LOCATION POINDEXTER VA+GA NC SCEstablished Series
TAXONOMIC CLASS: Fine-loamy, mixed, active, thermic Typic Hapludalfs
TYPICAL PEDON: Poindexter loam, on an 8 percent slope, in a wooded area. (Colors are for moist soil.)
A--0 to 4 inches; light yellowish brown (2.5Y 6/4) loam; weak fine granular structure; very friable; many fine and medium roots; many fine and medium pores; very strongly acid; clear smooth boundary. (0 to 10 inches thick)
E--4 to 12 inches; light yellowish brown (10YR 6/4) fine sandy loam; weak fine granular structure; very friable; few fine and medium roots; many fine and medium pores; very strongly acid; gradual wavy boundary. (0 to 8 inches thick)
Bt--12 to 18 inches, yellow (10YR 7/8) sandy clay loam; moderate medium subangular blocky structure; friable, slightly sticky, slightly plastic; few distinct clay films on faces of peds; moderately acid; gradual wavy boundary. (4 to 22 inches thick)
BC--18 to 23 inches; mottled strong brown (7.5YR 5/6), yellowish red (5YR 5/6), and white (5YR 8/1) sandy clay loam; weak medium subangular blocky structure; friable, slightly sticky, slightly plastic; slightly acid; gradual wavy boundary. (2 to 20 inches thick)
Cr--23 to 43 inches; weathered, moderately fractured diabase.
R--43 inches; unweathered, slightly fractured diabase.
TYPE LOCATION: Randolph County, North Carolina; 0.8 mile northwest of intersection of Secondary Road 1571 and Secondary Road 1004, 0.4 mile south of intersection of Secondary Road 1004 and farm road, 250 feet east of farm road, in woods; Glenola USGS topographic quadrangle; lat. 35 dergrees 52 minutes 26 seconds N. and long. 79 degrees 56 minutes 37 seconds W.
RANGE IN CHARACTERISTICS: The thickness of the solum ranges from 14 to 40 inches. Depth to weathered bedrock ranges from 20 to 40 inches and depth to hard rock ranges from 40 to 60 inches or more. Rock fragments range from 0 to 35 percent throughout. Rock fragments usually consist of quartz in the upper part of the solum and quartz or other acid or basic rocks in the lower part of the solum. Content of mica ranges from none to many flakes and usually increases with depth. Reaction ranges from very strongly acid through neutral throughout unless limed.
The A or Ap horizon has hue of 7.5YR through 2.5Y, value of 3 to 6, and chroma of 2 to 4. It is sandy loam, fine sandy loam, loam, or silt loam. Eroded areas and some Ap horizons also range to clay loam or sandy clay loam.
The E horizon has hue of 7.5YR through 2.5Y, value of 4 to 6, and chroma of 3 to 6. It is sandy loam, fine sandy loam, loam, or silt loam.
The BA, BE, and EB horizons, where present, have hue of 5YR through 2.5Y, value of 4 through 6, and chroma of 4 to 8. They are sandy loam, fine sandy loam, loam, or silt loam.
The Bt horizon has hue of 5YR through 2.5Y, value of 4 to 6, and chroma of 4 to 8. It is loam, silt loam, sandy clay loam, or clay loam. Some pedons have thin continuous or discontinuous lenses or bodies of clay in the Bt horizon.
The BC horizon has hue of 5YR through 2.5Y, value of 4 to 6, and chroma of 4 to 8. It is sandy loam, fine sandy loam, loam, or silt loam.
The C horizon, where present, is mottled in shades of brown, yellow, black, red, green, olive, white, and gray. It is sandy loam, fine sandy loam, silt loam, sandy clay loam, or silty clay loam saprolite.
The Cr horizon is weathered bedrock that is moderately to very highly fractured.
The R horizon is unweathered bedrock that is very slightly to moderately fractured.
COMPETING SERIES: These are the Karma, Mocksville, and Teksob series in the same family and the Bremo, Lewisberry, Louisburg, Relay, Saluda, Sekil, Siloam, Spriggs, Wilkes, and Zion series in related families. Karma, Mocksville and Teksob soils are very deep and, in addition, Karma soils formed on stream terraces in MLRAs 133B, 118A, and 188B and Teksob soils formed in loamy alluvium in MLRA 131. Bremo soils are mesic, do not have an argillic horizon, and have a depth to hard bedrock of 20 to 40 inches. Lewisberry, Relay, and Saluda soils are mesic. Louisburg soils have a cambic horizon and less than 35 percent base saturation. Sekil soils have a coarse-loamy particle size control section and a depth to hard bedrock of 20 to 40 inches. Siloam and Wilkes soils have a paralithic contact at depths shallower than 20 inches. In addition, Shiloam soils are mesic. Spriggs soils are mesic. Zion soils are mesic, have a clayey subsoil, and a depth to hard bedrock of 20 to 40 inches.
GEOGRAPHIC SETTING: The Poindexter soils are on gently sloping to very steep dissected Piedmont uplands. Slopes are dominantly convex and 8 to 25 percent, but they range from 2 to 60 percent. The Poindexter soils formed in materials weathered from basic rocks or a mixture of acid and basic rocks. The climate is temperate and humid. Mean annual temperature is above 57 degrees F. Mean annual precipitation ranges from 38 to 48 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Enon, Helena, Iredell, Mecklenburg, Pittsboro, and Wynott soils. All of these soils have more clay in the Bt horizon than Poindexter soils.
DRAINAGE AND PERMEABILITY: Well drained; medium to very rapid runoff; moderate permeability.
USE AND VEGETATION: Most of these soils are either in pasture or are forested. A minor acreage is in cultivation. Crops are corn, small grain, and hay. Native vegetation consists of southern red oak, white oak, scarlet oak, hickory, redbud, dogwood, red cedar, shortleaf pine, Virginia pine, and loblolly pine.
DISTRIBUTION AND EXTENT: Georgia, North Carolina, South Carolina, and Virginia. The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Louisa County, Virginia, 1972.
REMARKS: The Poindexter series was formerly included in the Bremo series. Diagnostic horizons and features recognized in this pedon are:
1. Ochric epipedon: the zone from 0 to 12 inches (A and E horizon).
2. Argillic horizon: the zone from 12 to 18 inches (the Bt horizon).
MLRA = 136
REVISED = 9/5/97 RLV. 5/28/02 DTA.
ADDITIONAL DATA: Chemical data for samples from the typifying pedon is available from the V.P.I. laboratory (identified as Wilkes, fine-loamy, Variant-1971).
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elev. VA0044 POINDEXTER 2-60 57-62 165-200 38-48 250-900 VA0326 POINDEXTER 2-60 57-62 165-200 38-48 250-900SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness VA0044 NONE 6.0-6.0 - 20-40 SOFT VA0326 NONE 6.0-6.0 - 20-40 SOFT
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- VA0044 0-12 SL FSL 0-0 85-100 5-18 - VA0044 0-12 L SIL 0-0 85-100 10-25 - VA0044 0-12 CL SCL 0-0 85-100 27-35 - VA0044 12-18 CL SCL GR-L 0-0 50-100 20-35 - VA0044 18-23 SICL L GR-SL 0-0 50-100 10-35 - VA0044 23-43 WB - - - - VA0044 43 UWB - - - - VA0326 0-12 GR-SL GR-FSL 0-0 50-75 5-18 - VA0326 0-12 GR GR-SIL 0-0 40-75 10-25 - VA0326 0-12 GR-CL GR-SCL 0-0 50-75 27-35 - VA0326 12-18 CL SCL GR-L 0-0 50-100 20-35 - VA0326 18-23 SICL L GR-SL 0-0 50-100 10-35 - VA0326 23-43 WB - - - - VA0326 43 UWB - - - -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll VA0044 0-12 5.1-7.3 .5-2. 0-0 2.0-6.0 LOW VA0044 0-12 5.1-7.3 .5-2. 0-0 2.0-6.0 LOW VA0044 0-12 5.1-7.3 .5-1. 0-0 0.6-2.0 LOW VA0044 12-18 5.1-7.3 0.-.5 0-0 0.6-2.0 LOW VA0044 18-23 5.1-7.3 0.-.5 0-0 0.6-6.0 LOW VA0044 23-43 - - - 0.0-0.06 VA0044 43 - - - 0.0-0.06 VA0326 0-12 5.1-7.3 .5-2. 0-0 2.0-6.0 LOW VA0326 0-12 5.1-7.3 .5-2. 0-0 2.0-6.0 LOW VA0326 0-12 5.1-7.3 .5-1. 0-0 0.6-2.0 LOW VA0326 12-18 5.1-7.3 0.-.5 0-0 0.6-2.0 LOW VA0326 18-23 5.1-7.3 0.-.5 0-0 0.6-6.0 LOW VA0326 23-43 - - - 0.0-0.06 VA0326 43 - - - 0.0-0.06