LOCATION FIBRE MI
Established Series
Rev. GDW-WEF
07/2012
FIBRE SERIES
The Fibre series consists of very deep, poorly drained soils on lake plains and outwash plains. They formed in sandy sediments and the underlying clayey deposits. Permeability is rapid in the sandy layers and very slow in the clayey layers. Slopes range from 0 to 2 percent. Mean annual precipitation is about 31 inches, and mean annual temperature is about 42 degrees F.
TAXONOMIC CLASS: Sandy over clayey, mixed, semiactive, frigid Alfic Epiaquods
TYPICAL PEDON: Fibre muck - in a forested area of black spruce and balsam fir. (Colors are for moist soil unless otherwise stated.)
Oa--0 to 5 inches; black (N 2/0) muck; weak fine granular structure; friable; many fine to coarse roots; very strongly acid; abrupt smooth boundary. (0 to 6 inches thick)
E--5 to 13 inches; brown (10YR 5/3) sand; few fine faint brown (10YR 4/3) mottles; weak fine subangular blocky structure; very friable; common fine and medium roots; very strongly acid; abrupt wavy boundary. (1 to 10 inches thick)
Bs--13 to 17 inches; dark brown (7.5YR 3/4) sand; common medium distinct dark brown (7.5YR 3/2) mottles; weak fine subangular blocky structure; very friable; common fine and medium roots; few distinct cracked coatings on sand grains; neutral; abrupt smooth boundary. (4 to 15 inches thick)
E/B--17 to 19 inches; about 60 percent reddish brown (5YR 5/3) loamy sand (E); surrounding peds of reddish brown (5YR 5/4) fine sandy loam (Bt); common medium prominent strong brown (7.5YR 5/6) and few medium prominent yellowish brown (10YR 5/6) mottles; weak medium subangular blocky structure; firm; few fine roots; neutral; abrupt smooth boundary. (0 to 5 inches thick)
2Bt--19 to 27 inches; reddish brown (5YR 5/4) clay; common medium distinct yellowish red (5YR 4/6) and common medium prominent greenish gray (5G 5/1) mottles; moderate very fine subangular blocky structure; firm; few fine roots; many fine and very fine vesicular pores; few faint reddish brown (5YR 5/3) clay films on faces of peds; mildly alkaline; clear wavy boundary. (7 to 10 inches thick)
2C--27 to 60 inches; stratified reddish brown (5YR 4/4 and 5/3) clay; with thin pinkish gray (7.5YR 6/2) silt bands; common medium distinct light reddish brown (5YR 6/3) mottles; moderate medium platy structure parting to moderate very fine subangular blocky; firm; few fine roots; common fine and very fine vesicular pores; strong effervescence; moderately alkaline.
TYPE LOCATION: Chippewa County, Michigan; about 3 miles east of the town of Rudyard; 2200 feet west and 1,300 feet south of the northeast corner, sec. 10, T. 44 N., R. 2 W.
RANGE IN CHARACTERISTICS: The thickness of the solum ranges from 20 to 35 inches. The upper sandy layers are 15 to 25 inches thick and are fine sand, sand, or loamy sand. Reaction of the upper sandy layers are very strongly acid to neutral. Gravel content ranges from 0 to 5 percent throughout.
The Oa horizon has hue of 7.5YR or 10YR, or is neutral; value of 2 or 3; and chroma of 0 to 2. Some pedons have an Oe horizon instead of an Oa.
Where present, the Ap or A horizon has hue of 10YR or 7.5YR, value of 2 or 3, and chroma of 1 or 2.
The E horizon has hue of 10YR or 7.5YR, value of 5 to 7, and chroma of 2 or 3.
The Bs horizon has hue of 7.5YR or 10YR, value of 3 or 4, and chroma of 4 to 6. Some pedons have a Bhs horizon with hue of 7.5YR or 10YR and value and chroma of 2 or 3.
The E part of the E/B horizon has hue of 5YR or 7.5YR, value of 5 or 6, and chroma of 2 or 3. It is loamy sand, fine sand, sand, or loamy fine sand. The B part has value of 4 or 5 and is sandy loam, silt loam, or fine sandy loam.
The 2Bt horizon has value of 4 or 5 and is clay, silty clay, or silty clay loam. Reaction is neutral or mildly alkaline.
The 2C horizon has value of 4 or 5 and chroma of 3 or 4. It is clay or silty clay with thin strata of silt or silt loam. The thin strata have hue of 5YR or 7.5YR, value of 5 to 7 and chroma of 2 or 3. Some pedons do not have the thin silty strata. Reaction of the 2C horizon is mildly alkaline or moderately alkaline.
COMPETING SERIES: This is the
Allendale series. Similar soils are the
Kinross,
Munuscong, and
Pinconning series. Allendale soils are better drained. Kinross soils are sandy throughout. Munuscong and Pinconning soils do not have spodic horizons. In addition, Munuscong soils are coarse-loamy in the upper part of the control section.
GEOGRAPHIC SETTING: Fibre soils are on lake plains and outwash plains. Slopes range from 0 to 2 percent. Mean annual precipitation ranges from 25 to 37 inches, and mean annual temperature ranges from 38 to 42 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Allendale,
Manistee, and
Pickford soils. The Allendale soils are on low knolls or slightly higher landscape positions. The Manistee soils are on ridges and side slopes. The Pickford soils do not have sandy material in the upper part and are on similar landscape positions.
DRAINAGE AND PERMEABILITY: Poorly drained. Surface runoff is very slow. Permeability is rapid in the upper sandy layers and very slow in the clayey layers.
USE AND VEGETATION: Dominately forested with black spruce, balsam fir, tamarack, quaking aspen, and paper birch. A few areas are in hayland, pasture, or small grain.
DISTRIBUTION AND EXTENT: Eastern part of the Upper Peninsula of Michigan. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Chippewa County, Michigan, 1989.
REMARKS: Classification was adjusted to agree with ST Issue l#17 on 6 Sept 94 by CLG. Based upon the current problems with the chemical requirements for spodosols, the classification of the series was changed from Sideraquods to Haplaquods. For laboratory data on this pedon, see Michigan Technological University pedon number 85MI-033-3.
Diagnostic horizons and features recognized in this pedon are:
a.bic horizon - the zone from 5 to 13 inches (E horizon); spodic horizon - the zone from 13 to 17 inches (Bs horizon); argillic horizon - the zone from 19 to 27 inches (2Bt horizon); aquic moisture regime.
National Cooperative Soil Survey
U.S.A.