LOCATION HYATTS OH

Established Series
Rev. RMG-PCJ
11/2021

HYATTS SERIES

The Hyatts series consists of deep, somewhat poorly drained soils formed in loamy till of medium lime content and the underlying residuum from soft, acid shale with thin strata of siltstone in some areas. These soils are on bedrock controlled ground moraines. Slope ranges from 0 to 4 percent. Mean annual precipitation is about 940 mm (37 inches), and mean annual air temperature is about 10 degrees C (50 degrees F).

TAXONOMIC CLASS: Fine, mixed, active, mesic Aeric Epiaqualfs

TYPICAL PEDON: Hyatts silt loam, on a 1 percent slope in brush (formerly cultivated) at an elevation of 290 meters (951 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

Ap--0 to 28 cm (0 to 11 inches); grayish brown (10YR 5/2) silt loam, light brownish gray (10YR 6/2) dry; moderate fine and medium granular structure; friable; many very fine and medium roots; common medium prominent strong brown (7.5YR 5/6) masses of iron accumulation in the matrix and in pores; few medium very dark grayish brown (10YR 3/2) iron and manganese nodules with diffuse boundaries in the matrix; 1 percent rock fragments; very strongly acid; abrupt smooth boundary. [15 to 36 cm (6 to 14 inches) thick]

Bt1--28 to 41 cm (11 to 16 inches); yellowish brown (10YR 5/6) silty clay loam; weak medium prismatic structure parting to moderate medium subangular blocky; firm; common fine and very fine roots; few distinct brown (10YR 5/3) clay films on faces of peds; many distinct grayish brown (10YR 5/2) clay depletions on faces of peds and in pores; few medium distinct strong brown (7.5YR 5/8) masses of iron accumulation in the matrix; many medium prominent grayish brown (10YR 5/2) iron depletions in the matrix; few medium very dark grayish brown (10YR 3/2) iron and manganese nodules with diffuse boundaries in the matrix; 1 percent rock fragments; very strongly acid; clear smooth boundary. [0 to 15 cm (6 inches) thick]

Bt2--41 to 79 cm (16 to 31 inches); strong brown (7.5YR 5/6) silty clay; weak medium prismatic structure parting to moderate medium subangular blocky; firm; common fine roots; many prominent dark grayish brown (10YR 4/2) clay films on faces of peds and in pores; common prominent grayish brown (10YR 5/2) clay depletions on faces of peds; common medium prominent grayish brown (10YR 5/2) iron depletions in the matrix; 1 percent rock fragments; strongly acid in the upper part grading to neutral in the lower part; clear wavy boundary.

Bt3--79 to 89 cm (31 to 35 inches); dark yellowish brown (10YR 4/4) silty clay loam; weak coarse subangular blocky structure; firm; few fine roots; common faint dark yellowish brown (10YR 4/4) and common distinct grayish brown (10YR 5/2) clay films on faces of peds; many medium distinct yellowish brown (10YR 5/6) masses of iron accumulation in the matrix; common medium distinct grayish brown (10YR 5/2) iron depletions in the matrix; 1 percent rock fragments; 10 percent limestone and shale pararock fragments; slightly alkaline; clear wavy boundary. [Combined thickness of the Bt horizon is 38 to 102 cm (15 to 40 inches).]

2Btk--89 to 117 cm (35 to 46 inches); variegated color pattern consisting of 40 percent yellowish brown (10YR 5/6), 40 percent grayish brown (10YR 5/2), and 20 percent yellowish red (5YR 5/6) silty clay; weak coarse prismatic structure; firm; few fine roots; many distinct gray (N 6/) clay films on faces of peds; common prominent white (N 8/) carbonate coatings on faces of peds; common distinct very dark gray (10YR 3/1) organic coatings in 5 to 10 mm thick old root channels; 10 percent pararock fragments; strongly effervescent; moderately alkaline; gradual wavy boundary. [13 to 51 cm (5 to 20 inches) thick]

2Crk--117 to 142 cm (46 to 56 inches); 50 percent yellowish brown (10YR 5/6) and 50 percent grayish brown (10YR 5/2) soft shale; many prominent white (N 8/) carbonate coatings in horizontal fractures.

TYPE LOCATION: Delaware County, Ohio; about 2 miles southwest of Harlem, in Genoa Township; 1,340 feet north and 2,530 feet west of the intersection of Smothers Rd. and Red Bank Rd.; USGS Sunbury, Ohio topographic quadrangle; lat. 40 degrees 08 minutes 00.8 seconds N. and long. 82 degrees 52 minutes 02.4 seconds W., NAD 27.

RANGE IN CHARACTERISTICS:
Depth to the paralithic contact: 102 to 152 cm (40 to 60 inches)
Thickness of the solum: 102 to 152 cm (40 to 60 inches)
Depth to the base of the argillic horizon: 102 to 152 cm (40 to 60 inches)
Depth to carbonates: 66 to 127 cm (26 to 50 inches)
Depth to the base of the ochric epipedon: 15 to 41 cm (6 to 16 inches)

Ap horizon:
Hue: 10YR or 2.5Y
Value: 4 or 5 (6 or 7 dry)
Chroma: 2 or 3
Texture: silt loam
Rock fragment content: 0 to 5 percent
Reaction: very strongly acid to neutral

Bt horizon:
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 2 to 6
Texture: silty clay loam or silty clay
Rock fragment content: 0 to 10 percent
Reaction: very strongly acid to slightly acid

2Bt, 2Btk, 2BCk, or 2BC horizon:
Hue: 5YR to 2.5Y and is often variegated
Value: 4 to 6
Chroma: 1 to 6
Texture: typically silty clay loam or silty clay, and less commonly channery silty clay loam or channery silty clay
Rock fragment content: 0 to 25 percent
Reaction: moderately acid to moderately alkaline and may contain carbonates

2Crk layer: partially weathered soft shale with thin strata of siltstone in some pedons

COMPETING SERIES: These are the Crosby, McGary, Pyrmont, and Smothers series. Crosby, McGary, and Pyrmont soils do not have a paralithic contact within a depth of 152 cm (60 inches). Smothers soils have a lithic contact at 51 to 102 cm (20 to 40 inches).

GEOGRAPHIC SETTING: Hyatts soils are on foot slopes on bedrock controlled ground moraines of Wisconsinan age. Slope ranges from 0 to 4 percent. The soils formed in loamy till of medium calcium carbonate content and the underlying residuum from soft, acid shale with thin strata of siltstone in some areas. Rock fragments in the till are mainly sandstone and shale. Mean annual precipitation ranges from 787 to 1067 mm (31 to 42 inches). Mean annual air temperature ranges from (8 to 12 degrees C 46 to 54 degrees F).

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bennington, Cardington, Rarden, and Smothers soils. The very deep Bennington soils and the moderately deep Smothers soils are on similar positions. The very deep, moderately well drained Cardington soils are on summits, shoulders, and backslopes. The moderately deep, moderately well drained Rarden soils are on similar positions or are on steeper side slopes.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Somewhat poorly drained. The depth to the top of an intermittent perched high water table ranges from 15 to 30 cm (0.5 to 1 foot) between November and May in normal years. The potential for surface runoff is low or medium. Saturated hydraulic conductivity is moderately low. Permeability is slow.

USE AND VEGETATION: Most areas were previously cleared for cropland but are now reverting to brush and trees. Some areas are in woodland. Native vegetation is mixed hardwoods.

DISTRIBUTION AND EXTENT: Central Ohio; MLRA 111E. The series is of small extent, with about 500 acres.

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

SERIES ESTABLISHED: Delaware County, Ohio, 1996.

REMARKS: The Hyatts series has been considered Bennington shale substratum soils in Delaware County and an inclusion in Mitiwanga soils in adjoining Franklin County. The former proposed name for this series was Fancher.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: from the surface to a depth of 28 cm (Ap horizon).
Argillic horizon: from a depth of 28 to 117 cm (Bt, Btk horizons).
Paralithic contact: at 117 cm (top of the Crk layer).
Aquic conditions: redox features present throughout the argillic horizon.

ADDITIONAL DATA: Laboratory characterization from The Ohio State University Characterization Laboratory data is available for DL-54, the typical pedon.

National Cooperative Soil Survey
U.S.A.