LOCATION STINES IDEstablished Series
TAXONOMIC CLASS: Ashy-skeletal, glassy, frigid Vitrandic Haploxerolls
TYPICAL PEDON: Stines very stony sandy loam. On a 65 percent smooth slope, northwest aspect, 5100 feet elevation. The profile was moist throughout when described. This profile was described April 23, 1980. (Colors are for air-dry soil unless otherwise stated.)
A1--0 to 2 inches; grayish brown (10YR 5/2) very stony sandy loam, very dark grayish brown (10YR 3/2) moist; weak fine and medium granular structure; soft, very friable; many very fine and common fine roots; many very fine irregular pores; 10 percent stones, 15 percent cobbles and 15 percent gravel; mildly alkaline (pH 7.4); clear smooth boundary. (2 to 5 inches thick)
A2--2 to 9 inches; brown (10YR 5/3) very gravelly sandy loam, dark brown (10YR 3/3) moist; weak fine and medium subangular blocky structure; soft, very friable; common very fine and few fine roots; common very fine irregular pores; 5 percent stones, 5 percent cobbles and 25 percent gravel; mildly alkaline (pH 7.4); clear wavy boundary. (4 to 10 inches thick)
Bw1--9 to 22 inches; brown (10YR 5/3) very cobbly sandy loam, very dark grayish brown (10YR 3/2) moist; weak fine and medium subangular blocky structure; slightly hard, very friable; common very fine and medium and few fine roots; common very fine irregular pores; 10 percent stones, 15 percent cobbles and 15 percent gravel; mildly alkaline (pH 7.5); clear wavy boundary. (9 to 15 inches thick)
Bw2--22 to 33 inches; pale brown (10YR 6/3) very cobbly sandy loam, dark grayish brown (10YR 4/2) moist; massive; slightly hard, very friable; common very fine and few fine roots; common very fine irregular pores; 10 percent stones, 20 percent cobbles and 15 percent gravel; mildly alkaline (pH 7/6); clear wavy boundary. (8 to 15 inches thick)
Bk--33 to 42 inches; light gray (2.5Y 7/2) very cobbly fine sandy loam, grayish brown (2.5Y 5/2) moist; massive; slightly hard, very friable, slightly sticky; few very fine roots; common very fine irregular pores; strongly effervescent; 15 percent stones, 20 percent cobbles, and 15 percent gravel; moderately alkaline (pH 8.1); gradual smooth boundary. (7 to 16 inches thick)
Cr--42 inches; light gray (N 7/0) weakly consolidated volcanic ash.
TYPE LOCATION: Cassia County, Idaho; about 1300 feet east, 500 feet south of the northwest corner of section 30, T. 15 S., R. 22 E.
RANGE IN CHARACTERISTICS:
Thickness of mollic - 15 to 30 inches
Average annual soil temperature - 42 to 47 degrees F.
Depth to paralithic contact - 40 to over 60 inches
Depth to secondary lime - 27 to 38 inches
Particle-size control section
Clay content - 5 to 15 percent
Rock fragments - 35 to 55 percent
A horizons
Value - 4 or 5 dry, 2 or 3 moist
Chroma - 2 or 3
Reaction - neutral to mildly alkaline
Bw horizons
Value - 4 through 6 dry, 3 to 5 moist
Chroma - 2 or 3
Texture - GRV-SL, GRV-L, CBV-SL, or CBX-SL
Rock fragments - 35 to 65 percent
Reaction - neutral to moderately alkaline
Bk horizons
Hue - 10YR or 2.5Y
Value - 6 or 7 dry, 4 through 6 moist
Chroma - 2 through 4
Texture - CBV-FSL, GRV-SL
Rock fragments - 35 to 70 percent
Reaction - mildly or moderately alkaline
C horizon (present in some pedons)
Rock fragment content - 65 to 80 percent
Reaction - mildly or moderately alkaline
Cr horizon
Color hue - 2.5Y or 5Y
Value - 4 through 5 moist
Chroma - 0 or 1
COMPETING SERIES: These are the Fulcrum and Lonigan series. Fulcrum soils are moderately deep to a lithic contact. Lonigan soils are moderately deep to a paralithic contact.
GEOGRAPHIC SETTING: Stines soils are on mesa sides and hillsides. Slopes range from 25 to 75 percent. Elevation ranges from 5,000 to 7,200 feet. The soil formed in alluvium and residuum of weakly consolidated volcanic ash. The average annual precipitation is about 12 to 18 inches, the average annual air temperature is about 39 to 45 degrees F, and the frost-free season is 60 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Chen, Coalbank, Cottonthomas, Hardister, and Tomsherry soils. Coalbank, Cottonthomas, Hardister, and Tomsherry soils have less than 35 percent rock fragments in the control section. Coalbank soils are the lower part of steep north slopes. Cottonthomas and Tomsherry are on terraces. Hardister soils are on valley bottoms. Chen soils have more than 35 percent clay in the control section and are shallow to bedrock. The are on mesa tops.
DRAINAGE AND PERMEABILITY: Well drained; moderately rapid permeability; medium to very rapid runoff.
USE AND VEGETATION: Stines soils are used for wildlife habitat. The native vegetation is mainly mountain big sagebrush, bluebunch wheatgrass, and Idaho fescue.
DISTRIBUTION AND EXTENT: The soils of this series are inextensive in south central Idaho.
MLRA OFFICE RESPONSIBLE: Reno, Nevada
SERIES ESTABLISHED: Cassia County, Idaho, 1986.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Mollic epipedon - the zone from the surface to 22 inches (A1, A2, and Bw1 horizons)
Cambic horizon - the zone from 22 to 33 inches (Bw2 horizon)
Calcic horizon - the zone from 33 to 42 inches (Bk horizon)
Vitrandic feature - the particle-size control section contains greater than 60 percent volcanic glass.