LOCATION TURRET CO
Established Series
Rev. GB/SJJ
04/2016
TURRET SERIES
The soils of the Turret series are deep, well-drained soils formed in alluvium mainly from crystalline rocks. They are on alluvial fans and valley side slopes. The mean annual precipitation is about 12 inches and the mean annual air temperature is about 44 degrees F.
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Aridic Argiustolls
TYPICAL PEDON: Turret gravelly sandy loam grassland. (Colors are for dry soil unless otherwise noted )
A1--0 to 5 inches; grayish brown (10YR 5/2) gravelly sandy loam, very dark grayish brown (10YR 3/2) when moist; moderate, fine, granular structure; soft, very friable; 20 percent gravel; neutral; clear, smooth boundary. (4 to 8 inches thick)
A3--5 to 9 inches grayish brown (10YR 5/2) gravelly sandy loam, very dark grayish brown (10YR 3/2) when moist; weak medium subangular blocky structure that parts to fine granules; slightly hard very friable; 20 percent gravel; neutral; clear, smooth boundary. (3 to 7 inches thick)
B2t--9 to 18 inches brown (10YR 5/3) gravelly sandy clay loam, brown (10YR 4/3) when moist; moderate medium prismatic structure that parts to medium subangular blocks; slightly hard very friable, slightly sticky and slightly plastic; peds are hard friable; thin continuous clay films on peds and as fillings in root channels and pores; 20 percent gravel; neutral; gradual smooth boundary. (6 to 18 inches thick)
B3--18 to 24 inches, yellowish brown (10YR 5/4) gravelly sandy loam, dark yellowish brown (10YR 4/4) when moist; weak medium subangular blocky structure; slightly hard, very friable; thin patchy clay films on some peds and in some root channels and pores; 20 percent gravel; neutral; gradual wavy boundary. (2 to 17 inches thick)
IIC--24 to 60 inches, light yellowish brown (10YR 6/4) very gravelly sandy loam, yellowish brown (10YR 5/4) when moist; massive; slightly hard very friable; 70 percent gravel and some cobbles; noncalcareous; slightly alkaline.
TYPE LOCATION: Chaffee County Colorado; 650 feet east and 1,750 feet south of the NW corner of Sec. 25, and 150 feet east of the Forest Service road; T. 50 N., R. 7 E.
RANGE IN CHARACTERISTICS: The Turret soils typically are noncalcareous to depths of more than 60 inches but depth to uniformly calcareous material normally ranges from 40 to more than 60 inches. Depth to the loamy-skeletal IIC horizon ranges from 20 to 50 inches. Depth to the base of the argillic horizon ranges from 15 to 50 inches. Rock fragments range from 15 to 35 percent by volume in a major part of the solum and C horizon above the IIC horizon, but grades to 35 to 75 percent above depth of 50 inches. Rock fragments are typically less than 3 inches in diameter. The solum and C horizon range from slightly acid to slightly alkaline
The A horizon has hue of 2.5Y through 7.5YR value of 4 or 5 dry, 2 or 3 moist and chroma of 1 through 3.
The B2t horizon has hue of 2.5Y through 7.5YR, value of 5 through 7 dry, 3 through 6 moist, and chroma of 1 through 4. It is usually gravelly sandy clay loam but clay averages 18 to 35 percent, silt 5 to 30 percent, and sand 42 to 75 percent.
The IIC horizon has hue of 2.5Y through 7.5YR. It is typically very gravelly or extremely gravelly sandy loam with less than 18 percent clay in the fine earth fraction .
COMPETING SERIES: These are the
Assinniboine,
Bostwick,
Cheesman
Duffson,
Evanston,
Jarre,
Joplin,
Kevin,
Marmarth,
Morval,
Perrypark,
Peyton,
Telstad and
Villa Grove series. Assinniboine Evanston, Joplin, Kevin, Morval, Telstad and Villa Grove soils are calcareous in the lower part of the solum and C horizon, have continuous horizons of secondary calcium carbonate accumulation and have less than 35 percent coarse fragments in their C horizons Bostwick soils have less than 35 percent fine or coarser sand in the B2t horizon contain 2 to 20 percent mica platelets and have more than 18 percent clay and less than 35 percent coarse fragments in the C horizon. Cheesman, Duffson, and Marmarth soils have bedrock above depth of 40 inches. Jarre soils have argillic horizons with less than 35 percent fine or coarser sand. Perrypark soils have hue of 5YR or redder and contain large amounts of medium and coarse angular sand. Peyton soils have a large proportion of medium and coarse angular sand, have "hard setting" properties when dry and have C horizons with less than 35 percent coarse fragments
GEOGRAPHIC SETTING: The Turret soils are on alluvial fans and valley side slopes. Slope gradients range from 0 to to about 12 percent. The soils formed in alluvial parent materials derived mainly from crystalline rocks. At the type location the average annual precipitation is 12 inches with peak periods of precipitation in the spring and summer. The mean annual temperature is 44 degrees F., and the mean summer temperature is 62 degrees F.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Tigiwon and
St.
Elmo soils. Tigiwon soils have sandyskeletal IIC horizons. St Elmo soils are coarse textured and have calcic horizons.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: These soils are used as irrigated cropland and as native pastureland. Native vegetation is pinyon, juniper grasses and shrubs.
DISTRIBUTION AND EXTENT: Mountain valleys of central Colorado. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Chaffee County, Colorado, 1974.
REMARKS: OSED scanned by and cleaned up by Colorado. Last revised by state on 8/74.
National Cooperative Soil Survey
U.S.A.