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eh <br />ESPEY, HUSTON & ASSOCIATES, INC. <br />• <br />contact at depths of 20 to 40 inches. Buckskin and Sessions soils have <br />sola more than 50 inches thick. Florissant, Mayoworth, Owen Creek, and <br />Trout Creek have a pazalithic contact at depths of less than 40 inches. <br />Gurney soils have rock fragments that are mainly larger than 10 inches <br />in diameter and have dominant hue of 5YR in B2 horizon. Heath soils <br />have calcic horizons. Segal soils have an abrupt texture boundary <br />between the A and B horizons, have skeletal C horizons and occur in <br />areas of dominant winter precipitation. <br />Geographic Setting: The Jerry soils aze on moderately to steeply sloping <br />upland hills, ridges, and mesa tops. Slope gradients range from approxi- <br />mately 2 to 30 or more percent. The soils formed in locally transported <br />alluvial fan sediments derived principally from sandstone and shale but <br />having a mixture of other crystalline rocks in places. At the type <br />location the average annual precipitation is 20 inches with peak periods <br />• of precipitation occurring during the spring and summer. The mean <br />annual temperature is 37°F, and the mean summer temperature is 59oF. <br />Associated Soils: These aze the Cochetopa soils which have a mollic <br />epipedon more than 16 inches thick and the competing Heath and <br />Youman soils. <br />Drainage and Permeability: These soils aze well drained with rapid <br />runoff and slow permeability. <br />Use and Vegetation: These soils aze used principally as native pasture- <br />land and for recreation. Native vegetation is mainly mountain big sage, <br />snowberry, Thurbers fescue, nodding brome, native bluegrass and western <br />wheatgrass. <br />r 1 <br />LJ <br />I-18 <br />