IDENTIFIERS

  • Current Taxon Name (Soil Name): Stephenville
  • OSD
  • Series Extent
  • User Site ID: S1962OK081002
  • User Pedon ID: S1962OK081002
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 40A4729
  • NCSS Pedon Lab Data NASIS Record ID - 41431
  • 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: 35.5497208
  • Std. Longitude: -97.0419464
  • Datum: WGS84
  • Township: 12N
  • Range: 2E
  • Section: 1
  • PLSS Details: 2000 feet W and 250 feet S of the NE corner
  • Map Unit: StB—Stephenville fine sandy loam, 1 to 3 percent slopes
  • Country: US—United States
  • State: Oklahoma
  • County: OK081—Lincoln
  • MLRA: 84A—North Cross Timbers
  • Regional Office: SC—South Central
  • MLRA Soil Survey Area: SC-STW—Stillwater, Oklahoma
  • 7.5 Minute USGS Quad: 35097-E1—Luther SE, Oklahoma

    • PEDON

  • Describers Name: Fred J. Dries
  • Current Taxonomic Class: Fine-loamy, siliceous, active, thermic Ultic Haplustalfs
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Stephenville
  • PSC - 36 to 71 cm.
  • Classificaton Date - 9/17/2013
  • Classifier - Walt Schaefer
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Stephenville
  • Taxonomic Class - Active
  • Taxon Kind - series
  • Classificaton Date - 6/1/1962
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1
  • QA Status: level 1


    • SITE

  • Parent Material: residuum weathered from sandstone
  • Landscape: hills
  • Landform: hillslope
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1962 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, savanna
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    weakly coherent

    89 - 114

    - 25 -

    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    paralithic contact

    0—18

    36—71

    89—114

    —18—

    —35—

    —25—
    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

    2

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    A—0 to 18 centimeters (0.0 to 7.1 inches); grayish brown (10YR 5/2) interior, dark grayish brown (10YR 4/2) interior, moist; loamy fine sand; 82 percent sand; 12 percent silt; 6 percent clay; weak fine granular structure; very friable; fragments; moderately acid, pH 5.6, hellige-truog; clear boundary. Lab sample # 40A35911. roots abundant
    E—18 to 36 centimeters (7.1 to 14.2 inches); very pale brown (10YR 7/4) interior, yellowish brown (10YR 5/4) interior, moist; loamy fine sand; 84 percent sand; 9 percent silt; 7 percent clay; structureless massive; fragments; moderately acid, pH 6.0, hellige-truog; abrupt boundary. Lab sample # 40A35912. roots abundant
    Bt1—36 to 43 centimeters (14.2 to 16.9 inches); reddish yellow (5YR 6/6) interior, yellowish red (5YR 5/6) interior, moist; sandy clay loam; 63 percent sand; 8 percent silt; 29 percent clay; weak medium subangular blocky structure; fragments; moderately acid, pH 6.0, hellige-truog; clear boundary. Lab sample # 40A35913. roots abundant
    Bt2—43 to 71 centimeters (16.9 to 28.0 inches); yellowish red (5YR 5/6) interior, yellowish red (5YR 4/6) interior, moist; sandy clay loam; 60 percent sand; 8 percent silt; 32 percent clay; moderate medium subangular blocky structure; hard, friable; fragments; very strongly acid, pH 5.0, hellige-truog; gradual wavy boundary. Lab sample # 40A35914
    BC—71 to 89 centimeters (28.0 to 35.0 inches); red (2.5YR 5/6) interior, dark red (2.5YR 3/6) interior, moist; sandy clay loam; 64 percent sand; 5 percent silt; 31 percent clay; weak medium subangular blocky structure; hard, friable; fragments; very strongly acid, pH 5.0, hellige-truog; gradual boundary. Lab sample # 40A35915
    Cr—89 to 114 centimeters (35.0 to 44.9 inches); red (2.5YR 4/6) interior, dark red (2.5YR 3/6) interior, moist; bedrock; fragments. Lab sample # 40A35916. weathered sandstone