IDENTIFIERS
Current Taxon Name (Soil Name):
Courtois
OSD
Series Extent
User Site ID:
1991MO123004M
User Pedon ID:
1991MO123004M
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
MCL
Lab Pedon # -
M9112304
NCSS Pedon Lab Data NASIS Record ID -
31401
Print Date:
11/21/2024
LOCATION
Location In Web Soil Survey
AOI is roughly a square mile and pedon is marked in the center.
Location in SoilWeb
Location in Google Maps
Std. Latitude:
37.5385551
Std. Longitude:
-90.3041916
Datum:
WGS84
Section:
20
PLSS Details:
4450 feet N and 5250 feet W of the SE corner
Location Description:
4450 N. and 5250 W of SE corner of sec. 20, Spanish land grant.
Map Unit:
18C—Courtois silt loam, 3 to 9 percent slopes73143—Courtois silt loam, 3 to 8 percent slopes
State:
Missouri
County:
MO123—Madison
MLRA:
116A—Ozark Highland
Non-MLRA Soil Survey Area:
MO123—Madison County, Missouri
7.5 Minute USGS Quad:
37090-E3—Fredericktown, Missouri
PEDON
Describers Name:
KEB, MLC, CGM, RDC
Current Taxonomic Class:
Fine, mixed, active, mesic Typic Paleudalfs
Current Taxon Kind:
series
Pedon Type:
within range of map unit
Pedon Purpose:
laboratory sampling site
Pedon Record Orgin:
Converted from PDP 3.x
Correlated Information:
Soil Name -
Courtois
PSC -
5 to 55 cm.
Classificaton Date -
3/4/2011
Moisture Class -
udic
Sampled As Information:
Soil Name -
Courtois
Taxonomic Class -
Fine, mixed, active, mesic Typic Paleudalfs
Taxon Kind -
series
PSC -
5 to 55 cm.
Classificaton Date -
5/23/1991
Dynamic Soil Properties:
Erosion Class -
2
Pedoderm Loose Cover Indicator -
no
Hydric:
no
Field Measured Properties:
45 Cation exchange capacity to clay ratio
SITE
Parent Material:
slope alluvium over residuum
Landscape:
basin
Landform:
structural bench
Runoff:
low
Drainage Class:
well
Surface Fragments:
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
5/23/1991 (actual site observation date)
Air Photo ID:
C-4
Surface Cover Properties:
Site Obs. Cover Kind 1 -
grass/herbaceous cover
Pedoderm Loose Cover Indicator -
no
Drained? -
no
Bedded Soil? -
no
Forest Plantation? -
no
Site Erosion Accelerated:
water erosion
Pedon Diagnostic Features
Feature Kind
Feature Depth L-H
Feature Thickness L-RV-H
cm
ochric epipedon
argillic horizon
0—5
5—175
—-
—-
Setting and Climate
Slope
Slope Length USLE
Upslope Length
Elev.
Corr. Elev
Aspect
MAP
REAP
FFD
MAAT
MSAT
MWAT
MAST
MSST
MWST
MFFP
PE Index
Climate Station ID
Climate Station Name
Climate Station Type
%
m
degrees
mm
mm
C
mm
6
—
—
241
—
80
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Ap—0 to 5 centimeters (0.0 to 2.0 inches); dark reddish brown (5YR 3/4), reddish brown (5YR 4/4), dry; silt loam; moderate fine granular structure; friable; 10.0 fine and medium roots; 2 percent by volume 2-39-75 millimeter unspecified fragments; neutral, pH 6.7, hellige-truog; clear wavy boundary. Lab sample # MU041880
Bt1—5 to 15 centimeters (2.0 to 5.9 inches); reddish brown (5YR 4/4) and dark reddish brown (5YR 3/4) silt loam; moderate fine subangular blocky structure; friable; 10.0 fine roots; 35 percent faint clay films; 3 percent by volume rounded 2-39-75 millimeter unspecified fragments; neutral, pH 7.0, hellige-truog; clear wavy boundary. Lab sample # MU041881
2Bt2—15 to 38 centimeters (5.9 to 15.0 inches); red (2.5YR 4/6) silty clay; moderate very fine subangular blocky structure; firm; 3.0 fine roots; 75 percent distinct clay films; 3 percent by volume rounded 2-39-75 millimeter unspecified fragments; neutral, pH 6.9, hellige-truog; gradual wavy boundary. Lab sample # MU041882
2Bt3—38 to 71 centimeters (15.0 to 28.0 inches); dark red (2.5YR 3/6) gravelly clay; moderate very fine and fine subangular blocky structure; friable; 3.0 fine and medium roots; 35 percent prominent black (10YR 2/1) manganese or iron-manganese stains on faces of peds and 75 percent prominent clay films; 1 percent by volume rounded 75-162-250 millimeter unspecified fragments and 15 percent by volume rounded 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.5, hellige-truog; clear wavy boundary. Lab sample # MU041883
3Bt4—71 to 99 centimeters (28.0 to 39.0 inches); red (2.5YR 4/6) clay; 1 percent strong brown (7.5YR 5/8) fine prominent mottles; moderate very fine subangular blocky structure; friable; 0.5 fine roots; 35 percent prominent black (10YR 2/1) manganese or iron-manganese stains on faces of peds and 75 percent prominent clay films; fragments; very strongly acid, pH 5.0, hellige-truog; gradual wavy boundary. Lab sample # MU041884
3Bt5—99 to 119 centimeters (39.0 to 46.9 inches); dark red (2.5YR 3/6) and red (2.5YR 4/6) clay; 10 percent strong brown (7.5YR 5/6) fine prominent mottles; moderate very fine and fine subangular blocky structure; firm; 0.5 very fine roots; 75 percent prominent clay films and 75 percent prominent black (10YR 2/1) manganese or iron-manganese stains on faces of peds; fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU041885
3Bt6—119 to 152 centimeters (46.9 to 59.8 inches); dark red (2.5YR 3/6) and strong brown (7.5YR 5/6) clay; moderate very fine and fine subangular blocky structure; friable; 0.5 fine roots; 75 percent prominent clay films and 75 percent prominent black (10YR 2/1) manganese or iron-manganese stains on faces of peds; fragments; strongly acid, pH 5.1, hellige-truog; clear wavy boundary. Lab sample # MU041886
3Bt7—152 to 175 centimeters (59.8 to 68.9 inches); brown (7.5YR 4/4) clay; 10 percent yellowish red (5YR 4/6) medium distinct mottles; moderate fine subangular blocky structure; firm; 0.5 very fine roots; 35 percent prominent clay films and 35 percent prominent black (10YR 2/1) manganese or iron-manganese stains; 10 percent black (10YR 2/1) iron-manganese masses; fragments; neutral, pH 6.6, hellige-truog. Lab sample # MU041887. Some mixing from above horizon.