LOCATION PINERUN MOEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, siliceous, active, mesic Typic Hapludalfs
TYPICAL PEDON: Pinerun very gravelly silt loam - on a 1 percent slope in a pasture at an elevation of 1,055 feet. (Colors are for moist soil unless otherwise stated)
A--0 to 6 inches; very dark grayish brown (10YR 3/2) very gravelly silt loam; pale brown (10YR 6/3) dry; moderate fine granular structure; friable; many fine roots; 45 percent chert gravel; 5 percent chert cobbles; slightly acid (pH 6.1); clear smooth boundary. (5 to 9 inches thick)
BA--6 to 11 inches; brown (7.5YR 4/4) very gravelly silt loam; weak very fine subangular blocky structure; friable; many fine roots; common very dark grayish brown (10YR 3/2) organic coating onfaces of peds; 31 percent chert gravel; 5 percent chert cobbles; slightly acid (pH 6.4); clear smooth boundary. (0 to 7 inches thick)
Bt1--11 to 18 inches; brown (7.5YR 4/4) very gravelly silt loam; weak very fine and fine subangular blocky structure; friable; many fine roots; very few faint clay films on faces of peds and in pores; 40 percent chert gravel; 10 percent chert cobbles; slightly acid (pH 6.3); clear smooth boundary.
Bt2--18 to 29 inches; reddish brown (5YR 4/4) extremely gravelly silt loam; weak very fine and fine subangular blocky structure; friable; common fine roots; very few faint clay films on faces of peds; 50 percent chert gravel; 15 percent chert cobbles; slightly acid (pH 6.1); gradual smooth boundary.
Bt3--29 to 36 inches; reddish brown (5YR 4/4) very gravelly silt loam; weak very fine subangular blocky structure; friable; few fine roots; few faint clay films on faces of peds; common fine black masses of iron and manganese accumulation on faces of peds; 47 percent chert gravel; 5 chert percent cobbles; strongly acid (pH 5.5); abrupt wavy boundary. (Combined thickness of the Bt horizon is 20 to 45 inches)
Btb--36 to 60 inches; dark reddish brown (5YR 3/4) extremely gravelly silty clay loam; moderate fine subangular blocky structure; firm; few fine roots; few faint clay films on faces of peds; few fine black masses of iron and manganese accumulation on faces of peds; 60 percent chert gravel; 10 percent chert cobbles; moderately acid (pH 5.7).
TYPE LOCATION: Stone County Missouri; 2.5 miles NW of Galena; 700 feet west and 2650 feet south of the northeast corner of section 36, T. 25 N., R. 24 W; UTM coordinates 454,810m easting and 4,075,520m northing; Elsey USGS quadrangle; latitude 36 degrees 49 minutes 34 seconds N., 93 degrees 30 minutes 48 seconds W..
RANGE IN CHARACTERISTICS:
Depth to Bedrock: greater than 80 inches
Reaction: strongly acid to neutral.
The particle-size control section averages from 35 to 65 percent rock fragments.
A or Ap horizon
Hue: 7.5YR or 10YR
Value: 3 or 4
Chroma: 2 to 6
Fine-earth: silt loam
Total rock fragments: 0 to 50 percent; 0 to 50 percent gravel and 0 to 15 percent cobbles
E or BE horizon (where present)
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 2 or 4
Fine-earth: silt loam
Total rock fragments: 30 to 45 percent
BA horizon
Hue: 5YR to 10YR
Value: 4 or 5
Chroma: 4 to 6
Fine-earth: silt loam or loam
Total rock fragments: 15 to 50 percent; 15 to 50 percent gravel and 0 to 20 percent cobbles
Bt horizon
Hue: 5YR to 10YR
Value: 3 to 5
Chroma: 3 to 6
Fine-earth: silt loam, clay loam, or silty clay loam
Total rock fragments: 15 to 80 percent; 15 to 80 percent gravel and 0 to 40 percent cobbles
Btb horizon
Hue: 2.5YR to 10YR
Value: 3 to 5
Chroma: 2 to 8
Fine-earth: loam, silt loam, clay loam, silty clay loam, sandy clay loam, silty clay, or clay
Total rock fragments: 50 to 80 percent; 50 to 80 percent gravel and 0 to 45 percent cobbles
Note: The 2Bt horizon, where present, has colors and textures similar to the Btb horizon. Rock fragment content ranges from 25 to 80 percent; 25 to 80 percent gravel and 0 to 20 percent cobbles.
Note: Where the chroma is more than 4 in the lower horizons, the hue is 10YR.
COMPETING SERIES: There are no other series in this family.
GEOGRAPHIC SETTING: Pinerun soils are on narrow flood plains in cherty limestone and dolomite areas. Slopes range from 0 to 3 percent. These soils formed in alluvium with a high content of chert fragments. The mean annual temperature varies from 55 to 58 degrees F. The mean annual precipitation varies from 38 to 48 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Britwater, Goss, Moko, Scholten, Ocie, Rueter, Secesh, and Waben soils. Britwater and Waben soils are on terraces. Britwater soils have a fine-loamy particle size class and Waben soils have a lower base saturation. Goss, Moko, Scholten, Ocie, and Rueter soils are on uplands. Goss soils have a clayey-skeletal particle size class. Moko soils are less than 20 inches to bedrock. Scholten soils have a fragipan. Ocie soils have a strongly contrasting particle size class, and Rueter soils are somewhat excessively drained. Secesh soils are on larger floodplains and have a fine-loamy particle size class.
DRAINAGE AND PERMEABILITY: Well drained, low runoff, moderate permeability. The saturated hydraulic conductivity is moderately high. These soils are subject to occasional flooding.
USE AND VEGETATION: These soils are used mainly for pasture and hay. A few areas are used for cultivated crops. Native vegetation is mixed hardwoods.
DISTRIBUTION AND EXTENT: The Ozarks region (MLRAs 116A and 116B) of southern Missouri and possibly north Arkansas. This series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Stone County, Missouri, 1997.
REMARKS: Diagnostic horizons and features in this pedon include:
Ochric epipedon - from 0 to 11 inches (A and BA horizons).
Argillic horizon - from a depth of 11 to 60 inches (Bt1, Bt2, Bt3, and Btb horizons).
ADDITIONAL DATA: University of Missouri soil characterization laboratory data number M9020912.