LOCATION RENOL UTEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Petrocalcidic Palexerolls
TYPICAL PEDON: Renol stony fine sandy loam--rangeland. (Colors are for air-dry soil unless otherwise noted.)
A1--0 to 3 inches; brown (10YR 5/3) stony fine sandy loam, dark brown (10YR 3/3) moist; weak medium platy structure parting to weak medium granular; soft, very friable, slightly plastic; common very fine and few fine roots; few fine pores; 2 percent of surface covered by stones; neutral (pH 7.0); clear smooth boundary. (3 to 5 inches thick)
A2--3 to 9 inches; brown (10YR 5/3) gravelly loam; dark brown (10YR 3/3) moist; weak fine subangular blocky structure; soft, friable, slightly sticky and slightly plastic; common very fine and few fine roots; few fine pores; 25 percent pebbles; neutral (pH 6.8); clear smooth boundary. (5 to 8 inches thick)
Bt--9 to 17 inches; brown (7.5YR 5/4) very gravelly clay loam, dark brown (7.5YR 3/4) moist; moderate medium subangular blocky structure; hard, firm, sticky and plastic; few fine and very fine roots; common fine and few very fine pores; few thin clay films on faces of peds and in pores; 40 percent pebbles, 10 percent cobbles; neutral (pH 7.0); clear wavy boundary. (5 to 13 inches thick)
Btk--17 to 27 inches; brown (7.5YR 5/4) extremely gravelly clay loam; dark brown (7.5YR 4/4) moist; weak medium subangular blocky structure; hard, firm, sticky and plastic; few very fine, fine and medium roots; few very fine pores; few thin clay films on faces of peds; 40 percent pebbles, 30 percent cobbles; weakly cemented by carbonates; carbonates are coated on rock fragments, disseminated and in veins; strongly calcareous; strongly alkaline (pH 8.8); abrupt smooth boundary. (7 to 15 inches thick)
Bkm--27 to 29 inches; indurated hardpan that has a carbonate cemented laminar capping 1/8 to 1/4 inch thick; clear smooth boundary. (2 to 6 inches thick)
Bkqm--29 to 36 inches; pink (5YR 7/3) very gravelly sandy loam; reddish brown (5YR 5/3) moist; massive; 30 percent pebbles, 20 percent cobbles; strongly cemented with layers up to 1 inch thick that are indurated; brownish yellow (10YR 6/6) silica coating on the underneath side of some rock fragments; strongly calcareous; carbonates are disseminated, coated on rock fragments and in hardpan fragments; strongly alkaline (pH 8.8).
TYPE LOCATION: Juab County, Utah about 2.5 miles west of Highway 91 in the northeast 1/4, southeast 1/4 of sec. 36, R. 16 S., R. 3 W.
RANGE IN CHARACTERISTICS: The mollic epipedon ranges from 8 to 15 inches thick. Depth to hardpan is 20 to 40 inches. The mean annual soil temperature is 47 to 54 degrees F. The mean summer soil temperature ranges from 68 to 71 degrees F. The soil is dry in all parts of the moisture control section for 50 to 60 percent of the time that the soil temperature is above 41 degrees F., at depth of 20 inches. The solum has 35 to 70 percent rock fragments. These soils are neutral to moderately alkaline and noncalcareous in the A and Bt horizons and strongly alkaline and strongly calcareous or very strongly calcareous below the Bt horizon.
The A horizon has hue of 10YR, value of 4 or 5 dry, 2 or 3 moist and chroma of 2 to 3 moist and dry. Reaction is neutral to moderately alkaline.
The Bt horizon has hue of 10YR or 7.5YR, value of 4 through 6 dry, 3 or 4 moist and chroma of 3 or 4 dry. Rock fragments range from 35 to 50 percent by volume. This horizon is very gravelly or very cobbly clay loam, and is neutral or mildly alkaline.
The Btk horizon has hue of 10YR, 7.5YR or 5YR; value of 5 through 7 dry, and 4 or 5 moist and chroma of 3 or 4 dry and moist. Rock fragment content ranges from 35 to 70 percent. Textures range from very gravelly sandy loam to extremely gravelly sandy loam to very gravelly clay loam.
COMPETING SERIES: There are no competing series in this family but the Blackridge, Borvant, Denmark, Pavant, Pober, Reebok, and Sierocliff series are in similar families or subgroups. Borvant, Pavant, Blackridge, Denmark, and Reebok soils have petrocalcic horizons at depths of 10 to 20 inches. Borvant, Sierocliff and Denmark soils have cabonatic mineralogy. Pober and Denmark soils have less than 35 percent rock fragments in the particle-size control section.
GEOGRAPHIC SETTING: These soils occur on alluvial fans at elevations of 5,200 to 6,400 feet. Slopes range from 4 to 15 percent. These soils formed in alluvium from quartzite, sandstone, latite, andesite, breccia, and other basic intermediate igneous rocks. Mean annual temperature ranges from 45 to 52 degrees F. The freeze-free period is 100 to 140 days. Average annual precipitation is 12 to 14 inches. GEOGRAPHICALLY ASSOCIATED SOILS: These are the Dagor, Donnardo, Mountainville, and Sumine soils and the competing Borvant, Povant and Reebok soils. Mountainville, Donnardo, Sumine, and Dagor soils lack petrocalcic horizons. Dagor soils have mollic epipedons that are more than 20 inches thick.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: Used mainly for rangeland and wildlife habitat. Vegetation is Wyoming big sagebrush, bluebunch wheatgrass, native bluegrass, globemallow, sego lily, pricklypear, and peavine.
DISTRIBUTION AND EXTENT: These soils are inextensive in Central Utah.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Fairfield-Nephi Area, Utah, 1980.
REMARKS:
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. The remainder of this document has not been updated.