IDENTIFIERS

  • Current Taxon Name (Soil Name): Stephenville
  • OSD
  • Series Extent
  • User Site ID: S1962OK081001
  • User Pedon ID: S1962OK081001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 40A4728
  • NCSS Pedon Lab Data NASIS Record ID - 41430
  • 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: 35.5513878
  • Std. Longitude: -97.0083313
  • Datum: WGS84
  • Township: 13N
  • Range: 3E
  • Section: 32
  • PLSS Details: 110 feet N and 100 feet W of the SE corner of the SW quarter
  • 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: laboratory sampling site
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Stephenville
  • PSC - 36 to 69 cm.
  • Classificaton Date - 9/17/2013
  • Classifier - Walt Schaefer
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Stephenville
  • 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: colluvium derived from sandstone over 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

    79 - 104

    - 25 -

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

    ochric epipedon

    argillic horizon

    paralithic contact

    0—15

    36—69

    79—104

    —15—

    —33—

    —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 15 centimeters (0.0 to 5.9 inches); grayish brown (10YR 5/2) interior, dark grayish brown (10YR 4/2) interior, moist; loamy fine sand; 82 percent sand; 14 percent silt; 4 percent clay; weak fine granular structure; very friable; fragments; moderately acid, pH 6.0, hellige-truog; clear boundary. Lab sample # 40A35905. roots abundant
    E—15 to 36 centimeters (5.9 to 14.2 inches); light brown (7.5YR 6/3) interior, brown (7.5YR 4/4) interior, moist; loamy fine sand; 85 percent sand; 10 percent silt; 5 percent clay; weak very fine granular, and structureless massive; very friable; fragments; strongly acid, pH 5.5, hellige-truog; abrupt boundary. Lab sample # 40A35906
    Bt1—36 to 46 centimeters (14.2 to 18.1 inches); yellowish red (5YR 5/6) interior, yellowish red (5YR 4/6) interior, moist; sandy clay loam; 68 percent sand; 6 percent silt; 26 percent clay; weak fine and medium subangular blocky structure; slightly hard, friable; fragments; strongly acid, pH 5.5, hellige-truog; gradual wavy boundary. Lab sample # 40A35907. roots abundant
    Bt2—46 to 69 centimeters (18.1 to 27.2 inches); yellowish red (5YR 5/6) interior, yellowish red (5YR 4/6) interior, moist; sandy clay loam; 61 percent sand; 4 percent silt; 35 percent clay; moderate medium subangular blocky structure; hard, friable; fragments; very strongly acid, pH 5.0, hellige-truog; gradual boundary. Lab sample # 40A35908. roots present in this horizon
    BC—69 to 79 centimeters (27.2 to 31.1 inches); yellowish red (5YR 5/8) interior, 5YR 4/8 (5YR 4/8) interior, moist; sandy clay loam; 71 percent sand; 4 percent silt; 26 percent clay; weak fine subangular blocky structure; slightly hard, friable; fragments; very strongly acid, pH 5.0, hellige-truog wavy boundary. Lab sample # 40A35909. few red sandstone fragments.
    Cr—79 to 104 centimeters (31.1 to 40.9 inches); red (2.5YR 4/6) interior, dark red (2.5YR 3/6) interior, moist; bedrock; fragments. Lab sample # 40A35910. weathered sandstone