LOCATION CEDAR VALLEY MNEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Oxyaquic Eutrudepts
TYPICAL PEDON: Cedar Valley very fine sandy loam, on a convex slope of 3 percent, on a dune, on a glacial lake plain, in a cultivated field, at an elevation of about 400 meters. (Colors are for moist soil unless otherwise stated).
Ap--0 to 18 centimeters; light olive brown (2.5Y 5/3) very fine sandy loam, light yellowish brown (2.5Y 6/3) dry; moderate fine and medium granular structure; friable; many very fine and fine roots; moderately acid; abrupt smooth boundary. (10 to 23 centimeters thick)
Bw1--18 to 74 centimeters; olive yellow (2.5Y 6/6) very fine sand; weak medium subangular blocky structure parting to single grain; very friable; common very fine and fine roots; moderately acid; gradual wavy boundary.
Bw2--74 to 124 centimeters; light yellowish brown (2.5Y 6/4) very fine sand; weak medium subangular blocky structure parting to single grain; very friable; few fine faint pale yellow (5Y 7/3) redoximorphic depletions and few fine distinct dark yellowish brown (10YR 4/6) redoximorphic concentrations; neutral; clear wavy boundary. (Combined thickness of the Bw horizon is 51 to 152 centimeters)
Cg--124 to 203 centimeters; light gray (2.5Y 7/2) very fine sand; single grain; friable; few fine faint light gray (10YR 7/1) nodules of calcium carbonate; common fine distinct pale olive (5Y 6/4), many medium prominent strong brown (7.5YR 5/8) and common fine and medium prominent yellow (10YR 7/8) redoximorphic concentrations; violently effervescent; moderately alkaline.
TYPE LOCATION: Major Land Resource Area (MLRA) 88-Northern Minnesota Glacial Lake Basins; St. Louis County, Minnesota; about 11 miles northwest of Floodwood; located about 1800 feet south and 1700 feet west of the northeast corner of section 15, T. 53 N., R. 21 W.; USGS Toivola SW topographic quadrangle; latitude 47 degrees 4 minutes 46 seconds N., and longitude 92 degrees 58 minutes 49 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
These soils do not have rock fragments
Depth to carbonates--61 to 175 centimeters
Ap or A horizon:
Hue--10YR or 2.5Y
Value--3 to 5, 6 dry
Chroma--2 or 3
Texturevery fine sandy loam, or loamy fine sand,
Reaction--moderately acid to neutral
E horizon where present:
Hue--10YR or 2.5Y
Value--5 to 7
Chroma--2 or 3
Texture--very fine sand or loamy very fine sand
Reaction--moderately acid to neutral
Bw horizon:
Hue--10YR or 2.5Y
Value--4 to 6
Chroma--4 to 6
Texture--very fine sand, loamy very fine sand or very fine sandy loam
Reaction--moderately acid to neutral
Cg or C horizon:
Hue--2.5Y or 5Y
Value--5 to 7
Chroma--2 to 6
Texture-- very fine sand, loamy very fine sand or very fine sandy loam
Reaction--slightly alkaline to moderately alkaline
COMPETING SERIES: There are no competing series.
GEOGRAPHIC SETTING:
Parent material--sandy eolian deposits
Landform--dunes on glacial lake plains
Slope--1 to 5 percent
Elevation--350 to 490 meters above sea level
Mean annual air temperature--3 to 5 degrees C
Mean annual precipitation--635 to 711 millimeters
Frost-free period--95 to 125 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Wawina,
Cowhorn,
Onega and
Kapla soils. These soils formed in the same parent material as Cedar Valley soils and form a hydrosequence with the Cedar Valley soils.
Wawina--are on more convex positions
Cowhorn--are on less sloping positions and are lower in the landscape
Onega--are on flats
Kapla--are in depressions
DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY:
Drainage class--moderately well drained--these soils have a frequently saturated zone within a depth of 1 meter below the surface during the wettest periods of years when precipitation is within one standard deviation of the 30 year mean of annual precipitation
Saturated hydraulic conductivity--4.23 to 141.14 micrometers per second
USE AND VEGETATION: Most areas are cropped for hay.
DISTRIBUTION AND EXTENT:
Physiographic Division--Interior Plains or Laurentian Upland
Physiographic Province--Central Lowland Province or Superior Upland
MLRA--Northern Minnesota Glacial Lake Basins (88)
LRR--K; northern Minnesota
Extent--small
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota; MLRA SSO 10-4 (Duluth, Minnesota).
SERIES ESTABLISHED: St. Louis County, Minnesota, 2009. The source of the name is a township in St. Louis County.
REMARKS:
Particle size control section--the zone from a depth of 25 to 100 centimeters
Series control section--the zone from the surface of the soil to a depth of 150 centimeters
Diagnostic horizons and features recognized in the pedon include:
Ochric epipedon--the zone from the surface to a depth of 18 centimeters;
Cambic horizon--the zone from 18 to 124 centimeters;
Taxonomy version--Keys to Soil Taxonomy, tenth edition, 2006