Wetlland classification, identification, delineation-2005

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GLENCOE SERIES The Glencoe series consists of very deep,very poorly drained soils that formed in loamy sediments from glacial till on glacial moraines.These soils have moderate or moderately slow permeability.Slopes are 0 to 1 percent.Mean annual precipitation is about 28 inches.Mean annual temperature is about 48 degrees F. TAXONOMIC CLASS:Fine-loamy,mixed,superactive,mesic Cumulic Endoaquolls TYPICAL PEDON:Glencoe clay loam with a concave slope of less than 1 percent in a depression on a ground moraine in cultivated field.(Colors are for moist soil unless otherwise noted.) Ap-0 to 10 inches;black(N 2/0)clay loam;massive;friable;about 2 percent gravel;cloddy;neutral;abrupt smooth boundary. A--10 to 24 inches;black(N 2/0)clay loam;weak fine subangular blocky structure;friable;about 2 percent gravel; neutral;clear wavy boundary.(Combined thickness of A horizon is 16 to 32 inches.) ABg--24 to 35 inches;very dark gray(5Y 3/1)clay loam;weak fine subangular blocky structure;friable;few tongues of dark olive gray(5Y 3/2)and olive gray(5Y 4/2);about 2 percent gravel;neutral;gradual irregular boundary.(0 to 26 inches thick) Bg-35 to 48 inches;olive gray(5Y 4/2)loam;moderate coarse subangular blocky structure;friable:few tongues of very dark gray(5Y 3/1);about 5 percent gravel;common fine prominent light olive brown(2.5Y 5/4)and common medium prominent strong brown(7.5YR 5/6)Fe concentrations;neutral;gradual wavy boundary.(0 to 30 inches thick) Cg--48 to 60 inches;grayish brown(2.5Y 5/2)loam;massive;friable;about 5 percent gravel;many medium distinct light olive brown(2.5Y 5/4)Fe concentrations;strongly effervescent;slightly alkaline. TYPE LOCATION: Steele County,Minnesota;about 5 miles northwest of Owatonna;2,640 feet south,2,660 feet west of the northeast corner of sec.24,T. 108 N.,R.21 W.;USGS Medford West quadrangle;lat.44 degrees 8 minutes 46 seconds N.and long.93 degrees 17 minutes 45 seconds W.,NAD27. RANGE IN CHARACTERISTICS:Depth to free carbonates is 30 to 60 inches or more.The Ap in a few pedons will have small amounts of free carbonates.The thickness of the mollic epipedon ranges from 24 to 80 inches.The control section averages between 22 and 35 percent clay and from 15 to 30 percent fine sand and coarser.Rock fragments of mixed lithology comprise 0 to 5 percent of the volume of the A and B horizons and 2 to 8 percent of the C horizon.Some pedons have an 0 horizon up to 6 inches in thickness.A stratified substratum phase is recognized with silt loam,sand,sandy loam,and loamy sand textures below 40inches. The Ap or A horizon has hue of l OYR to 5Y or neutral,value of 2 or 3,and chroma of 0 or 1.It is clay loam,silty clay loam,or loam with 25 to 35 percent clay.Ponded phases may have mucky modifiers.It is commonly neutral but ranges from slightly alkaline to slightly acid. AB horizon has colors and textures similar to the A and Bg horizons. The Bg horizon has hue of 5Y or 2.5Y,value of 2 to 5,and chroma of 1 or 2.Dark colored tongues from the A horizon range from few to common.It is loam,clay loam or silty clay loam.Near the center of some depressions, some pedons have B horizons that have a slight clay increase relative to the A horizons.It is neutral to slightly alkaline,but in some pedons the lower part of the B horizon is slightly alkaline with slight effervescence.The Bg horizon is absent in some pedons. The Cg horizon has hue of 5Y or 2.5Y,value of 4 to 6,and chroma of 1 to 4.It is loam,clay loam or silty clay loam. It is slightly alkaline,with weak or strong effervescence.Calcium carbonate segregations are present in some pedons.