Wetlland classification, identification, delineation-2005

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HAMEL SERIES The Hamel series consists of very deep,poorly drained and somewhat poorly drained soils that formed in slope colluvium and glacial till on moraines.These soils have moderately slow permeability. Their slopes range from 1 to 4 percent. Mean annual precipitation is about 28 inches. Mean annual air temperature is about 47 degrees F. TAXONOMIC CLASS:Fine-loamy,mixed,superactive,mesic Typic Argiaquolls TYPICAL PEDON:Hamel loam with a 2 percent concave slope on a glacial moraine in a cultivated field.(Colors are for moist soil unless otherwise noted.) Ap--O to 10 inches;black(10YR 2/1)loam,very dark brown(10YR 2/2)dry;weak very fine subangular blocky structure;friable;common very fine roots;about 1 percent gravel;neutral;abrupt smooth boundary. A-10 to 16 inches;black(10YR 2/1)loam,very dark gray(10YR 3/1)dry;weak very fine subangular blocky structure;friable;common very fine roots;about 4 percent gravel;neutral;gradual smooth boundary.(Combined thickness of A horizon is 14 to 30 inches.) AB--16 to 24 inches;very dark gray(10YR 3/1)clay loam,dark grayish brown(10YR 4/2)dry;many fine prominent brown(7.5YR 4/4)Fe concentrations;moderate fine angular blocky structure;friable;common very fine roots;about 4 percent gravel;neutral;gradual wavy boundary.(0 to 10 inches thick. Btgl--24 to 40 inches;very dark grayish brown(2.5Y 3/2)clay loam,grayish brown(1 OYR 5/2)dry;many fine prominent brown(7.5YR 4/4)Fe concentrations;moderate medium prismatic structure;friable;few black(1 OYR 2/1)clay films on faces of peds;about 5 percent gravel;neutral;gradual wavy boundary. Btg2--40 to 46 inches;dark grayish brown(2.5Y 4/2)clay loam;many coarse prominent brown(7.5YR 4/4)Fe concentrations;moderate medium subangular blocky structure;friable;few black(1 OYR 2/1)clay films on faces of peds;about 4 percent gravel;neutral;clear wavy boundary.(Combined thickness of Btg horizons is 12 to 30 inches.) Cgl--46 to 55 inches;olive gray(5Y 5/2)loam;many medium prominent yellowish brown(1 OYR 5/6)Fe concentrations;massive;friable;about 3 percent gravel;slightly effervescent;slightly alkaline;gradual wavy boundary. Cg2-55 to 80 inches;olive gray(5Y 5/2)loam;many medium prominent yellowish brown(I OYR 5/6)Fe concentrations;massive;friable;about 4 percent gravel;slightly effervescent;slightly alkaline. TYPE LOCATION:Wright County,Minnesota;about 1.5 miles southwest of Silver Creek, 1200 feet south and 2300 feet west of the northeast comer of Sec. 18,T.121 N.,R.26 W.,USGS Annandale quadrangle;lat.45 degrees 17 minutes 34 seconds N.;long.94 degrees 00 minutes 13 seconds W.,NAD27 RANGE IN CHARACTERISTICS:Depth to free carbonates range from 30 to 65 inches.The mollic epipedon thickness ranges from 24 to 60 inches.Typically the upper colluvim contains less than 2 percent gravel by volume and the lower part contains 2 to 6 percent gravel by volume of mixed lithology. The A horizons have hue of IOYR or is neutral,value of 2 or 3,and chroma of 0 to 2.Typically it is loam or clay loam,but silt loam or silty clay loam are within the range.It has coatings of clean sand and silt particles in the lower part of the A horizon in some pedons.It is moderately acid to neutral. The Btg horizon has hue of l OYR,2.5Y,or 5Y,value of 2 to 4,and chroma of 1 or 2.It is clay loam,silty clay loam high in sand,or loam.It has between 25 and 35 percent clay and 15 to 35 percent fine sand and coarser.It has B/A clay ratios of 1.2 to 1.4.It has few to many,faint to prominent clay films.It is moderately acid to neutral. The C horizon has hue of a 2.5Y or 5Y,value of 4 to 6,chrome of 1 or 2.It is loam or clay loam.It is slightly alkaline or moderately alkaline.The clay content ranges from 18 to 32 percent and the total sand content ranges from 25 to 45 percent.