IDENTIFIERS
Current Taxon Name (Soil Name):
Darwin
OSD
Series Extent
User Site ID:
1990MO019025
User Pedon ID:
1990MO019025
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
MCL
Lab Pedon # -
M9001925
NCSS Pedon Lab Data NASIS Record ID -
26636
Print Date:
11/26/2024
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:
38.9078206
Std. Longitude:
-92.4332260
Datum:
WGS84
Range:
R13W
Section:
31
Location Description:
2400 feet north and 2300 feet east of the southwest corner of sec. 31, T.48N.,R.13W.
State:
Missouri
County:
MO019—Boone
MLRA:
115—Central Mississippi Valley Wooded Slopes
PEDON
Describers Name:
F.J. Young
Current Taxon Kind:
series
Pedon Type:
map unit inclusion
Pedon Purpose:
full pedon description
Pedon Record Orgin:
Converted from PDP 3.x
Sampled As Information:
Soil Name -
Darwin
PSC -
25 to 100 cm.
Classificaton Date -
7/20/1990
Moisture Class -
udic
Dynamic Soil Properties:
Pedoderm Loose Cover Indicator -
no
Hydric:
no
SITE
Parent Material:
alluvium
Landform:
fluvial terrace
Runoff:
negligible
Drainage Class:
very poorly
Surface Fragments:
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
7/20/1990 (actual site observation date)
Air Photo ID:
35
Surface Cover Properties:
Site Obs. Cover Kind 1 -
crop cover
Pedoderm Loose Cover Indicator -
no
Drained? -
no
Bedded Soil? -
no
Forest Plantation? -
no
Pedon Diagnostic Features
Feature Kind
Feature Depth L-H
Feature Thickness L-RV-H
cm
mollic epipedon
cambic horizon
0—23
48—170
—-
—-
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
1
—
—
—
—
90
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Ap—0 to 20 centimeters (0.0 to 7.9 inches); black (10YR 2/1), very dark gray (10YR 3/1), dry; silty clay; weak fine subangular blocky, and strong fine granular structure; firm; 0.5 very fine roots; fragments; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # MU010865. (Note: The upper most two inches is strong fine granular.)
A—20 to 48 centimeters (7.9 to 18.9 inches); black (10YR 2/1), black (10YR 2/1), dry; clay; strong fine subangular blocky structure; firm; 0.5 very fine roots; fragments; neutral, pH 6.8, hellige-truog; gradual smooth boundary. Lab sample # MU010866
Bg1—48 to 71 centimeters (18.9 to 28.0 inches); dark gray (10YR 4/1) clay; 1 percent dark grayish brown (10YR 4/2) fine mottles; strong very fine subangular blocky structure; firm; 0.5 very fine roots; fragments; neutral, pH 6.9, hellige-truog; clear smooth boundary. Lab sample # MU010867
Bg2—71 to 107 centimeters (28.0 to 42.1 inches); gray (5Y 5/1) clay; 1 percent very dark gray (10YR 3/1) fine mottles; strong fine subangular blocky structure; firm; 10 percent fine yellowish brown (10YR 5/6) masses of oxidized iron; 1 percent fine irregular carbonate concretions; fragments; slightly alkaline, pH 7.4, hellige-truog; gradual smooth boundary. Lab sample # MU010868
Bg3—107 to 145 centimeters (42.1 to 57.1 inches); gray (5Y 5/1) clay; 1 percent very dark gray (10YR 3/1) coarse mottles; strong fine and medium subangular blocky structure; firm; slickensides (pedogenic); 10 percent fine yellowish brown (10YR 5/6) masses of oxidized iron; fragments; slightly alkaline, pH 7.5, hellige-truog; diffuse smooth boundary. Lab sample # MU010869
Bg4—145 to 170 centimeters (57.1 to 66.9 inches); gray (5Y 5/1) silty clay; 1 percent very dark gray (10YR 3/1) coarse mottles; strong fine and medium subangular blocky structure; firm; slickensides (pedogenic); 1 percent coarse yellowish brown (10YR 5/6) masses of oxidized iron; fragments; slightly alkaline, pH 7.6, hellige-truog. Lab sample # MU010870