IDENTIFIERS

  • Current Taxon Name (Soil Name): Darnell
  • OSD
  • Series Extent
  • User Site ID: S1991OK083007
  • User Pedon ID: 91OK083007
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 91P0878
  • NCSS Pedon Lab Data NASIS Record ID - 63916
  • Print Date: 4/25/2025

    • 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: 35.7386093
  • Std. Longitude: -97.2797241
  • Datum: WGS84
  • Location Description: This area was burned fall of '90 by a fire hot enough to kill 15 feet oaks; the fire removed a lot of leaf litter.
  • Map Unit: MaIG—Masham-Ironmound complex, 15 to 40 percent slopes
  • Country: US—United States
  • State: Oklahoma
  • County: OK083—Logan
  • MLRA: 84A—North Cross Timbers
  • Regional Office: SC—South Central
  • MLRA Soil Survey Area: SC-STW—Stillwater, Oklahoma
  • 7.5 Minute USGS Quad: 35097-F3—Arcadia, Oklahoma

    • PEDON

  • Describers Name: Wilson, Ford, Gastineau, Puckett, Sample
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 7
  • Sampled As Information:
  • Soil Name - Darnell
  • Taxonomic Class - Siliceous, nonacid, shallow Ustic Quartzipsamments
  • PSC - 0 to 36 cm.
  • Classificaton Date - 6/1/1991
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from sandstone
  • Landscape: hills
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: shoulder
  • Slope Shape Down: convex
  • Runoff: low
  • Drainage Class: somewhat excessively
  • Bedrock: with 10 to <45
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1991 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • 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

    paralithic contact

    36—89

    —-
    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

    12

    —

    —

    332

    —

    45

    79

    —

    —

    16

    27

    4

    17

    28

    6

    —

    —

    —

    3821

    —
    O—0 to 3 centimeters (0.0 to 1.2 inches); fragments; abrupt smooth boundary. fibric material consisting of leaf litter and twigs
    A—3 to 11 centimeters (1.2 to 4.3 inches); brown (7.5YR 4/4) crushed, brown (7.5YR 5/4) crushed, dry; loamy fine sand; weak medium granular structure; soft, very friable; 2.5 medium roots throughout and 0.5 coarse roots throughout; 5.5 interstitial pores; fragments; extremely acid, pH 4.2, hellige-truog; clear wavy boundary. Lab sample # 91P05344. few coarse roots throughout; common medium roots throughout
    EC—11 to 39 centimeters (4.3 to 15.4 inches); reddish brown (2.5YR 5/4) crushed, light reddish brown (2.5YR 6/4) crushed, dry; loamy fine sand; weak medium granular structure; soft, very friable; 2.5 very fine and fine roots throughout and 0.5 medium roots throughout; 5.5 interstitial pores; fragments; strongly acid, pH 5.5, hellige-truog; abrupt smooth boundary. Lab sample # 91P05345. few medium roots throughout; common very fine and fine roots throughout
    Cr1—39 to 64 centimeters (15.4 to 25.2 inches); red (2.5YR 4/8) crushed, red (2.5YR 5/8) crushed, dry; 0.5 fine and medium roots in cracks and 0.5 coarse roots in cracks; fragments; strongly acid, pH 5.5, hellige-truog; abrupt wavy boundary. Lab sample # 91P05346. weakly cemented to indurated brittle sandstone-laminar; few fine and medium roots in cracks; few coarse roots in cracks
    Cr2—64 to 92 centimeters (25.2 to 36.2 inches); red (2.5YR 4/8) crushed, red (2.5YR 5/8) crushed, dry; 0.5 fine and medium roots in cracks and 0.5 coarse roots in cracks; fragments; moderately acid, pH 6.0, hellige-truog. Lab sample # 91P05347. laminar sandstone - roots concentrated in fractures; there is a discontinuous Bt horizon above Cr1 which does not meet minimum thickness for an argillic - it's 1-5 cm thick and its texture is FSL; few fine and medium roots in cracks; few coarse roots in cracks