LOCATION WASOLA MOEstablished Series
TAXONOMIC CLASS: Fine-loamy, siliceous, active, mesic Fragiaquic Hapludalfs
TYPICAL PEDON: Wasola silt loam - on a west facing planar foot slope of 3 percent slope in a fescue pasture at an elevation of 920 feet. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 9 inches; dark grayish brown (10YR 4/2) silt loam, light brownish gray (10YR 6/2) dry; moderate medium granular structure parting to moderate fine granular; friable; common fine roots; many fine irregular and tubular pores; few fine round black (N 2/0) slightly hard concretions of iron and manganese; very strongly acid (pH 4.7); clear smooth boundary. (5 to 10 inches thick)
Bt1--9 to 17 inches; yellowish brown (10YR 5/4) silt loam, moderate medium subangular blocky structure parting to weak fine subangular blocky; firm; common fine roots; common fine and medium tubular pores; common faint dark grayish brown (10YR 4/2) clay films on faces of peds; few fine distinct grayish brown (10YR 5/2) clay depletions; few fine prominent strong brown (7.5YR 4/6) masses of iron accumulation; few fine round black (N 2/0) slightly hard concretions of iron and manganese; moderately acid (pH 5.6); clear smooth boundary.
Bt2--17 to 23 inches; yellowish brown (10YR 5/4) clay loam; moderate medium subangular blocky structure parting to weak fine subangular blocky; very firm; common fine and very fine roots; common tubular pores; common faint dark grayish brown (10YR 4/2) clay films on faces of peds; common fine distinct grayish brown (10YR 5/2) iron depletions; common fine distinct yellowish brown (10YR 5/6) masses of iron accumulation; common medium round black (N 2/0) slightly hard concretions of iron and manganese; 10 percent subrounded chert gravel; moderately acid (pH 5.8); clear smooth boundary. (combined thickness of the Bt horizon is 10 to 22 inches)
2Btx1--23 to 32 inches; yellowish brown (10YR 5/6) gravelly clay loam; moderate medium subangular blocky structure parting to weak fine subangular blocky; very firm; 30 percent brittleness; common very fine roots; common very fine tubular pores; common distinct gray (10YR 5/1) clay films on faces of peds; common medium prominent grayish brown (10YR 5/2) iron depletions; common medium prominent strong brown (7.5YR 5/6) masses of iron accumulation; common medium round black (N 2/0) slightly hard concretions of iron and manganese; 2 percent subrounded chert gravel; moderately acid (pH 5.7); clear smooth boundary.
2Btx2--32 to 48 inches; brown (10YR 4/3) very gravelly clay loam; moderate fine angular blocky structure; very firm; 30 percent brittleness; few very fine roots; many very fine tubular pores; common faint dark grayish brown (10YR 4/2) clay films on faces of peds; common fine prominent grayish brown (10YR 5/2) iron depletions; few fine prominent olive yellow (2.5Y 6/8) and few medium prominent strong brown (7.5YR 5/8) masses of iron accumulation; common fine rounded black (N 2/0) slightly hard concretions of iron and manganese; 35 percent subangular sandstone gravel; slightly acid (pH 6.2); gradual wavy boundary. (combined thickness of the 2Btx horizon is 15 to 30 inches)
3Bt--48 to 80 inches; brownish yellow (10YR 6/8) clay; weak fine subangular blocky structure; firm; few very fine tubular pores; common faint brownish yellow (10YR 6/6) and common prominent brown (10YR 5/3) clay films on faces of peds; common medium rounded black (N 2/0) slightly hard concretions of iron and manganese; 5 percent subangular sandstone gravel; neutral (pH 7.1).
TYPE LOCATION: Howell County, Missouri; about 6 miles south of Caulfield, Missouri; 625 feet north and 5,550 feet east of the SW corner of section 31, T. 22 N., R. 10 W; Caulfield USGS quadrangle; UTM zone 15, 580500m easting, 4042900m northing.
RANGE IN CHARACTERISTICS:
Solum thickness: 80 or more inches
Depth to bedrock: more than 80 inches
A or Ap horizon
Hue: 10YR or 2.5Y
Value: 3 or 4 moist, 4 to 6 dry
Chroma: 2 or 3
Texture: silt loam, loam
Rock fragments: 0 to 20 percent gravel, 0 to 5 percent cobbles
Reaction very slightly acid to very strongly acid
Bt horizon
Hue: 10YR to 5YR
Value: 4 to 6
Chroma: 4 to 6
Texture: silt loam, silty clay loam, clay loam
Redoximorphic features: iron depletions with chroma of 2 or less, concretions of iron and manganese
Rock fragments: 0 to 25 percent gravel, 0 to 5 percent cobbles
Reaction neutral to strongly acid
2Btx horizon
Hue: 10YR or 7.5YR
Value: 4 to 6
Chroma: 2 to 6
Texture: silty clay loam, clay loam, silt loam, loam
Redoximorphic features: iron depletions with chroma of 2 or less, concretions of iron and manganese
Rock fragments: 0 to 50 percent gravel, 0 to 5 percent cobbles
Reaction neutral to very strongly acid
3Bt horizon
Hue: 10YR to 5YR
Value: 3 to 6
Chroma: 4 to 8
Texture: silty clay, clay
Redoximorphic features: iron depletions with chroma of 2 or less, concretions of iron and manganese
Rock fragments: 0 to 65 percent gravel, 0 to 5 percent cobbles
Reaction strongly acid to slightly alkaline
COMPETING SERIES: There are no other series in this family.
GEOGRAPHIC SETTING: Wasola soils are on very gently sloping to moderately sloping foot slopes and basins. Slopes range from 1 to 8 percent. They formed in loamy slope alluvium and clayey residuum. Elevations are 500 to 1,200 feet. Mean annual temperature ranges from 54 to 58 degrees F., and the mean annual precipitation ranges from 38 to 45 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Alred, Eudy, Gunlock, Hartville, Pomme, Mano, and Ocie soils. Alred, Mano, and Ocie soils have contrasting particle size control sections and are on side slopes. In addition, Ocie soils have bedrock at 40 to 60 inches. Eudy soils have bedrock at 20 to 40 inches and are on ridge tops. Gunlock soils are fine textured and are on similar positions. Hartville soils do not have fragic properties, and are on stream terraces. Pomme soils are well drained, do not have fragic properties, and are on similar positions
DRAINAGE AND PERMEABILITY: Somewhat poorly drained. Runoff is negligible to high. Permeability is slow and the saturated hydraulic conductivity is moderately low. A water table is present at a depth of 1 to 2 feet in most years.
USE AND VEGETATION: This soil is used mainly for hay, pasture and timber. Native vegetation is mixed hardwoods.
DISTRIBUTION AND EXTENT: The Ozarks region (MLRA 116A) of southern Missouri and possibly northern Arkansas. The series is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Howell County, Missouri soil survey; 2004.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface to a depth of 9 inches. (Ap horizon).
Argillic horizon - the zone from 9 to 80 inches (Bt, 2Btx, and 3Bt horizons).
Zone where aquic conditions occur - 9 to 80 inches.
Fragic properties - 23 to 48 inches (2Btx horizons).
This soil is being mapped predominantly in the Jefferson City formation (Ordivician age) in Missouri.
Sampled for the University of Missouri Soil Characterization Lab as M9509143 (sampled as Gunlock).