LOCATION TROVE                   UT

Established Series
Rev. AJE/RJL/SJJ
07/2014

TROVE SERIES

The Trove series consists of moderately deep, well drained soils that formed in colluvium, slope alluvium and residuum derived from basic and intermediate igneous rocks. Trove soils are on mountain slopes and have slopes of 15 to 40 percent. The mean annual precipitation is about 16 inches (41 cm) and the mean annual air temperature is about 41 degrees F (5.0 degrees C).

TAXONOMIC CLASS: Fine-loamy over sandy or sandy-skeletal, mixed, superactive, frigid Calcic Argixerolls

TYPICAL PEDON: Trove loam, rangeland. (Colors are for air dry soil unless otherwise noted.)

A1--O to 3 inches (0 to 8 cm); dark grayish brown (10YR 4/2) loam, very dark brown (10YR 2/2) moist; weak fine granular structure; soft, friable, slightly sticky and slightly plastic; many fine roots; few fine tubular pores; 10 percent gravel; noneffervescent; neutral (pH 7.0); clear smooth boundary. (3 to 6 inches (8 to 15 cm) thick)

Bt1--3 to 8 inches (8 to 20 cm); brown (10YR 4/3) clay loam, very dark brown (10YR 2/2) moist; weak medium subangular blocky structure; slightly hard, firm, moderately sticky and moderately plastic; many fine and few medium roots; few fine tubular pores; continuous distinct clay films; 15 percent gravel; noneffervescent; neutral (pH 7.0); clear wavy boundary. (5 to 7 inches (13 to 18 cm) thick)

Bt2--8 to 14 inches (20 to 36 cm); brown (10YR 4/3) gravelly clay loam, dark brown (10YR 3/3) moist; moderate medium angular blocky structure; slightly hard, firm, moderately sticky and moderately plastic; few fine roots; few fine tubular pores; continuous distinct clay films; 30 percent gravel; noneffervescent; neutral (pH 7.0); clear wavy boundary. (5 to 14 inches (13 to 36 cm) thick)

Bt3--14 to 19 inches (36 to 48 cm); brown (7.5YR 5/3) very gravelly loam, brown (7.5YR 4/4) moist; weak medium angular blocky structure; soft, friable, slightly sticky and slightly plastic; few fine roots; few fine tubular pores; very few faint clay films on all faces of peds; 35 percent gravel; noneffervescent; neutral (pH 7.0); clear wavy boundary. (0 to 5 inches (0 to 12 cm) thick)

2Bk--19 to 33 inches (49 to 84 cm); pinkish gray (7.5YR 6/2) gravelly sand, brown (7.5YR 4/4) moist; single grain; loose, nonsticky and nonplastic; extremely coarse dendritic moderately cemented carbonate nodules; 40 percent gravel; strongly effervescent; moderately alkaline (pH 8.4); abrupt wavy boundary. (5 to 14 inches (13 to 36 cm) thick)

R--33 to 37 inches (84 to 94 cm); igneous bedrock.

TYPE LOCATION: Sevier County, Utah; about three miles northwest of Koosharem Reservoir on Mormon Mountain; about 600 feet south and 600 feet west of the northeast corner of section 14, T.25S., R.lW., SLBM; USGS Boobe Hole Reservoir quadrangle; 38 degrees 38 minutes 28 seconds north latitude and 111 degrees 52 minutes 11 seconds west longitude; NAD 83.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually moist during late fall to late spring, continuously dry in all parts for at least 45 days during the summer and early fall, but intermittently moist due to convection storms. (Xeric soil moisture regime.)
Mean annual soil temperature: 40 to 46 degrees F. (4.5 to 8.0 degrees C.)
Mean summer soil temperature: 62 to 63 degrees F. (16.7 to 17.2 degrees C.)
Thickness of mollic epipedon: 10 to 14 inches (25 to 36 cm)
Thickness of argillic horizon: 11 to 24 inches (28 to 61 cm)
Depth to lithologic discontinuity: 14 to 32 inches (36 to 81 cm)
Depth to bedrock: 20 to 40 inches (51 to 102 cm)

Particle-size control section (weighted average):
Clay content: 25 to 35 percent in the upper part; 0 to 10 percent in the lower part.
Rock fragments: 10 to 35 percent in the upper part; 35 to 50 percent in the lower part, mainly gravel.

A horizon:
Value: 4 or 5 dry, 2 or 3 moist
Chroma: 2 or 3 moist or dry

Bt horizon:
Hue: 10YR or 7.5YR
Value: 4 to 6 dry, 2 to 4 moist
Chroma: 2 to 4 moist or dry
Texture: clay loam, loam, gravelly clay loam or gravelly loam
Clay content: 25 to 35 percent
Rock fragments: 10 to 35 percent
Reaction: neutral or slightly alkaline.

2Bk horizon:
Hue: 7.5YR or 10YR
Value: 6 or 7 dry, 4 or 5 moist
Chroma: 2 to 4 moist or dry
Texture: very gravelly sand or very gravelly loamy sand
Clay content: 0 to 10 percent
Rock fragments: 35 to 50 percent gravel
Reaction: slightly or moderately alkaline
Calcium carbonate equivalent: 3 to 15 percent

COMPETING SERIES: This is the Driggs (ID) series. Driggs soils do not have a lithic contact within 60 inches (152 cm).

GEOGRAPHIC SETTING: The Trove soils are at elevations of 7,300 to 8,650 feet (2,230 to 2,633 meters). Slopes are 15 to 40 percent. These soils occur on mountain slopes and formed in colluvium and/or slope alluvium over residuum derived from basic and intermediate igneous rocks. The climate is dry to moist subhumid, the average annual precipitation is 16 to 22 inches (406 to 559 mm). The mean annual air temperature is 38 to 44 degrees F. (3.3 to 6.7 degrees C.), and the frost free period is 70 to 100 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Henefer, Krueger, Vicking and Watkins Ridge soils. Henefer, Krueger, Vicking and Watkins Ridge soils are deep and lack contrasting sandy or sandy-skeletal horizons within 40 inches (102 cm) of the surface. Also, Henefer and Krueger soils have mollic epipedons more than 20 inches (51 cm) thick, Henefer soils have more than 35 percent clay in the argillic horizon, and Watkins Ridge soils lack an argillic horizon.

DRAINAGE AND PERMEABILITY: Well drained; medium to high runoff; moderately slow permeability; moderately high saturated hydraulic conductivity.

USE AND VEGETATION: These soils are used for rangeland. The native vegetation is big sagebrush, antelope bitterbrush, snowberry, serviceberry, squirreltail and spiked wheatgrass.

DISTRIBUTION AND EXTENT: Central Utah, eastern Sevier County, Mormon Peak area. MLRA 47. The series is inextensive.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES ESTABLISHED: Sevier County Area, Utah, UT628, 2009.

REMARKS: Diagnostic horizons and features recognized in this pedon are:

Mollic epipedon - the zone from 0 to 14 inches (0 to 36 cm) (A, Bt1, Bt2 horizons).

Argillic horizon - the zone from 3 to 19 inches (8 to 48 cm) (Bt1, Bt2, Bt3 horizons).

Calcic horizon - the zone from 19 to 33 inches (48 to 84 cm) (2Bk horizon).

Particle-size control section - the zone from 3 to 33 inches (8 to 84 cm) (Bt1, Bt2, Bt3 and 2Bk horizons).

Taxonomic Version: Eleventh Edition, 2010.

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National Cooperative Soil Survey
U.S.A.