LOCATION PINEYWOODS VA

Established Series
Rev. SKT-WJE-MHC
06/2024

PINEYWOODS SERIES

The Pineywoods series consists of deep, poorly drained, slowly permeable soils on uplands in the Northern Piedmont Province. They formed in residuum of anorthosite. Slopes range from 0 to 7 percent. Mean annual precipitation is about 40 inches. Mean annual air temperature is about 55 degrees F.

TAXONOMIC CLASS: Clayey over loamy, kaolinitic, mesic Kandic Albaquults

TYPICAL PEDON: Pineywoods loam - on a 1 percent slope in a mixed pine and hardwood forest (cutover). (Colors are for moist soil.)

A--0 to 1 inch; very dark gray (10YR 4/1) silt loam; weak fine granular structure; friable, slightly sticky, slightly plastic; many fine, medium, and coarse roots; 5 percent blue quartz gravel; extremely acid; abrupt smooth boundary. (0 to 4 inches thick.)

Eg--1 to 6 inches; light brownish gray (2.5Y 6/2) silt loam; common medium distinct brownish yellow (10YR 6/8) mottles; weak fine granular structure; friable, slightly sticky, slightly plastic; common fine and medium roots; 5 percent blue quartz gravel; extremely acid; clear smooth boundary. (0 to 8 inches thick)

Btg1--6 to 15 inches; light brownish gray (2.5Y 6/2) silty clay; common medium distinct brownish yellow (10YR 6/8) mottles; moderate fine and medium subangular blocky structure; firm, sticky, plastic; common fine and medium roots; many distinct clay films on faces of peds; 2 percent blue quartz gravel; extremely acid; clear smooth boundary.

Btg2--15 to 22 inches; light brownish gray (2.5Y 6/2) clay; many coarse distinct pale brown (10YR 6/3) mottles; weak medium prismatic structure parting to moderate fine and medium angular blocky; firm, sticky, plastic; few fine and medium roots; many distinct clay films on faces of peds; strongly acid; abrupt irregular boundary. (Combined thickness of the Btg horizon is 15 to 35 inches.)

Cg--22 to 41 inches; white (10YR 8/1) loam saprolite; many medium distinct light gray (10YR 6/1) and reddish yellow (7.5YR 6/8) mottles; massive; firm, slightly sticky, slightly plastic; few fine roots; common clay seams; 5 percent blue quartz gravel; strongly acid; clear smooth boundary. (10 to 30 inches thick.)

Cr--41 inches; light gray (N 7/0) soft anorthosite that crushes to clay loam.

TYPE LOCATION: Nelson County, Virginia; about 2300 southeast 146 degrees of the intersection of Highways VA-151 and VA-676 and 7000 feet north 14 degrees of the intersection of Highways VA-674 and VA-56, at Rose Union Church.

RANGE IN CHARACTERISTICS: Solum thickness ranges from 20 to 40 inches. Depth to soft bedrock ranges from 40 to 60 inches; depth to hard bedrock is more than 60 inches. Angular rock fragments (2 to 10 mm) of blue quartz and anorthosite range from 0 to 35 percent throughout the soil. Reaction ranges from extremely acid through slightly acid in the A and Eg horizons, from very strongly acid through strongly acid in the Btg horizon, and from strongly acid through slightly acid in the Cg horizon.

The A horizon has hue of 10YR or 2.5Y, value of 2 to 4, and chroma of 1 to 4. It is fine sandy loam, loam, or silt loam in the fine earth fraction.

The Eg horizon has hue of 10YR or 2.5Y, value of 4 to 7, and chroma of 1 or 2. It is fine sandy loam, loam, or silt loam in the fine earth fraction.

The Btg horizon has hue of 10YR through 5Y or is neutral, value of 5 to 8, and chroma of 0 to 2. It is clay, silty clay, clay loam, or silty clay loam in the fine earth fraction.

The Cg horizon is saprolite with hue of 10YR through 5Y or is neutral, value of 5 to 8, and chroma of 0 to 2. It is sandy loam, loam, silt loam, silty clay loam, or clay loam in the fine earth fraction.

The Cr horizon is neutral or has hue of 2.5Y or 5Y, value of 7 or 8, and chroma of 1. It is soft anorthosite bedrock that crushes to sandy loam, loam, silt loam, silty clay loam, or clay loam.

COMPETING SERIES: These are no known series in this family.

GEOGRAPHIC SETTING: Pineywoods soils are on flat ridges and sideslopes in the Northern Piedmont province. Slope gradients range from 0 to 7 percent. These soils developed in residuum of anorthosite. Mean annual precipitation ranges from 36 to 44 inches and mean annual soil temperature ranges from 52 to 57 degrees F.

GEOGRAPHICALLY ASSOCIATED SOILS: These include the Colleen and Sketerville series. Colleen soils are well drained and Sketerville soils are moderately well drained.

DRAINAGE AND PERMEABILITY: Poorly drained. Permeability is slow. Runoff is slow.

USE AND VEGETATION: These soils are used mainly for woodland.

DISTRIBUTION AND EXTENT: Northern Piedmont upland in Virginia. The series is of small extent.

SOIL SURVEY REGIONAL OFFICE (SSRO) RESPONSIBLE: AUBURN, ALABAMA

SERIES PROPOSED: Nelson County, Virginia, 1987.

REMARKS: Diagnostic horizon and features recognized in this pedon are: 1. Ochric epipedon - the zone from 0 to 6 inches (A and Eg horizons). 2. Albic horizon - the zone from 1 to 6 inches (Eg horizon).
3. Argillic horizon - the zone from 6 to 22 inches (Btg horizon). 3. Paralithic horizon - at 41 inches (Cr horizon).

SIR=VA0294
MLRA=148
REVISED=1/4/92, MHC

ADDITIONAL DATA: Ranges for morphology, chemistry, particle-size distribution, and mineralogy are based on 7 pedons.

National Cooperative Soil Survey
U.S.A.