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<br />12
<br />
<br />Of minor extent in this unit are Coldcreek, Tolman,
<br />Rogert, and Woodhall soils and Rock outcrop. The
<br />Coldcreek soils are deep and moderately coarse
<br />textured. The Tolman and Rogert soils are shallow. The
<br />Woodhall soils are moderately deep over ign'30 JS rock.
<br />Rock outcrop consists of long escarpments of
<br />sandstone.
<br />This unit is used as woodland and for wildl fe habitat
<br />and recreation.
<br />Wildlife such as elk. mule deer, black bear, blue
<br />grouse, band-tailed pigeon, squirrel. snowshoe hare,
<br />chipmunk, porcupine, and limited numbers of m~untain
<br />lion and lynx inhabit this unit. Trees and brusll proVide
<br />food and cover for these species.
<br />This unit is poorly suited to homesite devel ~pment.
<br />The main limitations are steepness of slope ane! large
<br />rock fragments.
<br />
<br />16. Libeg-Gelkie-Coutis
<br />
<br />Deep, well drained, gently sloping to very ste,"p soils; on
<br />uplands, fans. terraces, and side slopes along
<br />drainageways
<br />
<br />This map unit is in the western and northwestern parts
<br />of the survey area. Slope is 3 to 45 percent. The
<br />vegetation is mainly grass. Elevation is 8,300 to 9,800
<br />feet. The average annual precipitation is about . 4 to 23
<br />inches, the average annual air temperature is 40 to 45
<br />degrees F, and the average frost-free season is 50 to 75
<br />days.
<br />This unit makes up about 4 percent of the survey area.
<br />It is about 35 percent Libeg soils, 20 percent Gelkie
<br />soils. and 15 percent Coutis soils. The remainin(l 30
<br />percent is components of minor extent.
<br />Libeg soils are on fans, terraces, and side slopes
<br />along deeply entrenched draina!leways. These soils are
<br />deep and well drained. They formed in alluviul1 and
<br />colluvium derived dominantly from mixed sediI11E,nt. The
<br />soils are medium textured and have many sm all rock
<br />fragments throughout.
<br />Gelkie soils are on uplands. These soils arE deep and
<br />well drained. They formed in alluvium and colluvium
<br />derived dominantly from sandstone and siltstone. The
<br />surface layer is moderately coarse textured. The subsoil
<br />is medium textured. Below this, to a depth of 60 inches
<br />or more, the soils are moderately coarse textured.
<br />Coutis soils are on fans and terraces. These soils are
<br />deep and well drained. They formed in alluviul11 and
<br />colluvium derived dominantly from mixed sediment. The
<br />soils are moderately coarse textured throughout.
<br />Of minor extent in this unit are deep BreeCE' soils,
<br />moderately deep Benteen, Lymanson, and Woodhall
<br />soils, and shallow Rogert soils.
<br />This unit is used as rangeland.
<br />Wildlife such as antelope, elk, cottontail, grou,;e,
<br />snowshoe hare, coyote, and limited numbers of l1ule
<br />deer, bear, and mountain lion intlabit this unit.
<br />The main limitation of this unit for homesite
<br />development is steepness of slope; however, the less
<br />
<br />Soil survey
<br />
<br />sloping areas of the unit are well suited to homesite
<br />development.
<br />
<br />17. Larkson-Mortenson-Wetmore
<br />
<br />Shallow and deep, well drained, sloping to very steep
<br />soils; on mountainsides, ridges, fans, and foot slopes
<br />
<br />This map unit is in the north-central part of the survey
<br />area. Slope is 5 to 50 percent. The vegetation is mainly
<br />conifers. Elevation is 7,000 to 8,600 feet. The average
<br />annual precipitation is about 21 to 25 inches. the
<br />average annual air temperature is 42 to 44 degrees F,
<br />and the average frost-free season is 75 to 90 days.
<br />This unit makes up about 1 percent of the survey area.
<br />It is about 40 percent Larkson soils, 15 percent
<br />Mortenson soils, and 15 percent Wetmore soils. The
<br />remaining 30 percent is components of minor extent.
<br />Larkson soils are on fans and foot slopes. These soils
<br />are deep and well drained. They formed in alluvium and
<br />colluvium derived dominantly from clayey shale. The
<br />surface is covered with a mat of pine litter. The surface
<br />layer is medium textured and has a few large rock
<br />fragments. Below this, to a depth of 60 inches or more,
<br />the soils are fine textured.
<br />Mortenson soils are on north- and west-facing
<br />mountainsides. These soils are deep and well drained.
<br />They formed in colluvium and residuum derived
<br />dominantly from granite. The surface is covered with a
<br />mat of needles. The surface layer is medium textured
<br />and has many large rock fragments. Below this, to a
<br />depth of 60 inches or more, the soils are fine textured
<br />and have many rock fragments.
<br />Wetmore soils are on ridges and on south- and east-
<br />facing mountainsides. These soils are shallow and well
<br />drained. They formed in residuum derived dominantly
<br />from granite. The surface is covered with a mat of
<br />needles, leaves, and twigs. The soils are moderately
<br />coarse textured and have many rock fragments. Granite
<br />is at a depth of 14 inches.
<br />Of minor extent in this unit are Castner and Ring soils
<br />and Rock outcrop. The Castner soils are shallow over
<br />siltstone. The Ring soils are deep, are fine textured. and
<br />have many rock fragments.
<br />This unit is used as woodland and for wildlife habitat
<br />and recreation.
<br />Wildlife such as mule deer, turkey, cottontail, elk,
<br />grouse, and limited numbers of black bear, bobcat,
<br />mourning dove, and band-tailed pigeon inhabit this unit.
<br />This unit is poorly suited to homesite development.
<br />The main limitations are high shrink-swell potential, slow
<br />permeability, and steepness of slope. In some areas the
<br />shallow depth to bedrock is also a limitation.
<br />
<br />18. Rubble Land-Rock outcrop
<br />
<br />Areas of rock debris and Rock outcrop; on high
<br />mountain slopes and peaks
<br />
<br />This map unit is in the western part of the survey area.
<br />It is characterized by large areas of rockslides and Rock
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