LOCATION BRIMLEY MI+WIEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Argic Endoaquods
TYPICAL PEDON: Brimley fine sandy loam - on a 3 percent slope in a cultivated field. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 6 inches; very dark grayish brown (10YR 3/2) fine sandy loam, light brownish gray (10YR 6/2) dry; moderate fine granular structure; friable; common roots; medium acid; abrupt smooth boundary. (6 to 9 inches thick)
E--6 to 8 inches; redish gray (5YR 5/2) silt loam; moderate fine granular structure; friable; common roots; medium acid; abrupt wavy boundary. (2 to 6 inches thick)
Bs--8 to 15 inches; dark brown (7/5YR 4/4) very fine sandy loam; many fine distinct yellowish red (5YR 5/6) mottles; moderate fine subangular blocky structure; friable; common roots; medium acid; abrupt wavy boundary. (6 to 12 inches thick)
E'--15 to 17 inches; reddish gray (5YR 5/2) silt loam; common fine faint reddish brown (5YR 4/4) mottles; weak medium platy structure; friable; common roots; medium acid; abrupt wavy boundary.
Bt--17 to 22 inches; reddish brown (5YR 4/3) silt loam; moderate fine angular blocky strucutre; friable; few roots; common thin clay films on faces of peds; slightly acid; abrupt wavy boundary. (5 to 12 inches thick)
C--22 to 60 inches; reddish brown (5YR 4/4 and 2.5YR 4/4) stratified and varved silt, silt loam and very fine sand; massive; friable; slightly effervescent; mildly alkaline.
TYPE LOCATION: Delta County, Michigan; about 6 1/2 miles east of Ensign, 400 feet south and 400 feet east of the center, sec. 31, T. 41 N., R. 18 W.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 19 to 36 inches. Reaction of the solum ranges from medium acid to neutral. The C horizons are mildly alkaline or moderately alkaline and contain free carbonates.
Undisturbed pedons have A horizons with hue of 10YR, value of 2 or 3, chroma of 1 and range from 1 to 3 inches thick. The Ap horizon has value of 2 or 3 and chroma of 1 or 2. The E horizon has hue of 5YR, 7.5YR or 10YR, value of 5 or 6 and chroma of 1 or 2. Some E horizons contain mottles. The A and E horizons are loam, silt loam, very fine sandy loam or fine sandy loam.
The Bs horizon has hue of 5YR, 7.5YR or 10YR, value of 3 to 5 and chroma of 3 to 6. It contains faint to distinct mottles and is loam, silt loam, very fine sandy loam or fine sandy loam. The 10 to 40 inch control section averages between 18 and 27 percent clay.
The E' horizon has hue of 5YR, 7.5YR or 10YR, value of 5 or 6 and chroma of 2 or 3. It is dominantly silt loam or fine sandy loam.
The Bt horizon has hue of 5YR, 7.5YR or 10YR, value of 4 or 5 and chroma of 2 to 4. It is silty clay loam, silt loam, loam or fine sandy loam.
The C horizon has hue of 2.5YR to 10YR, value of 5 or 6 and chroma of 2 to 4. It is mainly stratified very fine sandy loam, silt, silt loam and thin strata ranging from very fine sand to silty clay.
COMPETING SERIES: This is the Mackinac series. Similar soils are the Belding, Bowers, Charlevoix, Coral, Gaastra, Richter, and Wainola series. Mackinac soils are not stratified in the sola and formed in loam glacial till. Belding, Charlevoix, Coral, Gaastra and Richter soils are coarse-loamy. Bowers soils do not have spodic horizons and have control sections averaging more than 35 percent clay. In addition, Belding, Charlevoix, Coral, and Gaastra soils are less stratified in the lower part of the B horizon and the C horizon; Gaastra soils are leached more deeply and contain more silt and less sand in the lower part of the B horizon and the C horizon. Wainola soils are sandy.
GEOGRAPHIC SETTING: These soils are on lake plains, outwash plains, and deltas. Slope gradients typically are 0 to 3 percent but range from 0 to 6 percent. These soils formed in loamy and sandy glaciofluvial deposits of Wisconsinan Age. Mean annual precipitation ranges from 25 to 30 inches, and mean annual temperature is estimated to range from 41 to 45 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: The well drained Bohemian and the poorly and very poorly drained Bruce soils are members of the same drainage sequence. Onaway, Emmet, Kalkaska, Blue Lake, and Rubicon are well drained to excessively drained soils on nearby till and adjacent outwash areas. The Onaway and Emmet soils are loam or sandy loam with a calcareous substrata. The Kalkaska, Blue Lake, and Rubicon soils are sandy. The somewhat poorly drained, loamy Bowers soils and sandy Wainola soils are common associates on lake plains and deltas.
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Surface runoff is slow. Permeability is moderate in the upper part of the solum and moderately slow in the lower part of the solum and underlying material.
USE AND VEGETATION: Most of these soils are forested. The forests are of sugar and red maple, white and yellow birch, red oak, black ash, eastern white pine, balsam fir, American elm, eastern hemlock, and northern white cedar. Some areas are in pasture, hay, or cultivated for small grains.
DISTRIBUTION AND EXTENT: Northern part of lower Michigan, the Upper Peninsula of Michigan and northern Wisconsin. The series is a moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: St. Paul, Minnesota
SERIES ESTABLISHED: Chippewa County, Michigan; 1927.
REMARKS: Classification was adjusted to agree with ST Issue #17 on 6 Sept 94 by CLG. Diagnostic horizons and features recognized in this pedon are: ochric epipedon - the zone from the surface to 6 inches (Ap horizon); albic horizon - the zones from 6 to 8 inches and from 15 to 17 inches (E and E' horizons); spodic horizon - the zone from 8 to 15 inches (Bs horizon); and argillic horizon - the zone from 17 to 22 inches (Bt horizon).