LOCATION JODE COTentative Series
TAXONOMIC CLASS: Fine-loamy, mixed, superactive, frigid Cumulic Haplustolls
TYPICAL PEDON: Jode loam, on a 2 percent slope, in a hay field, at an elevation of 8100 feet. (Colors are for dry soil unless otherwise noted.)
A1--0 to 7 inches; dark gray (10YR 4/1) loam, black (10YR 2/1) moist; weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; common very fine and fine roots; common very fine and fine pores; 5 percent gravel; slightly alkaline (pH 7.4); abrupt smooth boundary.
A2--7 to 17 inches; dark grayish brown (10YR 4/2) loam, black (10YR 2/1) moist; weak fine subangular blocky structure parting to weak very fine subangular blocky; soft, very friable, slightly sticky, slightly plastic; common very fine and fine roots; common very fine and fine pores; strongly effervescent; 5 percent gravel; moderately alkaline (pH 8.2); abrupt smooth boundary.
A3--17 to 26 inches; dark grayish brown (10YR 4/2) loam, black (10YR 2/1) moist; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; common very fine and fine roots; common very fine and fine pores; strongly effervescent; 5 percent gravel; moderately alkaline (pH 8.4); abrupt smooth boundary. (combined thickness of the A horizons: 20 to 30 inches thick)
Bk1--26 to 45 inches; gray (10YR 5/1) loam, very dark gray (10YR 3/1) moist; hard, weak course subangular blocky structure; hard, very friable, slightly sticky, slightly plastic; few very fine and fine roots; common very fine and fine pores; strongly effervescent; common fine calcium carbonate masses; 6 percent calcium carbonate equivalent; 5 percent rock fragments; moderately alkaline (pH 8.4); abrupt smooth boundary.
Bk2--45 to 60 inches; dark grayish brown (10YR 4/2) loam, black (10YR 2/1) moist; massive; hard, very friable, slightly sticky, slightly plastic; few very fine and fine roots; few very fine and fine pores; strongly effervescent; common fine calcium carbonate masses; 8 percent calcium carbonate equivalent; 10 percent gravel; moderately alkaline (pH 8.4). (combined thickness of the Bk horizons: 30 to 40 inches thick)
TYPE LOCATION: Teller County, Colorado; about 1100 feet south and 1200 feet east of the northwest corner of sec. 32, T. 15 S., R. 71 W.; High Park USGS quad; 4284320m N., 468180m E., Zone 13
RANGE IN CHARACTERISTICS:
Soil moisture: typic ustic moisture regime
Mean annual soil temperature: 44 to 46 degrees F
Mean summer soil temperature: 59 to 65 degrees F
Particle-size control section (weighted average):
Clay content: 18 to 27 percent
A horizons:
Hue: 10YR or 7.5YR
Value: 3 or 4, 2 or 3 moist
Chroma: 0 through 2
Rock fragments: 0 to 10 percent
Reaction: neutral to moderately alkaline
Bk horizons:
Hue: 10YR or 7.5YR
Value: 3 through 5, 2 or 3 moist
Chroma: 0 through 2
Rock fragments: 0 to 15 percent gravel
Calcium Carbonate Equivalent (lower part): 5 to 10 percent
Reaction: slightly alkaline or moderately alkaline
COMPETING SERIES:
Brycan soils: have argillic horizons
Cordeston,
Dalmatian,
Nutrioso, and
Staad soils: do not have secondary carbonate accumulations
Enbar and
Straw soils: have a lithologic discontinuity
Jodero,
Mcgaffey, and
Pinridge soils: are dry in some part of the moisture control section in July and August in normal years.
Polich soils: have redox concentrations
GEOGRAPHIC SETTING:
Parent material: alluvium
Landform: flood plain
Slopes: 0 to 6 percent
Elevation: 6600 to 8600 feet
Mean annual air temperature: 42 to 44 degrees F
Mean annual precipitation: 14 to 16 inches
Precipitation pattern: peak periods of precipitation occur during July and August
Frost-free period: 80 to 100 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Cathedral and High series. The Cathedral soils are on mountains. The High soils are in swales.
DRAINAGE AND PERMEABILITY: well drained, low runoff, moderate permeability
USE AND VEGETATION: These soils are used mainly for hayland and rangeland. Potential native vegetation is mainly western wheatgrass, needleandthread, Arizona fescue, blue grama, prairie junegrass, and Indian ricegrass.
DISTRIBUTION AND EXTENT: Central Colorado; LRR E, MLRA 48A; minor extent
MLRA OFFICE RESPONSIBLE: Lakewood, Colorado
SERIES PROPOSED: Teller County, Colorado, Teller-Park soil survey area, 2004.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: zone from 10 to 40 inches (part of the A2, the A3, and part of the Bk1 horizon)
Mollic epipedon: zone from 0 to 60 inches (entire profile)
Secondary calcium carbonate accumulation: zone from 26 to 60 inches (Bk1 and Bk2 horizons)
Taxonomic Version: Ninth edition Keys to Soil Taxonomy, 2003