\<@37\>Fullerton Series

\<@32\>The Fullerton series consists of very deep, well drained, cherty
soils that dominantly formed in residuum weathered from cherty limestone
or dolomite. These soils are on gently sloping to very steep uplands. On
moderately steep to very steep backslopes, the upper portion of the soil
may have formed in a layer of colluvium or have been affected by soil
creep. Near the type location, the average annual precipitation is 45 to
55 inches and the average annual air temperature is about 60 degrees F.
Slopes range from 2 to 70 percent. These soils are fine, kaolinitic,
thermic Typic Paleudults.

\<@32\>Typical pedon of Fullerton gravelly silt loam in a forested area
in Meigs County, Tennessee; 4 miles north of Decatur on River Road, 1.3
miles north of Eaves Ferry Road, on a west-facing, wooded slope, 150
feet east of a two-pronged chestnut oak that is 40 feet west of River
Road.

\<@23\>A---0 to 2 inches; dark grayish brown (10YR 4/2) gravelly silt
loam; moderate fine granular structure; very friable; many fine and
medium roots; 15 percent chert gravel; strongly acid; abrupt smooth
boundary. (0 to 9 inches thick)

\<@33\>E---2 to 11 inches; brown (10YR 5/3) gravelly silt loam; moderate
medium granular structure; very friable; many fine and medium roots; 15
percent chert gravel; very strongly acid; clear smooth boundary. (0 to
10 inches thick)

\<@33\>BE---11 to 15 inches; strong brown (7.5YR 5/6) gravelly silt
loam; few fine distinct yellowish red (5YR 5/6) variegations; moderate
medium granular and moderate fine subangular blocky structure; friable;
many fine and medium roots; 20 percent chert gravel; very strongly acid;
clear smooth boundary. (0 to 7 inches thick)

\<@33\>Bt1---15 to 19 inches; yellowish red (5YR 4/6) gravelly silty
clay loam; few seams and pockets of strong brown (7.5YR 5/6) gravelly
silt loam extending down from the BE horizon; moderate fine subangular
blocky structure; friable; common fine and medium roots; few faint clay
films on faces of peds; 20 percent chert gravel; very strongly acid;
clear smooth boundary.

\<@33\>Bt2---19 to 30 inches; red (2.5YR 4/8) gravelly clay; moderate
medium and fine subangular blocky structure; firm; common fine roots;
common faint clay films on faces of peds; 25 percent chert gravel; very
strongly acid; gradual smooth boundary.

\<@33\>Bt3---30 to 50 inches; red (2.5YR 4/8) gravelly clay; strong
medium subangular blocky structure; firm; few fine roots; many distinct
clay films on faces of peds and in pores; 25 percent chert gravel; very
strongly acid; gradual smooth boundary.

\<@33\>Bt4---50 to 60 inches; red (2.5YR 4/8) gravelly clay; few medium
prominent strong brown (7.5YR 5/6) mottles; strong medium subangular
blocky structure; firm; many distinct clay films on faces of peds and in
pores; 30 percent chert gravel; very strongly acid; gradual smooth
boundary.

\<@33\>Bt5---60 to 90 inches; red (2.5YR 4/8) gravelly clay; common
medium and coarse prominent strong brown (7.5YR 5/6) mottles; strong
medium subangular blocky structure; firm; common distinct clay films on
faces of peds; very strongly acid. (The combined thickness of the Bt
horizons ranges from 50 to more than 75 inches.)

\<@8\>The thickness of the solum and depth to bedrock are more than 60
inches. Rock fragments are mostly pebbles and cobbles of chert.
Typically, the content of rock fragments ranges from 10 to 45 percent in
individual horizons and the particle-size control section averages
between 15 and 35 percent. In some pedons, however the content of rock
fragments is more than 45 percent below a depth of 40 inches. Reaction
is strongly acid or very strongly acid, except where lime has been
applied.

\<@32\>The A or Ap horizon dominantly has hue of 7.5YR or 10YR, value of
3 to 6, and chroma of 2 to 4. In some severely eroded areas, however,
the Ap horizon has hue of 5YR. The texture of the fine-earth fraction is
dominantly silt loam, loam, or fine sandy loam. In some moderately
eroded and severely eroded areas, however, it is silty clay loam or clay
loam.

\<@32\>The E horizon, where present, has hue of 7.5YR or 10YR, value of
5 or 6, and chroma of 2 to 4. The texture of the fine-earth fraction is
silt loam, loam, or fine sandy loam.

\<@32\>The BE horizon, where present, has hue of 7.5YR or 10YR, value of
4 or 5, and chroma of 4 to 6. The texture of the fine-earth fraction is
silt loam, loam, or fine sandy loam.

\<@32\>The Bt horizon dominantly has hue of 2.5YR or 5YR, value of 4 or
5, and chroma of 4 to 8. In some pedons, however, the upper part has hue
of 7.5YR. Mottles in the Bt horizon are in shades of brown, yellow, or
red. The texture of the fine-earth fraction is silty clay or clay,
except in the upper part where it ranges to silty clay loam or clay
loam.