LOCATION HORNEYBUCK MOEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, mesic Aquic Paleudults
TYPICAL PEDON: Horneybuck silt loam on a 4 percent slope in a pasture at an elevation of 1,310 feet. (Colors are for moist soils unless otherwise stated.)
A--0 to 2 inches; brown (10YR 4/3) silt loam; weak fine granular structure; friable; many very fine and fine roots; 10 percent chert gravel; strongly acid (pH 5.3); abrupt smooth boundary. (2 to 7 inches thick)
E--2 to 8 inches; yellowish brown (10YR 5/4) silt loam; weak fine granular structure; friable; many very fine and fine roots; common brown (10YR 4/3) organic coats on faces of peds; 10 percent chert gravel; strongly acid (pH 5.3); clear smooth boundary. (0 to 10 inches thick)
Bt1--8 to 15 inches; yellowish brown (10YR 5/6) gravelly silt loam; weak fine subangular blocky structure; friable; common fine to coarse roots throughout; common brown (10YR 4/3) organic coats and few faint clay films on faces of peds; common fine soft dark masses of iron and manganese accumulation; 16 percent chert gravel; strongly acid (pH 5.2); clear smooth boundary.
Bt2--15 to 20 inches; strong brown (7.5YR 5/6) gravelly silty clay loam; moderate fine subangular blocky structure; firm; common very fine and fine roots throughout; common faint clay films on faces of peds; common fine soft dark masses of iron and manganese accumulation; 20 percent chert gravel; strongly acid (pH 5.1); clear smooth boundary.
Bt3--20 to 24 inches; strong brown (7.5YR 5/6) gravelly silty clay loam; moderate fine subangular blocky structure; firm; common very fine and fine roots throughout; common faint clay films on faces of peds; few fine light brownish gray (10YR 6/2) Fe depletions and common fine red (2.5YR 4/6) Fe accumulations; common fine soft dark masses iron and manganese accumulation; 30 percent chert gravel; very strongly acid (pH 5.0); abrupt wavy boundary. (Combined thickness of the Bt horizon is 13 to 33 inches)
2B/E--24 to 40 inches; strong brown (7.5YR 5/6) and red (2.5YR 4/6) gravelly silt loam; weak very fine and fine subangular blocky structure; firm; few very fine and fine roots; common faint clay films on faces of peds, common prominent gray (10YR 5/1) clay films in root channels and/or pores, and common light brownish gray (10YR 6/2) clay depletions in root channels and/or pores; common fine soft dark masses of iron and manganese accumulation; 28 percent chert gravel; very strongly acid (pH 5.0); gradual wavy boundary. (0 to 19 inches thick)
2Bt--40 to 60 inches; red (2.5YR 4/6), and strong brown (7.5YR 5/6) very gravelly silty clay loam; weak very fine and fine subangular blocky structure; firm; common gray (10YR 5/1) clay films in root channels and/or pores, and common faint clay films on faces of peds; common fine soft dark masses of iron and manganese accumulation; 45 percent chert gravel; very strongly acid (pH 5.0). (0 to 37 inches thick)
TYPE LOCATION: Stone County Missouri; 1 1/2 miles NW of Hurley; 1200 feet east and 2100 feet north of the south west corner of section 23, T. 26 N., R. 24 W.; Crane USGS topographic quadrangle; latitude 36 degrees 56 minutes 31 seconds N. and longitude 93 degrees 32 minutes 5 seconds W.; UTM coordinates 4,088,400 meters N. and 452,
RANGE IN CHARACTERISTICS:
Depth to Bedrock: greater than 60 inches.
A or Ap horizon
Value: 3 to 5
Chroma: 2 to 6
Total rock fragments: 2 to 10 percent
Reaction: strongly acid to neutral
E horizon
Value: 4 or 5
Chroma: 3 or 4
Total rock fragments: 2 to 10
Reaction: strongly acid to neutral
Bt horizon
Hue: 7.5YR or 10YR
Value: 4 or 5
Chroma: 3 to 6
Note: Clay depletions (when present) are 10YR 6/2
Fine-earth: silt loam, silty clay loam, or clay loam
Total rock fragments: 1 to 30 percent; 1 to 30 percent gravel and 0 to 10 percent cobbles
Reaction:
2B/E horizon
Hue: 2.5YR to 10YR
Value: 4 to 6
Chroma: 4 to 6
Clay depletions
Value: 5 to 7
Chroma: 1 or 2
Fine-earth: silt loam, silty clay loam, or clay loam
Total rock fragments: 1 to 30 percent; 1 to 30 percent gravel and 0 to 20 percent cobbles
Reaction: very strongly acid or strongly acid
2Bt horizon
Hue: 2.5YR to 10 YR
Value: 3 to 5
Chroma: 4 to 8
Clay depletions (when present)
Hue: 7.5YR or 10YR
Value: 5 or 6
Chroma: 1 or 2
Fine-earth: silt loam, silty clay loam, silty clay, loam, or clay loam
Total rock fragments: 35 to 80 percent; 15 to 80 percent gravel and 0 to 60 percent cobbles
COMPETING SERIES: There are no other series in this family.
GEOGRAPHIC SETTING: Horneybuck soils are on headslopes, sinkholes, and saddles on ridges. Slopes range from 3 to 8 percent. These soils formed in colluvium and the underlying valley fill. Elevations are commonly 1250 to 1450 feet. 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 soils are Captina, Clarksville, Goss, Hailey, Noark, Rueter, Scholten and Tonti soils. Captina, Clarksville, Noark, Scholten, and Tonti soils are on ridgetops. Captina, Scholten, and Tonti soils have fragipans. Clarksville and Noark soils have a skeletal particle size class. Goss, Hailey, and Rueter soils are on sideslopes and have a skeletal particle size class.
DRAINAGE AND PERMEABILITY: Moderately well drained. Runoff is medium. Permeability is moderately slow.
USE AND VEGETATION: These soils are used mainly for pasture and hayland. A few areas are used for cultivated crops. Native vegetation is mixed hardwoods.
DISTRIBUTION AND EXTENT: The Ozarks region (MLRA's 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 - the zone from 0 to 8 inches (A and E horizons).
Argillic horizon - the zone from 8 to 60 inches - Bt1, Bt2, Bt3, 2B/E, and 2Bt horizons).
Aquic feature - clay depletions with redoximorphic concentrations starting at 20 inches
ADDITIONAL DATA: Missouri Characterization Lab sample number M9220951.
Interpretations for the type location are stored in NASIS as DMU description 209 73115.