IDENTIFIERS

  • Current Taxon Name (Soil Name): Stephenville
  • OSD
  • Series Extent
  • User Site ID: S1991OK109002
  • User Pedon ID: S1991OK109002
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 91P0903
  • NCSS Pedon Lab Data NASIS Record ID - 63941
  • Print Date: 12/17/2024

    • 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: 35.5344429
  • Std. Longitude: -97.3338852
  • Datum: WGS84
  • Township: 12N
  • Range: 1W
  • Section: 8
  • PLSS Details: About 750 feet S and 450 feet E from NW corner
  • Map Unit: 1SDND—Stephenville-Darsil-Newalla complex, 3 to 8 percent slopes
  • Country: US—United States
  • State: Oklahoma
  • County: OK109—Oklahoma
  • MLRA: 84A—North Cross Timbers
  • Regional Office: SC—South Central
  • MLRA Soil Survey Area: SC-STW—Stillwater, Oklahoma
  • 7.5 Minute USGS Quad: 35097-E3—Jones, Oklahoma

    • PEDON

  • Current Taxonomic Class: Fine-loamy, siliceous, active, thermic Ultic Haplustalfs
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Stephenville (flagged as OSD)
  • PSC - 38 to 84 cm.
  • Classificaton Date - 9/16/2013
  • Classifier - Walt Schaefer
  • Soil Taxonomic Edition - thirteenth edition
  • Moisture Class - ustic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Stephenville
  • Taxonomic Class - Fine-loamy, siliceous, active, thermic Ultic Haplustalfs
  • Taxon Kind - series
  • Classificaton Date - 7/11/2007
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 3
  • QA Status: level 3


    • SITE

  • Parent Material: residuum weathered from sandstone
  • Landscape: hills
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Slope Shape Down: convex
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1991 (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

    84 - 130

    - 46 -

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

    ochric epipedon

    argillic horizon

    paralithic contact

    0—13

    38—84

    84—130

    —13—

    —46—

    —46—
    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

    5

    —

    —

    375

    —

    90

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 13 centimeters (0.0 to 5.1 inches); grayish brown (10YR 5/2), very dark grayish brown (10YR 3/2), moist; loamy fine sand; 81 percent sand; 15 percent silt; 4 percent clay; weak very fine granular structure; soft, very friable; 5.5 very fine and fine roots and 0.5 medium and coarse roots; fragments; moderately acid, pH 5.8, hellige-truog; clear smooth boundary. Lab sample # 91P5498. few medium and coarse roots; many very fine and fine roots
    E—13 to 38 centimeters (5.1 to 15.0 inches); light brown (7.5YR 6/4), brown (7.5YR 5/4), moist; loamy fine sand; 85 percent sand; 11 percent silt; 4 percent clay; weak medium subangular blocky, and weak fine granular structure; soft, very friable; 2.5 very fine and fine roots and 2.5 medium roots; fragments; strongly acid, pH 5.5, hellige-truog; abrupt wavy boundary. Lab sample # 91P5499. common very fine and fine roots; common medium roots
    Bt1—38 to 64 centimeters (15.0 to 25.2 inches); red (2.5YR 5/6), red (2.5YR 4/6), moist; sandy clay loam; 64 percent sand; 11 percent silt; 25 percent clay; moderate medium subangular blocky structure; very hard, firm; 2.5 very fine and fine roots and 2.5 medium roots; faint clay films; fragments; very strongly acid, pH 4.8, hellige-truog; gradual wavy boundary. Lab sample # 91P5500. clean sand grains along root channels; common very fine and fine roots; common medium roots; continuous - phpvsfiid 1237687; continuous - phpvsfiid 1237687
    Bt2—64 to 84 centimeters (25.2 to 33.1 inches); light red (2.5YR 6/6), red (2.5YR 5/6), moist; sandy clay loam; 71 percent sand; 9 percent silt; 20 percent clay; weak coarse subangular blocky structure; hard, friable; 0.5 very fine roots and 0.5 medium and coarse roots; faint clay films; fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # 91P5501. clean sand grains along root channels; few medium and coarse roots; few very fine roots; patchy - phpvsfiid 1237688; patchy - phpvsfiid 1237688
    Cr1—84 to 104 centimeters (33.1 to 40.9 inches); red (2.5YR 5/6), red (2.5YR 4/6), moist; bedrock; massive; hard; 0.5 medium roots and 2.5 fine roots; fragments; strongly acid, pH 5.5, hellige-truog; clear wavy boundary. Lab sample # 91P5502. along fractures there are stripped areas of loamy fine sand (7.5YR 6/6 moist) stripped (pH 5.6); few medium roots; common fine roots
    Cr2—104 to 130 centimeters (40.9 to 51.2 inches); reddish yellow (5YR 6/8), yellowish red (5YR 5/8), moist; bedrock; massive; very hard; 0.5 medium roots and 2.5 fine roots; fragments; strongly acid, pH 5.5, hellige-truog. Lab sample # 91P5503. matrix only; zones are 10-30 cm apart and stripped areas are 1-10 cm across; few medium roots; common fine roots