LOCATION YATNE UTEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, mixed, superactive, mesic Aridic Calciustepts
TYPICAL PEDON: Yatne very stony loam - on a convex colluvial wedge, sloping 38 percent to the west at 6,380 feet elevation - woodland. (Colors are for dry soil unless otherwise noted.) Surface is covered by 10 percent gravel, 10 percent cobbles, 15 percent stones, and 15 percent boulders.
A--0 to 6 inches; yellowish brown (10YR 5/4) very stony loam, dark yellowish brown (10YR 4/4) moist; weak fine and medium granular structure; soft, friable, slightly sticky and nonplastic; common fine and few very fine and medium roots; common very fine interstitial and few fine tubular pores; 10 percent gravel, and 15 percent stones and 10 percent boulders; slightly effervescent; moderately alkaline (pH 8.3); clear wavy boundary. (3 to 10 inches thick)
Bw--6 to 15 inches; light brownish gray (10YR 6/2) very stony loam, brown (10YR 5/3) moist; weak medium and fine subangular blocky structure; slightly hard, firm, slightly sticky and nonplastic; common fine and few very fine and medium roots; few fine tubular and very fine interstitial pores; 15 percent gravel, 10 percent cobbles and 10 percent stones; slightly effervescent; calcium carbonate disseminated throughout; moderately alkaline (pH 8.4); gradual wavy boundary. (5 to 15 inches thick)
Bk1--15 to 27 inches; pale brown (10YR 6/3) very stony loam, yellowish brown (10YR 5/4) moist; moderate fine and medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; common very fine and few fine and medium roots; common very fine interstitial pores; 20 percent gravel, 10 percent cobbles, and 10 percent stones; strongly effervescent, secondary calcium carbonate disseminated throughout; moderately alkaline (pH 8.2); gradual irregular boundary. (5 to 25 inches thick)
Bk2--27 to 37 inches; light gray (10YR 7/2) cobbly loam, pale brown (10YR 6/3) moist; weak medium subangular blocky structure; hard, firm, slightly sticky and slightly plastic; few very fine and fine roots; common fine interstitial pores; 15 percent gravel, 10 percent cobbles, and 5 percent stones; strongly effervescent; secondary calcium carbonate segregated as many medium soft masses; strongly alkaline (pH 8.5); gradual irregular boundary. (7 to 24 inches thick)
2C1--37 to 45 inches; light yellowish brown (10YR 6/4) cobbly clay loam, yellowish brown (10YR 5/4) moist; weak fine and medium subangular blocky structure; hard, very firm, slightly sticky and slightly plastic; few fine roots; few very fine tubular pores; 10 percent gravel, 10 percent cobbles, and 5 percent stone; slightly effervescent; moderately alkaline (pH 8.3); gradual wavy boundary. (5 to 29 inches thick)
2C2--45 to 60 inches; light yellowish brown (10YR 6/4) very stony loam, yellowish brown (10YR 5/4) moist; massive; very hard, very firm, slightly sticky and slightly plastic; few very fine tubular pores; 10 percent gravel, 20 percent cobbles, and 25 percent stones; secondary calcium carbonate coatings on surfaces along pores; slightly effervescent; moderately alkaline (pH 8.3).
TYPE LOCATION: Kane County, Utah; Grand Staircase-Escalante National Monument, at the head of Righthand Collet Canyon; Petes Cove Quadrangle; Latitude 37 degrees 28 minutes 17 seconds North and Longitude 111 degrees 32 minutes 36 seconds West; Datum: NAD 83.
RANGE IN CHARACTERISTICS:
Soil moisture - The soil moisture control section is moist in all parts during the 60 days following the winter solstice. It is moist in some part less than 40 percent of the time and moist in all parts less than 25 percent of the time when the soil temperature at 20 inches is above 41 degrees F. December and August are the wettest months and May and June are the driest. Aridic ustic soil moisture regime.
Mean annual soil temperature - 47 to 51 degrees F.
Depth to calcic horizon - 15 to 37 inches
Particle-size control section (weighted average):
Clay content - 18 to 27 percent
Rock fragments - Average 35 to 60 percent. Some individual horizon may contain less than 35 percent in any one horizon.
A horizon
Hue: 10YR or 2.5Y
Value: 4 to 6 dry, 3 to 5 moist
Chroma: 3 or 4, dry or moist
Rock fragments: 15 to 50 percent gravel, cobble, stones, and boulders
Bw horizon
Hue: 10YR or 2.5Y
Value: 4 to 6 dry, 3 to 5 moist
Chroma: 2 to 4, dry or moist
Texture: Fine sandy loam and loam, with appropriate modifiers
Rock fragments: 35 to 60 percent gravel, cobble, stones, and boulders
Bk horizons
Hue: 10YR or 2.5Y
Value: 5 to 7 dry, 4 to 6 moist
Chroma: 2 to 6, dry or moist
Texture: Fine sandy loam, sandy loam, loam, with appropriate modifiers
Calcium carbonates equivalent: 15 to 30 percent
Rock fragments: 30 to 60 percent gravel, cobble, and stones
2C horizon (when present)
Hue: 10YR or 2.5Y
Value: 5 or 6 dry, 4 or 5 moist
Chroma: 3 to 6, dry or moist
Texture: loam, clay loam, with appropriate modifiers
Rock fragments: 25 to 90 percent gravel, cobble, and stones
COMPETING SERIES: These are the
Buckndoe (AZ),
Chicosa (CO),
Katzine (AZ),
Saraton (CO),
Tinaja (NM),
Twobutte (KS) and
Upler (UT) series.
Buckndoe soils contain less than 18 percent clay in the particle size control section, and have a pan at 40 to 59 inches.
Chicosa soils are moist intermittently April through August, dry October through February in LRR E and G, MLRA 49, 67, and 69.
Katzine soils contain less than 18 percent clay in the particle size control section and have 7.5YR and 5YR hue.
Saraton soils are moderately deep to bedrock.
Tinaja soils have a lithologic discontinuity at 40 inches or less underlain by loamy sand or sand, and soil temperature that range from 50 to 56 degrees F.
Twobutte soils are moderately deep to sandstone in the Central
High Tablelands (MLRA 72).
Upler soils contain less than 18 percent clay in the particle size control section, and gravel and cobbles dominate the profile.
GEOGRAPHIC SETTING:
Parent material: colluvium and slope alluvium derived from calcareous Cretaceous sandstone and shale
Landform: landslide deposits on escarpments and hillslopes
Elevation: 6,000 to 7,000 feet
Slope: 15 to 50 percent
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 Aridic Ustorthents, Kydestea, Colskel, and Menefee soils. Aridic Ustorthents exist on steep escarpments on landslide deposits. The Kydestea, Colskel, and Menefee soils are all formed in residuum and are on highly dissected structural benches and escarpments surrounding colluvial deposits.
DRAINAGE AND PERMEABILITY: Well drained; high runoff; moderately slow to rapid permeability.
USE AND VEGETATION: Yatne soils are used for livestock grazing, wildlife habitat, and fuelwood production. Potential native vegetation is Utah juniper, two-needle pinyon, green mormontea, roundleaf buffaloberry, birchleaf mountain mahogany, Utah serviceberry, Indian ricegrass, galleta, and muttongrass. These soils have been correlated to correlated Upland Steep Stony Loam (Pinyon- Utah Juniper) 035XY317UT ecological site at the type location in Utah.
DISTRIBUTION AND EXTENT: Yatne soils are of small extent on the Kaiparowits Plateau of the Grand Staircase-Escalante National Monument. MLRA 35.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Phoenix, Arizona.
SERIES ESTABLISHED: Grand Staircase-Escalante National Monument soil survey, Parts of Kane County, Utah; 2001.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - The zone from 0 to 6 inches (A horizons)
Cambic horizon - The zone from 6 to 15 inches (Bw horizon)
Calcic horizon - The zone from 15 to 37 inches (Bk1 and Bk2 horizons)
Classified according to Soil Taxonomy Second Edition, 1999; Keys to Soil Taxonomy Tenth Edition, 2006.