LOCATION EDLOE COEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Ustic Haplocryalfs
TYPICAL PEDON: Edloe very gravelly sandy loam, on a north facing, 45 percent slope in woodland at an elevation of 8700 feet. (Colors are for dry soil unless otherwise noted.) When described on June 8, 1983 the soil was moist.
Oe--0 to 2 inches; moderately decomposed plant material.
A--2 to 4 inches; very dark grayish brown (10YR 3/2) very gravelly sandy loam, black (10YR 2/1) moist; weak medium granular structure; very friable, soft, nonsticky, nonplastic; 3 percent stones and 5 percent cobbles and 40 percent gravel; neutral (pH 7.0); abrupt smooth boundary. (2 to 6 inches thick)
E1--4 to 10 inches; pale brown (10YR 6/3), very gravelly sandy loam, brown (10YR 4/3), moist; weak fine subangular blocky structure; very friable, soft, nonsticky, nonplastic; 5 percent cobbles and 40 percent gravel; slightly acid (pH 6.4); abrupt smooth boundary.
E2--10 to 20 inches; pale brown (10YR 6/3), very gravelly sandy loam, brown (10YR 5/3), moist; weak medium subangular blocky structure; very friable, slightly hard, slightly sticky, nonplastic; 5 percent cobbles and 40 percent gravel; slightly acid (pH 6.4); gradual wavy boundary. (combined thickness of the E horizons is 10 to 18 inches)
Bt--20 to 32 inches; light brown (7.5YR 6/4) extremely gravelly sandy clay loam, brown (7.5YR 4/4) moist; moderate medium subangular blocky structure; friable, hard, moderately sticky, slightly plastic; few faint clay films on all faces of peds; 10 percent cobbles and 50 percent gravel; slightly acid (pH 6.4); gradual wavy boundary. (12 to 25 inches thick)
R--32 to 60 inches; indurated gneiss bedrock.
TYPE LOCATION: Park County, Colorado; about 3 miles south of Guffey; located about 700 feet south and 2,100 feet east of the northwest corner of section 25, T 15 S, R 73 W; Thirtyone Mile Mountain USGS quadrangle; UTM 455495 meters E, 4286258 meters N, zone 13, NAD 83.
RANGE IN CHARACTERISTICS:
Soil moisture: The soil moisture control section is briefly dry in some part in late spring and early summer following snowmelt, moist in late July and August, and intermittently dry in fall; udic regime bordering on ustic.
Mean annual soil temperature: 37 to 42 degrees F.
Mean summer soil temperature: 43 to 46 degrees F.
Thickness of the ochric epipedon: 2 to 6 inches
Depth to argillic horizon: 6 to 20 inches
Depth to lithic contact: 20 to 40 inches
Base saturation: 70 to 100 percent (estimated)
Lithology of rock fragments: granite, gneiss, monzonite
Particle-size control section (weighted average):
Clay content: 20 to 35 percent
Rock fragment content: 35 to 80 percent
Mica content: 10 to 45 percent (estimated)
A horizon:
Hue: 10YR or 7.5YR
Value: 3 or 4 dry; 2 or 3 moist
Chroma: 2 or 3 dry; 1 through 3 moist
Clay content: 7 to 18 percent
Rock fragment content: 35 to 58 percent
Reaction: slightly acid or neutral (pH 6.1 to 7.3)
E horizons:
Hue: 10YR or 7.5YR
Value: 6 or 7 dry; 4 or 5 moist
Chroma: 2 through 4 dry; 2 through 4 moist
Clay content: 7 to 18 percent
Rock fragment content: 35 to 60 percent
Reaction: moderately acid to neutral (pH 5.6 to 7.3)
Bt horizon:
Hue: 10YR or 7.5YR
Value: 4 through 6 dry; 4 or 5 moist
Chroma: 4 through 6 dry; 4 moist
Texture: extremely gravelly sandy clay loam, extremely gravelly clay loam
Clay content: 20 to 35 percent
Rock fragment content: 35 to 80 percent
Reaction: moderately acid to neutral (pH 5.6 to 7.3)
COMPETING SERIES: These are the
Cadotte,
Cloud Peak,
Cundiyo,
Fulvance,
Goosepeak,
Guffey,
Hyattville,
Kimpton,
Lake Creek,
Lakehelen,
Laveta,
Lulude,
Reinecker, and
Tepecreek series.
Cadotte, Cundiyo, Fulvance, Goosepeak, Reinecker - do not have a lithic contact.
Cloud Peak, Hyattville, Kimpton- have accumulations of secondary calcium carbonate.
Guffey, Tepecreek - have a paralithic contact at 20 to 40 inches.
Lake Creek - have rock fragments that are mainly stones of sandstone and argillite.
Lakehelen - are not as dry in the moisture control section in early summer and are not as moist in mid and late summer.
Laveta - have rock fragments of sandstone.
Lulude - have rock fragments of volcanic origin and have E/B horizons.
GEOGRAPHIC SETTING:
Parent material: slope alluvium derived from granite, gneiss, monzonite
Landform: mountain slopes
Slopes: 20 to 55 percent
Elevation: 7,500 to 10,000 feet
Mean annual temperature: 35 to 40 degrees F.
Mean annual precipitation: 14 to 17 inches
Precipitation pattern: Monthly precipitation is lowest in winter and greatest in July and August.
Frost-free period: 50 to 80 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Merino and Bassel series. The Merino soils are shallow. The Bassel soils are deep and have mollic epipedon.
DRAINAGE AND PERMEABILITY: Well drained, moderately slow permeability.
USE AND VEGETATION: These soils are used for livestock grazing, recreation, and wildlife habitat. Native vegetation is mainly Rocky Mountain Douglas-fir, ponderosa pine, true mountain mahogany, Arizona fescue, Parry's oatgrass, mountain muhly, common juniper, and kinnikinnick.
DISTRIBUTION AND EXTENT: Central Colorado; LRR E, MLRA 48A; small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana
SERIES ESTABLISHED: Park County, Colorado, Teller-Park soil survey area, 2010. The name is taken from a small store in Teller County. The 02/2010 revision re-activates and re-describes the formerly inactive Edloe series. The original Edloe series was proposed in 1943 and established in 1959 with a type location on the Manitou Experimental Forest, Teller County. The classification was fine-loamy mixed Typic Cryoboralfs. This series was not recognized in a current soil survey, and was inactivated in 2009. A very similar soil was recognized in the Teller-Park soil survey, and the Edloe series name was reactivated and used for the series proposed in the Teller-Park Area.
REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Series control section: The zone from 0 to 32 inches.
Particle-size control section: The zone from 20 to 32 inches. (Bt horizon)
Ochric epipedon: from 2 to 6 inches. (A horizon)
Argillic horizon: from 20 to 32 inches. (Bt horizon)
Lithic contact: The contact with gneiss at 32 inches. (R layer)
Taxonomic Version: Classified according to Keys to soil Taxonomy, 11th Edition, 2009.