LOCATION TULLOCK WY+MTEstablished Series
TAXONOMIC CLASS: Mixed, mesic Ustic Torripsamments
TYPICAL PEDON: Tullock loamy sand in rangeland
A--0 to 5 inches; brown (10YR 5/3) loamy sand, brown (10YR 4/3) moist; weak medium and fine granular structure; loose; slightly effervescent; carbonates disseminated throughout; slightly alkaline (pH 7.4); clear wavy boundary. (2 to 6 inches thick)
C1--5 to 20 inches; brown (10YR 5/3) loamy sand, brown (10YR 4/3) moist; massive; loose; strongly effervescent; carbonates disseminated throughout; slightly alkaline (pH 7.6); clear wavy boundary. (0 to 18 inches thick)
C2--20 to 31 inches; pale brown (10YR 6/3) loamy sand, brown (10YR 5/3) moist; massive; loose; strongly effervescent; carbonates disseminated throughout; slightly alkaline (pH 7.6); clear wavy boundary.
Cr--31 inches; soft calcareous sandstone.
TYPE LOCATION: Converse County, Wyoming; 1200 feet west and 1000 feet north of the southeast corner of section 29, T.35 N., R.73 W. Leuenberger Ranch Quadrangle, 42 degrees 50 minutes 16 seconds north latitude and 105 degrees 38 minutes 14 seconds west longitude.
RANGE IN CHARACTERISTICS: These soils typically effervesce throughout but some in some pedons the A horizon is leached. Depth to paralithic contact is 20 to 40 inches. The soil has 0 to 15 percent rock fragments. These soils are usually dry in the moisture control section for 60 consecutive days and 90 cumulative days between July 15 and October 25. The soil temperature at a depth of 20 inches is 41 degrees F. or warmer for 175 to 192 days. The mean annual soil temperature is 47 to 53 degrees F.
The A horizon has hue of 2.5Y or 10YR value of 5 or 6 and 3 to 5 moist, and chroma of 2 to 5. It is loamy sand, sand, loamy fine sand, fine sandy loam or fine sand. It is neutral to moderately alkaline.
Some pedons have an AC horizon. When present, it has hue or 2.5Y or 10YR, value of 5 or 6 and 4 or 5 moist, and chroma of 3 or 4. It is loamy sand, loamy fine sand, fine sand or sand.
The C horizon has hue of 2.5Y or 10YR, value of 5 to 7 and 4 to 6 moist, and chroma of 2 to 6. It is loamy sand, loamy fine sand, fine sand or sand. It is slightly alkaline or moderately alkaline.
The Cr horizon is soft calcareous sandstone which may be interbeded with conglomerate or shale in some areas.
COMPETING SERIES: These are the Callidito, Dwyer, Karval, Mido, Orpha, Pensom, Pinavetes, Valent and Wigton series. Callidito, Dwyer, Karval, Mido, Orpha, Pinavetes, Valent and Wigton series are very deep. Pensom soils are deep to a lithic contact.
GEOGRAPHIC SETTING: Tullock soils are on dunes and footslopes and toeslopes of hills and ridges. They formed in eolian deposits and residuum derived from sandstone. Slopes are 0 to 45 percent. Elevation is 3500 to 6,000 feet. Mean annual soil temperature is 47 to 53 degrees F. Mean annual precipitation is 10 to 14 inches. The frost-free period is 105 to 130 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Orpha soils and the Keeline, Taluce, Tassel, Terro and Vonalee soils. Keeline and Vonalee soils are very deep. Tassel and Taluce soils are shallow to soft sandstone. Terro soils have an argillic horizon.
DRAINAGE AND PERMEABILITY: Excessively drained. Rapid permeability. Runoff ranges from negligible to low depending on slope.
USE AND VEGETATION: These soils are used mostly for livestock grazing and wildlife habitat. The native vegetation is mainly prairie sandreed, sand bluestem, needleandthread, little bluestem and Indian ricegrass.
DISTRIBUTION AND EXTENT: Northeastern Wyoming. This series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Denver, Colorado
SERIES ESTABLISHED: Treasure County, Montana 1961
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - 0 to 5 inches (A)
Paralithic contact - 31 inches (Cr)
MLRR- G
SIR- WY1149, WY1164, WY9560, WY9698