LOCATION GREYBROOK               IN

Established Series
Rev. BGN-KKN
11/2021

GREYBROOK SERIES


The Greybrook series consists of very deep, well drained soils that formed in loess and in the underlying paleosol in lacustrine deposits. The soils are on dissected lake plains. Slope ranges from 18 to 35 percent. Mean annual precipitation is about 1118 mm (44 inches), and mean annual air temperature is about 12 degrees C (54 degrees F).

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

TYPICAL PEDON: Greybrook silt loam, on a 35 percent slope in a forest at an elevation of about 229 meters (750 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

A1--0 to 5 cm (0 to 2 inches); dark brown (10YR 3/3) silt loam, brown (10YR 5/3) dry; weak fine granular structure; friable; many very fine and fine roots; many very fine interstitial pores; very strongly acid; abrupt smooth boundary. [2 to 8 cm (1 to 3 inches) thick]

A2--5 to 13 cm (2 to 5 inches); brown (10YR 4/3) silt loam; weak very fine subangular blocky structure; friable; many very fine and fine roots; common very fine interstitial pores; 5 percent dark brown (10YR 3/3) silt loam filling channels and pores; very strongly acid; clear wavy boundary. [0 to 10 cm (0 to 4 inches) thick]

E--13 to 25 cm (5 to 10 inches); yellowish brown (10YR 5/4) silt loam; weak fine subangular blocky structure; friable; common very fine and fine roots; common very fine vesicular and tubular pores; very strongly acid; clear wavy boundary. [8 to 18 cm (3 to 7 inches) thick]

BE--25 to 38 cm (10 to 15 inches); dark yellowish brown (10YR 4/4) silt loam; weak medium subangular blocky structure; friable; common very fine and fine roots; common very fine vesicular and tubular pores; very strongly acid; gradual wavy boundary. [8 to 18 cm (3 to 7 inches) thick]

2Bt1--38 to 63 cm (15 to 25 inches); yellowish brown (10YR 5/4) silt loam; moderate medium subangular blocky structure; friable; few very fine and fine roots; few very fine vesicular and tubular pores; many distinct dark yellowish brown (10YR 4/4) clay films on faces of peds and in pores; 1 percent fine gravel; very strongly acid; clear wavy boundary.

2Bt2--63 to 89 cm (25 to 35 inches); light yellowish brown (10YR 6/4) clay loam; many fine distinct grayish brown (10YR 5/2) mottles; moderate medium subangular blocky structure; firm; few very fine vesicular and tubular pores; many distinct dark brown (10YR 3/3) clay films on faces of peds and in pores; 2 percent fine gravel; very strongly acid; gradual wavy boundary.

2Bt3--89 to 132 cm (35 to 52 inches); strong brown (7.5YR 5/8) clay loam; many medium prominent grayish brown (10YR 5/2) mottles; moderate medium and coarse subangular blocky structure; firm; many distinct grayish brown (10YR 5/2) clay films on faces of peds and in pores; 4 percent fine gravel; moderately acid; gradual wavy boundary.

2Btg--132 to 157 cm (52 to 62 inches); gray (10YR 6/1) loam; weak coarse prismatic structure; firm; many distinct light brownish gray (10YR 6/2) clay films on faces of peds and in pores; few fine distinct light yellowish brown (10YR 6/4) and prominent brown (7.5YR 5/4) masses of oxidized iron in the matrix; 2 percent fine gravel; neutral; clear wavy boundary. [Combined thickness of the 2Bt horizon is 114 to 152 cm (45 to 60 inches).]

2Cg--157 to 203 cm (62 to 80 inches); light brownish gray (2.5Y 6/2) stratified silt, silty clay loam, and clay loam; massive; firm; many coarse prominent strong brown (7.5YR 5/6) masses of oxidized iron in the matrix; 1 percent fine gravel; strongly effervescent in places; slightly alkaline.

TYPE LOCATION: Owen County, Indiana; about 1.5 miles northwest of Quincy; 2,700 feet west and 1,200 feet south of the northeast corner of sec. 22, T. 12 N., R. 3 W.; USGS Quincy, Ind. topographic quadrangle; lat. 39 degrees 28 minutes 1.721 seconds N. and long. 86 degrees 44 minutes 3.404 seconds W.; UTM Zone 16, 522850.764 easting and 4368648.038 northing, NAD 83.

RANGE IN CHARACTERISTICS:
Depth to the base of the argillic horizon: 140 to 203 cm (55 to 80 inches)
Thickness of the loess: 25 to 51 cm (10 to 20 inches)
Particle-size control section: averages 22 to 30 percent clay, 15 to 27 percent fine or coarser sand, and less than 5 percent coarse and very coarse sand

A horizon:
Hue: 10YR
Value: 3 or 4
Chroma: 2 or 3
Texture: silt loam
Reaction: very strongly acid in unlimed areas, and ranges to neutral in limed areas

BE or E horizon:
Hue: 10YR
Value: 4 to 6
Chroma: 4 to 6
Texture: silt loam
Clay content: 15 to 27 percent
Sand content: 5 to 15 percent
Reaction: very strongly acid in unlimed areas, and ranges to neutral in limed areas

2Bt or 2Btg horizon:
Hue: 7.5YR, 10YR, or 2.5Y
Value: 5 or 6
Chroma: 1 to 8
Texture: clay loam, loam, or silt loam
Clay content: 18 to 35 percent
Sand content: 15 to 40 percent
Rock fragment content: 0 to 5 percent (fine gravel)
Reaction: very strongly acid or strongly acid in the upper part and ranges to neutral in the lower part

2Cg or 2C horizon:
Hue: 10YR or 2.5Y
Value: 5 or 6
Chroma: 2 to 6
Texture: stratified; strata include silt loam, loam, clay loam, and silty clay loam, with minor strata of silt
Clay content: 18 to 35 percent
Sand content: 10 to 40 percent
Rock fragment content: 0 to 5 percent fine gravel
Reaction: neutral or slightly alkaline

COMPETING SERIES: These are the Amanda, Belmont, Belmore, Caprell, Chili, Cliftycreek, Conestoga, Crouse, Gallman, Hickory, High Gap, Hollinger, Kanawha, Kidder, Kosciusko, LeRoy, Lumberton, Martinsville, Military, Mocksville, Ockley, Pignut, Princeton, Relay, Richardville, Riddles, Senachwine, Skelton, Strawn, Wawaka, Wawasee, and Woodbine series. Amanda, Belmore, Caprell, Chili, Hollinger, Kidder, Kosciusko, LeRoy, Mocksville, Relay, Senachwine, Strawn, and Wawasee soils have the depth to the base of the argillic horizon at less than 140 cm (55 inches). Belmont, High Gap, Lumberton, Military, Pignut, and Woodbine soils have a lithic contact within a depth of 152 cm (60 inches). Cliftycreek soils have more than 35 percent clay in the lower part of the series control section. Conestoga, Ockley, and Wawaka soils average more than 5 percent rock fragments in the lower part of the series control section. Crouse, Hickory, Kanawha, and Martinsville soils average more than 5 percent coarse and very coarse sand in the particle-size control section. Gallman soils have rock fragments of dominantly shale lithology in the lower part of the series control section. Princeton, Richardville, and Riddles soils average more than 40 percent sand in the lower part of the series control section. Skelton soils have a reaction that is more acid than neutral in the lower part of the series control section.

GEOGRAPHIC SETTING: Greybrook soils are on backslopes of dissected lake plains of Illinoian age. Slope ranges from 18 to 35 percent. The soils formed in 25 to 51 cm (10 to 20 inches) of loess and in the underlying paleosol in lacustrine deposits. Mean annual precipitation ranges from 1067 to 1143 mm (42 to 45 inches). Mean annual air temperature ranges from 12 to 13 degrees C (53 to 56 degrees F). Frost-free period is 170 to 200 days. Elevation is 152 to 244 meters (500 to 800 feet) above mean sea level.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dubois, Haubstadt, Otwell and Peoga on lake plains. The somewhat poorly drained Dubois soils and the poorly drained Peoga soils are on flats. The moderately well drained Haubstadt soils are on summits and shoulders. The moderately well drained Otwell soils are on summits, shoulders, and backslopes.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well drained. The potential for surface water runoff is high or very high. Saturated hydraulic conductivity is moderately high in the upper part of the solum and moderately low in the lower part. Permeability is moderate in the upper part of the solum and slow in the lower part.

USE AND VEGETATION: Most areas are used for woodland. A few areas are used for pasture. Native vegetation is deciduous hardwood forest.

DISTRIBUTION AND EXTENT: MLRA 114B in southern Indiana. This series is of small extent.

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

SERIES ESTABLISHED: Owen County, Indiana, 1997.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: from the surface to a depth of 38 cm (15 inches)(A1, A2, E, BE horizons).
Argillic horizon: from a depth of 38 to 157 cm (15 to 62 inches) (2Bt, 2Btg horizons).
Relic redoximorphic features: at 63 to 203 cm (25 to 80 inches). The mottles and matrix colors with chroma of 1 or 2 and the iron concentrations are relic features which do not indicate present drainage conditions.

These soils were mapped Otwell, calcareous substratum, in the 1964 Owen County Soil Survey.

ADDITIONAL DATA: Laboratory data available at the National Soil Survey Lab, Lincoln, NE for the typical pedon S91IN-119-45.


National Cooperative Soil Survey
U.S.A.