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' <br /> � TAXONOMIC CLASS: Loamy, mixed, euic, mesic Terric Haplosaprists <br /> 1 TYPICAL PEDON: Palms muck, on 1 percent slope under marsh vegetation at an elevation of <br /> 648 feet. (Colors are for moist soil unless otherwise stated.) <br /> � Oal--0 to 14 inches; black (lOYR 2/1) broken face and rubbed muck (sapric material); about 5 <br /> percent fiber, less than 5 percent rubbed; moderate medium granular structure; slightly sticky; <br /> about 20 to 25 percent mineral material; slightly acid (pH 6.5 in water); abrupt smooth boundary. <br /> � Oa2--14 to 28 inches; black (lOYR 2/1) broken face and rubbed muck (sapric material); about 5 <br /> percent fiber, less than 5 percent rubbed; massive parting to weak coarse subangular blocky <br /> structure; slightly sticky; 10 to 20 percent mineral material; strongly acid (pH 5.5 in water); clear <br /> ' smooth boundary. <br /> Oa3--28 to 35 inches; black (N 2.5/0) rubbed muck (sapric material); about 5 percent fiber, less <br /> � than 5 percent rubbed; massive; slightly sticky; 10 to 20 percent mineral material; moderately <br /> acid (pH 6.0 in water); abrupt smooth boundary. (Combined thickness of the Oa horizon is 16 to <br /> 51 inches.) <br /> � Cg--35 to 80 inches; gray (lOYR 5/1) clay loam; massive; friable; common medium distinct dark <br /> yellowish brown (lOYR 4/4) masses of iron oxide accumulation in the matrix; neutral (pH 6.8 in <br /> � water) in upper part; slightly effervescent, moderately alkaline in lower part. <br /> TYPE LOCATION: Gratiot County, Michigan; north of the flood plain of the Maple River and <br /> � about 200 feet south of the upland; 1,420 feet south and 820 feet west of the northeast corner of <br /> sec. 27, T. 9 N., R. 2 W.; U.S.G.S. Pompeli topographic quadrangle; lat. 43 degrees 8 minutes <br /> 31.3 seconds N. and long. 84 degrees 31 minutes 34.7 seconds W., NAD 27; UTM Zone 16, <br /> � 701165 easting and 4779557 northing, NAD 83. <br /> RANGE IN CHARACTERISTICS: The depth to the loamy C horizon ranges from 16 to 51 <br /> � inches. The organic material is derived primarily from herbaceous plants, but some layers <br /> contain as much as 15 percent woody material. Reaction of the organic material ranges from <br /> strongly acid to slightly alkaline. Some organic layers contain carbonates. <br /> , The surface tier has hue of lOYR to SYR, or is neutral; value of 2, 2.5, or 3, and chroma of 0 to <br /> 2. It is dominantly sapric material; however, some pedons have hemic material. The subsurface <br /> � and bottom tiers have hue of lOYR to SYR, or are neutral; value of 2 to 4, and chroma of 0 to 3. <br /> Thin layers, less than 10 inches thick, of hemic material are in some pedons. Thin layers, less <br /> than 5 inches thick, of fibric material are in some pedons. Some pedons have a thin layer of <br /> ' sedimentary peat above the C horizon. Some pedons have a thin A horizon above the C horizon. <br /> The C or Cg horizon has hue of lOYR to SY, SGY, or is neutral; value of 3 to 7, and chroma of 0 <br /> to 4. It is loamy very fine sand, sandy loam, fine sandy loam, loam, silt loam, silty clay loam, <br /> � clay loam, or sandy clay loam, or the gravelly analogues of these textures. The upper 12 inches <br /> of this horizon averages between 10 and 35 percent clay. Some pedons contain Chin strata of fine <br /> � sand, loamy sand, or silt. Reaction ranges from moderately acid to moderately alkaline. Rock <br /> ' <br /> , <br />