LOCATION ROSY MNEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, frigid Aquic Glossudalfs
TYPICAL PEDON: Rosy very fine sandy loam on a convex slope of 2 percent on a lacustrine plain under American elm, ash, aspen, basswood, and paper birch. (Colors are for moist soil unless otherwise stated.)
Oi--2 to 0 inches; organic litter of fresh and well decomposed leaves, twigs and fine roots.
E1--0 to 2 inches; dark gray (10YR 4/1) and dark grayish brown (10YR 4/2) very fine sandy loam, grayish brown (10YR 5/2) dry; weak thin platy structure; very friable; many roots, strongly acid; clear wavy boundary.
E2--2 to 9 inches; grayish brown (10YR 5/2) and light brownish gray (10YR 6/2) very fine sandy loam, light gray (10YR 7/2) dry; weak and moderate thin and medium platy structure; very friable; many roots; strongly acid; clear wavy boundary. (Combined thickness of E horizons ranges from 5 to 18 inches.)
B/E--9 to 12 inches; about 80 percent yellowish brown (10YR 5/4) and brown (10YR 5/3) loam (Bt); moderate fine and medium angular blocky structure; firm; about 20 percent albic materials of grayish brown (10YR 5/2) and light brownish gray (10YR 6/2) very fine sandy loam (E); weak thin platy structure; friable; many roots; few thin clay films on faces of peds (Bt); strongly acid; clear wavy boundary. (2 to 8 inches thick)
Bt--12 to 20 inches; yellowish brown (10YR 5/4) loam; moderate and strong fine and medium angular blocky structure; firm; many roots; many thin and moderately thick brown (10YR 5/3) and few faint grayish brown (10YR 5/2) mottles and clay films on faces of peds; few grayish brown (10YR 5/2) very fine sand coatings on tops and sides of peds in the upper part of the horizon; moderately acid; abrupt wavy boundary. (0 to 17 inches thick)
2E and Bt--20 to 50 inches; stratified yellowish brown (10YR 5/4) and brown (10YR 5/3) sandy loam, fine sandy loam, loam, silt loam, and loam: fine sand in lower part; weak fine and medium angular blocky structure; friable; interlayered with grayish brown (10YR 5/2), light brownish gray (10YR 6/2), and pale brown (10YR 6/3) loamy sand that is massive and very friable; common roots; common to continuous thin clay films on faces of peds; few medium faint grayish brown (10YR 5/2) Fe depletions; moderately acid; abrupt wavy boundary. (6 to 40 inches thick)
2BC--50 to 56 inches; light olive brown (2.5Y 5/4) and grayish brown (2.5Y 5/2) stratified loamy fine sand, sandy loam and silt loam; massive; friable; few roots; some clay bridging of sand grains and many with thin colloidal coatings; neutral; abrupt wavy boundary. (0 to 10 inches thick)
2C--56 to 64 inches; light brownish gray (2.5Y 6/2) and grayish brown (2.5Y 5/2) stratified loamy fine sand, loamy very fine sand and silt loam; massive; friable; few fine distinct light olive brown (2.5Y 5/4) Fe concentrations; strongly effervescent; moderately alkaline.
TYPE LOCATION: Itasca County, Minnesota; about 2 miles north and 3.5 miles west of the community of Squaw Lake; about 1,570 feet east and 940 feet north of the southwest corner of sec. 3, T. 148 N., R. 28 W.; USGS Quadrangle Squaw Lake, Minn.; Latitude 47 degrees 39 minutes 39 seconds N.; Longitude 94 degrees 13 minutes 5 seconds W.
RANGE IN CHARACTERISTICS: Free carbonates begin at depths greater than 28 inches, commonly in the lower part of the solum or just below it. Some pedons have as much as 3 percent of fine pebbles by volume, mainly as one or more very thin lag lines. Reaction is strongly acid to neutral in the upper part of the solum and strongly acid to moderately alkaline in the lower part. The C horizon is neutral to moderately alkaline.
Some pedons have a discontinuous A horizon as much as 2 inches thick. It has hue of 10YR, value of 2 or 3, and chroma of 1 or 2. Where present, and Ap horizon has hue of 10YR, value of 3 to 5 (6 or 7 dry) and chroma of 1 or 2. The E horizon has hue of 10YR, value of 4 to 6, and chroma of 1 or 2. The E horizons are very fine sandy loam, fine sandy loam, loam, sandy loam, or silt loam. Some pedons have E/B horizons.
The Bt horizon has hue of 10YR or 7.5YR, value of 4 or 5, and dominant chroma of 3 or 4 with some chroma of 2 at depths less than 10 inches below the upper boundary. It is loam, fine sandy loam, very fine sandy loam, silt loam, or sandy loam. Some pedons have thin subhorizons of silty clay loam, clay loam, or sandy clay loam. It has thin or moderately thick clay films on faces of peds.
The 2E and Bt horizons typically have hue of 10YR or 7.5YR, value of 4 or 5, and chroma of 3 or 4. Individual coarser textured strata include 2.5Y hue, value of 7, and chroma of 2. Strata commonly are discontinuous over short horizontal distances. Thickness of individual strata range from about 1/4 inch to 12 inches, and commonly is 2 to 5 inches. Textures are typically loam, fine sandy loam, very fine sandy loam, silt loam, or sandy loam with thin coarser textured strata including loamy fine sand, loamy very fine sand, loamy sand, fine sand, and sand.
Some pedons have 2Bk horizons which have white or light gray segregated lime as masses that are rounded or thread-like.
The 2BC and 2C horizons have hue of 2.5Y or 10YR, value of 4 to 7, and chroma of 2 to 4. They are stratified consisting of sandy loam, loamy sand, loamy fine sand, fine sandy loam, very fine sandy loam, loam, or silt loam.
COMPETING SERIES: These are in the Blowers, Brennyville, Killmaster, and Mikado series. The Blowers, Brennyville, Killmaster, and Mikado soils are not stratified in the lower part of the series control section.
GEOGRAPHIC SETTING: Rosy soils are on convex and plane surfaces on lacustrine and outwash plains. Slopes range from 0 to 6 percent. They formed in stratified loamy and sandy glaciofluvial or lacustrine sediments. Mean annual air temperature is 37 to 41 degrees F. Mean annual precipitation is 23 to 28 inches. Frost-free days range from 88 to 135. Elevation above sea level ranges from 1000 to 1600 feet.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Baudette, Morph, Sago, and Zimmerman series. The moderately well drained Baudette and the excessively drained Zimmerman series are on similar landscape positions. Baudette soils are fine silty and Zimmerman soils are sandy. The poorly drained Morph and the very poorly drained Sago series are part of the same hydrosequence. They are on lower landscape positions.
DRAINAGE AND PERMEABILITY: Moderately well drained. Runoff is low or moderately low. Permeability is moderate. The apparent seasonal high water table is at 3 to 5 feet at some time from March through June in most years.
USE AND VEGETATION: Most acreage is forested. Common trees are basswood, paper birch, quaking aspen, and sugar maple. Some acreage is cleared for production of hay, pasture and small grain.
DISTRIBUTION AND EXTENT: North central Minnesota. Inextensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Itasca County, Minnesota, 1982.
REMARKS: Diagnostic horizons and features for this soil are: Ochric epipedon - from the surface to 9 inches (E1 and E2 horizons); albic horizon - from the surface to 9 inches (E1 and E2 horizons); glossic horizon - 9 to 12 inches (B/E horizon); argillic horizon - 9 to 20 inches (B/E and Bt horizons); aquic subgroup - 2 chroma mottles in the lower part of the argillic horizon; .
ADDITIONAL DATA: Refer to MAES CFC No. 2461 for data of the typifying pedon. Soil Interpretation Record number is MN0344.