LOCATION HOODLE UT+CO WY

Established Series
Rev. RLT/IGC/JCK
05/2015

HOODLE SERIES

The Hoodle series consists of very deep, well drained soils formed in alluvium, slope alluvium and colluvium from volcanic and mixed origins. These soils are on pediments and ridges. Slopes are 0 to 60 percent. Mean annual precipitation is about 560 mm, and mean annual air temperature is about 3.8 degrees C.

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

TYPICAL PEDON: Hoodle gravelly loam in rangeland. (Colors are for dry soil unless otherwise stated.)

A1--0 to 5 cm; grayish brown (10YR 5/2) gravelly loam, very dark grayish brown (10YR 3/2) moist; moderate very fine granular structure; soft, very friable, nonsticky and nonplastic; many fine and very fine roots; many very fine interstitial pores; 25 percent gravel; neutral (pH 6.7); gradual smooth boundary.

A2--5 to 23 cm; dark yellowish brown (10YR 4/4) gravelly loam, very dark grayish brown (10YR 3/2) moist; weak coarse subangular blocky structure parting to weak fine granular; soft, friable, slightly sticky and nonplastic; many fine and very fine roots; common fine interstitial pores; 20 percent gravel; slightly acid (pH 6.5); clear wavy boundary. (combined thickness of the A horizons is 8 to 36 cm thick)

Bt1--23 to 33 cm; brown (10YR 4/3) very gravelly sandy clay loam, dark brown (10YR 3/3) moist; moderate medium subangular blocky structure; slightly hard, firm, sticky and plastic; common very fine and few medium roots; few fine tubular pores; few thin clay bridges between sand grains and as coatings on peds; 25 percent gravel and 10 percent cobbles; slightly acid (pH 6.5); clear wavy boundary.

Bt2--33 to 48 cm; yellowish brown (10YR 5/4) very cobbly sandy clay loam, dark yellowish brown (10YR 4/4) moist; weak medium subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; common very fine and few medium roots; common fine tubular and coarse interstitial pores; few thin clay films on faces of peds and in pores; 5 percent gravel and 50 percent cobbles; neutral (pH 7.0); gradual wavy boundary.

Bt3--48 to 69 cm; yellowish brown (10YR 5/4) extremely cobbly sandy loam, dark yellowish brown (10YR 4/4) moist; weak medium subangular blocky structure; soft, friable, slightly sticky and nonplastic; few very fine and medium roots; common medium and coarse interstitial pores; few thin clay films in pores; 5 percent gravel and 60 percent cobbles; very slightly effervescent; slightly alkaline (pH 7.8); clear wavy boundary. (combined thickness of the Bt horizons is 31 to 68 cm thick)

Bk--69 to 152 cm; yellowish brown (10YR 5/4) extremely cobbly sandy loam, dark yellowish brown (10YR 4/4) moist; massive; soft, friable, nonsticky and nonplastic; few very fine roots; few medium and coarse interstitial pores; thin hard carbonate coats on bottom surfaces of rock fragments; common coarse distinct very pale brown (10YR 8/2) weakly cemented fragments of carbonate pan; 10 percent gravel and 65 percent cobbles; strongly and violently effervescent; moderately alkaline (pH 8.2).

TYPE LOCATION: Garfield, County, Utah; northeast of Woodchuck enclosure; NE 1/4 sec. 28, T. 31 S., R. 2 1/2 W.

RANGE IN CHARACTERISTICS:
Mean annual soil temperature - 3.3 to 7.5 degrees C
Mollic epipedon thickness - 20 to 38 cm
Thickness of argillic horizon - 31 to 68 cm
Depth to top of calcic horizon- 39 to 104 cm

A horizons
Hue: 10YR or 7.5YR
Value: 4 or 5 dry; 2 or 3 moist
Chroma: 2 or 3, dry or moist

Bt horizons
Hue: 7.5YR or 10YR
Value: 4, 5 or 6 dry; 3, 4 or 5 moist
Chroma: 2, 3 or 4, dry or moist
Texture: sandy clay loam, clay loam, and sandy loam
Rock fragments: 35 to 60 percent gravel and cobbles

Bk horizon
Hue: 7.5YR or 10YR
Value: 5, 6, 7 or 8 dry; 4, 5, 6 or 7 moist
Chroma: 2, 3, 4, 5 or 6, dry or moist
Texture: sandy loam and loam

COMPETING SERIES:
Anniesdraw (WY) - have a lithologic discontinuity
Bassel (CO) - have a paralithic contact at depths of 100 to 150 cm
Blaine (MT) - have a lithic contact at depths of 50 to 100 cm
Bowen (CO) - do not have a calcic horizon
Fingerrock (CO) - do not have a calcic horizon
Fornor (WY) - do not have a calcic horizon
Fourmile (CO) - do not have a calcic horizon
Geertsen (UT) - have a lithic contact at depths of 100 to 150 cm
Hungryhill (MT) - have a lithic contact at depths of 50 to 100 cm
Lagarita (CO) - do not have an argillic horizon thicker than 38 cm; do not have secondary carbonates starting below 50 cm
Lambe (CO) - do not have a calcic horizon above a depth of 150 cm; do not have a mollic epipedon less than 25 cm thick
Libeg (MT) - do not have a calcic horizon
Nathale (WY) - have a lithic contact at depths of 50 to 100 cm
Nathrop (CO) - have a lithic contact at depths of 50 to 100 cm
Norriston (CO) - do not have a calcic horizon
Quander (CO) - do not have a calcic horizon
Ratiopeak (MT) - do not have a calcic horizon
Silverheels (CO) - do not have a calcic horizon
Spanpeak (MT) - do not have a calcic horizon
Woodhall (CO) - have a lithic contact at depths of 50 to 100 cm

GEOGRAPHIC SETTING:
Landform - pediments and ridges
Elevation - 1,980 to 3,050
Slope - 0 to 60 percent
Parent material - alluvium, slope alluvium and colluvium
Mean annual precipitation - 380 to 635 mm
Mean annual air temperature - 2.2 to 6.6 degrees C
Frost-free period - 50 to 70 days

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Castino and Tatiyee soils. Castino soils have over 35 percent clay in the Bt horizons and are 50 to 100 cm deep to bedrock. Tatiyee soils have over 35 percent clay in the Bt horizons and lack a calcic horizon.

DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.

USE AND VEGETATION: Hoodle soils are used mainly for rangeland. Native vegetation is low sagebrush, green rabbitbrush, needleandthread, bluebunch wheatgrass, bluegrasses, and widely spaced Wyoming big sagebrush.

DISTRIBUTION AND EXTENT: Hoodle soils are moderately extensive in Utah, Colorado and Wyoming. MLRAs - 25, 34A, 43B, 46, 47, 48A.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana

SERIES ESTABLISHED: Garfield County (Paunsaugunt Survey Area), Utah, 1969.

REMARKS: Diagnostic horizons and features recognized in this pedon are:

Mollic epipedon - from 0 to 33 cm (A1, A2 and Bt1 horizons)
Argillic horizon - from 23 to 69 cm (Bt1, Bt2 and Bt3 horizons)
Calcic horizon - from 69 to 152 cm (Bk horizon)
Particle-size control section - from 23 to 73 cm (Bt1, Bt2 and part of the Bt3 horizon)

Hoodle soils have a cryic temperature regime and an ustic moisture regime.

National Cooperative Soil Survey
U.S.A.