LOCATION LOGRING                 NV

Established Series
Rev. JHD/JBF/WED
06/2016

LOGRING SERIES

The Logring series consists of shallow and very shallow, well drained soils that formed in residuum and colluvium derived from limestone, dolomite and other highly calcareous sedimentary rocks. Logring soils are on mountains and hills. Slopes are 8 to 75 percent. Mean annual precipitation is about 300 mm and mean annual temperature is about 8 degrees C.

TAXONOMIC CLASS: Loamy-skeletal, carbonatic, mesic Lithic Xeric Torriorthents

TYPICAL PEDON: Logring very gravelly loam--forestland. (Colors are for dry soil unless otherwise noted.)

A--0 to 5 cm; brown (10YR 5/3) very gravelly loam, dark brown (10YR 3/3) moist; moderate fine subangular blocky structure; soft, very friable, nonsticky and slightly plastic; many very fine and fine roots; many very fine and fine interstitial pores; 45 percent gravel and 5 percent cobbles; violently effervescent; moderately alkaline (pH 8.4); clear smooth boundary. (3 to 8 cm thick)

Bk1--5 to 18 cm; pale brown (10YR 6/3) very gravelly loam, dark brown (10YR 3/3) moist; moderate fine subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; many very fine, fine and medium, few coarse roots; common very fine and fine interstitial and tubular pores; 35 percent gravel and 10 percent cobbles; common (3 percent) distinct secondary calcium carbonate pendants on rock fragments; violently effervescent; moderately alkaline (pH 8.4); clear wavy boundary. (0 to 15 cm thick)

Bk2--18 to 36 cm; pale brown (10YR 6/3) very cobbly loam, dark yellowish brown (10YR 4/4) moist; weak medium subangular blocky structure; soft, very friable, slightly sticky and slightly plastic; many very fine, fine and medium coarse roots; many very fine and fine interstitial and tubular pores; 30 percent gravel and 25 percent cobbles; common (3 percent) prominent secondary calcium carbonate pendants on rock fragments; violently effervescent; moderately alkaline (pH 8.4); gradual irregular boundary. (8 to 30 cm thick)

R--36 cm; fractured limestone; secondary calcium carbonate filling fractures.

TYPE LOCATION: Esmeralda County, Nevada, about 1,000 feet south and 2,100 feet west of the northeast corner of Section 7, T. 6 S., R. 40 E; USGS Magruder Mountain 7.5 minute topographic quadrangle; latitude 37 degrees 26 minutes 6.7 seconds N and longitude 117 degrees 34 minutes 57.3 seconds W; WGS84 Decimal Degrees 37.4361111 latitude, -117.5825000 longitude.

RANGE IN CHARACTERISTICS:
Soil moisture: Usually dry, moist in winter and spring months, dry summer and fall except for 10 to 20 days cumulative between July and October due to convection storms; aridic moisture regime bordering on xeric.
Mean annual soil temperature: 8 to 10 degrees C.
Reaction: Slightly alkaline through strongly alkaline.
Effervescence: Strongly effervescent or violently effervescent throughout.
Calcium carbonate: 40 to 60 percent calcium carbonate equivalent in the less than 20 mm fraction and 15 to 40 percent in the less than 2 mm fraction, Accumulation of secondary carbonates is less than 5 percent in horizons more than 10 cm thick.
Organic carbon: 1.0 to 1.5 percent in upper 18 cm.
Depth to bedrock: 18 to 36 cm.

Particle-size control section - Clay content: 8 to 18 percent.
Rock fragments: 35 to 60 percent, mainly cobbles and gravel.

A horizon
Value: 4 or 5 dry, 2 or 3 moist.
Chroma: 2 through 4, dry or moist.

Bw horizon (when present)
Value: 5 or 6 dry, 3 through 5 moist.
Chroma: 2 through 4, dry or moist.
Texture of the fine earth: Loam, fine sandy loam, or sandy loam.

Bk horizons
Value: 5 or 6 dry, 3 through 5 moist.
Chroma: 2 through 4, dry or moist.
Texture: Loam, fine sandy loam, or sandy loam.
Structure: Weak or moderate, fine or medium subangular blocky.

COMPETING SERIES: These are the Eaglepass, Izod, Kram, Kyler, Tiki and Zimbob series.

Eaglepass soils have bedrock at a depth of 10 to 15 cm, have 60 to 75 percent rock fragments in the control section and do not have a Bk horizon. Izod soils contain 18 to 25 percent clay in the particle-size control section. Kram soils do not have Bk horizons and are usually dry June through October. Kyler soils do not have Bk horizons. Tiki soils have hue of 5YR or 2.5YR. Zimbob soils are not moist for 10 to 20 days in late summer and fall.

GEOGRAPHIC SETTING: Logring soils are on mountains and hills, typically on sideslope and summit positions. These soils formed in residuum and colluvium from limestone, dolomite and other highly calcareous rocks. Slopes are 8 to 75 percent. Elevations are 1,526 to 2,770 meters. The average annual precipitation is 250 to 360 mm, the average annual air temperature is 7 to 13 degrees C, and the frost-free season is about 80 to 130 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are the Penelas, Weepah and Ubehebe soils. Penelas and Ubehebe soils have an argillic horizon. Weepah soils are shallow to a paralithic contact.

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

USE AND VEGETATION: Woodland and wildlife habitat. The present vegetation singleleaf pinyon, Utah juniper, black sagebrush, Nevada ephedra, bottlebrush squirreltail and desert bitterbrush.

DISTRIBUTION AND EXTENT: Central Nevada. The soil is not extensive. MLRA 29 and 28A.

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

SERIES ESTABLISHED: Esmeralda County, Nevada, 1984.

REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from the surface to 18 cm (A and Bw horizon).
Lithic contact - The boundary at 36 cm (R layer)
Particle-size control section - The zone from the soil surface to 36 cm (A, Bw and Bk horizons).

ADDITIONAL DATA: Lab sample 83NV 009-5.

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National Cooperative Soil Survey
U.S.A.