IDENTIFIERS
Current Taxon Name (Soil Name):
Houston Black
OSD
Series Extent
User Site ID:
S78TX027004
User Pedon ID:
S78TX027004
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
TAMU
Lab Pedon # -
S78TX027004
NCSS Pedon Lab Data NASIS Record ID -
45640
Print Date:
9/24/2024
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:
31.0444450
Std. Longitude:
-97.3361130
Datum:
WGS84
Location Description:
APPROXIMATELY 2 miles south of Temple in native pasture on south part of the Backland Research Center.
Map Unit:
HoB—Houston Black clay, 1 to 3 percent slopes
Country:
US—United States
State:
Texas
County:
TX027—Bell
MLRA:
86A—Texas Blackland Prairie, Northern Part
Regional Office:
SC—South Central
Non-MLRA Soil Survey Area:
TX027—Bell County, Texas
PEDON
Describers Name:
Wilding, Rivers, Ramsey
Current Taxonomic Class:
Fine, smectitic, thermic Udic Haplusterts
Current Taxon Kind:
series
Pedon Type:
classifies to current taxon name, full description
Pedon Purpose:
full pedon description
Pedon Record Orgin:
PedonPC
Correlated Information:
Soil Name -
Houston Black
PSC -
25 to 100 cm.
Classificaton Date -
6/4/2012
Moisture Subclass -
ustic
Sampled As Information:
Soil Name -
Houston Black
Classificaton Date -
10/10/1978
Dynamic Soil Properties:
Pedoderm Loose Cover Indicator -
no
Hydric:
no
SITE
Parent Material:
marl
Microfeature:
gilgai
Runoff:
very high
Drainage Class:
moderately well
Bedrock:
shale, calcareous
Geology:
Lower Taylor Marl group .
Surface Fragments:
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
10/10/1978 (actual site observation date)
Microrelief Kind:
microhigh
Surface Cover Properties:
Site Obs. Cover Kind 1 -
grass/herbaceous cover
Site Obs. Cover Kind 2 -
rangeland, grassland
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
secondary carbonates
slickensides
0—46
46—251
46—251
—-
—-
—-
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
—
—
—
183
—
93
—
—
—
—
—
—
—
—
—
—
—
—
—
—
A—0 to 46 centimeters (0.0 to 18.1 inches); dark gray (10YR 4/1), very dark gray (10YR 3/1), moist; clay; moderate fine subangular blocky, and moderate fine angular blocky structure; extremely hard, very firm; 3.0 fine roots; 1 percent fine dark concretions; fragments; slight effervescence; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary. Lab sample # TAMU332, TAMU333
Bss1—46 to 119 centimeters (18.1 to 46.9 inches); grayish brown (10YR 5/2), dark grayish brown (10YR 4/2), moist; clay; weak fine and medium angular blocky structure; extremely hard, very firm; 0.9 fine roots; 1 percent distinct dark gray (10YR 4/1), moist, organic stains on vertical faces of peds and 2 percent slickensides (pedogenic); 1 percent fine faint brownish yellow (10YR 6/6), moist, masses of oxidized iron with clear boundaries in matrix and 1 percent black (10YR 2/1), moist, iron-manganese concretions; 1 percent shell fragments and 1 percent fine carbonate concretions; fragments; slight effervescence; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary. Lab sample # TAMU334, TAMU335, TAMU336
Bss2—119 to 188 centimeters (46.9 to 74.0 inches); light brownish gray (10YR 6/2), grayish brown (10YR 5/2), moist; clay; weak fine and medium angular blocky structure; extremely hard, very firm; 3.0 fine roots; 15 percent slickensides (pedogenic); 1 percent fine faint brownish yellow (10YR 6/6), moist, masses of oxidized iron with clear boundaries in matrix and 1 percent fine spherical black (10YR 2/1), moist, iron-manganese concretions with sharp boundaries in matrix; and 1 percent fine carbonate concretions; fragments; slight effervescence; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary. Lab sample # TAMU340, TAMU341
Bss3—188 to 251 centimeters (74.0 to 98.8 inches); light brownish gray (10YR 6/2), grayish brown (10YR 5/2), moist; clay; weak medium angular blocky structure; extremely hard, very firm; 3.0 fine roots; 15 percent slickensides (pedogenic); 1 percent fine faint brownish yellow (10YR 6/6), moist, masses of oxidized iron with clear boundaries in matrix and 1 percent fine spherical black (10YR 2/1), moist, iron-manganese concretions with sharp boundaries in matrix; 1 percent fine carbonate concretions; fragments; slight effervescence; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary. Lab sample # TAMU342
C1—251 to 315 centimeters (98.8 to 124.0 inches); very pale brown (10YR 7/3), pale brown (10YR 6/3), moist; clay; 5 percent brownish yellow (10YR 6/6) fine faint mottles; massive; extremely hard, very firm; 1 percent fine black (10YR 2/1), moist, iron-manganese concretions with sharp boundaries in matrix; 1 percent fine carbonate concretions; fragments; strong effervescence; moderately alkaline, pH 8.0, hellige-truog; diffuse wavy boundary. Lab sample # TAMU343, TAMU347, TAMU348
C2—315 to 432 centimeters (124.0 to 170.1 inches); very pale brown (10YR 8/3), very pale brown (10YR 7/3), moist; 10 percent yellow (10YR 7/8) medium faint mottles; massive; extremely hard, very firm; 1 percent fine spherical black (10YR 2/1), moist, iron-manganese concretions with sharp boundaries in matrix; 1 percent carbonate masses and 1 percent fine carbonate concretions; fragments; strong effervescence; moderately alkaline, pH 8.0, hellige-truog. Lab sample # TAMU349, TAMU350