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<br /> texture of the soils generally varies from rather heavy clay <br /> loams in the lower elevation are as to a stony, sandy loam on the <br />' higher areas. A few areas have large rocks in the soil. Only <br />' about 30 percent of the land yet to be affected has soils of a <br /> clay l oam to gravelly clay loam textu re in the top 12 inches or <br />' more. An area weighted average depth of salvageable soil is <br />about 8 inches. <br />' Gully and rill erosion is not a common occurrence on this <br />land. Sheet erosion may occur to some extent, but even with slight <br />vegetative cover this is controlled. Some gullying has occurred <br />in the past, probably because of an abuse of the land by <br />overgrazing, but where rich soils occur, they encourage heavy <br />' grass cover and this has helped control the soil erosion. The <br />' fact that most of the undisturbed soils are relatively heavy in <br />texture no doubt aids in the prevention of serious erosional <br />' problems. <br />The soils can be divided into four groups. Their <br />' descriptions follow. <br />' geavy Soil. This soil occupies about 30 percent of the <br />land yet to be affected. It is dark gray in color and sometimes <br />' even black. Its texture is a clay loam that exhibits severe <br />shrink/swell characteristics. When dry it exhibits large cracks <br />' that are as much as a half inch wide and up to 12 inches deep. <br />When wet these cracks close. It is hard when dry and slick <br />1 when wet. The structure is distinctly blocky. <br />' The A-horizon is from 8 to 16 inches deep. The B-horizon is <br />in excess of 12 inches thick and is also blocky in structure. Its <br />30 <br />