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Silas Series - Contd. <br />. friable, slightly sticky and slightly plastic; mildly <br />alkaline; clear smooth boundary. <br />• <br />A12 7-14"--Very dark grayish brown (lOYR 3/2) sandy loam, very <br />dark brown (lOYR 2/2) moist; moderate medium subangular <br />blocky parting to moderate fine subangular blocky struc- <br />ture; soft, very friable, slightly sticky and slightly <br />plastic; mildly alkaline; clear smooth boundary. <br />AC 14-20"--Dark grayish brown (lOYR 4/2) sandy clay loam, very <br />dark grayish brown (lOYR 3/2) moist; weak medium sub- <br />angular blocky parting to weak fine subangular blocky <br />structure; slightly hard, friable, slightly sticky and <br />slightly plastic; mildly alakaline; clear smooth boundary. <br />C1 20-35"Grayish brawn (lOYR 5/2) sandy clay loam, very dark <br />grayish brown (lOYR 3/2) moist; weak coarse subangular <br />• blocky parting to weak medium subangular blocky structure; <br />• slightly hard, friable, slightly sticky and slightly <br />plastic; mildly alkaline; clear smooth boundary. <br />C2 35-60"Grayish brown (lOYR 5/2) sandy clay loam, dark grayish <br />brawn (lOYR 4/2) moist; massive; slightly hard, friable, <br />slightly sticky and slightly plastic; mildly alkaline. <br />Content of rock fragments ranges from 0 to 15 percent by volume and <br />are mainly less than 3 inches in diameter. <br />The A and AC horizons have hue of lOYR, a value of 3 or 4 dry, 2 or <br />3 moist, and a chrome of 2 or 3. <br />The C horizons have hue of lOYR, a value of 3 through 5 dry, 2 <br />through 4 moist, and a chrome of 2 or 3. <br />• <br />