LOCATION CLEARRIVER MN
Established Series
Rev. TAG-AGG
02/2011
CLEARRIVER SERIES
The Clearriver series consists of very deep, moderately well drained soils that formed in sandy lacustrine sediments on glacial lake plains. These soils have rapid permeability. Slopes range from 0 to 3 percent. Mean annual temperature is about 40 degrees F. Mean annual precipitation is about 22 inches.
TAXONOMIC CLASS: Mixed, frigid Aquic Udipsamments
TYPICAL PEDON: Clearriver loamy fine sand, on a 2 percent slope, under red pine. (Colors are for moist soil unless otherwise noted.)
A--0 to 3 inches; very dark grayish brown (10YR 3/2) loamy fine sand, dark gray (10YR 4/1) dry; weak fine granular structure; very friable; moderately acid; clear smooth boundary. (0 to 6 inches thick)
E--3 to 13 inches; brown (10YR 4/3) loamy sand, pale brown (10YR 6/3) dry; single grain; loose; about 10 percent gravel; neutral; abrupt irregular boundary. (9 to 29 inches thick)
B/E--13 to 15 inches; 85 percent brown (7.5YR 4/4) coarse sandy loam (Bt); weak fine subangular structure; very friable; many distinct, dark brown (7.5YR 3/2) clay films on ped faces; penetrated by 15 percent tongues of brown (10YR 4/3) loamy sand, pale brown (10YR 6/3) dry; single grain; loose; about 10 percent gravel; neutral; abrupt smooth boundary. (1 to 3 inches thick)
BC--15 to 29 inches; light yellowish brown (2.5Y 6/4) fine sand; single grain; loose; common medium distinct light gray (2.5Y 7/2) Fe depletions and common fine prominent dark yellowish brown (10YR 4/6) Fe concentrations; about 2 percent gravel; neutral; gradual smooth boundary. (0 to 20 inches thick)
Cg1--29 to 39 inches; grayish brown (2.5Y 5/2) gravelly coarse sand; single grain; loose; few fine faint light gray (2.5Y 7/2) Fe depletions; about 15 percent gravel; slightly effervescent; slightly alkaline; gradual smooth boundary.
Cg2--39 to 46 inches; light brownish gray (2.5Y 6/2) gravelly coarse sand; single grain; loose; about 25 percent gravel; slightly effervescent; slightly alkaline; gradual smooth boundary.
Cg3--46 to 60 inches; light brownish gray (2.5Y 6/2) fine sand; single grain; loose; about 5 percent gravel; slightly effervescent; slightly alkaline.
TYPE LOCATION: Lake of the Woods County, Minnesota; about 13 miles south of Williams; 1350 feet south and 700 feet west of the northeast corner of section 19, T. 159 N., R. 33W.; USGS Graceton SW quadrangle; lat. 48 degrees 34 minutes 46 seconds N. and long. 94 degrees 56 minutes 03 seconds W., NAD83.
RANGE IN CHARACTERISTICS: Depth to carbonates ranges from 13 to 60 inches. They are mixed in lithology and are mostly less than 3 inches in diameter. Redoximorphic features occur at depths between 20 and 40 inches.
The A horizon has value of 2 to 4 and chroma of 1 or 2.
The E horizon has hue of 10YR or 7.5YR, value of 3 to 6, and chroma of 2 to 6.
The A and E horizons are loamy fine sand, loamy sand, fine sand, loamy coarse sand or sand. The gravel content ranges from 0 to 10 percent. They are strongly acid to slightly acid. Some pedons have a thin O horizon.
The Bt part of the B/E horizon has hue of 10YR or 7.5YR, value of 3 to 5, and chroma of 4 to 6. It is sandy loam, loamy sand, coarse sandy loam, loamy coarse sand, sandy clay loam or their gravelly analogues. Rock fragment content ranges from 5 to 35 percent by volume. It is neutral or slightly acid. There is 2 to 4 times as much clay in the Bt part as in the adjacent E material.
The E part of the B/E horizon has hue of 10YR or 7.5YR, value of 3 to 6, and chroma of 2 to 4. It is loamy fine sand, loamy sand, fine sand, sand, coarse sand or their gravelly analogues. Rock fragment content ranges from 5 to 35 percent by volume. It is strongly acid to slightly acid.
Some pedons have E and Bt horizons with 1/8 to 2 1/2 inch thick lamellae.
The BC horizon has hue 2.5Y or 10YR, value of 4 to 6, and chroma of 3 or 4. It is sand, coarse sand, fine sand or their gravelly analogues. Rock fragment content ranges from 5 to 35 percent by volume. It is slightly acid or neutral.
The Cg horizon has hue of 10YR to 2.5Y, value of 4 through 7 and chroma of 1 or 2. It is sand, coarse sand, fine sand, or their gravelly analogues. Rock fragment content ranges from 5 to 35 percent by volume. They are typically slightly alkaline or moderately alkaline.
COMPETING SERIES: These are the
Aylmer,
Hiwood,
Lino,
Meehan,
Poppleton,
Redby,
Rushlake, and
Winterfield series. Aylmer, Hiwood, Lino, Meehan, Poppelton, Redby, Rushlake, and Winterfield soils do not have a thin zone of clay accumulation (Bt) in the series control section. In addition, Aylmer, Hiwood and Lino soils do not have free carbonates above 40 inches. Winterfield soils have an irregular decrease in organic carbon with increasing depth.
GEOGRAPHIC SETTING: Clearriver soils have plane to convex slopes of 0 to 3 percent on glacial lake plains. They formed in stratified sand and gravelly sediments of late Wisconsinan glaciation. Mean annual temperature ranges from 37 to 42 degrees F. Mean annual precipitation ranges from 20 to 24 inches. Frost-free period ranges from 100 to 125 days. Elevation ranges from 1050 to 1300 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Faunce,
Hiwood,
Redby and
Cormant soils. Well drained Faunce soils occupy slightly higher positions. Hiwood soils do not have rock fragments and the thin zone of clay accumulation. Somewhat poorly drained Redby soils and poorly drained Cormant soils occupy lower positions and do not have rock fragments.
DRAINAGE AND PERMEABILITY: Moderately well drained. Runoff is slow. Permeability is rapid. Depth to an apparent seasonal water table is as high as of 2 to 3.5 feet at some time from April to June in most years.
USE AND VEGETATION: This soil is mostly forested. Main tree species are red pine and jack pine.
DISTRIBUTION AND EXTENT: Northern Minnesota, primarily the glacial lake Agassiz plain. Moderately extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota.
SERIES ESTABLISHED: Marshall County, Minnesota, 1994.
REMARKS: This soil was formerly called Faunce Variant.
Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from the surface to a depth of 13 inches (A and E horizons); aquic subgroup based upon low chroma Fe depletions within 40 inches. 2/11/2011-TYPE LOCATION error corrected.
National Cooperative Soil Survey
U.S.A.