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<br />2 <br />Yamac Series <br />C1--15 tc 22 inches; pale brown (lOYR 6/3) loam, light olive <br />brown (2.5Y 5/!}) moist; weak coarse subangular blocky structure; <br />hard, friable, sticky and plastic; calcareous; moderately alkaline <br />(pH 8.2); clear smooth boundary. (5 to 12 inches thick) <br />C2--22 to 38 inches; very pale brown (lOYR ~/3) loam, light <br />olive brown (2.5Y 5/4) moist; weak coarse subangular blocky structure; <br />slightly hard, friable, sticky and plastic; calcareous; moderately <br />alkaline (pH 8.2); clear smooth boundary. (15 to 25 inches thick) <br />e3--38 to 60 inches; very pale brown (lOYR ~/3) loam; massive <br />• structure; hard, friable, sticky and plastic; calcareous; moderately <br />alkaline (pH 8.4). <br />The A horizon ranges in hue from '~.SYR through 2.5Y, in value <br />from 3 or !1 moist, 5 or 6 dry, and in chroma from 2 through ~ <br />moist and dry. The texture is commonly loam in silt loam. The B <br />horizon has the same hue, value and chroma ranges as the A horizon, <br />and ranges in texture £rom loam to light clay loam. <br /> <br />