LOCATION WOODTICK MT
Established Series
EMR/RJS
04/2012
WOODTICK SERIES
The Woodtick series consists of very deep, excessively drained soils that formed in eolian sands deposits. These soils occur on dunes. Slopes are 1 to 45 percent. Mean annual precipitation is about 390 millimeters. Mean annual air temperature is about 3 degrees C.
TAXONOMIC CLASS: Mixed Typic Cryopsamments
TYPICAL PEDON: Woodtick loamy fine sand, in rangeland on a 5 percent slope at 2,036 meters elevation (colors are for dry soil unless otherwise noted).
A -- 0 to 17 centimeters; brown (10YR 4/3) loamy fine sand, dark brown (10YR 3/3) moist; weak very fine granular structure; soft, very friable, nonsticky and nonplastic; common very fine roots; many very fine and fine irregular pores; neutral (pH 7.2); gradual smooth boundary. (9 to 28 cm thick)
BC -- 17 to 55 centimeters; dark yellowish brown (10YR 4/4) fine sand, dark yellowish brown (10YR 3/4) moist; single grain; loose, nonsticky and nonplastic; few very fine roots; many very fine and fine interstitial pores; neutral (pH 7.2); gradual smooth boundary. (16 to 68 cm thick)
C -- 55 to 159 centimeters; yellowish brown (10YR 5/4) fine sand, brown (10YR 4/3) moist; single grain; loose, nonsticky and nonplastic; many very fine and fine interstitial pores; slightly alkaline (pH 7.4).
TYPE LOCATION: Elk Springs topographic quadrangle, Beaverhead County, Montana; 10 meters north and 643 meters west of the SE corner of section 27, T. 13 S., R. 1 W. UTM: 443892.14E, 4945994.49N -- Datum NAD83, Zone 12
RANGE IN CHARACTERISTICS:
Mean annual soil temperature - 2 to 5 degrees C.
Moisture control section - 30 to 90 cm
A horizon
Value: 4 or 5 dry; 3 or 4 moist
Chroma: 3 or 4; dry or moist
Clay content: 1 to 4 percent
Reaction: pH 6.1 to 7.3
BC horizon
Value: 4 to 6 dry; 3 to 5 moist
Chroma: 3 or 4; dry or moist
Texture: fine sand or loamy fine sand
Clay content: 0 to 4 percent
Reaction: pH 6.1 to 7.3
C horizon
Hue: 10YR or 2.5Y; dry or moist
Value: 5 or 6 dry; 4 or 5 moist
Chroma: 2 to 4; dry or moist
Texture: fine sand or sand
Clay content: 0 to 2 percent
Rock fragments: 0 to 10 percent gravel
Calcium carbonate equivalent: 0 to 3 percent
Reaction: pH 6.4 to 7.6
COMPETING SERIES:
KUNAYOSH (AK) - have a udic moisture regime
LUKANIN (AK) - have an O horizon
MYSTEN (CO) - have 15 to 35 percent rock fragments within the control section
SKAGWAY (AK) - have a seasonally high water table within 150 cm
TEKLANIKA (AK) - have an O horizon
WITEFELS (NV,CA) - are moderately deep to paralithic contact
GEOGRAPHIC SETTING:
Landform - dunes
Elevation - 2,025 to 2,155 meters
Slope - 1 to 45 percent
Parent materials - eolian sands and alluvium
Climate - long, cold winters; moist springs; cool summers
Mean annual precipitation - 355 to 430 millimeters
Mean annual air temperature - 1 to 4 degrees C
Frost-free period - 50 to 70 days
GEOGRAPHICALLY ASSOCIATED SOILS: None listed.
DRAINAGE AND PERMEABILITY: Excessively drained; rapid permeability.
USE AND VEGETATION: These soils are typically native range and used for grazing cattle and for wildlife habitat. Vegetation is chiefly sagebrush and native grass such as needle-and-thread and Indian ricegrass, and brittle pricklypear cactus and pricklyphlox.
DISTRIBUTION AND EXTENT: The Woodtick series is of small extent in the intermountain valleys of southwestern Montana. MLRA - 44B.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Bozeman, Montana.
SERIES ESTABLISHED: Red Rock Lakes Area - Part of Beaverhead County, Montana, 2012; proposed in Beaverhead County, Montana, 2010.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - from the soil surface to 17 cm (A horizon); and a
Particle-size control section - from 25 to 100 cm (parts of the BC and C horizons).
Woodtick soils have a cryic temperature regime and an ustic moisture regime.
National Cooperative Soil Survey
U.S.A.