LOCATION CORDWOOD WY
Tentative Series
ALB/DPG/DEW
05/2024
CORDWOOD SERIES
Depth class: Deep and Very deep
Drainage class: Well drained
Saturated hydraulic conductivity class: Moderately low
Parent material: Alluvium
Geomorphic location: Alluvial fans or stream terraces
Slope range: 1 to 15 percent
Mean annual temperature: 4.5 degrees C (40 degrees F)
Mean annual precipitation: 205 millimeters (8 inches)
Taxonomic Class:
Loamy-skeletal, mixed, superactive, frigid Petronodic Ustic Haplocalcids
Typical Pedon:
Cordwood channery sandy loam in rangeland (Colors are for dry soil unless otherwise noted.)
A--0 to 7 centimeters; light brownish gray (10YR 6/2) channery sandy loam, dark yellowish brown (10YR 3/4) moist; moderate thick platy structure; soft, very friable, slightly sticky, nonplastic; common very fine and fine roots throughout; common very fine and fine vesicular pores; 20 percent channers; strongly effervescent; moderately alkaline (pH 8.4); clear smooth boundary.
Bk--7 to 23 centimeters; yellowish brown (10YR 6/3) sandy clay loam, dark yellowish brown (10YR 4/4) moist; moderate medium subangular blocky structure; moderately hard, friable, slightly sticky, slightly plastic; common very fine and fine, few medium, coarse, and very coarse roots throughout; common very fine tubular pores; 10 percent channers; 75 percent calcium carbonate concretions on bottom of rock fragments; strongly effervescent; strongly alkaline (pH 8.5); clear smooth boundary.
Bkn--23 to 41 centimeters; light yellowish brown (10YR 6/4) sandy clay loam, yellowish brown (10YR 4/6) moist; weak medium subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; common very fine and fine roots throughout; common very fine tubular pores; 10 percent channers; 75 percent calcium carbonate concretions on bottom of rock fragments; strongly effervescent; very strongly alkaline (pH 8.8); clear smooth boundary.
BCkn1--41 to 72 centimeters; very pale brown (10YR 7/3) very channery loamy coarse sand, yellowish brown (10YR 5/4) moist; single grain; loose, nonsticky, nonplastic; 50 percent channers; 90 percent calcium carbonate concretions on bottom of rock fragments; strongly effervescent; very strongly alkaline (pH 9.2); gradual smooth boundary.
BCkn2--72 to 200 centimeters; very pale brown (10YR 7/3) very channery loamy coarse sand, yellowish brown (10YR 5/4) moist; single grain; loose, nonsticky, nonplastic; 50 percent channers; 90 percent carbonate concretions on bottom of rock fragments; strongly effervescent; strongly alkaline (pH 8.6).
Type Location:
Sweetwater County, WY
USGS Quadrangle: Sage Creek Basin
Latitude: 41.3098500
Longitude: -109.4505200
Datum: WGS84
Coordinates source: Hand-held GPS
Range in Characteristics:
Depth to calcic horizon--5 to 41 centimeters
Depth to sodic properties--23 to 40 centimeters
Depth to bedrock--115 to 200 centimeters
Particle-size control section (weighted averages):
Clay content--11 to 26 percent
Sand content--51 to 81 percent
Total rock fragments--41 to 45 percent
A horizon:
Hue--10YR
Value--6 or 7 dry; 3 or 4 moist
Chroma--2 or 3 dry; 3 or 4 moist
Texture (less than 2 mm fraction)--Fine sandy loam or sandy loam
Clay content--11 to 19 percent
Rock fragments--15 to 34 percent - 0 to 30 percent gravels, 0 to 30 percent channers
Calcium carbonate equivalent--3 to 15 percent
Reaction--7.8 to 8.4 pH
Thickness-- 5 to 7 centimeters
Bk horizon (s):
Hue--7.5YR or 10YR
Value--6 dry; 4 or 5 moist
Chroma--3 or 4 dry or moist
Texture (less than 2 mm fraction)--Fine sandy loam, sandy loam, or sandy clay loam
Clay content--13 to 27 percent
Rock fragments--5 to 40 percent - 0 to 35 percent gravels, 0 to 30 percent channers
Calcium carbonate equivalent--5 to 15 percent
Reaction--8.0 to 8.4 pH
Thickness--16 to 35 centimeters
Bkn horizon (s) (when present):
Hue--10YR
Value--6 dry; 4 moist
Chroma--4 dry; 6 moist
Texture (less than 2 mm fraction)--Sandy loam or sandy clay loam
Clay content--17 to 27 percent
Rock fragments--5 to 30 percent--5 to 30 percent channers
Calcium carbonate equivalent--5 to 15 percent
Sodium absorption ratio--13 to 15
Reaction--8.5 to 9.0 pH
Thickness--0 to 35 centimeters
C horizon (s):
Hue--10YR
Value--7 or 8 dry; 5 or 6 moist
Chroma--1 to 3 dry; 4 moist
Texture (less than 2 mm fraction)--Loamy coarse sand, coarse sandy loam, coarse sand, sandy loam, sandy clay loam, or clay loam
Clay content--4 to 30 percent
Rock fragments--20 to 55 percent - 0 to 55 percent channers, 0 to 55 percent gravels
Calcium carbonate equivalent--5 to 25 percent
Sodium absorption ratio--13 to 25
Reaction--8.5 to 9.6 pH
Thickness--159 to 160 centimeters
Competing Series:
There are no competing series.
Geographic Settings:
Parent material--Alluvium
Landform--Alluvial fans or stream terraces
Slope--1 to 15 percent
Mean annual air temperature--2.5 to 7.0 degrees C (37 to 45 degrees F)
Mean annual precipitation--180 to 230 millimeters (7 to 9 inches)
Frost-free period--50 to 100 days
Elevation--1,840 to 2,050 meters (6,040 to 6,730 feet)
Climate--long, cold winters; cool, moist springs; short, warm summers
Geographically Associated Soils:
None listed.
Drainage and Saturated Hydraulic Conductivity:
Drainage class: Well drained
Saturated Hydraulic Conductivity: 0.5 to 1.5 m/sec
Use and Vegetation:
Cordwood soils are primarily used for rangeland. The potential native vegetation is Wyoming big sagebrush, needle and thread, thickspike wheatgrass, bottlebrush squirreltail, Indian ricegrass, and Sandberg bluegrass.
Distribution and Extent:
Cordwood soils are of moderate extent in southwestern Wyoming; MLRA 34A.
Soil Survey Region (SSR) Responsible:
Bozeman, Montana
Series Proposed:
Sweetwater County, WY 2023. Cordwood series is derived from a local area.
Remarks:
Typical Pedon Taxonomic Features:
Ochric epipedon--0 to 7 centimeters (A horizon)
Calcic horizon-- 41 to 200 centimeters (BCkn1 and BCkn2 horizons)
Sodic properties--23 to 200 centimeters (Bkn, BCkn1, and BCkn2 horizons)
Secondary calcium carbonate accumulation--7 to 200 centimeters (Bk, Bkn, BCkn1, and BCkn2 horizons)
Particle-size control section--25 to 100 centimeters
Taxonomic Version: Keys to Soil Taxonomy, 13th edition (2022)
National Cooperative Soil Survey
U.S.A.