LOCATION PARKVIEW COEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Ustollic Haplocryalfs
TYPICAL PEDON: Parkview very stony loam - grassland. (Colors are for dry soil unless otherwise noted.)
A1--0 to 6 inches; grayish brown (10YR 5/2) very stony loam, very dark grayish brown (10YR 3/2) moist; strong fine crumb structure; soft, very friable, slightly sticky, slightly plastic; 5O percent stones; slightly alkaline (pH 7.4); clear wavy boundary. (3 to 6 inches thick)
B1--6 to 9 inches; grayish brown (10YR 5/2) extremely stony loam, very dark grayish brown (10YR 3/2) moist; moderate fine subangular blocky structure that parts to medium granules; slightly hard, very friable, slightly sticky, slightly plastic; peds are hard; few thin glossy patches on faces of peds; 60 percent stones; slightly alkaline (pH 7.6); gradual wavy boundary. (4 to 7 inches thick)
B2t--9 to 30 inches; brown (10YR 5/3) extremely stony sandy clay loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; peds are very hard, firm; moderate continuous wax-like coatings on faces of peds and rock fragments; wax-like coatings and fillings in root channels; 60 percent stones; slightly alkaline (pH 7.6); gradual wavy boundary. (8 to 33 inches thick)
B3--30 to 34 inches; brown (10YR 5/3) extremely stony light sandy clay loam, brown (10YR 4/3) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; peds are very hard, friable; common thin wax-like patches on faces of peds and in root channels; 70 percent stones; slightly alkaline (pH 7.6); gradual wavy boundary. (O to 6 inches thick)
IIC--34 to 40 inches; noncalcareous sandy loamstone and soft sandstone.
TYPE LOCATION: Jackson County, Colorado; approximately 1,580 feet east and 1,280 feet south of the northwest corner of Sec. 3, T. 6 N., R. 78 W.
RANGE IN CHARACTERISTICS: Mean annual soil temperature is about 41 degrees F., and the mean summer soil temperature is about 51 degrees F. Usually the solum extends to the bedrock, but thin C horizons occur in some pedons. Depth to the paralithic contact ranges from 20 to 40 inches. Depth to the base of the argillic horizon ranges from 15 to 40 inches. Rock fragments range from 35 to 80 percent by volume in a major part of the solum and C horizon above the bedrock and are mainly 10 to 24 inches in diameter.
The A horizon has hue of 5Y through 7.5YR, value of 4 or 5 dry, 2 or 3 moist, and chroma of 1 through 3. It ranges from slightly acid to mildly alkaline.
The B2t horizon has hue of 5Y through 7.5YR, value of 5 through 7 dry, 3 through 6 moist, and chroma of 1 through 6. It is typically extremely stony sandy clay loam, loam or clay loam, but averages 18 to 35 percent clay, 5 to 45 percent silt, and 15 to 75 percent sand. This horizon ranges from slightly acid to mildly alkaline.
The C horizon, if present, has hue of 5Y through 7.5YR. It ranges from slightly acid to mildly alkaline.
COMPETING SERIES: These are the Blaine, Bowen, Buena Vista, Elwood, Ess, Fourmile, Hoodle, Libeg, Mullinville, Nathrop, Norriston, Packer, Quander, Stuckcreek, Tahquats, Thiel, Winada, and Woodhall series. Bowen, Buena Vista, Elwood, Nathrop, and Woodhall soils have a lithic contact at depth of less than 40 inches. Ess, Fourmile, Packer, Stuckcreek, Tahquats, Thiel, Quander, Mullinville, Norriston, Hoodle, and Libeg soils lack a paralithic contact at depths of less than 40 inches. Winada soils are calcareous in the lower part of the solum and C horizons and have continuous horizons of secondary calcium carbonate accumulation.
GEOGRAPHIC SETTING: Parkview soils are on gently to steeply sloping upland hills and ridges where sedimentary rock occur relatively near to the surface. Slopes typically range from 2 to 20 percent or more. These soils formed in noncalcareous, moderately fine textured parent sediments weathered residually from underlying sandy shales, sandstones, and loamstones. At the type location the average annual precipitation is 18 inches with peak periods of precipitation during the spring and early summer. The average annual temperature is 36 degrees F., and the average summer temperature is 52 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Gelkie soils. Gelkie soils have continuous horizons of secondary carbonate accumulation and lack a paralithic contact at depths of less than 40 inches.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: These soils are used principally as native pastureland. Native vegetation is sheep fescue, bluebunch wheatgrass, Idaho fescue, and bitterbrush.
DISTRIBUTION AND EXTENT: High mountain valleys of north-central Colorado. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Jackson County, Colorado, 1973.
REMARKS: Last updated by the state 11/73.
This series was previously classified as a Ustic Argicryoll. However, the typical pedon lacked the necessary 10 inches of mollic colors. Therefore, the series is reclassifed to an Ustollic Haplocryalf. Only the classification was updated. 5/2005