LOCATION FURIA COEstablished Series
TAXONOMIC CLASS: Fine, mixed, superactive, frigid Cumulic Endoaquolls
TYPICAL PEDON: Furia clay loam, on a northeast facing, linear, 1 percent slope in grass at an elevation of 7,460 feet. (Colors are for dry soil unless otherwise noted.) When described on April 12, 2001 the soil was moist from 0 to 72 inches.
A--0 to 4 inches; dark gray (10YR 4/1) clay loam, very dark brown (10YR 2/2) moist; moderate fine and medium granular structure; hard, friable, slightly sticky and slightly plastic; many fine and medium roots; slightly alkaline (pH 7.6); clear smooth boundary. (3 to 5 inches thick)
Ag--4 to 16 inches; dark gray (10YR 4/1) clay loam, black (10YR 2/1) moist; moderate fine and medium subangular blocky structure; very hard, firm, sticky and plastic; many fine and medium roots; common fine and medium distinct dark yellowish brown (10YR 4/4) yellowish red (5YR 4/6) concentrations; slightly alkaline (pH 7.4); abrupt smooth boundary. (8 to 15 inches thick)
Bg1--16 to 32 inches; very dark gray (10YR 3/1) silty clay loam, very dark gray (N 3/) moist; moderate medium subangular blocky structure; very hard, firm, sticky and plastic; common fine and medium roots; many fine distinct yellowish red (5YR 4/6) concentrations; neutral (pH 7.2); clear smooth boundary.
Bg2--32 to 43 inches; very dark gray (10YR 3/1) silty clay, black (N 2.5/) moist; moderate medium subangular blocky structure; extremely hard, very firm, very sticky and very plastic; common fine roots; common fine distinct strong brown (7.5YR 4/6) concentrations; very slightly effervescent; neutral (pH 7.2); gradual smooth boundary. (Combined thickness of the Bg horizons is 25 to 40 inches)
Cg--43 to 72 inches; very dark gray (10YR 3/1) silty clay loam, very dark gray (N 3/) moist; weak coarse subangular blocky structure; extremely hard, firm, sticky and plastic; common fine and medium roots; ; common fine distinct strong brown (7.5YR 4/6) concentrations; very slightly effervescent; neutral (pH 7.2).
TYPE LOCATION: Las Animas County, Colorado; about 6.5 miles north of Weston, Colorado; located about 1,200 feet west and 700 feet south of the northeast corner of sec. 25, T. 32 S., R. 67 W.; Weston USGS quad; lat. 37 degrees 14 minutes 5 seconds N. and long. 104 degrees 49 minutes 56 seconds W., NAD 1927
RANGE IN CHARACTERISTICS:
Soil moisture: The soil moisture control section is moist continuously, but is saturated in some part April through August; Aquic moisture regime.
Mean annual soil temperature: 40 to 45 degrees F
Mean summer soil temperature: 53 to 57 degrees F
Depth to secondary calcium carbonate: 40 to 60 inches or more
Depth to endosaturation: 6 to 18 inches from May to August
Depth to redoximorphic concentrations and depletions: 4 to 18 inches
Thickness of the mollic epipedon: 40 to 60 inches or more
Other features: some pedons have a thin organic horizon (Oi) at the surface
Particle-size control section (weighted average):
Clay content: 35 to 45 percent
Sand content: 10 to 25 percent, with less than 15 percent fine or coarse sand
Rock fragments: 0 to 5 percent
A horizons:
Hue: 7.5YR or 10YR
Value: 3 or 4 dry, 2 or 3 moist
Chroma: 1 or 2
Clay content: 27 to 40 percent
Rock fragments: 0 to 5 percent
Reaction: neutral or slightly alkaline
Bg horizons:
Hue: N, 7.5YR or 10YR
Value: 3 or 4 dry, 2 or 3 moist
Chroma: 0 or 1
Texture: silty clay loam, silty clay
Clay content: 35 to 50 percent
Rock fragments: 0 to 5 percent
Calcium carbonate equivalent: 0 to 2 percent
Reaction: slightly acid to slightly alkaline
Cg horizon:
Hue: N, 7.5YR or 10YR
Value: 3 or 4 dry, 2 or 3 moist
Chroma: 0 or 1
Texture: silty clay loam, clay loam
Clay content: 30 to 40 percent
Rock fragments: 0 to 5 percent
Calcium carbonate equivalent: 0 to 2 percent
Reaction: slightly acid to slightly alkaline
COMPETING SERIES: These are the Tarrah series.
Tarrah soils: have greater than 35 percent rock fragments in the 2C horizon
GEOGRAPHIC SETTING:
Parent material: alluvium derived from sandstone and shale
Landform: flood plains, drainageways
Slopes: 0 to 3 percent
Elevation: 6,500 to 8,000 feet
Mean annual temperature: 43 to 45 degrees F
Mean annual precipitation: 16 to 20 inches
Precipitation pattern: continental
Wettest period: May through August
Driest period: December through February
Frost-free period: 70 to 90 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Bandarito, Molinaro, and Trujillo series. The Bandarito soils have an argillic horizon and are on valley sides. The Molinaro soils average less than 35 percent clay and are on terraces. The Trujillo soils have a mollic epipedon less than 16 inches thick and are on fans.
DRAINAGE AND PERMEABILITY: poorly drained, low runoff, slow permeability, rarely or occasionally flooded for brief periods during the months of May through July.
USE AND VEGETATION: Hay and pasture, rangeland, wildlife habitat; the primary vegetation is tufted hairgrass, Baltic rush, Nebraska sedge, other sedges and rushes.
DISTRIBUTION AND EXTENT: foothills of southeastern Colorado; LRR E, MLRA 49; small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Las Animas County, Colorado, Las Animas Area soil survey area, Colorado, 2007. The name coined.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Particle-size control section: The zone from 10 to 40 inches. (part of the Ag, Bg1 and part of the Bg2 horizons)
Mollic epipedon: The zone from 0 to 72 inches. (A, Ag, Bg1, Bg2, and Bg3 horizons)
Redoximorphic concentrations and depletions: In the zone from 4 to 72 inches. (Ag, Bg1, Bg2, Bg3 horizons)
Endosaturation: The zone of saturation at 8 to 72 inches. (Ag, Bg1, Bg2, Bg3 horizons)
The assignment of the cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.
Taxonomic Version: Eighth Edition, 1998