LOCATION ROSHE SPRINGS UTEstablished Series
TAXONOMIC CLASS: Fine-loamy, carbonatic, mesic Typic Calciaquolls
TYPICAL PEDON: Roshe Springs silt loam--cultivated. (Colors are for dry soil unless otherwise noted.)
Ap--0 to 7 inches; gray (2.5Y 5/1) silt loam, very dark gray (2.5Y 3/1) moist; weak medium and fine granular structure; hard, friable, slightly sticky and slightly plastic; many fine roots; few medium pores; violently effervescent, slightly alkaline (pH 7.5); clear smooth boundary. (4 to 7 inches thick.)
ABk--7 to 12 inches; gray (2.5Y 5/1) loam, very dark gray (2.5Y 3/1) moist; moderate medium subangular structure; very hard, firm, slightly sticky and slightly plastic; many fine and medium roots; common fine pores; violently effervescent; slightly alkaline (pH 7.5); clear irregular boundary. (4 to 10 inches thick.)
Bkg1--12 to 33 inches; gray (N 6/0) loam, gray (5Y 5/1) moist; massive; hard, firm, slightly sticky and slightly plastic; many fine roots; common fine and medium pores; violently effervescent; slightly alkaline (pH 7.7); clear smooth boundary. (10 to 25 inches thick.)
Bkg2--33 to 52 inches; light gray (N 7/0) loam, gray (5Y 5/1) moist; massive; hard, very friable; discontinuously weakly cemented; few fine and medium roots; few medium and large pores; violently effervescent; many fine carbonate nodules; slightly alkaline (pH 7.8); clear smooth boundary. (16 to 24 inches thick )
Cg--52 to 80 inches; gray (5Y 6/1) sandy loam, dark gray (5Y 4/1) moist; massive; slightly hard, friable; few medium roots; few fine pores; common medium prominent light olive brown (2.5Y 5/6) moist masses of iron accumulation; violently effervescent; slightly alkaline (pH 7.8).
TYPE LOCATION: Weber County, Utah; about 1 mile south and 0.25 mile northeast of Hot Springs Resort; approximately 440 feet north and 1,500 feet west of the southeast corner of section 24, T. 7 N., R. 2 W.; USGS Plain City 7.5 minute topographic quadrangle; 41 degrees 19 minutes 21 seconds north latitude and 112 degrees 0 minutes 42 seconds west longitude, NAD83; UTM zone 12N 415341E, 4575059N, NAD83.
RANGE IN CHARACTERISTICS:
Mean annual soil temperature - 47 to 53 degrees F.
The soils have characteristics associated with wetness in the A horizon or in the upper part of the Bkg horizons. Depth to water table is 0 to 36 inches. The zone of carbonate enrichment begins in the lower part of the A horizon and extends into the Bkg horizons. Calcium carbonate equivalent ranges from 40 to 80 percent. The soil is slightly to strongly salt affected. Soils having a peaty layer 1 to 5 inches thick on the surface are within the range of the series.
The Ap and ABk horizons have hue of 10YR or 2.5Y, values of 3 to 5 dry and 2 to 3 moist, and chroma of 1.5 or less. Texture of the A horizon is silt loam, loam or silty clay loam. The Ap horizon commonly has about 6 to 10 percent organic matter, and it ranges from 3 to 20 percent.
The Bkg horizons have hue of 2.5Y or 5Y or is neutral gray, value is 5 through 8 dry and 4 through 7 moist; and chroma is 1 or less, where the soil is mottled it has chroma of 2 or less. Texture of the 10 to 40 inch control section is loam or silt loam. Carbonate nodules and discontinuous cementation by carbonates are within the range of the series.
Texture of the Cg horizon is fine sandy loam to clay.
COMPETING SERIES: There are currently no other series in this family.
GEOGRAPHIC SETTING: Roshe Springs soils are on low lake terraces and flood plains. These soils formed in alluvium and lacustrine deposits derived dominantly from limestone, quartzite, sandstone, and gneiss. Slopes are 0 to 3 percent. Elevation ranges from 4,200 to 5,100 feet. The climate is dry subhumid. The mean annual precipitation is 12 to 18 inches, the mean annual temperature is 45 to 54 degrees F., and the frost-free period is 100 to 175 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Kirkham, Ironton, Logan, Sunset, and Woods Cross soils. Kirkham and Sunset soils do not have calcic horizons and contain less than 40 percent calcium carbonate equivalent.
DRAINAGE AND PERMEABILITY: Poorly drained; low or very high surface runoff; moderate or moderately slow permeability (moderately high or high saturated hydraulic conductivity).
USE AND VEGETATION: Roshe Springs soils are used for meadow pasture, but some areas are drained and are used for irrigated cropland. The native vegetation is mainly inland saltgrass, sedges, foxtail, wiregrass, and some rushes in the wetter areas.
DISTRIBUTION AND EXTENT: Northern Utah. These soils are moderately extensive. MLRA 28A.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona.
SERIES ESTABLISHED: Weber County (Davis-Weber Area), Utah, 1967.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - The zone from the soil surface to 12 inches (Ap and ABk horizons).
Calcic horizon - The zone from 7 to 52 inches (ABk, Bkg1, and Bkg2 horizons).
Particle-size control section - The zone from 10 to 40 inches (Bkg1 horizon and parts of the ABk and Bkg2 horizons).
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 142-143, Table 11 of the Soil Survey of Davis-Weber Area, Utah. The pH values in the typical pedon are from saturated paste.