LOCATION HAZEL RUN VATentative Series
TAXONOMIC CLASS: Fine-loamy, mixed, mesic Typic Kandiudults
TYPICAL PEDON: Hazel Run silt loam in a clearcut at 295 feet elevation. (Colors are for moist soil unless otherwise stated)
A-- 0 to 8 inches; brown (10YR 5/3), silt loam, light gray (2.5Y 7/2), dry; moderate medium granular and moderate fine granular structure; friable, nonsticky, nonplastic; few fine roots and few medium roots and common very coarse roots; common fine low continuity tubular and few medium moderate continuity tubular pores; 3 percent rounded metaquartzite stones; very strongly acid; clear wavy boundary.
Bt1-- 8 to 13 inches; yellowish brown (10YR 5/4), silt loam; strong medium subangular blocky structure; friable, slightly sticky, slightly plastic; few fine roots and common medium roots and common coarse roots; common fine low continuity tubular and few medium moderate continuity tubular and common coarse moderate continuity tubular pores; common discontinuous prominent yellowish brown (10YR 5/4) clay films on all faces of peds; 3 percent rounded metaquartzite stones; very strongly acid; clear wavy boundary.
Bt2-- 13 to 22 inches; yellowish brown (10YR 5/6), loam; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; few fine roots and common medium roots; few fine low continuity tubular and common medium moderate continuity tubular pores; common discontinuous prominent yellowish brown (10YR 5/6) clay films on all faces of peds; 3 percent rounded metaquartzite stones; very strongly acid; gradual wavy boundary.
Bt3-- 22 to 35 inches; yellowish red (5YR 5/6), clay loam; common medium faint yellowish red (5YR 4/6) mottles; moderate coarse angular blocky structure; friable, slightly sticky, slightly plastic; few fine roots and few medium roots; few fine low continuity tubular and few medium low continuity tubular pores; common discontinuous prominent yellowish red (5YR 5/6) clay films on all faces of peds and common patchy distinct brownish yellow (10YR 6/6) skeletans on surfaces along root channels; 3 percent rounded metaquartzite stones; very strongly acid; gradual wavy boundary.
Bt4-- 35 to 44 inches; red (2.5YR 5/8), clay loam; moderate coarse angular blocky structure; friable, slightly sticky, slightly plastic; few fine roots; few medium low continuity tubular pores; common discontinuous prominent red (2.5YR 5/8) clay films on all faces of peds and common patchy distinct brownish yellow (10YR 6/6) skeletans on surfaces along root channels; 3 percent rounded metaquartzite stones; very strongly acid; diffuse wavy boundary.
Bt5-- 44 to 60 inches; red (2.5YR 4/6), clay; weak coarse angular blocky structure; friable, slightly sticky, slightly plastic; few fine roots; few fine low continuity tubular pores; common discontinuous prominent red (2.5YR 4/6) clay films on all faces of peds; common coarse prominent irregular light gray (10YR 7/2) iron depletions; 5 percent rounded metaquartzite stones; very strongly acid; diffuse wavy boundary.
Bt6-- 60 to 76 inches; red (2.5YR 4/6), clay; weak medium subangular blocky and weak fine subangular blocky structure; friable, slightly sticky, slightly plastic; few discontinuous prominent red (2.5YR 4/6) clay films on all faces of peds; 10 percent rounded metaquartzite stones; very strongly acid; diffuse wavy boundary.
TYPE LOCATION: Culpeper County, Virginia; from Richardsville, 5.7 miles east-southeast on Route 619, then 1 mile south on logging road. Site is in clearcut, 50 feet east of road. Chancellorsville, Virginia USGS 7.5 Minute Quadrangles
Latitude: 38 degrees, 22 minutes, 27.13 seconds north. Longitude: 77 degrees, 37 minutes, 49.92 seconds west. NAD27.
RANGE IN CHARACTERISTICS: The depth to base of argillic is greater than 60 inches. The particle-size control section averages 18 to 35 percent clay
The A horizon has hue of 7.5YR to 2.5Y, value of 4 or 5, and chroma of 2 to 4. It is sandy loam, fine sandy loam, loam or silt loam. Rock fragment content ranges from 0 to 10 percent. Rock fragments are mainly rounded medium and coarse metaquartzite gravels and cobbles. Reaction is very strongly acid, unless limed.
Some pedons have an Ap horizon that has hue of 7.5YR to 2.5Y, value of 4 or 5, and chroma of 3 or 4. It is loam. Rock fragment content ranges from 0 to 15 percent. Rock fragments are mainly rounded medium and coarse metaquartzite gravels. Reaction is very strongly acid, unless limed.
The E horizon has hue of 2.5Y, value of 6, and chroma of 4. It is loam. Rock fragment content ranges from 0 to 15 percent. Rock fragments are mainly rounded medium and coarse metaquartzite gravels. Reaction is very strongly acid, unless limed.
The Bt horizons have hue of 5YR to 2.5Y, value of 3 to 6, and chroma of 4 to 8. It is sandy loam, loam, silt loam, sandy clay loam, clay loam or silty clay loam in the upper part; clay loam or clay in the lower part. Rock fragment content ranges from 0 to 30 percent, mainly rounded medium and coarse metaquartzite gravels and cobbles. Reaction is very strongly acid. Some pedons may have lower subhorizons with hue of 2.5YR or variegated colors and clay textures.
Some pedons have a BC horizon that has hue of 5YR to 10YR, value of 4 or 5, and chroma of 4 to 6. It is sandy loam or loam. Rock fragment content ranges from 0 to 5 percent, mainly rounded medium and coarse metaquartzite gravels. Reaction is very strongly acid.
Some pedons have a C horizon that has hue of 7.5YR or 10YR, or variegated 2.5YR to 10YR; value of 5; and chroma of 4 to 6, or variegated 3 to 6. It is sandy loam or loam. Reaction is very strongly acid or strongly acid.
COMPETING SERIES: There are no other soil series in this family.
GEOGRAPHIC SETTING: Hazel Run soils formed in old alluvium from crystalline rock and metasediments of the Blue Ridge Anticlinorium; igneous, metamorphic and sedimentary of the Triassic Basin; and schists and phyllites of the northern Piedmont. They are on treads and risers on river terraces and summits, shoulders, and backslopes of side slopes on ridges. Slope gradients range from 0 to 25 percent. Mean annual air temperature 55.7 degrees F., with average winter temperature of 35.4 degrees F and average summer temperature of 74.6 degrees F. Mean annual precipitation ranges from 36.47 to 48.39 inches, frost free days range from 237 to 185 days, and elevation ranges from 110 feet to 900 feet above sea level.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Germanna (tentative), Delanco and Codorous. The well drained Germanna series is on similar landscape positions. The moderately well drained Delanco series is on adjacent low stream terraces. The somewhat poorly drained Codorus series is on adjacent floodplains.
DRAINAGE AND PERMEABILITY: Well drained. The potential for surface runoff potential is medium to high. Permeability is moderate in the upper part and moderately slow to very slow in the lower parts of the series control section. In undisturbed areas the depth to the top of an apparent seasonal high water table is greater than 60 inches in most years.
USE AND VEGETATION: Soils are mainly in woodlands. Small areas have been cleared for cropland, hayland, and pasture. Native vegetation is mixed hardwoods, but much has been harvested and replanted to pine.
DISTRIBUTION AND EXTENT: MLRA 130, 136 (mesic) and 148. The soils are of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Morgantown, West Virginia
SERIES PROPOSED: Culpeper County, Virginia, 2003.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
1) ochric epipedon - from 0 to 8 inches (A horizons)
2) argillic horizon - from 8 to greater than 76 inches (Bt horizons)
3) kandic horizon - from 8 to greater than 76 inches (Bt horizons)