Soil Survey of Bosque County, Texas Page: 52
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SOIL SURVEY
cium carbonate; about 10 percent by volume round-
ed chert and quartz gravel; calcareous; moderately
alkaline; clear wavy boundary.
B2ca-7 to 36 inches; yellow (10OYR 7/6) gravelly clay
loam, brownish yellow (10YR 6/6) when moist; mod-
erate fine granular structure; about 20 percent by
volume chert and quartz gravel; about 15 percent,
concretions and soft masses of calcium carbonate;
few fine roots; calcareous; moderately alkaline; grad-
ual smooth boundary.
Cca-36 to 80 inches; weakly to strongly cemented
yellow (10YR 7/6) very gravelly loam; massive; hard,
friable; few fine roots; about 50 percent chert and
quartz gravel; about 10 percent soft bodies and con-
cretions of calcium carbonate; calcareous; moder-
ately alkaline.
Solum thickness ranges from 30 to 40 inches. Calcium
carbonate equivalent is 40 to 70 percent. Reaction
ranges from mildly alkaline to moderately alkaline.
The A horizon is yellowish brown, brown, or grayish
brown. Chert and quartz gravel makes up 5 to 15 per-
cent of the volume.
The B horizon is pale brown, light yellowish brown, or
yellow. Chert and quartz gravel is about 15 to 25 per-
cent.
The C horizon is very pale brown or yellow. Chert and
quartz gravel is about 35 to 60 percent. Calcium carbon-
ate concretions comprise 5 to 10 percent of the C hori-
zon. Gravel beds occur under these soils at depths of
about 30 to 40 inches.
These soils are variants of the Seawillow series in that
they have very gravelly lower layers at depths of 30 to
40 inches. The minor acreage of these soils does not
warrant setting up a new series.
Selden series
The Selden series consists of deep, moderately well
drained sandy soils on uplands. These soils formed over
sandy and loamy sediments reworked by wind. Slope
ranges from 1 to 5 percent.
Typical pedon of Selden loamy fine sand, 1 to 5 per-
cent slopes; from intersection of Texas Highway 6 and
Farm Road 216 in Iredell, 0.1 mile west on Texas High-
way 6, 0.5 mile south and west on paved county road,
and west 100 feet in pastureland:
Al1-0 to 6 inches; grayish brown (10YR 5/2) loamy fine
sand, dark grayish brown (10YR 4/2) moist; single
grained; loose, very friable; slightly acid; clear
smooth boundary.
A2-6 to 12 inches; very pale brown (10YR 7/3) loamy
fine sand, pale brown (10YR 6/3) moist; single
grained; loose; slightly acid; abrupt wavy boundary.
B21t-12 to 27 inches; brownish yellow (10YR 6/6)
sandy clay loam, yellowish brown (10YR 5/6) moist,
many fine to medium prominent light brownish gray(10YR 6/2) and red (2.5YR 5/8) mottles; weak fine
subangular blocky structure; very hard, very firm; few
medium roots and pores; few clay films on faces of
peds; slightly acid; gradual wavy boundary.
B22t-27 to 37 inches; coarsely mottled, light gray
(10YR 7/1), yellow (10YR 7/6), and red (2.5YR 5/8)
sandy clay loam; weak medium blocky structure;
very hard, very firm; few fine roots and pores; few
clay films on faces of peds; medium acid; gradual
wavy boundary.
B23t-37 to 49 inches; light gray (10YR 7/1) sandy clay
loam, gray (10YR 6/1) moist; common medium
prominent yellow (2.5Y 7/6) and red (2.5YR 5/8)
mottles; weak medium blocky structure; very hard,
firm; few patchy clay films on faces of peds; medium
acid; gradual wavy boundary.
B3--49 to 60 inches; light gray (10YR 7/1) sandy clay
loam, gray (10YR 6/1) moist; common medium dis-
tinct yellow (2.5Y 7/6) and few fine prominent red
mottles; weak blocky structure; very hard firm;
medium acid.
Thickness of solum ranges from 54 to 80 inches.
Thickness of the A horizon ranges from 10 to 20 inches.
The Al horizon is light brown, grayish brown, brown, or
pale brown. The A2 horizon is pale brown, very pale
brown, or light yellowish brown.
The upper part of the B horizon is brownish yellow
mottled in shades of gray, brown, yellow, or red in some
pedons. The middle and lower part of the B horizon is
coarsely mottled or is light gray that has yellow and red
mottles. The average clay content ranges from 18 to 35
percent. Reaction ranges from slightly acid to strongly
acid.
SIIdell series
The Slidell series consists of deep, well drained clayey
soils on uplands. These soils formed in valley areas over
thick beds of unconsolidated, calcareous, clayey sedi-
ments. Slope ranges from 0 to 3 percent.
Typical pedon of Slidell clay, 1 to 3 percent slopes; in
the center of a microdepression; from intersection of
Texas Highway 22 and Farm Road 219 in Cranfill Gap,
0.4 mile north on Farm Road 219, and 125 feet east in
cultivated field:
Ap-0 to 5 inches; dark gray (10YR 4/1) clay, very dark
gray (10YR 3/1) moist; moderate fine subangular
blocky and moderate medium granular structure; ex-
tremely hard, very firm; common fine roots; common
wormcasts; few fine concretions of calcium carbon-
ate; few snail fragments; calcareous; moderately al-
kaline; abrupt smooth boundary.
A12-5 to 10 inches; very dark gray (10YR 3/1) clay,
black (10YR 2/1) moist; moderate fine subangular
blocky structure; extremely hard, very firm; common
fine roots; common wormcasts; shiny faces of peds;52
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General Soil Map, Bosque County, Texas (Map)
Map displays soil types along with creeks, towns, schools, churches, power transmission lines, oil and gas pipelines, roads, and railroads. Includes legend and symbols. Scale 1:316,800.
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Stringer, Billy R. Soil Survey of Bosque County, Texas, book, 1980; Washington D.C.. (https://texashistory.unt.edu/ark:/67531/metapth130202/m1/62/: accessed April 25, 2024), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting UNT Libraries Government Documents Department.