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• C1 (2-6") - Yellowish brown (lOYR 5/6) fine sandy loam, dark <br />yellowish brown (lOYR 4/6) moist; massive; sift, friable <br />nonsticky and nonplastic; few fine and very fine roots; <br />strongly effervescent; neutral (pH 7.5); clear smooth <br />boundary <br />C2ca (6-15") - Brownish yellow (lOYR 6/6) fine sandy loam, <br />same color moist; massive; soft, friable, nonsticky and <br />nonplastic; calcareous; violently effervescent; common <br />fine irregular threads and seams of lime; few mildly <br />alkaline (pH 7.4). <br />Range in characteristics: Depth to visible lime accumulation <br />is 5 to 15 inches. The texture of the A horizon is loamy sand to <br />fine sandy loam. The control section has less than 18 percent <br />clay. Depth to bedrock is 10 to 20 inches. <br />Setting: The Blackhall series are shallow soils which have <br />developed on ridgetops and steep sideslopes from fine to coarse- <br />grained calcareous sandstone. Slopes are 6 to 15 percent. <br />• Type Location: 325 feet west, 675 feet south of the northeast <br />corner Section 10, T8N, R76W. <br />Blackhall-Rock Outcrop Complex, 6 to 15 percent slopes (6) <br />The complex is along sloping to rolling ridgetops throughout <br />the study area. This unit is comprised of about 65 percent Black- <br />hall loamy fine sand and 35 percent rock outcrop. Topsoil material <br />is found intermixed among rock outcrops in shallow pockets. <br />This mapping unit has the same profile description represented <br />by the Blackhall series. <br />Spicerton sandy loam, 2 to 5 percent slopes (7) <br />The Spicerton series are deep, nearly level to moderately <br />sloping soils found on low terraces and upland drainageways. <br /> <br />-10- <br />