, 2.5 or 3
Chroma: 0 to 2
Texture: silty clay loam; overwash phase is silt loam
Rock fragment content: 0 to 4 percent
Reaction: moderately acid to neutral

Bg or Bw horizon:
Hue: 10YR or 2.5Y
Value: 3 to 6
Chroma: 1 to 6
Texture: silty clay loam or silty clay
Rock fragment content: 0 to 4 percent
Reaction: neutral to moderately alkaline

2Bg or 2Bw horizon:
Hue: 10YR or 2.5Y
Value: 3 to 6
Chroma: 1 to 6
Texture: silty clay loam or clay loam
Rock fragment content: 2 to 15 percent
Reaction: neutral to moderately alkaline

2BCg horizon, where present:
Hue: 10YR or 2.5Y, or is neutral
Value: 3 to 6
Chroma: 0 to 2
Texture: silty clay loam, sandy loam, or clay loam
Rock fragment content: 2 to 14 percent
Reaction: slightly alkaline to moderately alkaline

COMPETING SERIES: These are the Ashkum, Milford, and Woldale series. Ashkum and Milford soils are less than 203 cm (80 inches) to the base of the cambic horizon. Woldale soils have more than 14 percent rock fragments in the lower part of the series control section.

GEOGRAPHIC SETTING: Secondcreek soils are on nearly level to slightly depressional areas along the Cuba Moraine. Slope ranges from 0 to 1 percent. Thee soils formed in lacustrine deposits and the underlying till of Illinoian age. Mean annual precipitation ranges from about 940 to 1170 mm (37 to 46 inches.) Mean annual air temperature ranges from about 9 to 14 degrees C (48 to 57 degrees F). Frost-free period is 155 to 225 days. Elevation is 290 to 317 meters (950 to 1040 feet) above mean sea level.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Blanchester, Clermont, Jonesboro, Rossmoyne, Schaffer, and Westboro soils. The poorly drained Blanchester soils are on similar landscape positions and have a thinner, dark colored surface layer. The Clermont, Jonesboro, Rossmoyne, Schaffer, and Westboro soils formed in loess and the underlying till. The poorly drained Clermont soils are on similar landscape positions and have an ochric epipedon. The moderately well drained Jonesboro and Rossmoyne soils and the somewhat poorly drained Schaffer and Westboro soils are on higher landscape positions.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Very poorly drained. The depth to the top of an intermittent apparent high water table ranges from 30 cm (1.0 foot) above the surface to 15 cm (0.5 foot) below the surface between December and May in normal years. The potential for surface runoff is negligible. Saturated hydraulic conductivity is moderately low. Permeability is slow.

USE AND VEGETATION: Most areas are cultivated. Principal crops are corn and soybeans. A few areas are in pasture.

DISTRIBUTION AND EXTENT: Southwestern Ohio; MLRA 114A. The series is of small extent.

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

SERIES ESTABLISHED: Clinton County, Ohio, 1999.

REMARKS: This soil was formerly mapped as Patton soils (fine-silty) in Clinton County.

With the 08/2007 revision, the type location was moved to a more representative area just south of the Cuba Moraine in Ohio.

Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon: from the surface to a depth of 46 cm (Ap, A horizons).
Cambic horizon: from a depth of 46 to 203 cm (Bg, 2Bg, and 2Bw horizons).
Aquic conditions: redox features present in all horizons within the profile.

NASIS DMU ID number 528252 represents the typical pedon. NASIS DMU ID number 129624 represents an overwash phase.

ADDITIONAL DATA: Characterization data for this soil, pedon number CT-103, is available through the Soil Characterization Laboratory at The Ohio State University, Columbus, OH.

National Cooperative Soil Survey
U.S.A.