LOCATION TIMBLIN                 NV

Inactive Series
Rev. DMC/ELS/JBF
03/2014

TIMBLIN SERIES

The Timblin series consists of moderately deep to strongly cemented duripan, well drained soils that formed in residuum and colluvium derived from basaltic, andesitic, and tuffaceous rock. Timblin soils are on plateaus and mountain tops. Slopes are 4 to 15 percent. The mean annual precipitation of 300 mm and the mean annual temperature is 4 degrees C.

TAXONOMIC CLASS: Fine, smectitic, frigid Haploxeralfic Argidurids

TYPICAL PEDON: Timblin extremely cobbly fine sandy loam - rangeland (Colors are for dry soil unless otherwise noted.)

A1--0 to 5 cm; grayish brown (10YR 5/2) extremely cobbly fine sandy loam, very dark grayish brown (10YR 3/2) moist; massive; soft, very friable, nonsticky and nonplastic; common very fine roots; few very fine tubular pores; 70 percent cobbles and gravel; neutral (pH 6.8); abrupt smooth boundary. (3 to 8 cm thick)

A2--5 to 10 cm; light gray (10YR 7/2) silt loam, dark grayish brown (10YR 4/2) moist; moderate thin platy structure; soft, very friable, slightly sticky and slightly plastic; few very fine and common fine roots; many very fine vesicular pores; 1 percent stones; neutral (pH 7.0); abrupt smooth boundary. (3 to 8 cm thick)

A&B--10 to 13 cm; pale brown (10YR 6/3) clay loam, brown (10YR 4/3) moist; many light gray (10YR 7/2) clean sand grains; moderate thin and very thin platy structure; slightly hard, very friable, sticky, plastic; few very fine and fine roots; common very fine tubular pores; 1 percent stones; few thin clay films on faces of peds; neutral (pH 7.2); abrupt wavy boundary. (O to 5 cm thick)

Bt--13 to 38 cm; brown (10YR 4/3) clay, brown (10YR 4/3) moist; moderate fine and medium columnar structure parting to fine and medium blocky structure when displaced; many clean sand grains coating the top of the columns; very hard, friable, very sticky, very plastic; few fine and very fine roots; common very fine and fine tubular pores; many cutans; 1 percent stones; slightly alkaline (pH 7.8); clear smooth boundary. (18 to 30 cm thick)

Btk1--38 to 48 cm; brown (10YR 5/3) clay loam, brown (10YR 4/3) moist; massive; hard, very friable, sticky, plastic; few very fine and fine roots; common very fine and fine tubular pores; few fine prominent white (10YR 8/1) violently effervescent soft lime masses; many very thin clay films bridging sand grains and few thin in pores; 1 percent stones; moderately alkaline (pH 8.2); gradual wavy boundary. (5 to 15 cm thick)

Btk2--48 to 91 cm; brown (10YR 5/3) clay loam, brown (10YR 4/3) moist; massive; slightly hard, very friable, sticky, plastic; few very fine and fine roots; common very fine and fine tubular pores; common medium and coarse prominent white (10YR 8/1) soft masses of lime; many thin and few moderately thick clay bridges; 1 percent stones; strongly effervescent; strongly alkaline (pH 8.6); clear wavy boundary. (25 to 46 cm thick)

Ck--91 to 99 cm; yellowish brown (10YR 5/4) loam, dark grayish brown (10YR 4/2) moist; massive; soft, very friable, nonsticky, slightly plastic; few very fine roots; few fine tubular pores; 1 percent stones; violently effervescent; moderately alkaline (pH 8.2); abrupt smooth boundary (O to 13 cm thick)

Cqkm--99 to 104 cm; very pale brown (10YR 8/2) strongly cemented duripan, very pale brown (10YR 7/3) moist with light yellowish brown (10YR 6/4) silica coating; extremely hard, extremely firm; violently effervescent; strongly alkaline (pH 8.8).

TYPE LOCATION: Nye County, Nevada; about 18 miles north of Tonopah, Nevada; about 0.35 mile south and 0.15 mile east of the NW corner of sec. 6 T.5N. R.43E.; latitude 39 degrees 19 minutes 19 seconds N and longitude 117 degrees 12 minutes 8 seconds W; NAD 83

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist in some part for short periods during winter and early spring months and for 10 to 20 days cumulative between July and October due to convection storms; aridic soil moisture regime bordering on xeric.
Mean annual soil temperature: 6 to 8 degrees C.
Depth to strongly cemented duripan: 56 to 100 cm.

Particle size control section - Clay content: 35 to 45 percent.

A1 horizon
Value: 5 or 6 dry, 3 or 4 moist.
Chroma: 2 or 3.
Stucture:Massive or has weak and moderate very thin or thin platy structure.
Reaction: Neutral or slightly alkaline.

A2 horizon.
Value: 6 or 7 dry, 4 or 5 moist.
Chroma: 2 or 3.
Reaction: Neutral or slightly alkaline.

Bt horizon
Hue of 7.5YR or 10YR.
Value of 4 through 6 dry, 3 through 5 moist.
Chroma of 2 or 3.
Texture: Clay or clay loam.
Structure: Moderate medium or fine columnar or prismatic angular blocky when displaced.
Reaction: Slightly alkaline or moderately alkaline.

Btk horizons
Hue of 7.5YR or 10YR.
Value of 4 through 6 dry, 3 through 5 moist.
Chroma of 2 or 3.
Texture: Clay or clay loam.
Structure: Moderate medium or fine columnar or prismatic angular blocky when displaced.
Reaction: Moderately alkaline or strongly alkaline.
Other features: Few through many fine or medium lime segregations.

Cqkm
Value: 6 through 8.
Chroma: 2 through 4.

COMPETING SERIES: This is the Coils series. Coils soils are not moist for 10 to 20 days cumulative between July and October due to convection storms.

GEOGRAPHIC SETTING: Timblin soils are on plateaus and mountain tops at elevations of 2,140 to 2,600 meters. Slopes are 4 to 15 percent. The soils formed in residuum from basaltic, andesitic, and tuffaceous rock. The climate is cool continental with a mean annual precipitation of 250 to 360 mm. The mean annual temperature is 4 to 7 degrees C. The frost-free season is 80 to 100 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Basket, McCann, and Old Camp soils. Basket soils have loamy-skeletal argillic horizons. McCann soils have loamy-skeletal particle-size control sections. Old Camp soils are shallow over bedrock.

DRAINAGE AND SATURATED HYDRAULIC CONDUCTIVITY: Well-drained; medium runoff; moderately low saturated hydraulic conductivity.

USE AND VEGETATION: Livestock grazing and wildlife habitat. The vegetation is principally black sagebrush, galleta, needlegrass, and juniper trees with Indian ricegrass, squirreltail, and Sandberg bluegrass.

DISTRIBUTION AND EXTENT: South-central Nevada. These soils are of small extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Davis, California

SERIES ESTABLISHED: Nye County (Big Smoky Valley Area), Nevada, 1972.

REMARKS: Timblin soils were classified as Brown soils.

Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the soil surface to 13 cm (A1, A2 and A&B horizons).
Argillic horizon - The zone from 13 to 48 cm (Bt and Btk horizons).
Indurated Duripan - The zone from 99 to 104 cm (Cqkm horizon).
Particle-size control section - The zone from 13 to 99 cm ((Bt, Btk, Btk and Ck horizons).

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National Cooperative Soil Survey
U.S.A.