LOCATION CARP LAKE MIEstablished Series
TAXONOMIC CLASS: Fine, mixed, active, nonacid, frigid Aeric Epiaquepts
TYPICAL PEDON: Carp Lake silty clay loam - on a 1 percent slope in forested area. (Colors are for moist soil unless otherwise stated.)
Oi--0 to 2 centimeters; loose leaf litter and twigs; very strongly acid (pH 5.0); abrupt smooth boundary. (0 to 10 centimeters thick)
A--2 to 13 centimeters; dark reddish brown (5YR 3/3) silt loam, reddish gray (5YR 5/2) dry; moderate medium granular structure; friable; many very fine to coarse roots; about 1 percent gravel; very strongly acid (pH 5.0); abrupt smooth boundary. (5 to 15 centimeters thick)
Eg--13 to 25 centimeters; dark gray (7.5YR 4/1) clay, brown (7.5YR 5/2) dry; moderate coarse prismatic structure; firm; common very fine to coarse roots; common medium faint yellowish red (5YR 4/6) masses of oxidized iron; about 1 percent gravel; moderately acid (pH 5.6); abrupt wavy boundary. (0 to 15 centimeters thick)
Bw1--25 to 36 centimeters; reddish brown (5YR 4/4) clay; weak coarse prismatic structure; firm; common very fine to coarse roots; very few patchy distinct reddish brown (5YR 5/3) silt coats on surfaces along root channels and few patchy faint reddish brown (5YR 4/4), silt coats on bottom faces of peds; few coarse prominent gray (5YR 5/1), masses of reduced iron on faces of peds and many very coarse prominent yellowish red (5YR 5/8) masses of oxidized iron; about 1 percent gravel; moderately acid (pH 5.7); clear wavy boundary.
Bw2--36 to 74 centimeters; reddish brown (2.5YR 4/4) clay; weak very coarse prismatic structure; firm; few very fine to medium roots; very few patchy distinct reddish brown (5YR 5/3) silt coats on surfaces along root channels and few patchy faint reddish brown (2.5YR 4/4) silt coats on bottom faces of peds; about 1 percent gravel; slightly acid (pH 6.4); gradual smooth boundary. (combined thickness of the Bw horizons is 10 to 76 centimeters)
BC--74 to 91 centimeters; reddish brown (2.5YR 4/4) silty clay loam; weak coarse angular blocky structure; firm; very few patchy prominent gray (7.5YR 6/1) carbonate coats on bottom faces of peds and few patchy faint reddish brown (2.5YR 4/4) silt coats on bottom faces of peds; few medium prominent pinkish gray (5YR 7/2) carbonate masses; about 2 percent gravel; slight effervescence; neutral (pH 7.3); gradual smooth boundary. (0 to 38 centimeters thick)
C--91 to 203 centimeters; reddish brown (2.5YR 4/4) silty clay loam; massive; very firm; few medium prominent pinkish gray (5YR 7/2) carbonate masses; about 3 percent gravel; strong effervescence; strongly alkaline (pH 8.6). (38 to 127 centimeters thick)
TYPE LOCATION: Major Land Resource Area (MLRA 92) Superior Lake Plain, Ontonagon County Michigan Subset; approximately 7.5 miles SW of White Pine, about 1000 feet east and 500 feet south of the NW corner of sec. 4, T. 49 N., R. 43 W, USGS Aldridge Creek, MI, topographic quadrangle; UTM NAD 1983, zone 16, 293880 Easting, 5172865 Northing.
RANGE IN CHARACTERISTICS:
Depth to carbonates - 51 to 102 centimeters
Clay content, weighted average, particle size control section - 35 to 60 percent
Gravel content - 1 to 15 percent throughout
A horizon:
Hue - 10YR to 5YR, or is neutral
Value - 2 or 3
Chroma - 0 to 3
Texture - clay, silty clay, silty clay loam, silt loam, or the mucky analogs
Reaction - very strongly acid to neutral (pH 4.5 to 7.3)
Eg horizon:
Hue - 10YR to 2.5Y
Value - 4 to 6
Chroma - 1 or 2
Texture - silty clay loam, clay, or silty clay
Reaction - strongly acid to slightly alkaline (pH 5.1 to 7.8)
Bw or Bg horizon:
Hue - 2.5YR or 5YR
Value - 4 or 5
Chroma - 2 to 4
Texture - clay, silty clay, or silty clay loam
Reaction - strongly acid to slightly alkaline (pH 5.1 to 7.8)
BC or BCg horizon:
Hue - 2.5YR or 5YR
Chroma - 2 to 4
Texture - silty clay loam, clay or silty clay
Reaction - strongly acid to slightly alkaline (pH 5.1 to 7.8)
C horizon:
Hue or 2.5YR or 5YR
Value of 4 to 6
Chroma of 2 to 4
Texture - silty clay loam, clay or silty clay
Reaction - slightly alkaline to strongly alkaline (pH 7.4 to 9.0)
COMPETING SERIES: This is the Pickford series. Pickford soils have varves in the lower horizons and contain less than 1 percent rock fragments in the particle size control section.
GEOGRAPHIC SETTING:
Parent material: clayey till
Landform: depressions on till plains and moraines
Slope - 0 to 2 percent
Mean annual precipitation - 790 to 860 millimeters
Mean annual air temperature - 4 to 7 degrees C.
GEOGRAPHICALLY ASSOCIATED SOILS:
Odanah,
Sanborg,
Badriver, and Carp Lake form a drainage sequence (catena).
Odanah are on knolls and side slopes and in the Haplic Glossudalfs Subgroup
Sanborg are on knolls and flats and in the Oxyaquic Glossudalfs Subgroup
Badriver are on flats, depressions, and drainageways and are in the Aeric Glossaqualfs Subgroup
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage - a perched seasonal zone of water saturation from 30 centimeters above the surface to 30 centimeters below the surface is present at some time from November to June (poorly drained).
Surface runoff - very low
Saturated hydraulic conductivity - very slow
Flooded frequency - occasional
Flooding duration - brief
USE AND VEGETATION: Most areas are forested. The major species are red maple, sugar maple, American basswood, black ash, white spruce, northern white cedar, speckled alder and balsam fir.
DISTRIBUTION AND EXTENT:
Physiographic Division
--Laurentian Upland
Physiographic Province
--Superior Upland
Land Resource Region
--Northern Lake States Forest and Forage region (LRR K)
Major Land Resource Area
--Superior Lake Plain (MLRA 92)
The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Major Land Resource Area 92 Superior Lake Plain; Ontonagon County Michigan Subset, January 2007. Proposed in Ontonagon County, Michigan, 2005.
REMARKS: Diagnostic horizons and features recognized in the typical pedon are:
Ochric epipedon - 0 to 25 centimeters (Oi, A, and Eg horizons)
Cambic horizon - 25 to 74 centimeters (Bw1 and Bw2 horizons)
Aquic conditions - 20 to 36 centimeters (Eg and Bw1 horizons)