LOCATION REINECKER               CO

Established Series
Rev. LLC/TWH
03/2023

REINECKER SERIES

The Reinecker series consists of very deep, well drained soils that formed in slope alluvium derived from sandstone and/or conglomerate. Reinecker soils are on mountain slopes or hills. Slopes range from 15 to 55 percent. Mean annual precipitation is about 16 inches and the mean annual air temperature is about 40 degrees F.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive Ustic Haplocryalfs

TYPICAL PEDON: Reinecker gravelly sandy loam, on a northeast facing, 15 percent slope in woodland at an elevation of 9350 feet. (Colors are for dry soil unless otherwise noted.) Described on August 3, 1983.

Oi--0 to 1 inches; slightly decomposed twigs and needles. (1 to 3 inches thick)

A--1 to 3 inches; brown (10YR 4/3) gravelly sandy loam, very dark brown (10YR 2/2) moist; weak fine granular structure; soft, very friable, nonsticky, nonplastic; many medium and coarse roots; many medium and coarse pores; 10 percent gravel, 5 percent cobbles; neutral (pH 6.6); abrupt smooth boundary. (2 to 4 inches thick)

E--3 to 7 inches; light brown (7.5YR 6/4) very gravelly sandy loam, brown (7.5YR 5/4) moist; weak fine subangular blocky structure; soft, very friable, nonsticky, nonplastic; few very fine and fine pores; 35 percent gravel, 5 percent cobbles; neutral (pH 7.0); abrupt smooth boundary. (4 to 6 inches thick)

Bt1--7 to 16 inches; yellowish brown (10YR 5/4) very gravelly sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; very hard, firm, moderately sticky, slightly plastic; many very fine and fine pores; many distinct clay films on faces of peds; 40 percent gravel, 10 percent cobbles; neutral (7.3); clear smooth boundary.

Bt2--16 to 21 inches; yellowish brown (10YR 5/6) very gravelly sandy loam, dark yellowish brown (10YR 4/6) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; many very fine and fine pores; few faint clay films on faces of peds; 40 percent gravel, 10 percent cobbles; neutral (pH 7.3); clear smooth boundary. (combined thickness of the Bt horizons is 14 to 18 inches)

Bw--21 to 27 inches; yellowish brown (10YR 5/6) very gravelly sandy loam, dark yellowish brown (10YR 4/6) moist; weak fine subangular blocky structure; slightly hard, very friable, nonsticky, nonplastic; many very fine and fine pores; 40 percent gravel, 10 percent cobbles; neutral (pH 7.3); clear smooth boundary. (0 to 8 inches thick)

Bk1--27 to 44 inches; light yellowish brown (10YR 6/4) very gravelly coarse sandy loam, dark yellowish brown (10YR 4/6) moist; massive; slightly hard, very friable, nonsticky, nonplastic; few very fine and fine roots; many very fine and fine pores; strongly effervescent; common fine calcium carbonate masses; 12 percent calcium carbonate equivalent; 45 percent gravel, 10 percent cobbles; moderately alkaline (pH 8.3); clear wavy boundary (15 to 25 inches thick).

Bk2--44 to 60 inches; brownish yellow (10YR 6/6) very gravelly sandy loam, yellowish brown (10YR 5/6) moist; massive; slightly hard, very friable, nonsticky, nonplastic; few very fine and fine roots; many very fine and fine pores; strongly effervescent; few fine calcium carbonate masses; 10 percent calcium carbonate equivalent; 30 percent gravel, 10 percent cobbles; moderately alkaline (pH 8.2). (10 to 20 inches thick)

TYPE LOCATION: Park County, Colorado; about 6 miles north of Hartsel, about 1500 feet north and 1500 feet east of the southwest corner of section 13, T. 11 S., R. 76 W.; Hartsel USGS quad; lat. 39 degrees 05 minutes 21 seconds and long. 105 degrees 50 minutes 30 seconds, NAD 83.

RANGE IN CHARACTERISTICS: (Depths given are measured from the mineral soil surface)
Soil moisture: The soil moisture control section is usually dry in some part in early summer, moist in some or all parts in late July and August, and intermittently dry in fall; ustic regime.
Mean annual soil temperature: 37 to 41 degrees F.
Mean summer soil temperature: 43 to 46 degrees F.
Thickness of ochric epipedon: 2 to 4 inches
Depth to argillic horizon: 7 to 10 inches
Thickness of argillic horizon: 14 to 18 inches
Depth to calcic horizon: 22 to 29 inches
Lithology of rock fragments: sandstone or conglomerate

Particle-size control section (weighted average):
Clay content: 18 to 27 percent
Rock fragment content: 35 to 60 percent

A horizon
Hue: 10YR, 7.5YR
Value: 3 or 4 dry; 2 or 3 moist
Chroma: 2 or 3 dry; 2 or 3 moist
Clay content: 7 to 18 percent
Rock fragment content: 15 to 35 percent; 10 to 25 percent gravel; 5 to 10 percent cobbles
Reaction: slightly acid or neutral (pH 6.1 to 7.3)

E horizon
Hue: 10YR, 7.5YR
Value: 4 to 6 dry; 4 to 6 moist
Chroma: 4 to 6 dry; 4 to 6 moist
Texture: very gravelly loam, very gravelly sandy loam
Clay content: 7 to 18 percent
Rock fragment content: 35 to 60 percent; 35 to 50 percent gravel; 0 to 10 percent cobbles
Reaction: slightly acid or neutral (pH 6.1 to 7.3)

Bt horizons
Hue: 10YR, 7.5YR
Value:4 to 6 dry; 4 to 6 moist
Chroma: 4 to 6 dry; 4 to 6 moist
Texture: very gravelly sandy clay loam, very gravelly sandy loam
Clay content: 18 to 27 percent
Rock fragment content: 35 to 60 percent; 35 to 50 percent gravel; 0 to 10 percent cobbles
Reaction: neutral or slightly alkaline (pH 6.6 to 7.8)

Bw horizon (a lower Bt horizon in some pedons)
Hue: 10YR, 7.5YR
Value: 4 to 6 dry; 4 to 6 moist
Chroma: 4 to 6 dry; 4 to 6 moist
Texture: very gravelly loam, very gravelly sandy loam
Clay content: 10 to 20 percent
Rock fragment content: 35 to 60 percent; 35 to 50 percent gravel; 0 to 10 percent cobbles
Reaction: neutral or slightly alkaline (pH 6.6 to 7.8)

Bk horizons
Hue: 10YR, 7.5YR
Value: 4 to 6 dry; 4 to 6 moist
Chroma: 4 to 6 dry; 4 to 6 moist
Texture: very gravelly coarse sandy loam, very gravelly sandy loam, very gravelly loam
Clay content: 10 to 18 percent
Carbonate clay content: 0 to 2 percent
Rock fragment content: 35 to 60 percent; 35 to 50 percent gravel; 0 to 10 percent cobbles
Calcium carbonate equivalent: 5 to 15 percent
Reaction: slightly alkaline or moderately alkaline (pH 7.4 to 8.4)

COMPETING SERIES: These are the Cadotte, Cloud Peak, Cundiyo, Edloe, Fulvance, Goosepeak, Guffey, Hyattville, Kimpton, Lake Creek, Lakehelen, Laveta, Lulude, and Tepecreek.
Cadotte soils have a lithologic discontinuity.
Cloud Peak, Edloe, Guffey, Hyattville, Kimpton, Lake Creek, Lakehelen, Laveta, Lulude, and Tepecreek soils have a lithic or paralithic contact at 20 to 40 inches.
Cundiyo, Fulvance, and Goosepeak soils do not have secondary carbonates.

GEOGRAPHIC SETTING:
Parent material: slope alluvium derived from sandstone and/or conglomerate
Landform: mountain slopes or hills
Slopes: 15 to 55 percent
Elevation: 7800 to 10,000 feet
Mean annual air temperature: 35 to 39 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 Hodden and Gebson series. The Gebson and Hodden soils have thicker, dark surface horizons. The Gebson soils are have fewer rock fragments.

DRAINAGE AND PERMEABILITY: Well drained, moderate permeability.

USE AND VEGETATION: These soils are used mainly for livestock grazing and wildlife habitat. Potential native vegetation is mainly ponderosa pine, Rocky Mountain Douglas fir, kinnikinnick, common juniper, prairie Junegrass, Arizona fescue, mountain muhly, and pine dropseed.

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 from a ridge.

REMARKS:
Diagnostic horizons and features recognized in this pedon are:
Series control section: The zone from 0 to 60 inches.
Particle-size control section: The zone from 7 to 21 inches. (Bt1, Bt2 horizons)
Ochric epipedon: from 1 to 3 inches. (A horizon)
Argillic horizon: 7 to 21 inches. (Bt1, Bt2 horizons)
Calcic horizon: 27 to 60 inches. (Bk1, Bk2 horizons)

Futher research is needed to confirm a cryic temperature regime.

Taxonomic Version: Eleventh edition Keys to Soil Taxonomy, 2010.

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National Cooperative Soil Survey
U.S.A.