LOCATION TODDSTAV VAEstablished Series
TAXONOMIC CLASS: Fine-silty, mixed, active, mesic Typic Endoaquults
TYPICAL PEDON: Toddstav silt loam - on a 2 percent concave slope along drainageway in a mixed hardwood and pine forest. (Colors are for moist soil.)
A--0 to 3 inches; very dark grayish brown (10YR 3/2) silt loam; moderate fine granular structure; friable; many fine and medium roots; extremely acid; clear smooth boundary. (0 to 4 inches thick)
Eg--3 to 7 inches; gray (10YR 6/1) silt loam; moderate fine granular structure; friable; many fine and medium roots; few fine distinct brownish yellow (10YR 6/6) masses of iron accumulation; extremely acid; clear smooth boundary. (0 to 10 inches thick)
Btg1--7 to 13 inches; light gray (10YR 7/1) silt loam; weak fine subangular blocky structure; friable, slightly plastic, slightly sticky; many fine roots; common thin clay films and silt coatings on faces of peds; common very fine mica flakes; common medium and fine distinct brownish yellow (10YR 6/6) masses of iron accumulations; very strongly acid; clear smooth boundary.
Btg2--13 to 45 inches; gray (10YR 5/1) loam; moderate fine and medium subangular blocky structure; friable, slightly sticky, slightly plastic; common fine roots; many thin patchy clay films and silt coatings on faces of peds; common very fine mica flakes; 1 percent angular quartz pebbles; many medium distinct brownish yellow (10YR 6/6) masses of iron accumulations; very strongly acid; clear smooth boundary.
Btg3--45 to 56 inches; light gray (10YR 7/2) silty clay loam; moderate coarse and medium prismatic structure; firm, slightly sticky, slightly plastic; few fine roots; continuous thin clay films and silt coatings on faces of peds; 2 percent angular quartz pebbles; many very fine mica flakes; few medium distinct olive yellow (2.5Y 6/6) masses of iron accumulations; very strongly acid; gradual smooth boundary. (Combined thickness of the Btg horizon is 10 to 52 inches.)
2Btg--56 to 66 inches; light gray (10YR 7/2) loam; weak coarse subangular blocky structure; friable; common thin clay films on faces of peds; 1 percent angular quartz pebbles; 10 percent soft highly-weathered schist fragments; many very fine mica flakes; very strongly acid; gradual smooth boundary. (0 to 10 inches thick)
2Cg--66 to 72 inches; gray (10YR 5/1) loam; massive; very friable; many very fine mica flakes; very strongly acid.
TYPE LOCATION: Spotsylvania County, Virginia; 125 meters south of Porters, at the junction of State Routes 612 and 606; 450 meters east of State Route 612.
RANGE IN CHARACTERISTICS: Solum thickness ranges from 40 to more than 60 inches. Depth to bedrock is greater than 60 inches. Angular and subrounded quartz pebbles range from 0 to 10 percent in the solum. Fine and very fine mica flakes are common to many in the solum. It is extremely acid through strongly acid unless limed.
The A horizon has hue of 10YR or 2.5Y, value of 2 through 7, and chroma of 0 through 2. It is loam or silt loam.
The Eg horizon has hue of 10YR or 2.5Y, value 4 to 7, and chroma of 0 to 2. It is loam or silt loam.
The Btg horizon has hue of 10YR or 2.5Y, value of 4 through 7, and chroma of 0 through 2 with masses of iron accumualtions of higher chroma. It is loam, fine sandy loam, silt loam, clay loam, or silty clay loam. Fine sandy loam is restricted to the lower part of the Btg horizon.
The 2C horizon color is variable and commonly contains shades of gray and yellow. In some pedons, the 2C horizon lacks a dominant color. It is loam, silt loam, or sandy loam.
COMPETING SERIES: There are no other known soils in this family. Similar soils are the Amy and Othello series. The Amy soils have more than 90 percent quartz in the sand fraction (siliceous mineralogy). Othello soils have solum 24 to 40 inches thick.
GEOGRAPHIC SETTING: The Toddstav soils are along poorly defined drainageways in the mesic Piedmont Province. Slopes are commonly concave and range in gradient from 0 to 7 percent. The soils formed in silty colluvial and alluvial materials derived from mica schist.
GEOGRAPHICALLY ASSOCIATED SOILS: These are the Brockroad, Catharpin, LaRoque, Margo. All of these associated soils are on higher landscape positions and are not as wet as the Toddstav soils.
DRAINAGE AND PERMEABILITY: Poorly drained. Runoff is slow to ponded. Permeability is moderate.
USE AND VEGETATION: Most Toddstav soils are in mixed hardwood and pine forest. Native vegetation is hardwood forest.
DISTRIBUTION AND EXTENT: The Toddstav soils are not extensive. They are thought to occur on the southern mesic Piedmont Province of Virginia and North Carolina.
MLRA SOIL SURVEY REGIONAL OFFICE (MO) RESPONSIBLE: Raleigh, North Carolina
SERIES ESTABLISHED: Spotsylvania County, Virginia, 1980.
REMARKS:
ADDITIONAL DATA:
SOI-5 Soil Name Slope Airtemp FrFr/Seas Precip Elevation
VA0149 TODDSTAV 0- 7 59- 63 180-200 35- 45 250- 800
SOI-5 FloodL FloodH Watertable Kind Months Bedrock Hardness
VA0149 FREQ - APPARENT - 60-60
SOI-5 Depth Texture 3-Inch No-10 Clay% -CEC-
VA0149 0- 7 L SIL 0- 0 95-100 7-20 -
VA0149 7-55 L SIL CL 0- 0 95-100 18-35 -
VA0149 55-70 L SIL SL 0- 0 95-100 7-27 -
SOI-5 Depth -pH- O.M. Salin Permeab Shnk-Swll
VA0149 0- 7 3.6- 5.5 1.-3. 0- 0 0.6- 2.0 LOW
VA0149 7-55 3.6- 5.5 .5-1. 0- 0 0.06- 0.6 MODERATE
VA0149 55-70 3.6- 5.5 .5-1. 0- 0 0.6- 2.0 LOW