LOCATION JUNIPERBUTE IDEstablished Series
TAXONOMIC CLASS: Mixed, frigid Typic Xeropsamments
TYPICAL PEDON: Juniperbute fine sand - on a southeast-facing slope of 7 percent under shrubs and grass at 5,500 feet in rangeland. (Colors are for dry soils unless otherwise noted. When described on August 14, 1980, the profile was moist below 4 inches).
A--0 to 4 inches; brown (10YR 4/3) fine sand, dark brown (10YR 3/3) moist; single grain; loose; many very fine roots; 0.72 percent organic carbon; neutral (pH 7.2); gradual smooth boundary. (4 to 20 inches thick)
C--4 to 60 inches; brown (10YR 4/3) fine sand, dark brown (10YR 3/3) moist; single grain; loose; common very fine roots; 0.3 percent organic carbon; mildly alkaline (pH 7.5).
TYPE LOCATION: Fremont County, Idaho; about 11 miles west and 5 miles north of St. Anthony; 530 feet west; 2,640 feet north of the southeast corner of sec. 18, T.8N., R.39E.
RANGE IN CHARACTERISTICS:
Average annual soil temperature - 40 to 44 degrees F
Organic carbon in the upper 10 inches - averages less
than 0.6 percent
Time when moisture control section is dry for 45 or more
consecutive days - July 1 to September 1
A horizon
Color value, dry - 4 or 5
value, moist - 2 or 3
chroma - 1 through 3, dry or moist
C horizon
Color value, dry - 4 through 6
value, moist - 3 or 4
chroma - 2 through 4, dry or moist
Rock fragments - 0 to 10 percent
Reaction - neutral to mildly alkaline
COMPETING SERIES: These are the Corbett, Lowercreek(T), Pablo (T), Sacheen, Shellrock and Sisters(T) series. Corbett soils have a paralithic contact between 20 and 40 inches. Lowercreek soils have an O horizon and lack mollic colors below the A horizon. Pablo soils lack mollic colors below the A horizon and have an O horizon. Sacheen soils have an O horizon, B horizons, and are moderately or slightly acid. Shellrock soils formed in granitic parent materials and have loamy coarse sand textures in the texture control section. Sisters soils have 20 to 60 percent volcanic ash and have 30 to 50 percent rock fragments in the lower part of the control section.
GEOGRAPHIC SETTING: Juniperbute soils are on nearly level to steep basalt plains and mountain sideslopes. Elevations are 5,250 to 6,100 feet. Slopes are 1 to 30 percent. The soils formed in stabilized eolian deposits from mixed sources. On steeper slopes there has been some influence from slope alluvium. Average annual precipitation is 12 to 16 inches and comes mostly during winter and spring months. Average annual temperature is 39 to 43 degrees F. The frost-free period is 75 to 95 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Blacknoll(T), Grassyridge(T), Malm, Siddoway(T), Snowshoe(T), and Wolverine soils. These soils are on stabilized dunes and basalt plains. The Blacknoll and Siddoway soils have A-B-C profiles, a mollic epipedon, and a calcic horizon. Grassyridge and Malm soils have calcic horizons. Snowshoe soils have A-B-C profiles and are effervescent in the lower horizons. Wolverine soils have lime in the profile and are usually dry except for 60 to 80 days in early spring.
DRAINAGE AND PERMEABILITY: Excessively drained; runoff is medium; permeability is very rapid.
USE AND VEGETATION: The soil is used primarily for rangeland, wildlife habitat and wintering grounds for antelope, deer, elk, moose, small mammals, and birds of prey. Native vegetation is mainly antelope bitterbrush, basin big sagebrush, and needleandthread.
DISTRIBUTION AND EXTENT: These soils are moderately extensive in southeastern Idaho.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Portland, Oregon
SERIES PROPOSED: Fremont County, Idaho, 1983.
REMARKS: Diagnostic horizons and features recognized in this soil are:
Ochric epipedon - the zone from 0 to 4 inches (A horizon).
Particle-size control section - the zone from 10 to 40 inches (part of the C horizon).