LOCATION CADERO IDEstablished Series
TAXONOMIC CLASS: Ashy, glassy Vitrandic Haplocryolls
TYPICAL PEDON: Cadero ashy fine sandy loam, rangeland; on a 35 percent north facing slope at 6,200 feet elevation. (Colors are for dry soil unless otherwise stated.)
A--0 to 5 inches; very dark grayish brown (10YR 3/2) ashy fine sandy loam, very dark brown (10YR 2/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; many very fine and fine and few medium and coarse roots; slightly acid (pH 6.5); clear smooth boundary. (3 to 5 inches thick)
Bw1--5 to 14 inches; very dark grayish brown (10YR 3/2) ashy fine sandy loam, very dark brown (10YR 2/2) moist; weak fine and medium subangular blocky structure; soft, very friable, nonsticky and nonplastic; many very fine and fine and few medium and coarse roots; neutral (pH 6.8); clear wavy boundary. (6 to 9 inches thick)
Bw2--14 to 25 inches; dark grayish brown (10YR 4/2) paragravelly ashy fine sandy loam, very dark grayish brown (10YR 3/2) moist; weak fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine and fine roots; 15 percent paragravel that have thin lime coats on bottoms of fragments in a noncalcareous matrix; neutral (pH 6.8); abrupt wavy boundary. (8 to 11 inches thick)
Cr--25 to 35 inches; light gray (2.5Y 7/1) weakly consolidated ash.
TYPE LOCATION: Bear Lake County, Idaho; about 2 miles northwest of Bennington, Idaho; about 2,600 feet east and 2,400 feet north of the southwest corner of section 1, T. 12 S., R. 43 E.; USGS Nounan Quad; (42 degrees 24 minutes 28.4 seconds north Latitude and 111 degrees 22 minutes 35.4 seconds west Longitude.)
RANGE IN CHARACTERISTICS:
Soil moisture control section usually moist, dry in all parts for 45 consecutive days or more in the four months following the summer solstice. Xeric moisture regime.
Thickness of mollic epipedon 14 to 25 inches
Depth to paralithic contact 20 to 40 inches
Average annual soil temperature 39 to 42 degrees F. Cryic soil temperature regime.
Average summer soil temperature 54 to 59 degrees F.
Particle-size control section
Clay content 8 to 12 percent
Pararock fragments 0 to 20 percent
A horizon
Value 3 or 4 dry, 2 or 3 moist
Chroma 2 or 3 dry, 2 moist
Clay content 8 to 12 percent
Pararock fragments 0 to 5 percent paragravel
Reaction neutral to slightly acid
Estimated volcanic glass content of 35 to 60 percent and acid-oxalate extractable aluminum plus one-half of the acid-oxalate extractable iron of 0.07 to 0.1.
Bw horizon
Value 3 or 4 dry, 2 or 3 moist
Chroma 2 or 3 dry, 2 moist
Texture ashy fine sandy loam, paragravelly ashy fine sandy loam
Clay content 8 to 12 percent
Pararock fragments 0 to 20 percent paragravel
Reaction neutral to slightly acid
Estimated volcanic glass content of 35 to 60 percent and acid-oxalate extractable aluminum plus one-half of the acid-oxalate extractable iron of 0.07 to 0.1.
COMPETING SERIES: This is the Brownsbowl (T) series. Brownsbowl soils are very deep.
GEOGRAPHIC SETTING:
Landform: summits, shoulders and upper backslopes of hills in the Salt Lake Formation, with north-facing aspects.
Elevation: 6,000 to 7,700 feet
Slope: 8 to 35 percent
Parent Material: residuum from weakly consolidated ash
Climate: long, cool winters; dry, warm summers
Average annual precipitation: 14 to 20 inches
Average annual temperature: 37 to 42 degrees
Frost-free season: 50 to 70 days
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Hoopgobel (T), Burchert (T), and Brushtop (T) soils. Hoopgobel soils have an argillic horizon on backslopes and shoulders. Burchert soils are moderately deep to weakly consolidated ash and have a warmer soil temperature regime on backslopes and shoulders. Brushtop soils are deep to weakly consolidated ash on backslopes and footslopes.
DRAINAGE AND PERMEABILITY: Well drained; moderately rapid permeability.
USE AND VEGETATION: These soils are used mainly for wildlife habitat and rangeland. The dominant native vegetation is mountain big sagebrush, serviceberry, mountain snowberry, buckwheat, Idaho fescue, Sanberg bluegrass, prairie junegrass.
DISTRIBUTION AND EXTENT: Southeastern Idaho. The series is not extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Bear Lake County, Idaho, 2008. The name is coined.
REMARKS: Depths to diagnostic horizons and features start from the mineral soil surface. Diagnostic horizons and features recognized in his pedon are:
Mollic epipedon: the zone from 0 to 25 inches (A, Bw1, Bw2 horizons)
Paralithic contact: 25 inches (Cr horizons)
Vitrandic feature: Estimated volcanic glass content of 35 to 60 percent and acid-oxalate extractable aluminum plus one-half of the acid-oxalate extractable iron of 0.07 to 0.1.
Particle-size control section: the zone from 10 to 25 inches (Bw1 and Bw2 horizons)