LOCATION DEBOLT                  MI

Established Series
Rev. SWT-JMQ-MLK
08/2012

DEBOLT SERIES

The Debolt series consists of very deep, moderately well drained soils formed in clayey glaciofluvial deposits overlying sandy glaciofluvial deposits on lake plains. Slope ranges from 0 to 3 percent. Mean annual precipitation is about 762 mm (30 inches), and the mean annual temperature is about 5.6 degrees C (42 degrees F).

TAXONOMIC CLASS: Clayey over sandy or sandy-skeletal, mixed, semiactive, frigid Oxyaquic Glossudalfs

TYPICAL PEDON: Debolt sandy loam, in permanent pasture on a lake plain at an elevation of 361 meters (1,183 feet) above mean sea level. (Colors are for moist soil unless otherwise stated.)

A--0 to 8 cm (3 inches); very dark grayish brown (10YR 3/2) sandy loam, dark grayish brown (10YR 4/2) dry; strong medium granular structure parting to strong fine granular; friable; many very fine and common fine and medium roots; 1 percent gravel; moderately acid; abrupt smooth boundary. [8 to 15 cm (3 to 6 inches) thick]

E--8 to 18 cm (3 to 7 inches); 55 percent grayish brown (10YR 5/2) and 45 percent pinkish gray (7.5YR 6/2) sandy loam, light brownish gray (10YR 6/2) and white (7.5YR 8/1) dry; moderate medium subangular blocky structure parting to strong fine subangular blocky; friable; common very fine to medium roots; few distinct brown (7.5YR 5/2) silt coats on vertical faces of peds; moderately acid; clear broken boundary. [5 to 13 cm (2 to 5 inches) thick]

B/E--18 to 25 cm (7 to 10 inches); brown (7.5YR 4/4) clay loam (Bt); occurs about 77 percent of the horizon surrounded by grayish brown (10YR 5/2) sandy loam (E), light gray (10YR 7/2) dry; strong medium subangular blocky structure; firm; common very fine to medium roots; common very fine low continuity tubular pores; very few prominent black (7.5YR 2.5/1) organic coatings on vertical faces of peds; common distinct brown (7.5YR 4/3) clay films on vertical faces of peds; 1 percent gravel; moderately acid; clear wavy boundary. [5 to 10 cm (2 to 4 inches) thick]

Bt1--25 to 46 cm (10 to 18 inches); brown (7.5YR 4/4) clay; strong medium angular blocky structure; firm; common very fine and fine roots; common very fine low continuity tubular pores; very few prominent black (7.5YR 2.5/1) organic coatings on vertical faces of peds; common distinct brown (7.5YR 4/3) clay films on vertical and horizontal faces of peds; 1 percent mixed gravel; moderately acid; clear wavy boundary.

Bt2--46 to 71 cm (18 to 28 inches); brown (7.5YR 5/4) clay; strong coarse angular blocky structure parting to strong medium angular blocky; firm; common very fine and fine roots; common very fine low continuity tubular pores; common distinct brown (7.5YR 4/3) clay films on vertical and horizontal faces of peds; few fine distinct strong brown (7.5YR 5/6) masses of oxidized iron; 1 percent gravel; strongly acid; clear wavy boundary. [Combined thickness of the Bt horizon is 25 to 81 cm (10 to 32 inches).]

Bt3--71 to 84 cm (28 to 33 inches); strong brown (7.5YR 5/6) sandy clay loam; strong coarse subangular blocky structure parting to moderate medium subangular blocky; firm; common very fine roots; few distinct brown (7.5YR 5/4) clay films on vertical faces of peds; common distinct strong brown (7.5YR 5/6) clay bridging on vertical and horizontal faces of peds; common fine and medium faint strong brown (7.5YR 5/6) masses of oxidized iron; 2 percent gravel; strongly acid; abrupt wavy boundary. [0 to 20 cm (8 inches) thick]

2C1--84 to 142 cm (33 to 56 inches); yellowish brown (10YR 5/4) sand; single grain; loose; common fine and medium prominent dark reddish brown (5YR 3/3) and distinct reddish brown (5YR 4/4) masses of oxidized iron; 1 percent gravel; moderately acid; gradual wavy boundary.

2C2--142 to 165 cm (56 to 65 inches); light yellowish brown (10YR 6/4) sand; single grain; loose; common fine prominent reddish brown (5YR 4/4) masses of oxidized iron; 1 percent gravel; slightly acid; gradual wavy boundary.

2C3--165 to 203 cm (65 to 80 inches); brown (7.5YR 5/4) sand and pale brown (10YR 6/3) loamy sand; single grain; loose; common medium and coarse distinct brownish yellow (10YR 6/6) and many medium and coarse faint yellowish brown (10YR 5/4) masses of oxidized iron; 1 percent gravel; neutral.

TYPE LOCATION: Roscommon County, Michigan; about 350 feet south and 650 feet west of the northeast corner of sec. 23, T. 24 N., R. 1 W., Au Sable Township; USGS St. Helen NW 7.5 topographic quadrangle; lat. 44 degrees 27 minutes 50 seconds N. and long. 84 degrees 23 minutes 31 8 seconds W.

RANGE IN CHARACTERISTICS:
Depth to the base of the argillic horizon: 51 to 102 cm (20 to 40 inches)
Rock fragment content: 1 to 5 percent gravel in the upper part and 0 to 10 percent in the lower part.
Reaction: strongly acid to neutral throughout
Particle-size control section: averages 35 to 50 percent clay

A horizon:
Hue: 10YR
Value: 2 or 3
Chroma: 1 or 2
Texture: loam or sandy loam

Ap horizon, where present:
Thickness: 15 to 25 cm (6 to 10 inches)

E horizon and E part of the B/E horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6
Chroma: 2 or 3
Texture: sandy loam or loam

Bt part of the Bt/E horizon and upper part of the Bt horizon:
Hue: 7.5YR or 10YR
Value: 3 to 5
Chroma: 4 to 6
Texture: clay, clay loam, silty clay loam, or silty clay

Lower part of the Bt horizon:
Hue: 7.5YR or 10YR
Value: 3 to 5
Chroma: 4 to 6
Texture: sandy clay loam, clay loam or sandy clay; thin lenses of loamy fine sand and fine sandy loam are in some pedons

2C horizon:
Hue: 7.5YR or 10YR
Value: 5 or 6
Chroma: 4 to 6
Texture: dominantly sand but includes loamy sand or thin strata of loamy sand

COMPETING SERIES: There are no other series in the same family.

GEOGRAPHIC SETTING: Debolt soils are on lake plains of Wisconsinan age. Slope ranges from 0 to 3 percent. The Debolt soils formed in clayey glaciofluvial deposits overlying sandy glaciofluvial deposits. Mean annual precipitation ranges from 711 to 813 mm (28 to 32 inches). Mean annual temperature ranges from 4.4 to 6.7 degrees C (40 to 44 degrees F). Frost-free period is 100 to 120 days.

GEOGRAPHICALLY ASSOCIATED SOILS: The well drained Dighton soils are on slightly higher landform positions. The moderately well drained Kellogg soils are on similar landform positions. The somewhat poorly drained Pinewood soils are on slightly lower landform positions. The poorly drained or very poorly drained Wakeley soils are in nearby depressions and narrow drainageways.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Moderately well drained. The potential for surface runoff is low or medium. Saturated hydraulic conductivity is moderately high in the upper part and high or very high in the lower part. Permeability is moderately slow in the upper part and rapid or very rapid in the lower part.

USE AND VEGETATION: Most areas are idle or in pasture. A smaller part is in forest. Native vegetation is chiefly sugar maple, American beech, American basswood, American elm, and some eastern white pine and eastern hemlock.

DISTRIBUTION AND EXTENT: MLRA 94A in northern Lower Peninsula of Michigan. The series is of small extent.

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

SERIES ESTABLISHED: Roscommon County, Michigan, 1998.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon: from the surface to a depth of 18 cm (7 inches) (A and E horizon).
Glossic horizon: from a depth of 18 to 25 cm (7 to 10 inches) (B/E horizon).
Albic horizon: from a depth of 8 to 18 cm (3 to 7 inches) (E horizon).
Argillic horizon: from a depth of 18 to 84 cm (7 to 33 inches) (Bt part of the B/E and Bt horizons).
Oxyaquic feature - saturation at depths greater than 46 cm (18 inches) inferred from redox concentrations.
Strongly contrasting particle-size class: from clayey to sandy at 84 cm (33 inches) (2C horizon).

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National Cooperative Soil Survey
U.S.A.