LOCATION OGEECHEE GA+SCEstablished Series
TAXONOMIC CLASS: Fine-loamy, siliceous, subactive, thermic Typic Endoaquults
TYPICAL PEDON: Ogeechee loamy fine sand--forested. (Colors are for moist soil.)
A--0 to 8 inches; very dark gray (10YR 3/1) loamy fine sand; weak fine granular structure; very friable; many fine roots and pores; very strongly acid; clear smooth boundary. (5 to 9 inches thick)
Btg1--8 to 23 inches; dark grayish brown (10YR 4/2) sandy clay loam; weak fine subangular blocky structure; friable; many fine roots and pores; few fine distinct yellowish brown (10YR 5/4) masses of iron accumulation; very strongly acid; gradual wavy boundary.
Btg2--23 to 42 inches; dark grayish brown (10YR 4/2) sandy clay with pockets of gray (10YR 5/1) sandy clay loam; moderate fine subangular blocky structure; firm; friable in sandy clay loam portion; thin patchy clay films on faces of peds; few fine and medium roots; many medium prominent strong brown (7.5YR 5/6) masses of iron accumulation; very strongly acid; gradual wavy boundary.
Btg3--42 to 65 inches; grayish brown (10YR 5/2) sandy clay loam; weak coarse subangular blocky structure; firm; few medium and large roots; common medium prominent light olive brown (2.5Y 5/4) and common medium distinct strong brown (7.5YR 5/6) masses of iron accumulation; very strongly acid; gradual wavy boundary. (Combined thickness of the Btg horizons ranges from 20 to 60 inches)
Cg--65 to 80 inches; grayish brown (10YR 5/2) clay loam; massive; firm; few medium roots; few medium prominent gray (5Y 5/1) and few medium distinct light gray (10YR 7/2) iron depletions, and few medium distinct yellowish brown (10YR 5/6) masses of iron accumulation; very strongly acid.
TYPE LOCATION: Bryan County, Georgia; 1.2 miles north of Liberty-Bryan County line on U.S. Highway 17; 1.2 miles east on Jones Loop Road; 1.2 miles south on Mt. Hope Road; 100 yards west of end of road and 50 feet west of canal. (USGS Quadrangle, Limeric SE., Georgia (1958); lat. 31 degrees 52 minutes 05 seconds N., and long. 81 degrees 22 minutes 30 seconds W.)
RANGE IN CHARACTERISTICS: Solum thickness ranges from 40 to 80 inches. Reaction of the soil is extremely acid to strongly acid, except where limed and some pedons may have moderately acid reaction in the lower B and C horizons. Some pedons may contain few fine flakes of mica throughout.
The A horizon has hue of 2.5Y or 10YR, value of 2 through 4, and chroma of 1 or 2. It is loam, fine sandy loam, sandy loam, loamy fine sand, loamy sand, or loamy coarse sand.
The Eg horizon, where present, has hue of 2.5Y or 10YR, value of 4 through 7, and chroma of 1 or 2. The range in texture is the same as the A horizon.
The BEg horizon, where present, has hue of 2.5Y or 10YR, value of 4 through 7, and chroma of 1 or 2, or the horizon is neutral with value of 4 through 7. Masses of iron accumulation are few to many in shades of yellow and brown. It is sandy loam or fine sandy loam.
The Btg horizon has hue of 2.5Y or 10YR, value of 4 through 7, and chroma of 1 or 2, or the horizon is neutral with value of 4 through 7. Masses of iron accumulation are common or many in shades of yellow, brown, or red. Some pedons may have a lower Bt sub horizon without dominant matrix hue and have masses of iron accumulation in shades of yellow, brown or red and iron depletions. It is commonly clay loam or sandy clay loam, but some pedons have subhorizons of clay or sandy clay. The upper 20 inches of the horizon has an average clay content of 20 to 35 percent, and less than 20 percent silt. Some pedons may have pockets of gray coarser textured material 2 to 6 inches in diameter.
The BCg horizon, where present, has colors the same as the Btg horizon. It is sandy loam or sandy clay loam.
The Cg horizon, where present, has hue of 5Y, 2.5Y, or 10YR, value of 5 through 8, and chroma of 1 or 2 or the horizon is neutral with value of 5 through 8. It ranges from sand to clay loam and commonly is stratified with sand, loamy sand, sandy clay loam, or clay.
COMPETING SERIES: (This section not updated this date; 6/16/97) These are the Gourdin and Myatt series of the same family and the Augusta, Coxville, Dunbar, Grady, Lumbee, Lynchburg, Pooler, Rains, Roanoke, Wahee, Worsham, and Yemassee series of closely related families. Augusta soils have mixed mineralogy. Coxville, Dunbar, Grady, Pooler, Roanoke, Wahee, and Worsham soils have more than 35 percent clay in the control section. Gourdin soils have slow permeability. Myatt soils have more than 20 percent silt in the control section. Lynchburg and Rains soils lack a 20 percent clay decrease within 60 inches of the surface. Lumbee soils have sola 40 inches thick or less. Yemassee soils have higher chroma between the base of the A or Ap horizons and a depth of 30 inches.
GEOGRAPHIC SETTING: Ogeechee soils are on nearly level flats, drainageways, and slight depressions on the Lower Coastal Plain. Slopes are 0 to 2 percent. Elevation is 10 to 50 feet. The mean annual temperature is 62 to 70 degrees F. and mean annual precipitation is 45 to 55 inches.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the competing Lumbee, Pooler, and Wahee series, and the Alapaha, Bayboro, Cape Fear, Pelham, and Portsmouth series. Alapaha and Pelham soils have loamy sand A horizons 20 to 40 inches thick and in addition Alapaha soils are found on slightly higher elevations. Bayboro, Cape Fear, and Portsmouth soils have umbric epipedons.
DRAINAGE AND PERMEABILITY: Ogeechee soils are poorly drained; slow runoff; moderate permeability. Depth to water table is from +1.0 to 1.0 foot.
USE AND VEGETATION: Most of the soil is in forest of mainly loblolly pine and hardwoods. Cleared areas are used for growing corn, soybeans, hay, and pasture.
DISTRIBUTION AND EXTENT: Widely distributed over the Lower Coastal Plain of Georgia, Alabama, Florida, North Carolina, South Carolina, and possibly Virginia. The series is extensive.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Bryan County, Georgia; 1969.
REMARKS: The type location was visited in 8/93 and profile redescribed to 80 inches to answer endo vs epi saturation question.
Diagnostic horizons and features recognized in this pedon are:
Ochric epipedon - the zone from the surface to approximately 8 inches (A horizon)
Argillic horizon - the zone from approximately 8 to 65 inches (Btg1, Btg2, and Btg3 horizons).
TABULAR SERIES DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation GA0036 OGEECHEE 0- 2 62- 70 240-285 45- 55 10- 50 GA0081 OGEECHEE 0- 2 62- 70 240-285 45- 55 10- 50
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness GA0036 NONE COMMON 0-1.0 APPARENT DEC-MAY 60-60 GA0081 NONE - APPARENT - 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC- GA0036 0- 8 LFS LS LCOS 0- 0 95-100 5-10 - GA0036 0- 8 SL FSL 0- 0 95-100 5-10 - GA0036 8-23 SCL CL 0- 0 95-100 20-35 - GA0036 23-42 SC SCL C 0- 0 95-100 30-45 - GA0036 42-80 SCL CL SL 0- 0 90-100 15-30 - GA0081 0- 8 LFS LS LCOS 0- 0 95-100 5-10 - GA0081 0- 8 SL FSL 0- 0 95-100 5-10 - GA0081 8-23 SCL CL 0- 0 95-100 20-35 - GA0081 23-42 SC SCL C 0- 0 95-100 30-45 - GA0081 42-60 SCL SL 0- 0 90-100 15-30 -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll GA0036 0- 8 4.5- 5.5 1.-2. 0- 0 2.0- 6.0 LOW GA0036 0- 8 4.5- 5.5 1.-2. 0- 0 0.6- 2.0 LOW GA0036 8-23 4.5- 5.5 - 0- 0 0.6- 2.0 LOW GA0036 23-42 4.5- 5.5 - 0- 0 0.6- 2.0 LOW GA0036 42-80 4.5- 6.0 - 0- 0 0.6- 2.0 LOW GA0081 0- 8 4.5- 5.5 1.-2. 0- 0 2.0- 6.0 LOW GA0081 0- 8 4.5- 5.5 1.-2. 0- 0 0.6- 2.0 LOW GA0081 8-23 4.5- 5.5 - 0- 0 0.2- 0.6 LOW GA0081 23-42 4.5- 5.5 - 0- 0 0.6- 2.0 LOW GA0081 42-60 4.5- 5.5 - 0- 0 0.6- 2.0 LOW