LOCATION PETTICOAT MIEstablished Series
TAXONOMIC CLASS: Coarse-loamy over sandy or sandy-skeletal, mixed, active, frigid Alfic Haplorthods
TYPICAL PEDON: Petticoat cobbly silt loam-forested. (Colors are for moist soil unless otherwise stated.)
Oe--1 to 0 inches; very dark brown (10YR 2/2) partially decomposed leaf litter; weak fine granular structure; very friable; many roots; very strongly acid; clear wavy boundary. (0 to 2 inches thick)
E--0 to 2 inches; brown (7.5YR 4/2) cobbly silt loam; moderate medium platy structure; friable; common roots; about 5 percent gravel and 25 percent cobbles; extremely acid; clear wavy boundary. (2 to 4 inches thick)
Bhs--2 to 4 inches; dark reddish brown (5YR 3/2) cobbly silt loam; moderate medium subangular blocky structure; friable; common roots; about 2 percent gravel and 25 percent cobbles; very strongly acid; clear broken boundary. (0 to 4 inches thick)
Bs1--4 to 10 inches; dark brown (7.5YR 3/4) cobbly silt loam; moderate medium subangular blocky structure; friable; many roots; about 5 percent gravel and 25 percent cobbles; very strongly acid; gradual wavy boundary.
Bs2--10 to 18 inches; brown (7.5YR 4/4) silt loam; moderate medium subangular blocky; friable; common roots; about 3 percent gravel and 10 percent cobbles; strongly acid; gradual wavy boundary. (Combined thickness of the Bs horizon is 11 to 21 inches.)
E'--18 to 26 inches; yellowish brown (10YR 5/4) silt loam; moderate medium subangular blocky structure; friable; few roots; about 5 percent gravel and 8 percent cobbles; strongly acid; clear irregular boundary. (6 to 10 inches thick)
Bt--26 to 38 inches; strong brown (7.5YR 4/6) loam; moderate medium subangular blocky; firm; few roots; few pores; common distinct clay films in pores and on faces of peds; about 3 percent gravel and 8 percent cobbles; strongly acid; abrupt wavy boundary. (8 to 12 inches thick)
2C1--38 to 46 inches; yellowish brown (10YR 5/4) very gravelly loamy sand; massive; loose; about 30 percent gravel and 25 percent cobbles; moderately acid; gradual wavy boundary.
2C2--46 to 60 inches; dark yellowish brown (10YR 4/4) very gravelly loamy sand; massive; loose; about 30 percent gravel and 25 percent cobbles; moderately acid.
TYPE LOCATION: Baraga County Michigan; about 8.5 miles south of Three Lakes; 1,100 feet north and 750 feet west of the southeast corner of sec. 31, T. 47 N., R. 31 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 25 to 40 inches. Reaction is very strongly acid to slightly acid in the solum and strongly acid to slightly acid in the substratum. Volume of gravel ranges from 1 to 10 percent in the solum and from 15 to 40 percent in the substratum. Cobble content ranges from 10 to 30 percent in the surface horizons and from 5 to 25 percent in the subsoil and substratum. Stones on the surface can cover from less than 0.01 to 3.0 percent of the surface.
The O horizon has hue of 5YR, 7.5YR, or 10YR. Some pedons have an A horizon 1 to 4 inches thick, with hue of 5YR or 7.5YR, value of 2 or 3, and chroma of 1 to 3. The E horizon has hue of 5YR or 7.5YR, and value of 4 or 5. The A and E horizons are silt loam, loam, very fine sandy loam, or the cobbly analogues of these textures.
The Bhs horizon has hue of 5YR or 7.5YR, and value and chroma of 2 or 3. The Bs horizon has hue of 5YR or 7.5YR, value and chroma of 3 to 6. Value and chroma of 3 do not occur together in this horizon. The B horizons are silt loam, silt loam, or the cobbly analogues of these textures.
The E' horizon has hue of 7.5YR or 10YR and value of 5 or 6, and chroma of 2 or 3.
The Bt horizon has value of 4 or 5 and chroma of 4 or 6. The E' and Bt horizons occur separately or in combination. They are fine sandy loam, loam, silt loam, or cobbly analogs of these textures.
The 2C horizons have value of 4 to 5 and chroma of 2 to 4. These are loamy sand, loamy fine sand, or the cobbly , gravelly or very gravelly analogs of these textures. Some pedons have bright colored mottles in the lower subsoil and substratum.
COMPETING SERIES: There are no other series in the same family. Similar soils are the Amasa, Champion, Fence, Goodman, and Stambaugh series. The Amasa soil does not have an argillic horizon. The Champion soil has a fragipan. The Fence soils are underlain by layered silt and silt loams. The Goodman series is in the coarse-silty family. The Stambaugh soil is coarse-silty over sandy or sandy skeletal.
GEOGRAPHIC SETTING: Petticoat soils formed in modified silty eolian material and in the underlying sandy glacial till. They are on nearly level to gently rolling ground moraines. Slope gradients are dominantly 1 to 18 percent. Mean annual precipitation ranges from 30 to 33 inches, and mean annual temperature ranges from 41 to 43 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Champion, Amasa, Carbondale, and Tacoosh soils. The Champion and Amasa soils are on similar landscape positions. The Carbondale and Tacoosh mucks are in depressions and drainageways.
DRAINAGE AND PERMEABILITY: Well drained and moderately well drained. The moderately well drained phase has a seasonal high water table that ranges from 2 to 4 feet below the surface from November to May. Surface runoff is slow to moderate. Permeability is moderate in the upper part of the pedon and moderately rapid in the lower part.
USE AND VEGETATION: Nearly all of this soil is in forests of sugar maple, yellow birch, quaking aspen, black cherry, and basswood.
DISTRIBUTION AND EXTENT: Western 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: Baraga County, Michigan, 1984.
REMARKS: Diagnostic horizons and features recognized in this pedon are: albic horizon - the zone from the surface to 2 inches and from 18 to 26 inches (E and E' horizons); spodic horizon - the zone from 2 to 18 inches (Bhs, Bs1, and Bs2 horizons); argillic horizon - the zone from 26 to 38 inches (Bt horizon). The silty eolian surface material has been modified by windthrow activity and post glacial erosion.
For laboratory data see Michigan Technological University Pedon No. S80MI-013-04.