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a few individual pines and small shrubs have grown on a thin <br />soil base around the edges of the mine dump. In the area be- <br />tween the Jonathan mine and the Cash mine, vegetation is esti- <br />mated to cover approximately 608 of the south facing land sur- <br />_ face. Several small stands of pine and aspen trees and numer- <br />` ous juniper trees can be found here in a meadow composed of <br />native grasses. These grasses are predominantly a mixture of <br />Slender Wheat-grass, Mountain Muhly, and Parry Oat-grass with <br />bunches of Thurber Fescue. <br />Soils Information <br />The U. S. Department of Agriculture's Soil Conservation Ser- <br />vice has mapped the soils covering this area as the Juget-Rock <br />Outcrop Complex. This rock complex is composed of about 508 <br />very gravelly, sandy loam, about 308 rock outcrop, and small <br />areas of soils near drainageways that can make up to 208 of <br />each mapped area. <br />The Juget Complex consists of shallow, somewhat excessively <br />drained soils that have formed on mountain slopes and ridges <br />in a sandy residium weathered from granite. It is found on <br />slopes with a gradient of between 98 to 598, and at elevations <br />t between 6,300 to 8,200 feet. A representative profile of the <br />Juget Complex reveals a six inch surface layer of dark gray, <br />very gravelly, sandy loam and an underlying layer about five <br />.- inches thick of brown, very gravelly, loamy material on a <br />granite surface. The soil reaction of the Juget Complex is <br />slightly acid. The Juget soils have rapid permeability and a <br />low available water capacity. <br />The major rock outcrop in the Juget-Rock Outcrop Complex in <br />this area is the Boulder Creek granite. The Boulder Creek <br />granite ranges from a very coarse-grained pink and black mot- <br />tled biotite granite to a medium-grained quartz monzonite <br />gneiss. Zt is commonly a dark gray color and forms prominent <br />outcrops. <br />The small areas of soils near drainageways are classified as <br />either Peyton or Allens Park soils. The Peyton soils are <br />formed on upland hills and valley side slopes in well-drained, <br />weathered, loamy and sandy material that has been locally <br />transported. It is found on slopes with a gradient of between <br />58 and 208. A representative profile of this soil reveals a <br />surface layer of dark gray, very gravelly, loamy sand about <br />eleven inches thick. The subsoil is about thirty-two inches <br />thick and is a brown, gravelly, sandy, clay loam that grades <br />into a gravelly, coarse, sandy loam. The substratum extends <br />to a depth of sixty inches or more and is a pale brown, grav- <br />elly, sandy loam. A moderate permeability and water capacity <br />and a neutral soil reaction characterize the Peyton soils. <br />• Tlie Allens Park soils arc formed on mountain slopes in loamy <br />colluvium and residium weathered from granite. These are mod- <br />erately deep, well-drained soils found on slopes with gradi- <br />• ants of between 158 and 608 at elevations between 6,300 feet <br />to 8,200 feet. A representative profile of this soil exposes <br />a surface layer about two inches thick composed of a dark <br />gray, gravelly, sandy loam. The subsurface layer is about <br />eight inches thick and is a light brownish-gray colored, grav- <br />elly, sandy loam, Alight grayish-brown, gravelly, sandy loam <br />that has seams and nodules of brown, gravelly, sandy, clay <br />loam in the lower part is found below this subsurface layer. <br />A brown, gravelly, sandy, clay loam about nine inches thick <br />forms the subsoil. Partly weathered Boulder Creek granite <br />underlies the subsoil at a depth of about twenty-six inches. <br />The surface layer has a neutral soil reaction, while the sub- <br />soil is slightly acid. The Allens Park soils have a moderate <br />permeability and a low water capacity. <br />At lower elevations, the native vegetation found in the Juget- <br />•• Rock outcrop Complex is mainly Ponderosa pine and, at higher <br />_ elevations, it is Douglas-fir and Engelmann spruce. A sparse <br />understory of grass is usually found in the Juget Complex <br />-14- <br />