LOCATION OGONTZ OH

Established Series
Rev. NHM-JAG-RAR
09/2012

OGONTZ SERIES

The Ogontz series consists of very deep, moderately well drained soils formed in calcareous, stratified loamy and silty glaciolacustrine deposits on lake plains and deltas. Slope ranges from 0 to 6 percent. Mean annual precipitation is about 864 mm (34 inches), and mean annual air temperature is about 11 degrees C (51 degrees F).

TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Aquic Hapludalfs

TYPICAL PEDON: Ogontz fine sandy loam, 0 to 2 percent slopes, in a cultivated field at an elevation of 186 meters (610 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 25 cm (0 to 10 inches); dark grayish brown (10YR 4/2) fine sandy loam, light brownish gray (10YR 6/2) dry; weak medium and fine granular structure; friable; common fine and very fine roots; neutral; abrupt wavy boundary. [18 to 30 cm (7 to 12 inches) thick]

BE--25 to 30 cm (10 to 12 inches); yellowish brown (10YR 5/4) loam; weak medium and fine subangular blocky structure; friable; few very fine roots; common faint light yellowish brown (10YR 6/4) clay depletions on faces of peds; few fine faint pale brown (10YR 6/3) iron depletions in the matrix; common medium distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; neutral; clear wavy boundary. [0 to 15 cm (6 inches) thick]

Bt1--30 to 43 cm (12 to 17 inches); yellowish brown (10YR 5/4) silt loam; moderate medium and fine angular blocky structure; friable; few very fine roots; many faint brown (10YR 5/3) clay films and coatings on faces of peds; few medium distinct grayish brown (10YR 5/2) iron depletions in the matrix; common medium faint dark yellowish brown (10YR 4/4) masses of iron accumulation in the matrix; common fine distinct black (10YR 2/1) iron and manganese concretions throughout; neutral; clear wavy boundary. [8 to 20 cm (3 to 8 inches) thick]

Bt2--43 to 61 cm (17 to 24 inches); dark yellowish brown (10YR 4/4) silty clay loam; moderate medium and coarse angular blocky structure; firm; few very fine roots; common distinct grayish brown (10YR 5/2) clay films and coatings on faces of peds; common medium distinct yellowish brown (10YR 5/6) masses of iron accumulation and grayish brown (10YR 5/2) iron depletions in the matrix; common fine distinct black (10YR 2/1) iron and manganese concretions throughout; neutral; gradual wavy boundary.

Bt3--61 to 76 cm (24 to 30 inches); dark yellowish brown (10YR 4/4) silt loam; moderate medium and coarse angular blocky structure; friable; few very fine roots; common distinct grayish brown (10YR 5/2) clay films and coatings on faces of peds; many medium distinct yellowish brown (10YR 5/6) masses of iron accumulation and grayish brown (10YR 5/2) iron depletions in the matrix; slightly alkaline; clear wavy boundary. [Combined thickness of the 2Bt horizon is 20 to 61 cm (8 to 24 inches).]

BC--76 to 91 cm (30 to 36 inches); brown (10YR 4/3) silt loam with thin strata of silty clay loam; weak coarse subangular blocky structure; friable; few very fine roots; common medium distinct gray (10YR 5/1) iron depletions and yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; few distinct light gray (10YR 7/1) calcium carbonate accumulations; strongly effervescent; moderately alkaline; gradual wavy boundary. [0 to 38 cm (15 inches) thick]

C1--91 to 152 cm (36 to 60 inches); brown (10YR 4/3) silt loam with thin strata of silty clay loam; massive; friable; common medium distinct gray (10YR 5/1) iron depletions in the matrix; common medium prominent strong brown (7.5YR 5/6) and common medium distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; few distinct light gray (10YR 7/1) calcium carbonate accumulations; strongly effervescent; moderately alkaline; gradual wavy boundary.

C2--152 to 203 cm (60 to 80 inches); brown (10YR 5/3) silt loam stratified with thin strata of very fine sandy loam; massive; friable; common medium faint grayish brown (10YR 5/2) iron depletions in the matrix; common coarse prominent strong brown (7.5YR 5/6) masses of iron accumulation in the matrix; strongly effervescent; moderately alkaline.

TYPE LOCATION: Erie County, Ohio; about 2 miles southeast of Huron, in Huron Township; approximately 1,050 feet northwest of the intersection of Berlin Rd. (County Rd. 132) and State Route 2 along Berlin Rd., then 1,125 feet west; USGS Milan, Ohio topographic quadrangle; lat. 41 degrees 22 minutes 12.6 seconds N. and long. 82 degrees 31 minutes 40.2 seconds W., NAD 27.

RANGE IN CHARACTERISTICS:
Depth to the base of the argillic horizon: 61 to 94 cm (24 to 37 inches)
Thickness of the solum: 76 to 102 cm (30 to 40 inches)
Depth to carbonates: 61 to 122 cm (24 to 48 inches)
Particle-size control section: averages 20 to 30 percent clay and less than 15 percent sand

Ap horizon:
Hue: 10YR
Value: 4 or 5
Chroma: 2 or 3
Texture: fine sandy loam or silt loam
Sand content: averages 15 to 45 percent sand coarser than very fine sand
Rock fragment content: 0 to 2 percent
Reaction: moderately acid to neutral

BE horizon:
Hue: 10YR
Value: 5 or 6
Chroma: 3 or 4
Texture: loam or silt loam
Sand content: averages 15 to 45 percent sand coarser than very fine sand
Rock fragment content: 0 to 2 percent
Reaction: moderately acid to neutral

Bt horizon:
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 3 to 6
Texture: silt loam or silty clay loam; some pedons have thin lenses of fine sandy loam or very fine sandy loam in the lower part
Rock fragment content: 0 to 2 percent
Reaction: neutral or slightly alkaline

BC horizon:
Hue: 10YR
Value: 4 or 5
Chroma: 3 or 4
Texture: dominantly silt loam, with strata of silty clay loam, very fine sandy loam, or fine sandy loam in some pedons
Rock fragment content: 0 to 2 percent
Reaction: neutral to moderately alkaline

C horizon:
Hue: 10YR
Value: 4 to 6
Chroma: 2 to 6
Texture: stratified; silt loam, silty clay loam or fine sandy loam are the dominant textures, with thin strata of very fine sandy loam, loamy fine sand, or loamy very fine sand
Rock fragment content: 0 to 10 percent
Reaction: typically moderately alkaline, but is slightly alkaline in some pedons

COMPETING SERIES: These are the Hartz, Henshaw, Higdon, Lykens, Sardinia, and Travilah series. Hartz soils are more than 94 cm (37 inches) to the base of the argillic horizon. Henshaw, Higdon, and Sardinia soils have sola thicker than 102 cm (40 inches). Lykens soils do not have strata with less than 18 percent clay and more than 50 percent sand in the lower part of the series control section. Travilah soils have a lithic contact within a depth of 102 cm (40 inches).

GEOGRAPHIC SETTING: Ogontz soils are on nearly level and slightly dissected lake plains and deltas of Wisconsinan age. Slope ranges from 0 to 6 percent. The soils formed in calcareous, stratified loamy and silty glaciolacustrine deposits. Mean annual precipitation ranges from 686 to 914 mm (27 to 36 inches). Mean annual air temperature ranges from 6 to 11 degrees C (42 to 52 degrees F). Mean summer air temperature is about 21 degrees C (70 degrees F). Frost-free period is 140 to 165 days. Elevation is 183 to 229 meters (600 to 750 feet) above mean sea level.

GEOGRAPHICALLY ASSOCIATED SOILS: The well drained Zurich and the somewhat poorly drained Aptakisic soils are in a drainage sequence with Ogontz soils. Tuscola and Bixler soils occupy similar landforms and are common associates.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained. The depth to the top of an intermittent apparent high water table ranges from 46 to 91 cm (1.5 to 3 feet) between November and May in normal years. The potential for surface runoff is negligible or low. Saturated hydraulic conductivity is moderately high. Permeability is moderate.

USE AND VEGETATION: Most areas have been cleared and are used for cropland. Corn, soybeans and small grains are the principal crops. Native vegetation is deciduous forest.

DISTRIBUTION AND EXTENT: North central and northwestern Ohio; MLRA 99. The series is of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: AMHERST, MASSACHUSETTS

SERIES ESTABLISHED: Erie County, Ohio, 1998.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: from the surface to a depth of 30 cm (Ap, BE horizons).
Argillic horizon: from a depth of 30 to 76 cm (Bt horizon).
Aquic conditions: iron depletions with chroma of 1 or 2 in all horizons below a depth of 30 cm.

These soils were formerly included with Tuscola soils in mapping in the Erie County Soil Survey published in 1971.

ADDITIONAL DATA: Laboratory characterization data is available for ER-43, the typical pedon, from The Ohio State University Soil Characterization Laboratory, Columbus, OH.

National Cooperative Soil Survey
U.S.A.