LOCATION ROLLAWAY                MI

Established Series
Rev. RWN-EPJ-MLK
08/2012

ROLLAWAY SERIES

The Rollaway series consists of very deep, poorly drained or very poorly drained soils formed in stratified alluvium over clayey lacustrine deposits on flood plains. Slope ranges from 0 to 2 percent. Mean annual precipitation is about 737 mm (29 inches), and mean annual temperature is about 6.7 degrees C (44 degrees F).

TAXONOMIC CLASS: Coarse-loamy, mixed, semiactive, nonacid, frigid Histic Humaquepts

TYPICAL PEDON: Rollaway muck, on a nearly level slope at an elevation of 216 meters (710 feet) above mean sea level. (Colors are for moist soil unless otherwise noted. Described on October 3, 1990.)

Oa--0 to 23 cm (9 inches); very dark gray (10YR 3/1) broken face and black (10YR 2/1) rubbed muck; about 30 percent fiber, 5 percent rubbed; weak fine granular structure; friable; many fine roots; about 15 percent mineral; slightly acid; abrupt smooth boundary. [20 to 36 cm (8 to 14 inches) thick]

A--23 to 33 cm (9 to 13 inches); black (10YR 2/1) silt loam; very dark gray (10YR 3/1) dry; moderate medium subangular blocky structure; friable; many fine roots; common fine prominent yellowish red (5YR 4/6) and dark reddish brown (5YR 3/4) masses of oxidized iron; slightly acid; abrupt smooth boundary. [0 to 15 cm (6 inches) thick]

Cg1--33 to 46 cm (13 to 18 inches); dark gray (10YR 4/1) silt loam; weak medium platy structure; friable; common fine prominent strong brown (7.5YR 4/6) masses of oxidized iron; neutral; abrupt smooth boundary.

Cg2--46 to 140 cm (18 to 55 inches); stratified dark grayish brown (10YR 4/2) and black (10YR 2/1) loamy sand and sandy loam; massive; friable; neutral; abrupt smooth boundary. [Combined thickness of the Cg horizon is 56 to 102 cm (22 to 40 inches).]

2Cg3--140 to 203 cm (55 to 80 inches); brown (7.5YR 5/2) silty clay; massive; firm; strongly effervescent; moderately alkaline.

TYPE LOCATION: Alcona County, Michigan; about 3 miles north of Harrisville; 140 feet south and 2,210 feet west of the northeast corner of sec. 22, T. 27 N., R. 9 E., Haynes Township; USGS Harrisville topographic quadrangle; lat. 44 degrees 43 minutes 43 seconds N. and long. 83 degrees 19 minutes 53 seconds W.

RANGE IN CHARACTERISTICS:
Depth to the lithologic discontinuity (clayey substratum) 102 to 152 cm (40 to 60 inches)
Depth to carbonates: 102 to 152 cm (40 to 60 inches)
Mean annual soil temperature: 7.2 to 8.3 degrees C (45 to 47 degrees F)
Particle-size control section: averages 6 to 18 percent clay and 40 to 80 percent sand

Oa horizon:
Hue: 7.5YR or 10YR, or is neutral
Value: 2, 2.5, or 3
Chroma: 0 or 1
Reaction: moderately acid to neutral

A horizon:
Hue: 10YR or is neutral
Value: 2, 2.5, or 3
Chroma: 0 or 1
Texture: silt loam
Reaction: slightly acid or neutral

C horizon:
Hue: 7.5YR, 10YR, or 5Y
Value: 2 to 6
Chroma: 1 to 3
Texture: silt loam or stratified sand and sandy loam
Reaction: slightly acid to moderately alkaline

2C horizon:
Texture: silty clay or clay
Clay content: 40 to 60 percent

COMPETING SERIES: This is the Witbeck series. Witbeck soils do not have textures with as much as 40 percent clay in the lower part of the series control section.

GEOGRAPHIC SETTING: Rollaway soils are on flood plains. Slope ranges from 0 to 2 percent. These soils formed in stratified sandy to silty alluvium over clayey lacustrine deposits. Mean annual precipitation is about 686 to 762 mm (27 to 30 inches). Mean annual temperature ranges from 6.1 to 7.2 degrees C (43 to 45 degrees F). Frost-free period is 70 to 130 days. Elevation is 183 to 244 meters (600 to 800 feet) above mean sea level.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cublake, Allendale, and Wakeley soils. The moderately well drained Cublake soils and the somewhat poorly drained Allendale soils have sandy spodic horizons and are on adjacent upland positions. The Wakeley soils are sandy in the upper part and are in adjacent depressions.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Poorly drained or very poorly drained. The depth to the top of an apparent seasonal high water table ranges from 61 cm (2 feet) above the surface to 30 cm (1.0 foot) below the surface at any time during normal years. Potential surface runoff is negligible or very low. Saturated hydraulic conductivity is moderately high in the upper part and low in the lower part. Permeability is moderate in the upper part and very slow in the lower part. The soil is subject to frequent, brief to very long periods of flooding from March to May.

USE AND VEGETATION: Most areas of Rollaway soils are forested. Black ash, balsam fir, northern white cedar, black spruce, red maple, quaking aspen, speckled alder, redosier dogwood, and sedge are the principal plant species.

DISTRIBUTION AND EXTENT: MLRA 94A in northeastern lower Michigan. This series is of small extent.

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

SERIES ESTABLISHED: Iosco County, Michigan, 1995.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Histic epipedon: from the surface to a depth of 23 cm (9 inches) (Oa horizon).
Aquic conditions: redoximorphic features present throughout the profile.

ADDITIONAL DATA: Soil Interpretations Record: MI0485.

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National Cooperative Soil Survey
U.S.A.