LOCATION MARYJANE                NV

Established Series
Rev: LJL/ET/TM
11/2015

MARYJANE SERIES

The Maryjane series consists of very deep, well drained soils that formed in alluvium and/or colluvium from limestone and dolomite. Maryjane soils are on inset fans and lower back slopes of mountains. Slope ranges from 8 to 75 percent. The mean annual precipitation is about 17 inches and the mean annual air temperature is about 43 degrees F.

TAXONOMIC CLASS: Loamy-skeletal, carbonatic, frigid Pachic Calciustolls

TYPICAL PEDON: Maryjane extremely gravelly silt loam, forestland and wildlife habitat. (Colors are for dry soil unless otherwise noted.) The soil surface is covered by approximately 35 percent pebbles, 2 percent cobbles and 1 percent stones.

Oi--0 to 1 inch; very dark grayish brown (10YR 3/2) slightly decomposed plant material composed of needles and twigs, very dark brown (10YR 2/2) moist; weak thick platy structure; common very fine roots; common very fine and fine interstitial pores; slightly acid (pH 6.4); abrupt wavy boundary. (0.3 to 2 inches thick)

A--1 to 4 inches; very dark grayish brown (10YR 3/2) extremely gravelly silt loam, black (10YR 2/1) moist; weak medium subangular blocky structure; slightly hard, very friable, slightly sticky and slightly plastic; common very fine roots; common fine and medium interstitial pores; 70 percent pebbles and 2 percent cobbles; very slightly effervescent (11 percent calcium carbonate equivalent in the fine earth fraction); slightly alkaline (pH 7.6; abrupt smooth boundary. (2 to 4 inches thick)

ABk--4 to 13 inches; dark grayish brown (10YR 4/2) extremely gravelly loam, black (10YR 2/1) moist; moderate medium subangular blocky structure; moderately hard, very friable, slightly sticky and slightly plastic; common very fine through very coarse roots; many very fine and common fine and medium interstitial pores; 40 percent, prominent, white (10YR 8/1), calcium carbonate coats on bottom surfaces of rock fragments; 5 percent, prominent, brownish yellow (10YR 6/6), relic iron stains on rock fragments; 70 percent pebbles, 1 percent cobbles and 3 percent stones; strongly effervescent (85 percent calcium carbonate equivalent in the fine earth fraction); slightly alkaline (pH 7.8); clear wavy boundary. (5 to 10 inches thick)

Bk--13 to 35 inches; dark grayish brown (10YR 4/2) very gravelly loam, very dark grayish brown (10YR 3/2) moist; weak medium subangular blocky structure; slightly hard, very friable, slightly sticky and nonplastic; common very fine through very coarse roots; common very fine and fine interstitial pores; 60 percent, prominent, white (10YR 8/1), calcium carbonate coats on bottom surfaces of rock fragments; 50 percent pebbles, 2 percent cobbles and 5 percent stones; violently effervescent (95 percent calcium carbonate equivalent in the fine earth fraction); moderately alkaline (pH 8.0); clear wavy boundary.

Bkq--35 to 44 inches; light brownish gray (10YR 6/2) extremely gravelly coarse sandy loam, dark grayish brown (10YR 4/2) moist; massive, soft, very friable, slightly sticky and nonplastic; common very fine through very coarse roots; common very fine through very coarse interstitial pores; 40 percent, prominent, white (10YR 8/1), carbonate coats on bottom surfaces of rock fragments; 30 percent, fine, prominent, white (10YR 8/1), calcium carbonate pendants on bottom of rock fragments, slightly hard, sharp; 10 percent, fine, distinct, yellow (10YR 7/6), opal on bottom of rock fragments, hard, sharp; 85 percent pebbles; violently effervescent (100 percent calcium carbonate equivalent in the fine earth fraction); moderately alkaline (pH 8.1); clear wavy boundary.

Bk--44 to 60 inches; light brownish gray (10YR 6/2) extremely gravelly coarse sandy loam, dark grayish brown (10YR 4/2) moist; massive; soft, very friable, slightly sticky and nonplastic; few very fine roots; many very fine tubular pores; 40 percent, prominent, white (10YR 8/1), calcium carbonate coats on bottom surfaces of rock fragments; 30 percent, fine, prominent, white (10YR 8/1), calcium carbonate pendants on bottom of rock fragments, slightly hard, sharp; 70 percent pebbles; violently effervescent (95 percent calcium carbonate equivalent in the fine earth fraction); moderately alkaline (pH 8.2). (Combined thickness of the B horizons is 40 to 60 inches).

TYPE LOCATION: Clark County, Nevada; about 5.6 miles north and 14.5 miles west of Pahrump, Nevada; approximately 1.4 miles west and 1.2 mile north of Charleston Peak located in Wallace Canyon; 320 area feet south and 1250 feet east of the northwest corner of section 20, T. 19 S., R. 56 E.; USGS Charleston Peak, NV 7.5 minute topographic quadrangle; 36 degrees, 17 minutes, 22.4 seconds north latitude and 115 degrees, 43 minutes, 19.2 seconds west longitude; UTM 11S, 0604764e 4016822n; NAD83.

RANGE IN CHARACTERISTICS:

Soil moisture - usually moist in late winter and spring, and periodically moist in the upper part following summer convection storms; ustic soil moisture regime bordering on aridic.

Soil temperature: 43 to 47 degrees F.

Depth to base of mollic epipedon: 30 to 72 inches.

Depth to calcic horizon: 4 to 20 inches.

Control section - Rock fragments: Averages 50 to 80 percent, mainly gravel.
Clay content: Averages 6 to 18 percent, 3 to 9 percent is calcium carbonate clay.

Oi horizon - Organic matter: 50 to 70 percent.
Bulk density: 0.3 to 0.5

A horizon - Value: 3 or 4 dry.
Structure: Fine or medium.
Consistence: Soft or slightly hard.
Rock fragments: 60 to 80 percent, mainly gravel.
Organic matter: 5.0 to 10.0 percent.
Calcium carbonate equivalent of the fine earth fraction: 5 to 20 percent.

ABk horizon - Value: 3 or 4 dry.
Texture: Loam or silt loam.
Structure: Fine or medium.
Consistence: Soft or slightly hard.
Rock fragments: 60 to 80 percent, mainly gravel.
Organic matter: 0.5 to 3.0 percent.
Reaction: Slightly alkaline or moderately alkaline.
Calcium carbonate equivalent of the fine earth fraction: 60 to 100 percent.

Bk, Bkq or Bk horizons - Value: 4 through 6 dry.
Consistence: Nonsticky or slightly sticky and nonplastic or slightly plastic.
Rock fragments: 50 to 90 percent
Texture: coarse sandy loam, sandy loam or loam.
Organic matter: 0.5 to 1.0 percent.
Calcium carbonate equivalent of the fine earth fraction: 60 to 100 percent.

COMPETING SERIES: This is the Kitgram (NV) series. Kitgram soils have a lithic contact at 20 to 40 inches.

GEOGRAPHIC SETTING: Maryjane soils are on inset fans and lower back slopes of mountains. Slope ranges from 8 to 75 percent. These soils formed in alluvium and/or colluvium from limestone and dolomite. Elevations are 6,500 to 9,100 feet. The climate is sub-humid continental, cool, with moist winters and common summer convection storms. The mean annual precipitation is 16 to 20 inches; mean annual air temperature is 41 to 45 degrees F., and the frost-free season is 50 to 90 days.

GEOGRAPHICALLY ASSOCIATED SOILS: These are Kitgram, Mountmummy, Robbersfire and Thesisters soils. Mountmummy and Kitgram soils are moderately deep to bedrock on upper back slopes of mountains. Robbersfire soils do not have a mollic epipedon. on north facing back slopes of mountains Thesisters soils are very shallow or shallow to bedrock on upper back slopes of mountains.

DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.

USE AND VEGETATION: These soils are used for forest and wildlife habitat. The present vegetation is mainly ponderosa pine with some curlleaf mountainmahogany and currant.

DISTRIBUTION AND EXTENT: Mojave Desert of southern Nevada; MLRA 30. These soils are of moderate extent.

MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: PHOENIX, ARIZONA

SERIES ESTABLISHED: Clark County Area, Nevada, 2006. Proposed in Clark County, Nevada; Clark County Soil Survey, 2004. The name is coined from Mary Jane Falls located in Kyle Canyon in the Spring Mountains.

REMARKS: Diagnostic horizons and features recognized in the profile are:
Mollic epipedon --1 to 60 inches (A, ABk, Bk, Bkq and Bk horizons).
Calcic horizon - 4 to 60 inches (ABk, Bk, Bkq and Bk horizons).
Particle-size control section - 11 to 41 inches (Part of the ABk, Bk and part of the Bkq horizons).

ADDITIONAL DATA: Sampled on October 7, 2004, by NRCS Nevada staff, samples sent to NSSL, Lincoln, NE. Pedon ID is S04NV-003-010.

Responsibility for this series was transferred from Davis to Phoenix 11/2015. The last revision to the series was 8/2006. ET

---

National Cooperative Soil Survey
U.S.A.