LOCATION SUZMAYNE UTEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, calcareous, mesic Aridic Ustorthents
TYPICAL PEDON: Suzmayne very channery loam, on a 20 percent slope on a ridge top at an elevation of 7,480 feet. (Colors are for dry soil unless otherwise noted.) The surface is covered by 15 percent gravel, 5 percent cobbles, 15 percent channers, 5 percent stones, and 5 percent flagstones.
A--0 to 7 inches; yellowish brown (10YR 5/4) very channery loam, dark yellowish brown (10YR 4/4) moist; weak medium granular structure; soft, friable, nonsticky and nonplastic; few very fine and fine roots; common very fine interstitial pores; 20 percent gravel, 5 percent cobbles, and 10 percent channers; strong effervescent; moderately alkaline (pH 8.4); clear smooth boundary. (4 to 8 inches thick)
C1--7 to 13 inches; reddish brown (5YR 5/4) gravelly loam, brown (7.5YR 4/4) moist; weak fine and medium subangular blocky structure; soft, friable, slightly sticky and nonplastic; common fine, and few very fine, medium roots; few very fine and fine tubular pores; 15 percent gravel, 5 percent cobbles, 5 percent stones; strong effervescent; moderately alkaline (pH 8.4); clear wavy boundary. (4 to 8 inches thick)
C2--13 to 27 inches; light reddish brown (2.5YR 6/4) very gravelly loam, reddish brown (2.5YR 5/3) moist; weak fine subangular blocky structure; slightly hard, friable; slightly sticky and slightly plastic; few fine and medium roots; few very fine tubular pores; carbonates disseminated throughout; 25 percent gravel, 10 percent cobbles, 5 percent stones; strong effervescent; strongly alkaline (pH 8.5); abrupt wavy boundary. (4 to 10 inches thick)
R--27 inches; Straight Cliffs Formation sandstone bedrock.
TYPE LOCATION: Garfield County, UT; Upper Canaan Creek USGS quad; lat. 37 degrees 39 minutes 01 seconds N. and long. 111 degrees 42 minutes 57 seconds W., NAD 83.
RANGE IN CHARACTERISTICS:
Soil moisture Aridic ustic moisture regime.
Mean annual soil temperature - 47 to 53 degrees F
Depth to lithic contact - 20 to 40 inches to sandstone
Particle-size control section (weighted average):
Clay content: 18 to 27 percent
Rock fragments: 35 to 75 percent
A horizon:
Hue: 7.5YR or 10YR
Value: 5 to 7 dry, 4 to 6 moist
Chroma: 4 or 5 dry or moist
Rock fragments: 35 to 75 percent gravel, cobbles, channers, stones, and flagstones
Reaction: slightly to moderately alkaline
C horizons:
Hue: 2.5YR to 10YR
Value: 5 to 7 dry, 4 to 6 moist
Chroma: 4 or 5 dry, 3 or 4 moist
Texture: gravelly loam, very gravelly loam
Clay content: 18 to 27 percent
Rock fragments: 25 to 75 percent gravel, cobbles, channers, stones, and flagstones
Reaction: slightly to strongly alkaline
COMPETING SERIES: This the Zopilote (T CO) series. Zopilote soils are very deep soils.
GEOGRAPHIC SETTING:
Parent material: residuum derived from sandstone
Landform: hillslopes and ridges on structural benches
Slopes: 10 to 40 percent
Elevation: 6,300 to 7,600 feet
Mean annual temperature: 45 to 51 degrees F
Mean annual precipitation: 12 to 16 inches
Frost-free period: 100 to 120 days.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Colskel series. The Colskel soils are shallow to bedrock.
DRAINAGE AND PERMEABILITY: Well drained; medium runoff; moderate permeability.
USE AND VEGETATION: Suzmayne soils are used for livestock grazing, recreation and wildlife habitat. Potential native vegetation includes Utah juniper, two-needle pinyon, Utah serviceberry, Gambel Oak, birchleaf mountain mahogany, mountain big sagebrush, bitterbrush, muttongrass, and Indian ricegrass. These soils have been correlated to the Upland Stony Loam (Pinyon-Utah Juniper) 035XY321UT ecological site at the type location in Utah.
DISTRIBUTION AND EXTENT: Southern Utah; LRR D, MLRA 35; small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona
SERIES ESTABLISHED: Garfield County, UT, Grand-Staircase Escalante soil survey area; 2004.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Particle-size control section - The zone from 10 to 27 inches. (part of C1 and C2 horizons)
Lithic contact - The contact with sandstone at 27 inches. (R horizon)
The assignment of the cation-exchange activity class is inferred from lab data from similar soils in the surrounding area.
Taxonomic version - Ninth Edition, 2003