LOCATION PIBLER                  UT+NV

Established Series
Rev. AJE/RLM/MJD/JBF
02/2012

PIBLER SERIES

The Pibler series consists of shallow and very shallow over petrocalcic horizon, well drained soils that formed in alluvium derived mainly from sedimentary rocks. Pibler soils are on alluvial fans and fan remnants and have slopes of 2 to 15 percent. The mean annual precipitation is about 250 mm and the mean annual temperature is about 11 degrees C.

TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic, shallow Calcic Petrocalcids

TYPICAL PEDON: Pibler gravelly fine sandy loam--rangeland. (Colors are for air-dry soil unless otherwise noted.)

A1--0 to 10 cm; brown (10YR 5/3) gravelly fine sandy loam, dark brown (10YR 3/3) moist; moderate fine granular structure; soft, friable, slightly sticky and slightly plastic; few very fine and fine roots; few fine pores; 25 percent gravel; strongly effervescent; carbonates are disseminated; strongly alkaline (pH 8.5); clear smooth boundary. (5 to 13 cm thick)

A2--10 to 20 cm; pale brown (10YR 6/3) very gravelly loam, brown (10YR 4/3) moist; weak fine subangular blocky structure; slightly hard, friable, slightly sticky and slightly plastic; few fine and very fine roots; few fine pores; 35 percent gravel and 15 percent cobbles; Strongly effervescent; carbonates are disseminated; moderately alkaline (pH 8.0); clear smooth boundary. (0 to 15 cm thick)

Bk1--20 to 33 cm; pale brown (10YR 6/3) very cobbly loam, brown (10YR 4/3) moist; moderate medium subangular blocky structure; slightly hard, friable, slightly sticky and moderately plastic; few fine and very fine roots; few fine and very fine pores; 30 percent cobbles and 10 percent gravel; strongly effervescent; carbonates are on bottom of rock fragments; moderately alkaline (pH 8.1); clear smooth boundary. (8 to 13 cm thick)

Bk2--33 to 40 cm; very pale brown (10YR 7/3) very cobbly loam; yellowish brown (10YR 5/4) moist; massive; hard, friable, slightly sticky and moderately plastic; few very fine roots; 25 percent cobbles and 25 percent gravel; violently effervescent; carbonates in fine hardpan fragments; moderately alkaline (pH 8.0); abrupt smooth boundary. (5 to 10 cm thick)

Bkkm--40 to 55 cm; indurated carbonate cemented hardpan with troweled surface layer; subjacent layers are very pale brown (10YR 8/2) moist.

TYPE LOCATION: Juab County, Utah; 7 miles west and 2 miles north of Mills; 700 feet south and 50 feet west of northeast corner sec. 15, T. 15 S., R. 3 W.; USGS Champlin Peak 7.5 minute quadrangle; latitude 39 degrees 31 minutes 4 seconds N and longitude 112 degrees 9 minutes 56 seconds W; UTM Zone 12 399809e 4374886n, NAD 83.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry; moist in winter and spring and for brief periods in late summer due to convection storms; aridic bordering on xeric soil moisture regime.
Mean annual soil temperature: 9 to 14 degrees C.
Depth to the petrocalcic horizon: 18 to 50 cm.

Particle-size control section - Clay content: 10 to 25 percent.
Rock fragments: 35 to 60 percent .

A horizon
Value: 5 to 7 dry, 3 or 4 moist.
Chroma: 3 or 4, dry or moist.
Rock fragments: 20 to 50 percent; gravel and cobbles.
Reaction: Moderately alkaline through very strongly alkaline.
Structure: Granular, platy, or subangular blocky.

Bk horizon
Value: 6 to 8 dry, 4 to 6 moist.
Chroma: 2 to 4, dry or moist.
Texture: Fine sandy loam and loam.
Rock fragments: 35 to 60 percent; gravel and cobbles.
Calcium carbonate equivalent: 20 to 40 percent.
Reaction: Moderately alkaline through very strongly alkaline.
Consistence: Soft to hard.

Bkkm horizon
Value: 7 or 8 dry, 5 to 7 moist.
Chroma: 1 to 4, dry or moist.

COMPETING SERIES: These are the Childers, Curhollow, Havasupai, and Pinetown series.

Childers soils have a soil moisture regime that is aridic bordering ustic and have bedrock below petrocalcic horizon. Curhollow, Havasupai, and Pinetown soils have soil moisture regimes that are aridic bordering ustic and do not include very shallow depths to hardpan.

GEOGRAPHIC SETTING: Pibler soils are at elevations of 1,494 to 2,040 meters. They occur on alluvial fans, fan remnants and fan piedmont remnants. These soils formed in alluvium derived from quartzite, sandstone, limestone and some basic igneous rocks. Slopes are 2 to 15 percent. The climate is semiarid. Mean annual temperature ranges from 7 to 11 degrees C. Average annual precipitation ranges from 200 to 300 mm. Freeze-free period is 100 to 140 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Genola and Medburn soils. Genola and Medburn soils do not have petrocalcic horizons.

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

USE AND VEGETATION: These soils are used for livestock grazing. Potential vegetation is black sagebrush, yellowbrush, Mormon-tea, Indian ricegrass, Sandberg bluegrass, and bluebunch wheatgrass. These soils are correlated to Semidesert ecological sites in Utah.

DISTRIBUTION AND EXTENT: Central Utah. This series is inextensive. MLRA 28A.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona

SERIES ESTABLISHED: Fairfield-Nephi Area, Utah, 1980.

REMARKS: Diagnostic horizons and features in this pedon include:
Ochric epipedon: The zone from the soil surface to a depth of 18 cm. (A1 and part of the A2 horizons)
Calcic horizon: The zone from 20 to 40 cm. (Bk1, Bk2 horizons)
Petrocalcic horizon: Upper boundary occurs at 40 cm which is within the 100 cm required for a Petrocalcids. (Bkkm horizon)
Particle-size control section - The zone from 25 to 40 cm (Bk2 and part of the Bk1 horizons).

The classification was changed from Xerollic Paleorthids to Calcic Petrocalcids in 9/94.

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National Cooperative Soil Survey
U.S.A.