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GLENCOE SERIES <br /> T'he Glencoe series consists of very deep,very poor(y drained soils that formed in loamy sediments from <br /> ;lacial till on glacial moraines. These soils have moderate or moderately s(ow permeability. S(opes are 0 to <br /> l percent. N[ean annual precipitation is about 28 inches. N[ean annual temperature is about�48 degrees F. <br /> TAXONOMIC CLASS: Fine-loamy, mixed, superactive, mesic Cumulic Endoaquo(Is <br /> TYPICAL PEDON: Glencoe efay 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 /> otherwise noted.) <br /> Ap--O to 10 inches; black (N 2/0) c(ay loam; massive; friable; about 2 percent gravel; <br /> c(oddy; 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; c(ear wavy boundary. (Combined thickness of A <br /> horizon is 16 to 32 inches.) <br /> ABg--24 to 3� inches; very dark gray (�Y 3/I) c(ay loam; weak fine subangular blocky <br /> structure; friable; few tongues of dark olive gray (�Y 3/2) and olive gray (SY 4/2); about <br /> 2 percent gravel; neutral; gradual irregular boundary. (0 to 26 inches thick) <br /> Bg--35 to 48 inches; olive gray(�Y�/2) loam; moderate coarse subangu(ar blocky <br /> structure; friable: few tongues of very dark gray (�Y 3/1); about 5 percent gravel; <br /> common fine prominent light o(ive brown (2.SY 5/4) and common medium prominent <br /> strong brown (7.SYR 5/6) Fe concentrations; neutra(; gradual wavy boundary. (0 to 30 <br /> inches thick) <br /> Cg--48 to 60 inches; grayish brown (2.SY 5/2) loam; massive; friable; about 5 percent <br /> gravel; many medium distinct light olive brown (2.SY 5/4) Fe concentrations; strongly <br /> effervescent; slightly alkaline. <br /> 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. 2l W.; <br /> USGS Medford West quadrangle; (at. 44 degrees 8 minutes �6 seconds N. and long. 93 <br /> degrees 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. T'he thickness <br /> of the mol(ic 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 miYed lithology comprise 0 to 5 percent of the volume of the A and B horizons and 2 <br /> 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 te�ctures below 40inches. <br /> The Ap or A horizon has hue of lOYR to SY or neutral, va(ue of 2 or 3, and chroma of 0 <br /> or l. It is clay (oam, silty clay loam, or loam with 25 to 35 percent clay. Ponded phases <br />