LOCATION EVART MI+MN WIEstablished Series
TAXONOMIC CLASS: Sandy, mixed, frigid Fluvaquentic Endoaquolls
TYPICAL PEDON: Evart sand, on a 1 percent concave east-facing slope in an area of lowland hardwoods on a flood plain. (Colors are for moist soil unless otherwise stated.)
A1--0 to 10 inches; black (10YR 2/1) sand, dark gray (10YR 4/1) dry; weak fine granular structure; very friable; many fine roots; slightly acid; clear smooth boundary.
A2--10 to 22 inches; very dark grayish brown (10YR 3/2) sand, dark gray (10YR 4/1) dry; weak coarse granular structure; very friable; many fine roots; few fine distinct brown (10YR 5/3) masses of iron oxide in the matrix; slightly alkaline; clear smooth boundary. (Combined thickness of the A horizons is 11 to 24 inches.)
Cg1--22 to 36 inches; dark grayish brown (10YR 4/2) sand; single grain; loose; common fine roots; few fine faint gray (10YR 5/1) iron depletions in the matrix; slightly alkaline; gradual smooth boundary.
Cg2--36 to 60 inches; dark grayish brown (10YR 4/2) sand; single grain; loose; few fine roots; strongly effervescent; moderately alkaline.
TYPE LOCATION: Osceola County, Michigan; on the south edge of the city of Evart; 175 feet east and 125 feet south of the northwest corner, sec. 3, T. 17 N., R. 8 W.
RANGE IN CHARACTERISTICS: There is an irregular decrease in organic carbon with depth. Mean annual soil temperature is 43 to 47 degrees F.
The particle-size control section has variable textures within short horizontal distances. The content of fine and coarser sand averages 80 to 100 percent.
Some pedons have up to 8 inches organic material on the surface.
The A horizon has hue of 7.5YR or 10YR, value of 2 or 3 moist, 3 to 5 dry, and chroma of 1 or 2, moist or dry. Texture is sand, loamy sand, loamy fine sand, sandy loam, loam, silt loam, or clay loam. The clay loam is a thin deposit over sand or loamy sand. Cobble content is 0 to 3 percent. Gravel content is 0 to 5 percent. Reaction is slightly acid to slightly alkaline.
The C horizons have hue of 7.5YR to 5Y, value of 4 to 6, and chroma of 2 to 4. Chroma of 4 is considered to be due to oxygenated water. Texture is sand, fine sand, loamy sand, gravelly sand, coarse sand, or gravelly coarse sand with thin finer textured strata in some pedons. Cobble content is 0 to 3 percent. Gravel content is 0 to 25 percent. Reaction is slightly acid to moderately alkaline.
COMPETING SERIES: There are no other series currently recognized in this family.
GEOGRAPHIC SETTING: Evart soils are on flood plains. Slope range from 0 to 2 percent. The soils formed in sandy alluvium. The mean annual temperature ranges from 40 to 45 degrees F, and the mean annual precipitation ranges from 29 to 35 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Grayling, Rubicon and Kalkaska soils. These soils are on adjoining uplands. Grayling soils are excessively drained and have an ochric epipedon. Rubicon soils are excessively drained and have a spodic horizon. Kalkaska soils are somewhat excessively drained and have a spodic horizon.
DRAINAGE AND PERMEABILITY: Poorly drained and very poorly drained. Runoff is very slow or ponded. Permeability is rapid. An apparent high water table is 1 foot above the surface to a depth of 2 feet below the surface at any time of the year. These soils are subject to occasional, brief to long periods of flooding.
USE AND VEGETATION: Practically all is in forest or permanent pasture. Red maple, swamp white oak, northern white cedar, and quaking aspen are the principal trees.
DISTRIBUTION AND EXTENT: Northern Michigan and Minnesota. The series is of moderate extent ( MLRA's 91, 94A and 94B).
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota.
SERIES ESTABLISHED: Osceola County, Michigan, 1966.
REMARKS: This revision changes the classification from sandy, mixed, frigid Fluvaquentic Haplaquolls to sandy, mixed, frigid Fluvaquentic Endoaquolls.
Diagnostic horizons and features recognized in this pedon are: Mollic epipedon - from the surface to 22 inches (A1 and A2 horizons). Irregular decrease in organic carbon content. Aquic conditions (endosaturation) - in the zone from 10 to 60 inches (A2, C1, and C2 horizons).
ADDITIONAL DATA: Soil Interpretations Record: MI0226.