LOCATION HAILEY MOEstablished Series
TAXONOMIC CLASS: Loamy-skeletal, siliceous, active, mesic Typic Paleudalfs
TYPICAL PEDON: Hailey extremely gravelly silt loam - on a northeast facing concave slope of 47 percent under mixed broadleaf species at an elevation of 1,380 feet. (Colors are for moist soil unless otherwise stated.)
A--0 to 4 inches; very dark grayish brown (10YR 3/2) extremely gravelly silt loam, grayish brown (10YR 5/2) dry; strong fine granular structure; very friable; common medium roots; 80 percent chert gravel; moderately acid; clear smooth boundary. (1 to 6 inches thick)
AB--4 to 11 inches; brown (10YR 4/3) extremely gravelly silt loam; weak very fine granular structure; very friable; many coarse roots; 65 percent chert gravel and 5 percent chert cobbles; strongly acid; gradual smooth boundary. (4 to 30 inches thick)
Bw1--11 to 24 inches; dark yellowish brown (10YR 4/4) very gravelly silt loam; weak very fine subangular blocky structure; very friable; common medium roots; 35 percent chert gravel and 5 percent chert cobbles; strongly acid; gradual smooth boundary.
Bw2--24 to 30 inches; yellowish brown (10YR 5/4) very gravelly silt loam; weak very fine subangular blocky structure; very friable; common medium roots; 40 percent chert gravel and 10 percent chert cobbles; very strongly acid; gradual smooth boundary.
Bw3--30 to 37 inches; yellowish brown (10YR 5/6) extremely gravelly silt loam; weak very fine subangular blocky structure; friable; common medium roots; 60 percent chert gravel and 15 percent chert cobbles; strongly acid; gradual smooth boundary.
Bw4--37 to 62 inches; light yellowish brown (10YR 6/4) extremely gravelly silt loam; weak very fine subangular blocky structure; very friable; few coarse roots; 60 percent chert gravel and 15 percent chert cobbles; strongly acid. (The combined Bw horizons are 35 to 65 inches thick)
2Bt--62 to 85 inches; 40 percent red (2.5YR 4/6), 40 percent strong brown (7.5YR 5/6), and 20 percent dark red (2.5YR 3/6) extremely cobbly silty clay loam; moderate very fine subangular blocky structure; friable; many very fine, fine, and medium roots and common coarse roots throughout; many fine and common coarse high continuity interstitial pores; few patchy faint dark red (2.5YR 3/6) clay films on ped faces; few continuous prominent light yellowish brown (10YR 6/4) skeletans on rock fragments; 32 percent chert cobbles and 50 percent chert gravel; very strongly acid.
TYPE LOCATION: Barry County, Missouri; about 4 miles southwest of Eagle Rock or 2,150 feet south and 750 feet east of the northwest corner of sec. 25, T. 21 N., R. 27 W; USGS Eagle Rock quadrangle
RANGE IN CHARACTERISTICS: Rock fragments mainly consist of angular chert, but rounded chert and sandstone fragments may be present. Reaction ranges from very strongly acid to slightly acid. Depth to the 2Bt horizon is 50 to 80 inches.
The A horizon has color value of 2 to 6 and chroma of 1 to 4. Rock fragments range from 35 to 80 percent.
The AB or E horizon (where present) has color value of 4 to 7 and chroma of 2 to 4. They are the very gravelly or extremely gravelly analogues of silt loam or silt, and have 35 to about 80 percent chert fragments.
The Bw horizon has hue of 10YR or 7.5YR, value of 4 to 6, and chroma of 3 to 6. It is the very gravelly, extremely gravelly, very cobbly or extremely cobbly analogues of silt loam, loam or sandy loam.
The 2Bt horizon has hue of 2.5YR to 7.5YR, value of 3 to 8, and chroma of 4 to 8. It is the gravelly to extremely gravelly, or very cobbly to extremely cobbly analogs of silty clay loam, silty clay, or clay.
COMPETING SERIES: This is the Rueter series. Rueter soils are 6 to 40 inches to the top of the argillic horizon.
GEOGRAPHIC SETTING: Hailey soils are on steep side slopes and narrow ridgetops. These soils formed in locally transported colluvial materials and the underlying residuum weathered from cherty limestone mainly in the Elsey-Reeds Spring geologic formation. Slopes range from 5 to 70 percent. The mean annual temperature ranges from 55 to 58 degrees F, and the mean annual precipitation ranges from 40 to 46 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These include the Captina, Nixa, Noark, Rueter, and Tonti series. Captina, Nixa, and Tonti soils are on wide, nearly level to strongly sloping ridgetops and side slopes and have fragipans. Noark soils are on similar topographic positions as the Hailey soils, but Noark soils are clayey-skeletal in the series control section. Rueter soils have an argillic horizon within 40 inches and are on similar landscapes as Hailey.
DRAINAGE AND PERMEABILITY: Excessively drained. Runoff is very low to medium. Permeability is rapid. The saturated hydraulic conductivity is high.
USE AND VEGETATION: Most of the soil is in second growth timber. Some areas are used for growing pasture or hay. Native vegetation is mixed hardwoods.
DISTRIBUTION AND EXTENT: Ozark region (MLRAs 116A and 116B) of Missouri and possibly Oklahoma and Arkansas. It is of moderate extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES ESTABLISHED: Barry County, Missouri, 1989.
REMARKS: This soil was formerly included in the Clarksville series in mapping. These soils were originally described to 60 inches, and classified as Typic Dystrochrepts. The typical pedon was described to 85 inches in 2002, and sampled for lab characterization. Lab data shows that the correct classification is a Typic Paleudalf.
Diagnostic horizons and surface features recognized in this series are:
ochric epipedon - the zone from the surface to a depth of 11 inches (A and AB horizons);
cambic horizon - the zone from about 11 inches to 62 inches (Bw1, Bw2, Bw3, and Bw4 horizons);
argillic horizon - the zone from 62 to 85 inches (2Bt horizon).
ADDITIONAL DATA: The University of Missouri soil characterization laboratory reference number for this pedon is M0200901.