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Map Unit Description--Phillips County,Colorado <br /> Soils that have profiles that are almost alike make up a soil series. All the soils of <br /> a series have major horizons that are similar in composition, thickness, and <br /> arrangement. Soils of a given series can differ in texture of the surface layer, <br /> slope, stoniness, salinity, degree of erosion, and other characteristics that affect <br /> their use. On the basis of such differences, a soil series is divided into soil <br /> phases. Most of the areas shown on the detailed soil maps are phases of soil <br /> series. The name of a soil phase commonly indicates a feature that affects use or <br /> management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of <br /> the Alpha series. <br /> Some map units are made up of two or more major soils or miscellaneous areas. <br /> These map units are complexes, associations, or undifferentiated groups. <br /> A complex consists of two or more soils or miscellaneous areas in such an <br /> intricate pattern or in such small areas that they cannot be shown separately on <br /> the maps. The pattern and proportion of the soils or miscellaneous areas are <br /> somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an <br /> example. <br /> An association is made up of two or more geographically associated soils or <br /> miscellaneous areas that are shown as one unit on the maps. Because of <br /> present or anticipated uses of the map units in the survey area, it was not <br /> considered practical or necessary to map the soils or miscellaneous areas <br /> separately. The pattern and relative proportion of the soils or miscellaneous <br /> areas are somewhat similar. Alpha-Beta association, 0 to 2 percent slopes, is an <br /> example. <br /> An undifferentiated group is made up of two or more soils or miscellaneous areas <br /> that could be mapped individually but are mapped as one unit because similar <br /> interpretations can be made for use and management. The pattern and <br /> proportion of the soils or miscellaneous areas in a mapped area are not uniform. <br /> An area can be made up of only one of the major soils or miscellaneous areas, or <br /> it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is <br /> an example. <br /> Some surveys include miscellaneous areas. Such areas have little or no soil <br /> material and support little or no vegetation. Rock outcrop is an example. <br /> Additional information about the map units described in this report is available in <br /> other soil reports, which give properties of the soils and the limitations, <br /> capabilities, and potentials for many uses.Also, the narratives that accompany <br /> the soil reports define some of the properties included in the map unit <br /> descriptions. <br /> Report—Map Unit Description <br /> Phillips County, Colorado <br /> PaB—Platner loam, 0 to 3 percent slopes <br /> Map Unit Setting <br /> National map unit symbol. 2tln0 <br /> Elevation: 4,000 to 4,930 feet <br /> usim Natural Resources Web Soil Survey 10/23/2019 <br /> Conservation Service National Cooperative Soil Survey Page 2 of 8 <br />