LOCATION INVERSHIEL NC+VA
Established Series
Rev. WES:REH:CWS
11/2021
INVERSHIEL SERIES
The Invershiel series consists of moderately well drained, slowly permeable soils that formed in moderately thick beds of clayey marine sediments over marl. These soils are on nearly level Coastal Plain uplands and stream terraces. The seasonal high water table is within 12 to 30 inches of the surface for 1 to 4 months annually. Slope ranges from 0 to 4 percent.
TAXONOMIC CLASS: Fine, smectitic, thermic Albaquic Hapludalfs
TYPICAL PEDON: Invershiel fine sandy loam. (Colors are for moist soil unless otherwise stated.)
Ap--0 to 4 inches; brown (10YR 5/3) fine sandy loam; weak medium granular structure; very friable; common medium and fine roots; strongly acid; abrupt smooth boundary. (4 to 12 inches thick)
E--4 to 8 inches; light gray (10YR 7/2) sandy loam; few medium faint brown (10YR 5/3) mottles; weak medium granular structure; very friable; few fine roots; slightly acid; clear wavy boundary. (0 to 10 inches thick)
Bt1--8 to 15 inches; yellowish brown (10YR 5/6) clay loam; moderate fine angular blocky structure; firm, plastic, sticky; few thin clay films on faces of peds; moderately acid; gradual wavy boundary. (4 to 8 inches thick)
Bt2--15 to 23 inches; yellowish brown (10YR 5/6) clay loam; few fine prominent red (2.5YR 4/8) and common medium distinct gray (10YR 6/1) mottles; moderate fine angular blocky structure; firm, plastic, sticky; few thin clay films on faces of peds; moderately acid; gradual wavy boundary. (4 to 10 inches thick)
2Btg--23 to 30 inches; mottled gray (N 6/), yellowish brown (10YR 5/4), and strong brown (7.5YR 5/6) clay with pockets of marl; massive; very firm, plastic, very sticky; common fine and medium; slightly acid; clear wavy boundary. (0 to 8 inches thick)
3C--30 to 65 inches; light gray (10YR 7/2) grainy marl; few medium distinct brownish yellow (10YR 6/6) mottles; massive; soft; many grains of sand and black concretions; moderately alkaline.
TYPE LOCATION: Pender County, North Carolina; 2.2 miles southeast of Rocky Point; 0.95 mile west of intersection of SR 1518 and SR 1517 on SR 1517, then 30 feet south of road.
RANGE IN CHARACTERISTICS: Thickness of the solum and depth to soft marl ranges from 20 to 40 inches. Reaction ranges from very strongly acid to slightly acid in the A and E horizons, unless limed, medium acid to mildly alkaline in the Bt horizon, and neutral to moderately alkaline in the C horizon.
The A or Ap horizon has hues of 7.5YR, 10YR, or 2.5Y, values of 3 to 5, and chromas of 2 to 4. It is loamy sand, loamy fine sand, sandy loam, or fine sandy loam.
The upper part of the Bt horizon has hues of 7.5YR to 2.5Y, values of 4 to 6, and chromas of 4 to 8. Some pedons are mottled in this upper part with hue of 2.5YR to 10YR, value of 4 to 6, and chroma of 4 to 8. The lower part has matrix hue of 7.5YR to 2.5Y, value of 5 or 6, and chroma of 2 to 8. The lower part is mottled in shades of red, yellow, brown, or gray. The Bt horizon is sandy clay loam, clay loam, sandy clay, or clay, and averages between 35 and 50 percent clay in the particle size control section. Some pedons have few to common manganese concretions 2 to 25 millimeters in diameter in the lower part.
The 2Btg horizon has hue of 7.5YR or 10YR, value of 4 or 6, and chroma of 4 to 8, hue of 5Y, 5GY, or 10YR, value of 5 to 7, and chroma of 1 or 2. Mottles are in shades of yellow, brown, or gray. It is sandy clay loam, clay loam, or clay. Some pedons have strata of loamy or sandy loam, pockets of marl, or few to many manganese concretions.
The E horizon has hue of 10YR, value of 4 to 7, and chroma of 2 to 8. Some pedons have mottles in shades of brown or gray. A few pedons have few small to large reddish brown concretions. Texture is loamy sand, loamy fine sand, sandy loam, or fine sandy loam.
The 2C horizon is light colored marl. In some pedons, have strata of loamy clayey sediments, and shells.
COMPETING SERIES: The
Orange series is the only one in the same family. Orange soils contain more than 30 percent silt in the control section and are underlain by fine grained mafic rocks. Those soils in closely related families are the
Archer,
Bushnell,
Cadeville, and
Wister series. Archer soils lack chroma 2 mottles in the upper 10 inches of the Bt horizon and they have better drainage. Bushnell soils are hyperthermic. Cadeville and Wister soils have sola thicker than 40 inches and are not underlain with marl
GEOGRAPHIC SETTING: Invershiel soils are on level to gently undulating lower Coastal Plain terraces. Slopes are 0 to 4 percent. These soils formed in moderately thick beds of clayey marine sediments over marl. Near the type location, the mean annual temperature is 64 degrees F., and the mean annual precipitation is 50 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the
Grifton,
Meggett, and
Pender series. Grifton and Meggett soils are poorly drained and are on the lower parts of the landscape. Pender soils have fine-loamy textural control sections.
DRAINAGE AND PERMEABILITY: Moderately well drained; slow to medium runoff; slow internal drainage; slow permeability.
USE AND VEGETATION: Most of the soil is in forest of loblolly pine, longleaf pine, oaks, sweetgum, blackgum, beech, hickory, and red maple. Common understory species are flowering dogwood, southern bayberry, American holly, common persimmon, and greenbrier. Cleared areas are used for growing corn, soybeans, tobacco, truck crops, and small grains.
DISTRIBUTION AND EXTENT: Lower Coastal Plain of North Carolina.
The series is of small extent.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Pender County, North Carolina; 1986. Name is from a well known farm in the area.
REMARKS: Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface of the soil to a depth of 8 inches (A and E horizons)
Argillic horizon - the zone from a depth of 8 inches to a depth of 23 inches (Bt1 & Bt2 horizons)
Abrupt textural change - at a depth of 8 inches (base of the E horizon)
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation
NC0125 INVERSHIEL 0- 4 60- 70 185-240 45- 55 30- 100
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness
NC0125 NONE 1.0-2.5 APPARENT DEC-MAR 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC-
NC0125 0- 8 LS LFS 0- 0 100-100 3-10 3- 10
NC0125 0- 8 SL FSL 0- 0 100-100 5-20 4- 20
NC0125 8-30 CL SC C 0- 5 85-100 35-50 20- 40
NC0125 30-65 MARL - - - -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll
NC0125 0- 8 4.5- 6.5 .5-2. 0- 0 2.0- 6.0 LOW
NC0125 0- 8 4.5- 6.5 .5-2. 0- 0 0.6- 2.0 LOW
NC0125 8-30 5.6- 8.4 0.-.5 0- 0 0.06- 0.2 HIGH
NC0125 30-65 - - - -
National Cooperative Soil Survey
U.S.A.