LOCATION ANTUNG IN

Established Series
Rev. GLH-RAB-DAG
11/2021

ANTUNG SERIES

The Antung series consists of very deep, very poorly drained soils formed in a thin layer of herbaceous organic material overlying sandy deposits on outwash plains, lake plains, lake terraces, flood plains, moraines, and till plains. Slope ranges from 0 to 1 percent. Mean annual precipitation is about 889 mm (35 inches), and mean annual temperature is about 10.0 degrees C (50 degrees F).

TAXONOMIC CLASS: Sandy, mixed, mesic Histic Humaquepts

TYPICAL PEDON: Antung muck, on a less than 1 percent slope in a cultivated field at an elevation of 213 meters (700 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

Oap--0 to 23 cm (9 inches); black (N 2.5/) broken face and rubbed muck; a trace of fiber unrubbed and rubbed; moderate medium granular structure; friable; common very fine and fine roots; neutral; abrupt smooth boundary.

Oa--23 to 30 cm (9 to 12 inches); black (N 2.5/) broken face and rubbed muck; a trace of fiber unrubbed and rubbed; weak medium subangular blocky structure; friable; common very fine and fine roots; neutral; abrupt smooth boundary. [Combined thickness of the Oa horizon is 18 to 41 cm (7 to 16 inches).]

Cg1--30 to 71 cm (12 to 28 inches); light brownish gray (10YR 6/2) sand; single grain; loose; many medium faint pale brown (10YR 6/3) and few medium prominent yellowish brown (10YR 5/8) masses of oxidized iron in the matrix; slightly effervescent; moderately alkaline; clear wavy boundary.

Cg2--71 to 122 cm (28 to 48 inches); light brownish gray (10YR 6/2) sand; single grain; loose; few medium prominent yellowish brown (10YR 5/8) masses of oxidized iron in the matrix; slightly effervescent; moderately alkaline; clear wavy boundary.

Cg3--122 to 203 cm (48 to 80 inches); grayish brown (10YR 5/2) coarse sand; single grain; loose; strongly effervescent; moderately alkaline.

TYPE LOCATION: Pulaski County, Indiana; about 1 1/2 miles southeast of Ripley; 2,260 feet east and 95 feet north of the southwest corner of sec. 3, T. 31 N., R. 2 W.; USGS Ripley, IN topographic quadrangle; lat. 41 degrees 5 minutes 5.1 seconds N. and long. 86 degrees 37 minutes 58.3 seconds W., NAD 27; UTM Zone 16, 530837 easting and 4548233 northing, NAD 83.

RANGE IN CHARACTERISTICS:
Depth to the sandy C horizon: 18 to 41 cm (7 to 16 inches)
Organic fibers: derived primarily from herbaceous plants, but some layers contain material of woody origin

Oap or Oa horizon:
Hue: 10YR or N
Value: 2, 2.5, or 3
Chroma: 0 to 2 in the Oap horizon; 0 to 3 in the Oa horizon
Texture: muck
Reaction: slightly acid to neutral

Cg horizon:
Hue: 10YR or 2.5Y
Value: 4 to 6
Chroma: 1 or 2
Texture: sand, coarse sand, fine sand, or loamy sand, or their gravelly analogues
Rock fragment content: 0 to 25 percent
Reaction: neutral to moderately alkaline

COMPETING SERIES: These are the Ackerman and Scarboro series. Ackerman soils have coprogenous earth underlying the organic horizons. Scarboro soils are more acid than slightly acid in the organic horizons and upper part of the C horizon.

GEOGRAPHIC SETTING: Antung soils are in shallow closed depressions primarily on outwash plains, lake plains, lake terraces, and flood plains, but can occur within moraines and till plains. Slope ranges from 0 to 1 percent. Antung soils formed in a thin layer of herbaceous organic material overlying sandy deposits. Typically the adjacent soils are sandy. Mean annual precipitation ranges from 762 to 1067 mm (30 to 42 inches). Mean annual temperature ranges from 8.9 to 11.7 degrees C (48 to 53 degrees F). Frost-free period is 130 to 180 days. Elevation is 177 to 427 meters (580 to 1,400 feet) above mean sea level.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Adrian, Edselton, Gilford, Granby, Houghton, Madaus, and Newton soils. The very poorly drained Adrian, Edselton, Houghton, and Madaus soils are on similar landform positions as the Antung soils. Adrian and Houghton soils formed in more than 41 cm (16 inches) of herbaceous organic deposits. Edselton and Madaus soils are underlain by marl and sand. The poorly drained or very poorly drained Gilford and Granby soils, and the very poorly drained Newton soils are sandy or loamy throughout, and generally are at the margins of depressions.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Very poorly drained. Depth to the top of an apparent seasonal high water table ranges from 30 cm (1 foot) above the surface to 30 cm (1 foot) below the surface between November and May in normal years. Where these soils are on flood plains the water table may be more that 30 cm (1 foot) above the surface when the associated stream overflows its banks. Potential for surface runoff is negligible. Saturated hydraulic conductivity is moderately high or high in the organic material and high or very high in the sandy material. Permeability is moderately slow to moderately rapid in the organic material and rapid in the sandy material.

USE AND VEGETATION: Most of these soils are drained and used for cultivated crops. Common crops include corn and soybeans, with small areas in mint, hay and pasture. Undrained areas are in native vegetation. Native vegetation is marsh grasses such as sedges and reeds; and shrubs and trees such as willow, cottonwood, and soft maple.

DISTRIBUTION AND EXTENT: MLRAs 97, 98, and 111C in northern Indiana. The series is of small extent.

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

SERIES ESTABLISHED: Pulaski County, Indiana, 2001.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Histic epipedon: muck from the surface to a depth of 30 cm (12 inches) (Oap, Oa).
Aquic conditions: accumulation of organic material at the surface and redoximorphic features in all horizons below 30 cm (12 inches).

The Antung series was proposed for the Adrian soils with less than 41 cm (16 inches) of muck mapped in the Pulaski County, Indiana soil survey update. Drained and undrained phases are recognized.

NASIS Data Mapunit ID 152934 represents the drained phase and is the typical pedon.
NASIS Data Mapunit ID 152935 represents the undrained phase.

ADDITIONAL DATA: Lab characterization data is available for the typical pedon (S99IN-131-003) from the National Soil Survey Laboratory, Lincoln, NE. Transect data (T99IN-131-020) is on file in the MLRA project office in Plymouth, Indiana. Transect shows 90 percent Antung and 10 percent Madaus soils.

National Cooperative Soil Survey
U.S.A.