Wetland Classif/Identif/Delineation-2011

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ANGUS SERIES The Angus series consists of very deep,well drained soils formed in calcareous loamy glacial till on moraines and till plains.Permeability is moderate. Slopes range from 2 to 5 percent.Mean annual precipitation is about 28 inches.Mean annual air temperature is about 46 degrees F. TAXONOMIC CLASS: Fine-loamy, mixed, superactive,mesic Mollic Hapludalfs TYPICAL PEDON: Angus loam with a convex slope of about 5 percent on a ground moraine in a cultivated field. (Colors are for moist soil unless otherwise noted.) Ap--O to 8 inches; black(lOYR 2/1) loam, dark grayish brown(lOYR 4/2)dry; weak fine granular structure; friable; many very fine roots; about 2 percent gravel; neutral; abrupt smooth boundary. (6 to 10 inches thick) Btl--8 to 23 inches; dark yellowish brown(lOYR 4/4) clay loam; moderate medium angular blocky structure; firm; common faint brown(lOYR 4/3)clay films on ped interiors; many very fine roots; about 3 percent gravel; slightly acid; gradual wavy boundary. Bt2--23 to 35 inches; brown(lOYR 4/3)clay loam; moderate medium subangular blocky structure; firm; common faint very dark grayish brown(lOYR 3/2)clay films on faces of peds and root channels; common very fine roots; about 5 percent gravel; slightly acid; clear wavy boundary. (Combined thickness of the Bt horizons is 15 to 40 inches) BC--35 to 40 inches; brown(lOYR 5/3) clay loam; weak medium subangular blocky structure; friable; few faint brown(lOYR 4/3) clay films in root channels; about 4 percent gravel; slightly effervescent; slightly alkaline; gradual wavy boundary. (0 to 12 inches thick) C--40 to 80 inches; brown(lOYR 5/3) loam; massive; friable; common fine distinct grayish brown(2.SY 5/2)Fe depletion and common medium distinct yellowish brown (lOYR 5/6)Fe concentrations; about 7 percent gravel; strongly effervescent; slightly alkaline. TYPE LOCATION: Wright County,Minnesota; about 1 mile south of Montrose, 200 feet north and 80 feet east of the southwest corner of sec. 1, T. 118 N., R. 26 W.; USGS Waverly quadrangle; lat. 45 degrees 03 minutes 20 seconds N.; long. 93 degrees 54 minutes 38 seconds W.,NAD2'7. RANGE IN CHARACTERISTICS: Depth to free calcium carbonates ranges from 24 to 54 inches. Rock fragments of mixed lithology comprise 2 to 8 percent of the volume throughout. Soil saturation occurs in the lower third of the series control section for periods of one month or more. These soils are dry for more than 60 days in the soil moisture control section during the 120 days following the summer solstice. The clay content ranges from 22 to 30 percent and the sand content ranges from 30 to 45 percent throughout.