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