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2A1--26 to 36 inches; black (N 2/0) mucky silty clay loam; weak medium subangular blocky <br /> structure; friable; few very fine roots; slightly acid; gradual smooth boundary. <br /> 2A2--36 to 48 inches; black (N 2/0) silty clay loam; massive; friable; few dark reddish brown <br /> (SYR 3/4) iron oxide concentrations in root channels; about 1 percent gravel; neutral; �radual <br /> wavy boundary. (Combined thickness of 2A horizon is 8 to 45 inches thick.) <br /> 2Cg1--48 to 65 inches; olive gray (SY 5/2) clay loam; massive; friable; dark reddish brown <br /> (SYR 3/4) Fe oxide concentrations in root channels; many medium prominent yellowish brown <br /> (lOYR 5/6) Fe concentrations; about 1 percent gravel; slightly effervescent; slightly alkaline; <br /> gradual wavy bounday. <br /> 2Cg2--65 to 80 inches; gray (SY 5/1) loam, massive; friable; many medium prominent light <br /> olive brown (2.SY 5/4) and yellowish brown (lOYR 5/4) Fe concentrations; about 3 percent <br /> gravel; slightly effervescent; slightly alkaline. <br /> TYPE LOCATION: Nicollet County, Minnesota; 2600 feet north and 2300 feet east of the <br /> southwest corner, sec. 12, T. 110 N., R. 28 W.; USGS Nicollet quadrangle; lat. 44 degrees 20 <br /> minutes 53 seconds N. and long. 94 degrees 8 minutes 28 seconds W., NAD27. <br /> RANGE IN CHARACTERISTICS: The thickness of the organic material ranges from 16 to 50 <br /> inches. It is derived primarily from herbaceous plants. The organic matter content ranges from 25 <br /> to 60 percent in the organic surface and 5 to 20 percent in the 2A horizon. The reaction of the <br /> organic material ranges from moderately acid to slightly alkaline. Some organic layers contain <br /> free carbonates. <br /> The O horizon has hue of lOYR, SYR, or is neutral, value of 2 or 3 and chroma of 0 to 2. It is <br /> dominantly muck(sapric material) however, some pedons have thin layers of hemic material, <br /> less than 10 inches thick. <br /> Some pedons have highly organic mineral plow layers. <br /> The 2A horizon has hue of lOYR, 2.SY, SY or is neutral, value of 2 or 3 and chroma of 0 to L It <br /> is loam, silt loam, sandy clay loam, silty clay loam, clay loam or mucky modifiers of these <br /> textures. It is moderately acid to slightly alkaline. Some pedons contain thin layers of <br /> coprogenous earth. <br /> The 2Cg horizon has hue of lOYR, 2.SY, SY, SGY, or is neutral, value of 2 to 7 and chroma of 0 <br /> to 2. It is loam, silt loam, silty clay loam, clay loam, sandy clay loam, sandy loam or fine sandy <br /> loam, or their gravelly or cobbly analogues. It is slightly acid to moderately alkaline. The upper <br /> 12 inches of this horizon averages less than 35 percent clay. Some pedons contain thin strata of <br /> fine sand, loamy sand, or silt. Gravel or cobble sized rock fragments range from 0 to 25 percent <br /> by volume. Some pedons contain free carbonates. Sandy substratum and ponded phases are <br /> recognized. <br /> COMPETING SERIES: These are Linwood, Medo, Palms, Philbon and Shalcar series. <br /> Linwood soils have well expressed granular structure to depths of more than 12 inches and <br />