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<br />yellowish brown gravelly sandy loam about 33=
<br />thick; it is about 50 percent gravel. The imneri
<br />material is light yellowish brown gravelly light sands
<br />loam.
<br />Permeability is moderately rapid, and the available
<br />water capacity is low.
<br />These soils are used mainly for grazing.
<br />Representative profile of Buffmeyer sandy loam, .4
<br />to 18 percent slopes, in native grass, 800 feet north of
<br />southwest corner of sec. 9, T. 10 N., R. 78 W.:
<br />Al -0 to 8 inches; grayish brown (10YR 5/2) light sandy
<br />loam, very dark grayish brown (10YR 3/2) moist;
<br />moderate fine granular structure; soft, very fri-
<br />able, nonsticky and nonplastic; many fine and
<br />medium roots; 5 percent gravel and cobbles; neu-
<br />tral; clear smooth boundary.
<br />A2 -8 to 13 inches; very pale brown (10YR 7/3) light
<br />sandy loam, brown (10YR 5/3) moist; weak thin
<br />platy structure parting to fine granular; soft,
<br />very friable, nonsticky and nonplastic; many fine
<br />and few medium roots; 5 percent gravel and cob-
<br />bles; neutral; clear smooth boundary.
<br />B21t -13 to 21 inches; brown (10YR 5/3) gravelly sandy
<br />loam, dark brown (10YR 4/3) moist; moderate
<br />medium subangular blocky structure; slightly
<br />hard, very friable, nonsticky and nonplastic; few
<br />fine and medium roots; 40 percent gravel and some
<br />cobbles; many thin patchy clay films on peds, in
<br />some pores, and bridging between some sand
<br />grains; neutral; gradual wavy boundary.
<br />B22 -21 to 40 inches; yellowish brown (10YR 5/4) grav-
<br />elly sandy loam, dark yellowish brown (10YR 4/4)
<br />moist; moderate medium subangular blocky struc-
<br />ture; slightly hard, very friable, nonsticky and
<br />nonplastic; few fine roots; 50 percent gravel and
<br />some cobbles; many thin patchy clay films on
<br />peds, in pores, and bridging between sand grains;
<br />neutral; gradual wavy boundary.
<br />B3-40 to 46 inches; yellowish brown (10YR 5/4) gravelly
<br />light sandy loam, dark yellowish brown (10YR
<br />4/4) moist; weak medium subangular blocky struc-
<br />ture; slightly hard, very friable, nonsticky and
<br />nonplastic; 50 percent gravel and some cobbles;
<br />few thin patchy clay films on peds and as bridges
<br />between sand grains; neutral; diffuse wavy bound-.
<br />C-46 to 1 0 inches; light yellowish brown (10YR 6/4)
<br />gravelly light sandy loam, yellowish brown (10YR
<br />5/4) moist; massive; slightly hard, very friable,
<br />nonsticky and nonplastic; 50 percent gravel and
<br />some cobbles; neutral.
<br />The B2t and C horizons are 35 to 70 percent coarse frag-
<br />ments V4 inch to 10 inches in diameter.
<br />By— Buffmeyer sandy loam, 4 to 18 percent slopes.
<br />This soil is on alluvial fans and high terraces, below
<br />areas of crystalline rock.
<br />Included with this soil in mapping are a few small
<br />areas of soils that are similar to Buffmeyer soils but
<br />that have a sandy clay or clay loam B horizon or that
<br />have less than 35 percent coarse fragments and are
<br />moderately deep over red shale beds.
<br />Runoff is slow. The hazards of soil blowing and
<br />water erosion are moderate.
<br />Most of the acreage of this soil is used for grazing.
<br />Capability unit Vle-3, nonirrigated; Mountain Loam
<br />range site.
<br />Bundyman series
<br />The Bundyman series consists of moderately deep,
<br />well drained soils that formed in weathered shale. The
<br />soils are underlpin by ealcareous shale at a depth of 20
<br />In a re_
<br />brownish
<br />subsoil is
<br />thick The
<br />clay loam C
<br />inches.
<br />Permeabii
<br />low.
<br />These soils are
<br />are irrigated and 'are . =.
<br />Representative proLe
<br />area of Boettcher-Bit-T
<br />grass, 425 feet east and '2 ,
<br />corner of sec. 20, T 8 N., R.
<br />and ridges on uplands
<br />8,800 feet. Slopes are
<br />ation is mainly western
<br />- 2.dberg bluegrass, pine
<br />zreasewood. The mean
<br />Ales, the mean annual
<br />F, and the frost -free
<br />.°face layer is light
<br />inches thick. The
<br />am about 9 inches
<br />pale brown heavy
<br />depth of about 25
<br />water capacity is
<br />- ing. Some areas
<br />asture.
<br />clay loam in an
<br />~" - .2 4 'f-1-ion in native
<br />a -± of the northwest
<br />79 .
<br />A1-0 to 4 inches; light nn ,; ; t YR 6/2) heavy
<br />clay loam, dark gra _• 4/2) moist;
<br />moderate medium , z.:1-_ -cure; slightly
<br />hard, very friable, EL. -�.k 'and slightly
<br />plastic; few fine and me=w -•; mildly alka-
<br />line; gradual wavy boundary.
<br />B2-4 to 13 inches; pale brown (1O1Y fi ) heavy clay
<br />loam, dark brown (10YR 4/3) moist; moderate
<br />coarse prismatic structure parting to coarse angu-
<br />lar blocky; slightly hard, friable, sticky and plas-
<br />tic; few fine roots; patchy clay films on peds and
<br />in pores; mildly alkaline; gradual wavy boundary.
<br />Cca -13 to 25 inches; pale brown (10YR 6/3) heavy clay
<br />loam, brown (10YR 4/3) moist; massive; ex-
<br />tremely hard, very firm, sticky and plastic; con-
<br />cretions and thin seams of secondary calcium
<br />carbonate; strongly calcareous; moderately alka-
<br />line; gradual wavy boundary.
<br />C2r -25 to 60 inches; calcareous shale.
<br />The Al horizon is neutral or mildly alkaline. The B2
<br />horizon is heavy clay loam or clay. The B2 horizon ranges
<br />from neutral to moderately alkaline. Calcium carbonate
<br />equivalent of the Cca horizon ranges from 3 to 14 percent.
<br />The Cca horizon is moderately alkaline or strongly alkaline.
<br />Bundyman soils are mapped only in association with
<br />Boettcher soils.
<br />�Ealiiir series
<br />The Cabin series consists of deep, well drained soils
<br />that formed in gravelly alluvium. The soils are under-
<br />lain by very gravelly sand at a depth of 20 to 40
<br />inches. They are on high terraces and benches between
<br />elevations of 8,200 and 9,200 feet. Slopes are 2 to 5
<br />percent. The native vegetation is mainly sheep fescue,
<br />pine needlegrass, muttongrass, streambank wheat -
<br />grass, bluebunch wheatgrass, big sagebrush and low
<br />rabbitbrush. The mean annual precipitation is 15 to
<br />16 inches, the mean annual air temperature is 35° to
<br />37° F, and the frost -free season is 30 to 40 days.
<br />In a representative profile the surface layer is dark
<br />grayish brown sandy loam about 4 inches thick. The
<br />subsoil is brown gravelly sandy clay loam and pale
<br />brown very gravelly sandy loam. about 22 inches thick_
<br />The underlying material is pale brown very gravelly
<br />sand.
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