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Established Series
<br />REV: VKH/DTH/RLM
<br />11 /82
<br />The Valleycity series consists of shallow, well drained, moderately permeable soils
<br />formed in colluvium and residuum from calcareous sandstone and shale. These soils
<br />occur on backslopes, ridges, and hogbacks with slopes of 8 to 25 percent. Average
<br />annual precipitation is 5 to 8 inches and mean annual temperature is about 53 degrees
<br />F.
<br />TAXONOMIC CLASS: Loamy-skeletal, mixed, mesic Lithic Haplargids
<br />TYPICAL PEDON: Valleycity very stony fine sandy loam, rangeland. (Colors are for air-
<br />dry soil unless noted.)
<br />A--O to 3 inches; light brown (7.5YR 6/4) very stony fine sandy loam, brown (7.5YR 5/4)
<br />moist; weak medium platy structure parting to weak fine and very fine subangular
<br />blocky; soft, very friable; few fine and very fine roots; many fine and very fine interstitial
<br />pores; 10 percent stones, 20 percent cobbles, and 30 percent pebbles on the surface,
<br />15 percent cobbles and 15 percent pebbles; moderately calcareous; moderately alkaline
<br />(pH 8.4); clear wavy boundary. (2 to 5 inches thick)
<br />Bt--3 to 8 inches; brown (7.5YR 5/4) extremely stony sandy clay loam, dark brown
<br />(7.5YR 4/4) moist; moderate medium and fine subangular blocky structure; slightly hard,
<br />friable, sticky and plastic; many medium, fine and very fine roots; many medium, fine
<br />and very fine tubular pores; few thin patchy clay films in pores and as bridging between
<br />sand grains; 20 percent stones, 30 percent cobbles, 20 percent pebbles; moderately
<br />calcareous; moderately alkaline (pH 8.2); clear wavy boundary. (4 to 6 inches thick)
<br />BCk--B to 12 inches; pink (7.5YR 7/4) extremely stony sandy loam, light brown (7.5YR
<br />• 6/4) moist; weak fine subangular blocky structure; hard; friable; slightly sticky and slightly
<br />TYPE LOCATION: Grand County, Utah. About 4.5 miles south of Cresent Junction on
<br />U. S. Highway 160; East of railroad tracks; SE 1/4, SW 1/4, sec. 22, T. 22 S., R. 19 E.
<br />RANGE IN CHARACTERISTICS: Depth to bedrock ranges from 10 to 20 inches. The
<br />particle-size control section ranges in texture from very stony sandy clay loam, or very
<br />stony clay loam. Clay content ranges from 18 to 35 percent. Rock fragment content is 35
<br />to 70 percent in the particle-size control section and consists of mainly of stones and
<br />cobbles, but some pebble size fragments are present. The mean annual soil
<br />temperature is 54 to 59 degrees F.
<br />The A horizon has hue of 7.5YR, value 5 or 6 dry, 4 or 5 moist, and chroma of 3 or 4.
<br />The Bt horizon has hue of 7.5YR, value 5 or 6, dry, 4 or 5 moist, and chroma of 4.
<br />Texture is very gravelly clay loam, very stony sandy clay loam, or very stony clay loam.
<br />The BCk horizon has hue of 10YR or 7.5YR, value of 6, 7, or 8 dry, 4, 5, or 6 moist, and
<br />chroma of 3 or 4. It is strongly calcareous or very strongly calcareous. Texture is very
<br />stony sandy clay loam, very gravelly clay loam, or very stony clay loam. In some pedons,
<br />gravelly sandy loam, very stony clay loam, clay loam, very gravelly loam, very stony clay
<br />loam, and very stony loam strata are present.
<br />plastic; common medium, fine and very fine roots; many fine, very fine and common
<br />medium pores; 30 percent stones, 20 percent cobbles, 20 percent pebbles; very strongly
<br />calcareous; strongly alkaline (pH 8.8); abrupt irregular boundary. (1 to 5 inches thick)
<br />R--12 inches; fractured calcareous sandstone.
<br />COMPETING SERIES: These are the Hoot, Mirkwood m, Theon (T), and Waucaba
<br />series. All these soils receive most of their annual precipitation during the winter months
<br />. and receive little or no precipitation after the summer solstice. Hoot soils have loam, sik
<br />(REVISED 9/99) 2.04.9-55
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