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<br />-- OG1014 <br /> <br />- <br /> <br />e <br /> <br />. <br /> <br />types in this group are Underwood-Babb and iicCammon-Deschutes. These <br /> <br />soils are complex, as they are developed on rough terrain from a variety <br /> <br />of parent materials. They are mostly shallow, stony, lacking in vel1' <br /> <br />definite profile development, and subject to erosion. The Brown soils <br /> <br />are found in the plains area. These soils are mostly silt loams, though <br /> <br />there are also some sanqy soils. Alluvial soils are found along the <br /> <br />stream valley and cover only a small portion of the area. <br /> <br />20. Vegetal cover. - Vegetative types in general are associated <br /> <br /> <br />geographically with the soils groups. The high mountain peaks on the <br /> <br /> <br />western divide are above timber line and are devoid of cover. In the <br /> <br />timber areas, conifers, aspen, and brush with associated grasses are <br /> <br />found. In the woodland zone west of the front range, pinon, juniperl <br /> <br />scrub oak, and sagebrush, with scattered growths of bunch grass pre- <br /> <br />dominate. In the treeless plains regions, short grasses, gramma, and <br /> <br />buffalo grass are the domihant species. <br /> <br />21. Maps.,~ The upper basin is almost Elhtire:;ly coveted by quad- <br />rangle maps of the United States Geological Survey, Department of the <br /> <br />Interior, which are listed in table 2. <br /> <br />TABL 2 <br /> <br />U1ITTED STATES GEOLOGIC_cT" SURVEY QUADRANGLES <br />COVE:'I~ NJ <br />UPPER PURGATOIRE RIVER BASIN <br />