LOCATION NONESUCH MIEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, isotic, frigid Alfic Oxyaquic Fragiorthods
TYPICAL PEDON: Nonesuch loam, on a 2 percent south facing slope in a forested area at an elevation of 224 meters. (Colors are for moist soil unless otherwise stated.)
Oi--0 to 2 centimeters; black (5YR 2.5/1); slightly decomposed leaf litter; weak fine granular structure; very friable; many very fine to very coarse roots; extremely acid (pH 4.3); abrupt smooth boundary. (0 to 8 centimeters thick)
A--2 to 10 centimeters; dark reddish brown (5YR 3/3) loam, dark reddish gray (5YR 4/2) dry; weak medium granular structure; friable; many very fine to very coarse roots; about 6 percent channers 1 percent gravel and 1 percent cobbles; extremely acid (pH 4.3); clear smooth boundary. (5 to 13 centimeters thick)
Bs--10 to 28 centimeters; reddish brown (5YR 4/3) channery loam; weak fine subangular blocky structure; friable; many fine to very coarse roots; about 20 percent channers, 1 percent gravel and 1 percent cobbles; very strongly acid (pH 4.7); abrupt wavy boundary. (15 to 36 centimeters think)
Bt1--28 to 41 centimeters; reddish brown (5YR 4/3) very gravelly fine sandy loam; weak fine and very fine subangular blocky structure; friable; many fine and medium roots; few faint reddish brown (2.5YR 4/3) clay films on ped faces; about 30 percent gravel, 20 percent channers, and 2 percent cobbles; very strongly acid (pH 4.7); clear wavy boundary.
Bt2--41 to 58 centimeters; reddish brown (5YR 4/4) gravelly sandy loam; weak very fine subangular blocky structure; very friable; many very fine and fine roots; few faint reddish brown (2.5YR 4/4) clay films on ped faces; about 20 percent gravel and 10 percent channers; very strongly acid (pH 5.0); clear wavy boundary. (Combined thickness of the Bt horizons is 25 to 51 centimeters)
B/Ex--58 to 86 centimeters; 60 percent reddish brown (2.5YR 4/4) and 40 percent reddish brown (5YR 4/4) silt loam; moderate very fine and fine subangular blocky structure; firm; common fine roots; many faint reddish brown (2.5YR 4/4) clay films and few faint reddish brown (5YR 5/4) sand coats on faces of peds; few medium yellowish red (5YR 5/8) iron accumulations on rock fragments; about 10 percent gravel; very strongly acid (pH 4.9); abrupt wavy boundary. (0 to 38 centimeters thick)
Crt--86 to 127 centimeters; 95 percent dark reddish brown (2.5YR 3/3) and 5 percent light reddish brown (5YR 6/3) weathered siltstone and lenses of silt loam; massive; friable to very firm; few very fine roots; many faint dark reddish brown (2.5YR 3/3) clay films on rock fragments; about 75 percent channers, very strongly acid (pH 4.9); diffuse irregular boundary. (0 to 51 centimeters thick)
R--127 centimeters; dark reddish brown (2.5YR 3/3) siltstone bedrock.
TYPE LOCATION: Major Land Resource Area (MLRA 92) Superior Lake Plain, Ontonagon County Michigan Subset; about 10 miles west of the city of Ontonagon, 2075 feet north and 2000 feet east of the southwest corner of Section 16, T51N, R41W; USGS White Pine, MI topographic quadrangle; lat. 46 degrees 48 minutes 48 seconds N and long. 89 degrees 31 minutes 1 second W. NAD 1927.
RANGE IN CHARACTERISTICS:
Depth to paralithic material (Crt horizon) - 51 to 102 centimeters
Depth to bedrock (R horizon) - 51 to 152 centimeters
Gravel, channer, and paragravel content (excluding Crt horizon) - 0 to 50 percent
Cobble content (excluding Crt horizon) - 0 to 5 percent
Oi, Oe horizons
Hue: 2.5YR to 7.5YR or Neutral
Chroma: 0, 1, or 2
Reaction: extremely to strongly acid (3.5 to 5.5)
A horizon
Hue: 5YR or 7.5YR
Value: 2.5 or 3
Chroma: 1, 2, or 3
Texture: fine sandy loam, silt loam, loam or the gravelly, very gravelly, channery, and very channery analogs
Reaction: extremely acid to neutral (pH 3.5 to 7.3)
E horizon (when present)
Chroma: 3 or 4
Texture: fine sandy loam, silt loam, loam or the gravelly, very gravelly, channery, and very channery analogs
Reaction: extremely acid to neutral (pH 3.5 to 7.3)
Bs horizon
Value: 3 or 4
Chroma: 3 or 4
Texture: fine sandy loam, silt loam, loam or the gravelly, very gravelly, channery, and very channery analogs
Reaction: extremely acid to neutral (pH 3.5 to 7.3)
Bt horizons
Hue: 2.5YR or 5YR
Value: 3 or 4
Chroma: 3 to 6
Texture: silt loam, loam, fine sandy loam, sandy loam or the gravelly, very gravelly, channery, and very channery analogs
Reaction: very strongly acid to neutral (pH 4.5 to 7.3)
B part of the B/Ex horizons
Hue: 2.5YR or 5YR
Value: 3 or 4
Texture: silt loam, loam, sandy loam, fine sandy loam or the gravelly, very gravelly, channery, and very channery analogs
Reaction: extremely acid to neutral (pH 3.5 to 7.3)
Ex part of the B/Ex horizons
Chroma: 4 to 6
Texture: silt loam, loam, fine sandy loam or the gravelly, very gravelly, channery, and very channery analogs
Reaction: very strongly acid to neutral (pH 4.5 to 7.3)
Crt and Cr horizons
Hue: 2.5YR or 5YR
Value: 3 to 6
Chroma: 3 or 4
Texture: highly weathered siltstone or sandstone bedrock with lenses of silt loam
COMPETING SERIES: There are no other series in the same taxonomic family.
GEOGRAPHIC SETTING:
Parent Material loamy till
Landform ground moraine on structural bench consisting of siltstone and sandstone bedrock
Microfeature - post glacial lake shoreline
Slope - 1 to 18 percent
Elevations - 183 to 305 meters
Mean annual precipitation - 760 to 860 millimeters
Mean annual air temperature - 4 to 7 degrees C.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Big Iron,
Croswell,
Flintsteel,
Greenstone, and
Loggerhead soils.
Big Iron - are on adjacent rises, greater than 203 centimeters deep to bedrock, and in the Aquic Glossudalfs Subgroup
Croswell are on adjacent beach ridges, greater than 152 centimeters deep to bedrock, and in the Oxyaquic Haplorthods Subgroup
Flintsteel are on adjacent interfluves and side slopes, greater than 203 centimeters deep to bedrock, and in the Oxyaquic Glossudalfs Subgroup.
Greenstone are lower on the landscape, 25 to 50 centimeters deep to paralithic material, 50 to 152 centimeters deep to bedrock, and in the Fragiaquic Hapludalfs Subgroup.
Loggerhead are on adjacent knolls, rises, and side slopes, greater than 203 centimeters deep to bedrock, and in the Oxyaquic Haplorthods Subgroup.
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage - Internal drainage is impeded by the bedrock. A seasonal zone of water saturation ranges from a depth of 46 to 91 centimeters and is perched on the siltstone bedrock. It is highest in spring after snow melt and also occurs for short periods from October to May (moderately well drained).
Saturated hydraulic conductivity (Crt horizon) - moderately slow
Saturated hydraulic conductivity (B/Ex horizon) - very slow
Saturated hydraulic conductivity (all other horizons) - moderate
USE AND VEGETATION: Most areas are forested. The major species are sugar maple, red maple, quaking aspen, and green ash. A few areas are used for pasture and hay production or are idle.
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 small extent; 3282 hectares are correlated.
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, 2001. The name is derived from an old copper mine in Ontonagon County.
REMARKS: Diagnostic horizons and features in this pedon include:
Ochric epipedon - 0 to 10 centimeters (Oi and A horizons)
Spodic horizon - 10 to 28 centimeters (Bs horizon)
Argillic horizon - 28 to 86 centimeters (Bt1, Bt2, and B part of the B/Ex horizons)
Fragipan - 58 to 86 centimeters (B/Ex horizon)
Paralithic materials - 86 to 127 centimeters (Crt horizon)
Lithic contact - 127 centimeters (R horizon)
Redoximorphic feature - iron accumulations at 58 centimeters
ADDITIONAL DATA: Refer to User Pedon ID 99MI131007 for Primary Characterization Data from National Soil Survey Laboratory (http://ssldata.nrcs.usda.gov/querypage.asp).