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L� <br />' <br />Coni Series <br />The Coni series consists of shallow, well- drained <br />soils that formed in arkosic sedimentary rock over- <br />lying unweathered conglomerate. These gently slop- <br />ing to sloping soils are at or near the edge of <br />tablelands in the southern part of the Area. Slopes <br />' <br />are 3 to 15 percent. The vegetation is dominantly <br />short and mid grasses, but in places there are pine <br />trees and brush. Elevations are 6,600 to 7,800 <br />feet. Annual precipitation is 17 to 21 inches. <br />' <br />Mean annual soil temperature is 43 to 47 F., and <br />the frost -free season is 115 to 125 days. <br />In a representative profile the surface layer, <br />about 7 inches thick, is dark grayish -brown loam. <br />' <br />The subsoil, about 10 inches thick, is a brown to <br />pale -brown clay loam to sandy clay loam that rests <br />on hard conglomerate at a depth of 17 inches or <br />less. <br />' <br />Coni soils have moderate permeability. Available <br />water capacity is low. Plants can penetrate to a <br />depth of 20 inches or less. <br />Most areas of Coni soils are in native grasses <br />and are used for grazing livestock and for wildlife <br />habitat. <br />1 <br />Coni rocky loam, 3 12 12 2 percent slopes (Co G). -- <br />This complex is about 70 percent Coni loam and about <br />15 percent Rock outcrop. This complex is on or near <br />tableland edges in the southern part of the Area, <br />It is made up of long, narrow bands about 1,000 feet <br />or less in width and extending for several miles in <br />length. In most places these areas are more than <br />100 acres in size. In a typical area of this com- <br />plex Coni loam has slopes of 3 to 15 percent; the <br />Rock outcrop is mainly near nearly vertical cliffs <br />(plate IV, right). <br />Included in mapping are areas of Brussett loam, <br />3 to 9 percent slopes, Kettle sandy loam, Stony <br />rough land, and Kettle and Falcon soils. Taken <br />together these areas make up 15 percent of each <br />mapped area. <br />Surface runoff is rapid. The hazard of water <br />erosion is moderate to severe, especially in the <br />' <br />spring during snowmelt. <br />Most areas of this complex are used for grazing <br />livestock. The panaramic view from areas of this <br />complex make it a popular site for homes. (Capa- <br />t <br />bility unit VIIe -1; Loamy Park range site) <br />I <br />