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ANGUS SERIES <br /> The Angus series consists of very deep,well drained soils formed in calcareous loamy glacial till on <br /> moraines and till plains.Permeability is moderate.Slopes range from 2 to 5 percent.Mean annual <br /> precipitation is about 28 inches.Mean annual air temperature is about 46 degrees F. <br /> TAXONOMIC CLASS: Fine-loamy,mixed,superactive, mesic Mollis Hapludalfs <br /> TYPICAL PEDON: Angus loam with a convex slope of about 5 percent on a ground <br /> moraine in a cultivated field. (Colors are for moist soil unless otherwise noted.) <br /> Ap--0 to 8 inches; black(IOYR 2/1) loam,dark grayish brown(10YR 4/2)dry; weak fine <br /> granular structure; friable;many very fine roots;about 2 percent gravel; neutral; abrupt <br /> smooth boundary.(6 to 10 inches thick) <br /> BtI--8 to 23 inches;dark yellowish brown(10YR 4/4)clay loam;moderate medium <br /> angular blocky structure; firm;common faint brown(10YR 4/3)clay films on ped <br /> interiors; many very fine roots;about 3 percent gravel; slightly acid; gradual wavy <br /> boundary. <br /> Bt2--23 to 35 inches; brown (IOYR 4/3)clay loam;moderate medium subangular blocky <br /> structure; firm; common faint very dark grayish brown(10YR 3/2) clay films on faces of <br /> peds and root channels; common very fine roots;about 5 percent gravel; slightly acid; <br /> clear wavy boundary. (Combined thickness of the Bt horizons is 15 to 40 inches) <br /> BC--35 to 40 inches; brown(10YR 5/3) clay loam; weak medium subangular blocky <br /> structure; friable; few faint brown(10YR 4/3)clay films in root channels;about 4 percent <br /> gravel; slightly effervescent; slightly alkaline; gradual wavy boundary.(0 to 12 inches <br /> thick) <br /> C--40 to 80 inches;brown(10YR 5/3) loam;massive; friable; common fine distinct <br /> grayish brown(2.5Y 5/2)Fe depletion and common medium distinct yellowish brown <br /> (10YR 5/6)Fe concentrations; about 7 percent gravel; strongly effervescent;slightly <br /> alkaline. <br /> TYPE LOCATION: Wright County, Minnesota; about 1 mile south of Montrose,200 <br /> feet north and 80 feet east of the southwest corner of sec. 1,T. 118 N.,R.26 W.; USGS <br /> Waverly quadrangle; lat.45 degrees 03 minutes 20 seconds N.; long. 93 degrees 54 <br /> minutes 38 seconds W.,NAD27. <br /> RANGE IN CHARACTERISTICS: Depth to free calcium carbonates ranges from 24 <br /> to 54 inches. Rock fragments of mixed lithology comprise 2 to 8 percent of the volume <br /> throughout.Soil saturation occurs in the lower third of the series control section for <br /> periods of one month or more.These soils are dry for more than 60 days in the soil <br /> moisture control section during the 120 days following the summer solstice. The clay <br /> content ranges from 22 to 30 percent and the sand content ranges from 30 to 45 percent <br /> throughout. <br />