LOCATION HAUG MNEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, calcareous, frigid Histic Humaquepts
TYPICAL PEDON: Haug muck with a slightly concave slope in a shallow depression on a glacial lake plain at 1,010 feet elevation. (Colors are for moist soil unless otherwise stated.)
Oa--0 to 9 inches; black (10YR 2/1 broken face and rubbed) muck (sapric material); a trace of fiber; weak medium and coarse platy parting to weak fine and medium subangular blocky structure; very friable; many very fine and fine roots; slightly acid; clear smooth boundary. (8 to 15 inches thick)
A--9 to 15 inches; black (N 2/0) mucky sandy loam; weak fine platy parting to moderate fine and medium subangular blocky structure; very friable, slightly sticky and plastic; many very fine roots: few very fine and fine tubular pores; common clean grayish brown (2.5Y 5/2) sand grains; about 2 percent gravel; slightly effervescent but strongly effervescent in lower part; slightly alkaline; clear smooth boundary. (2 to 8 inches thick)
Bkg1--15 to 23 inches; light olive gray (5Y 6/2) loam; weak coarse prismatic structure parting to fine and medium subangular blocky and weak very fine angular blocky; very friable, slightly sticky and plastic; few very fine roots; about 5 percent gravel; common fine and medium prominent yellowish brown (10YR 5/8) Fe concentrations; strongly effervescent; moderately alkaline; clear wavy boundary.
Bkg2--23 to 30 inches; light olive gray (5Y 6/2) loam; weak very coarse prismatic structure parting to weak fine and medium subangular blocky and weak very fine angular blocky; residual plates 1-2 mm thick with grayish brown (2.5Y 5/2) horizontal coatings and light olive gray (5Y 6/2) coatings on vertical faces, interior plate color light olive brown (2.5Y 5/3);friable, slightly sticky and plastic; few very fine roots; about 5 percent gravel and 2 percent rounded cobbles and 1 percent cobble sized disintegrated granite fragments; many fine and medium prominent yellowish brown (10YR 5/8 and 10YR 5/6) Fe concentrations; strongly effervescent; moderately alkaline; gradual wavy boundary. (combined Bkg horizons 6 to 16 inches thick)
BCdg--30 to 45 inches; light olive brown (2.5Y 5/3) loam; moderate extremely coarse to coarse prismatic structure parting to weak thin platy; olive gray (5Y 5/2) coatings on vertical faces and yellowish brown (10YR 5/4) coating on horizontal faces and edges; firm; slightly sticky and plastic; few very fine roots located along vertical plates; about 3 percent gravel and 4 percent rounded cobbles and 1 percent cobble sized disintegrated granite fragments; common medium prominent yellowish brown (10YR 5/6) Fe concentrations; strongly effervescent; moderately alkaline; gradual irregular boundary.
Cdg--45 to 80 inches; light brownish gray (2.5Y 6/2) loam; massive with residual plates 1-2 cm thick; firm and very firm, slightly sticky and plastic; vertical fractures in the upper 30 cm of the horizon with olive gray (5Y 5/2)coatings on faces and yellowish brown (10YR 5/8) coatings on plate edges; about 3 percent gravel and 7 percent rounded cobbles and 1 percent cobble sized disintegrated granite fragments; many fine prominent dark brown (7.5YR 3/2) Mn masses; strongly effervescent; moderately alkaline.
TYPE LOCATION: Kittson County, Minnesota; about 4 miles southwest of Caribou; 150 feet west and 350 feet north of the SE corner of Sec. 12, T. 163 N., R. 46 W. USGS Skull Lake NE quadrangle, Lat. 48 degrees 56 minutes 57.4 seconds N. Long. 96 degrees 32 minutes 12 seconds W., NAD 83.
RANGE IN CHARACTERISTICS: Depth to free carbonates is 0 to 10 inches and occurs in all parts between 10 and 20 inches. The mineral soil contains 0 to 15 percent rock fragments of mixed lithology. The organic soil is herbaceous.
The Oa horizon has hue of 5YR to 5Y or is neutral, value of 2 or 3, chroma of 0 to 2. In some pedons up to 4 inches of mucky peat (hemic material) is included. Reaction is slightly acid to slightly alkaline.
The A horizon has hue of 10YR to 5Y or is neutral, value of 2 or 3, chroma of 0 to 2. Texture is loam, fine sandy loam, sandy loam, or silt loam and the mucky analogues. Reaction is neutral or slightly alkaline.
The Bkg or Bg horizons have hue of 2.5Y or 5Y, value of 4 to 7, and chroma of 1 or 2. Texture is loam, fine sandy loam, sandy loam, or silt loam. Calcium carbonate equivalent ranges from 25 to 40 percent Reaction is slightly alkaline or moderately alkaline.
The BCdg has hue of 2.5Y or 5Y, value of 4 to 6, and chroma of 1 or 2. It has textures of sandy loam, fine sandy loam, loam or silt loam. Texture is slightly alkaline or moderately alkaline. Calcium carbonate equivalent ranges from 25 to 40 percent. Moist bulk density ranges from 1.70 to 1.85 g/cc. Primary structure is dominantly fractures in the till matrix and platy fragments.
The Cdg has hue of 2.5Y or 5Y, value of 4 to 6, and chroma of 1 or 2. Chroma of 3 may be present in the lower, denser portion of the horizon. This color may also occur on ped interiors with lower chroma occurring on exteriors and along fracture faces. It has textures of sandy loam, fine sandy loam, loam or silt loam. It has 12 to 18 percent clay and more than 15 percent fine and coarser sand. Reaction is slightly alkaline or moderately alkaline. Calcium carbonate equivalent ranges from 20 to 40 percent. Moist bulk density ranges from 1.75 to 2.00 g/cc.
Some pedons have a Cd with chroma of 3.
COMPETING SERIES: There are no other series in this family.
GEOGRAPHIC SETTING: The Haug soils have plane or slightly concave slopes with
gradient of 0 to 1 percent on lake plains and ground moraines. These soils formed in a thin layer of organic soil material over calcareous, loamy glacial till or lacustrine deposits. The mean annual air temperature is 36 to 45 degrees F. Mean annual precipitation ranges from 19 to 28 inches. Frost-free days range from 88 to 135. Elevation above sea level ranges from 750 to 1,350 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Boash, Cathro, Chilgren, Kratka, Northwood, Percy and Strandquist series. The Cathro soils have an organic layer thicker than 16 inches. The Northwood soils are in similar landscape positions and have a sandy mantle overlying loamy sediments. The Boash, Chilgren, Kratka, Percy and Stranquist soils do not have histic epipedons.
DRAINAGE AND PERMEABILITY: Very poorly drained. Surface runoff is very low or
ponded. Saturated hydraulic conductivity, measured in inches per hour, is .6 to 2 in the upper profile and .06 to .6 in the lower part (Cdg horizon). Depth to an apparent seasonal high saturation is at the surface during periods of snow melt and/or heavy rainfall periods. Surface ponding occurs typically in spring and fall during normal years.
USE AND VEGETATION: Native vegetation is water tolerant grasses, reeds, cattails, and sedges with scattered willows and alders. Most areas are in native vegetation but some areas are used for growing crops, hay and pasture.
DISTRIBUTION AND EXTENT: MLRAs 56 and 88. Northwestern Minnesota primarily on the Glacial Lake Agassiz lake plain. Moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Kittson County, Minnesota, 1/75.
REMARKS: Diagnostic horizons and features recognized in this pedon are: histic epipedon - from the surface to a depth of 9 inches (Oa horizon); cambic or calcic horizon - from a depth of 14 to 45 inches (Bkg1, Bkg2, BCdg horizons); calcareous family - carbonates in all parts between 10 and 20 inches: densic contact 30 to 80 inches (BCdg and Cdg horizons).
Soils in MLRA-102A previously correlated to the Haug series will be recorrelated to a new series.
Refer to pedon ID S03MN-069 for characterization of the typifying pedon and to M.A.E.S. Central File Code Nos. 2692 and to S78MN-029-005 data on two pedons.