Adaton Series

• Depth class: Very deep
• Drainage class: Poorly drained
• Permeability: Slow
• Parent material: Loamy sediments
• Landscape: Coastal Plain uplands
• Landform: Stream terraces
• Landform position: Flat to slightly concave slopes on nearly level surfaces
• Slope: 0 to 2 percent
• Taxonomic class: Fine-silty, mixed, active, thermic Typic Endoaqualfs

Adaton soils are commonly associated on the landscape with Freest, Ichusa, Stough, and Urbo soils. The moderately well drained Freest soils are on summits and side slopes. The somewhat poorly drained, clayey Ichusa soils are on side slopes. The somewhat poorly drained Stough soils are in the slightly higher, more convex positions on stream terraces. The somewhat poorly drained, clayey Urbo soils are on flood plains.

Typical Pedon

Adaton silt loam, 0 to 2 percent slopes; in a wooded area about 6.5 miles north of Pineville; 1,650 feet north and 4,070 feet east of the southwest corner of sec. 12, T. 4 N., R. 9 E; USGS Clear Creek topographic quadrangle; lat. 32 degrees 11 minutes 56 seconds N. and long. 89 degrees 19 minutes 31 seconds W.

• A1—0 to 2 inches; dark grayish brown (10YR 4/2) silt loam; weak fine granular structure; very friable; many fine and medium roots; very strongly acid; clear smooth boundary.
• A2—2 to 6 inches; brown (10YR 5/3) silt loam; weak medium subangular blocky structure; friable; common fine and medium roots; common fine faint pale brown (10YR 6/3) iron depletions; common fine distinct yellowish brown (10YR 5/6) masses of iron accumulation; very strongly acid; clear wavy boundary.
• Btg1—6 to 28 inches; light brownish gray (2.5Y 6/2) silty clay loam; moderate medium subangular blocky structure; firm; common fine roots; few distinct clay films on faces of peds; common medium distinct yellowish brown (10YR 5/6) masses of iron accumulation; very strongly acid; gradual wavy boundary.
• Btg2—28 to 40 inches; grayish brown (2.5Y 5/2) silty clay; moderate medium subangular blocky structure; firm; few fine roots; common distinct clay films on faces of peds; common fine distinct white (10YR 8/1) clay depletions on vertical faces of peds; common medium prominent strong brown (7.5YR 5/6) and yellowish brown (10YR 5/8) masses of iron accumulation; very strongly acid; gradual wavy boundary.
• Btg3—40 to 60 inches; light brownish gray (2.5Y 6/2) silt loam; weak medium subangular blocky structure; firm; common distinct clay films on faces of peds; common fine faint white (10YR 8/1) clay depletions on vertical faces of peds; many medium prominent strong brown (7.5YR 5/8) and brownish yellow (10YR 6/8) masses of iron accumulation; very strongly acid; gradual wavy boundary.
• Btg4—60 to 72 inches; light brownish gray (2.5Y 6/2) silty clay loam; weak medium subangular blocky structure; firm; common distinct clay films on faces of peds; common fine faint white (10YR 8/1) clay depletions on vertical faces of peds; many medium prominent strong brown (7.5YR 5/8) and few fine and medium prominent red (2.5YR 4/6) masses of iron accumulation; very strongly acid; gradual wavy boundary.
• BC—72 to 81 inches; light brownish gray (2.5Y 6/2) silty clay loam; massive; firm; common fine and medium faint light gray (2.5Y 6/1) iron depletions; many fine, medium, and coarse prominent strong brown (7.5YR 5/8) masses of iron accumulation; very strongly acid.

Range in Characteristics

• Solum thickness: More than 60 inches
• Reaction: Very strongly acid or strongly acid throughout the profile, except for the surface layer in areas that have been limed
• A or Ap horizon:
  • Color—hue of 10YR or 2.5Y, value of 3 to 5, and chroma of 2 to 4
  • Redoximorphic features—few to many masses of iron accumulation in shades of yellow and brown
• Btg horizon:
  • Color—hue of 10YR or 2.5Y, value of 5 or 6, and chroma of 1 or 2
  • Texture—commonly silt loam or silty clay loam; silty clay in the lower part in some pedons
  • Redoximorphic features—common or many iron or clay depletions in shades of gray and masses of iron accumulation in shades of red, yellow, and brown
• BC horizon (if it occurs):
  • Color—hue of 10YR or 2.5Y, value of 5 or 6, and chroma of 1 or 2
  • Texture—silt loam, silty clay loam, or silty clay
  • Redoximorphic features—common or many iron depletions in shades of gray and masses of iron accumulation in shades of brown

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