LOCATION BARTON UTEstablished Series
TAXONOMIC CLASS: Coarse-loamy, mixed, superactive, mesic Typic Argixerolls
TYPICAL PEDON: Barton gravelly loam--rangeland. (Colors are for dry soil unless otherwise noted.)
A1--0 to 5 inches; dark grayish brown (10YR 4/2) gravelly loam, very dark grayish brown (10YR 3/2) moist; weak medium granular structure; soft, friable, slightly sticky and nonplastic; few mica flakes; many fine roots; few fine pores; neutral (pH 6.8); clear smooth boundary. (3 to 6 inches thick)
A2--5 to 13 inches; dark grayish brown (10YR 4/2) gravelly loam, very dark grayish brown (10YR 3/2) moist; weak medium granular structure; slightly hard, friable, slightly sticky and slightly plastic; few mica flakes; many fine roots; common fine roots; common fine pores; neutral (pH 6.8); clear smooth boundary. (4 to 10 inches thick)
Bt--13 to 19 inches; dark grayish brown (10YR 4/2) gravelly loam, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few mica flakes; common fine roots; common fine pores; common thin clay films; neutral (pH 6.8); clear wavy boundary. (4 to 8 inches thick)
C1--19 to 31 inches; brown (10YR 5/3) very cobbly loam, dark grayish brown (2.5Y 4/2) moist; massive; slightly hard, friable, slightly sticky and nonplastic; few mica flakes; few fine roots and few fine pores; neutral (pH 7.0); clear wavy boundary. (10 to 18 inches thick)
C2--31 to 60 inches; light brownish gray (10YR 6/2) very stony sandy loam, dark grayish brown (10YR 4/2) moist; single grain; neutral.
TYPE LOCATION: Weber County, Utah; on Little Mountain about 1 mile north of the gravel pit; about 1,000 feet west and 350 feet north from the center of section 7, T. 6 N., R. 3 W.
RANGE IN CHARACTERISTICS:
Mollic epipedon thickness - 10 to 19 inches; includes the Bt horizon in some pedons.
Particle-size control section - Clay content: 12 to 18 percent; Rock fragments: 20 to 35 percent, mainly gravel.
Depth to very cobbly or very stony material - 18 to 30 inches.
A1 horizon - Value: 3 or 4 dry, 2 or 3 moist.
Chroma: 2 or 3, dry or moist.
Organic matter content: 2 to 4 percent.
Texture: Gravelly loam, very gravelly loam, stony loam, or very stony loam.
A2 horizon - Value: 3 or 4 dry, 2 or 3 moist.
Chroma: 2 or 3, dry or moist.
Organic matter content: 1 to 3 percent.
Bt horizon - Value: 4 or 5 dry, 3 or 4 moist.
Texture: Gravelly loam or gravelly fine sandy loam.
Clay content: 12 to 18 percent.
Rock fragments: 20 to 35 percent.
Organic matter content: 0.5 to 1 percent.
C horizons - Hue: 10YR or 2.5Y.
Value: 5 or 6 dry, 4 or 5 moist.
Chroma: 2 or 3, dry or moist.
Texture: Very cobbly loam, very stony loam, very cobbly sandy loam, or very stony sandy loam.
Rock fragments: 35 to 60 percent.
Effervescence: Noneffervescent to strongly effervescent.
COMPETING SERIES: This is the Sorrell (T) series. Sorrell soils are moderately deep to paralithic contacts.
GEOGRAPHIC SETTING: Barton soils are on hills above the surrounding lake plain of Great Salt Lake. These soils formed in colluvium and residuum derived from metamorphic rocks such as tillite, fluvial conglomerate, varved slate, and graywacke. Slopes are 5 to 40 percent. The climate is dry subhumid. The mean annual precipitation is 13 to 16 inches. The mean annual temperature is 48 to 52 degrees F. and the mean summer temperature is 68 to 72 degrees F. The frost-free period is 140 to 160 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Leland, Saltair, and Warm Springs soils. Leland soils are fine-loamy, have ochric epipedons and natric horizons, and occur on lake terraces. Saltair soils are fine-silty, have ochric epipedons and salic horizons, and occur on lake plains. Warm Springs soils are fine-loamy, have calcic horizons, and occur on lake terraces.
DRAINAGE AND PERMEABILITY: Well drained; medium or high surface runoff; moderate permeability (moderately high or high saturated hydraulic conductivity).
USE AND VEGETATION: Barton soils are used as rangeland with part of the area used for industrial activities. The native vegetation is mainly Sandberg's bluegrass, threeawn grass, Wyoming big sagebrush, prairie junegrass, stork's bill, and sunflower.
DISTRIBUTION AND EXTENT: Northwestern Utah. These soils are not extensive with about 1,300 acres of the series mapped to date. MLRA 28A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona.
SERIES ESTABLISHED: Weber County, Utah, 1974.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the soil surface to 19 inches (A1, A2, and Bt horizon).
Argillic horizon - The zone from 13 to 19 inches (Bt horizon).
Particle-size control section - The zone from 13 to 19 inches (Bt horizon).
The superactive cation exchange activity class was added in 03/2003 to the taxonomic classification by the National Soil Survey Center on request of the Reno MLRA office, without review of the soil series property data.
ADDITIONAL DATA: The typical pedon at the series type location has partial characterization data by the Soils Laboratory from Utah State University (USU) Logan, UT and is published on pages 138-139, Table 11 of the Soil Survey of Davis-Weber Area, Utah. The pH values in the typical pedon are from the original field description.