IDENTIFIERS
Current Taxon Name (Soil Name):
Stovall
OSD
Series Extent
User Site ID:
S1991TX043006
User Pedon ID:
91TX043006
Lab Information:
Certified Lab Pedon Description -
no
Lab Source ID -
SSL
Lab Pedon # -
91P0462
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:
30.3391666
Std. Longitude:
-103.0175018
Datum:
WGS84
Location Description:
from the junction of US 90 and US 385 in Marathon; 14.45 miles N on US 385; .85 miles E and S to hdqtrs of Randolf-Keller ranch; 1.9 miles E on ranch road to gate; .5 miles S on ranch road; 30 feet E of road in range
Map Unit:
SOA—Stovall silt loam, 0 to 3 percent slopes
Country:
US—United States
State:
Texas
County:
TX043—Brewster
MLRA:
42—Southern Desertic Basins, Plains, and Mountains
Regional Office:
8—Phoenix, AZ
Non-MLRA Soil Survey Area:
TX622—Brewster County, Texas (Main Part)
7.5 Minute USGS Quad:
30103-C1—Wolf Camp Hills, Texas
PEDON
Describers Name:
Rex Cochran
Current Taxonomic Class:
Fine-silty, carbonatic, hyperthermic Ustic Haplocalcids
Current Taxon Kind:
taxadjunct
Pedon Type:
OSD pedon
Pedon Purpose:
full pedon description
Pedon Record Orgin:
Converted from SSL-CMS data
Pedon #:
6
Correlated Information:
Soil Name -
Stovall
PSC -
25 to 100 cm.
Classificaton Date -
2/1/2010
Soil Taxonomic Edition -
tenth edition
Moisture Class -
aridic (torric)
Moisture Subclass -
ustic
Sampled As Information:
Soil Name -
Hodgins
Taxonomic Class -
Fine-silty, mixed, thermic Ustollic Camborthid
Taxon Kind -
series
Classificaton Date -
2/1/1991
Moisture SUBClass -
ustic
Dynamic Soil Properties:
Erosion Class -
1
Pedoderm Loose Cover Indicator -
no
Hydric:
no
SITE
Landscape:
upland
Landform:
playa or alluvial flat
Slope Shape Down:
linear
Runoff:
low
Drainage Class:
well
Surface Fragments:
0.00 percent
Benchmark Soil?:
no
VEGETATION
SITE OBSERVATION
Observation Date:
2/1/1991 (actual site observation date)
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
Site Erosion Accelerated:
water erosion
Pedon Diagnostic Features
Feature Kind
Feature Depth L-H
Feature Thickness L-RV-H
cm
ochric epipedon
cambic horizon
calcic horizon
0—20
20—64
64—203
—-
—-
—-
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
—
—
1280
—
0
36
—
—
—
—
—
—
—
—
—
—
—
—
—
A1—0 to 8 centimeters (0.0 to 3.1 inches); brown (10YR 5/3), brown (10YR 4/3), moist; loam; moderate medium granular structure; slightly hard, very friable, slightly sticky, slightly plastic; 2.5 very fine and fine roots throughout and 0.5 medium roots throughout; 0.5 fine tubular pores; fragments; strong effervescence, by hcl, 1n; abrupt smooth boundary. Lab sample # 91P02642. few small pebbles, less 1%, less 1/4 inch; few medium roots throughout; common very fine and fine roots throughout; effervescence is continuous
A2—8 to 20 centimeters (3.1 to 7.9 inches); brown (10YR 5/3), brown (10YR 4/3), moist; silty clay loam; moderate medium granular structure; slightly hard, very friable, slightly sticky, slightly plastic; 2.5 very fine and fine roots throughout and 0.5 medium roots throughout; 2.5 fine tubular pores; fragments; strong effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 91P02643. few, less 1% small less 1/4 inch pebbles; few medium roots throughout; common very fine and fine roots throughout; effervescence is continuous
Bw1—20 to 64 centimeters (7.9 to 25.2 inches); pale brown (10YR 6/3), brown (10YR 4/3), moist; clay loam; moderate medium granular structure; hard, friable, moderately sticky, moderately plastic; 2.5 very fine and fine roots throughout; 2.5 fine tubular pores; fragments; strong effervescence, by hcl, 1n; clear wavy boundary. Lab sample # 91P02644. few, less 1% small, less 1/4 inch pebbles; common very fine and fine roots throughout; effervescence is continuous
Bw2—64 to 124 centimeters (25.2 to 48.8 inches); light brown (7.5YR 6/4), brown (7.5YR 4/4), moist; clay loam; weak fine subangular blocky structure; hard, friable, slightly sticky, slightly plastic; 0.5 very fine and fine roots throughout; 0.5 fine tubular pores; 11 percent fine irregular carbonate masses and 1 percent medium spherical carbonate concretions; fragments; strong effervescence, by hcl, 1n; gradual wavy boundary. Lab sample # 91P02645. few, less 2% small less 1/4 inch pebbles; common fine soft masses of carbonate concentrations; few medium carbonate concretions concentrations; few very fine and fine roots throughout; effervescence is continuous
Bk1—124 to 152 centimeters (48.8 to 59.8 inches); pink (7.5YR 7/4), light brown (7.5YR 6/4), moist; clay loam; moderate medium granular structure; hard, friable, slightly sticky, slightly plastic; 0.5 fine tubular pores; 11 percent fine irregular carbonate masses and 11 percent fine and medium spherical carbonate concretions; fragments; violent effervescence, by hcl, 1n; gradual wavy boundary. Lab sample # 91P02646. few, less 2% small less 1/4 inch pebbles; common fine soft masses of carbonate concentrations; common fine and medium carbonate concretions concentrations; effervescence is continuous
Bk2—152 to 203 centimeters (59.8 to 79.9 inches); pink (7.5YR 7/4), light brown (7.5YR 6/4), moist; clay loam; weak medium granular structure; hard, friable, slightly sticky, slightly plastic; 2.5 fine tubular pores; 11 percent fine irregular carbonate masses and 11 percent fine and medium spherical carbonate concretions; fragments; violent effervescence, by hcl, 1n. Lab sample # 91P02647. few, less 2% small less 1/4 inch pebbles; common fine soft masses of carbonate concentrations; common fine and medium carbonate concretions concentrations; effervescence is continuous