IDENTIFIERS

  • Current Taxon Name (Soil Name): Darwin
  • OSD
  • Series Extent
  • User Site ID: S1963IL101001
  • User Pedon ID: S1963IL101001
  • Vegetation Plot ID: S1963IL101001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A1978
  • NCSS Pedon Lab Data NASIS Record ID - 36136
  • Print Date: 11/11/2024

    • 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: 38.8213882
  • Std. Longitude: -87.5749969
  • Datum: WGS84
  • Township: 4N
  • Range: 10W
  • Section: 6
  • PLSS Details: 320 feet south of road center and 110 feet east of northwest corner of NE 1/4 of NE 1/4
  • State: Illinois
  • County: IL101—Lawrence
  • MLRA: 115—Central Mississippi Valley Wooded Slopes
  • Non-MLRA Soil Survey Area: IL101—Lawrence County, Illinois

    • PEDON

  • Describers Name: L.E. Tyler, G.O. Walker, and I. Jorgensen
  • Current Taxonomic Class: Fine, smectitic, mesic Vertic Haplaquolls
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Darwin
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - aquic
  • Sampled As Information:
  • Soil Name - Darwin
  • Classificaton Date - 10/18/1963
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Runoff: low
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/18/1963 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    LESPE

    Lespedeza

    lespedeza

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    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

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    Ap—0 to 18 centimeters (0.0 to 7.1 inches); very dark gray (10YR 3/1) and very dark grayish brown (10YR 3/2) silty clay; weak very fine granular, and moderate fine and medium angular blocky structure; very hard; fragments; slightly acid, pH 6.3, hellige-truog; abrupt smooth boundary. Lab sample # 40A15732
    A3—18 to 36 centimeters (7.1 to 14.2 inches); very dark gray (2.5Y 3/1) silty clay, clay; dark yellowish brown (10YR 4/4) distinct and 1 percent dark yellowish brown (10YR 3/4) fine faint mottles; weak medium prismatic parts to moderate medium angular blocky structure; extremely firm*; fragments; neutral, pH 6.9, hellige-truog; gradual smooth boundary. Lab sample # 40A15733
    B21g—36 to 61 centimeters (14.2 to 24.0 inches); dark gray (2.5Y 4/1) silty clay, clay; 1 percent yellowish brown (10YR 5/6) fine faint and 3 percent dark yellowish brown (10YR 4/4) fine and medium distinct mottles; weak medium prismatic parts to moderate medium and coarse angular blocky structure; extremely firm*; fragments; neutral, pH 6.9, hellige-truog; gradual smooth boundary. Lab sample # 40A15734
    B22g—61 to 84 centimeters (24.0 to 33.1 inches); dark gray (5Y 4/1) silty clay, clay; yellowish brown (10YR 5/6) and 3 percent yellowish brown (10YR 5/4) fine and medium distinct mottles; weak coarse prismatic parts to moderate medium angular blocky structure; extremely firm*; 1 percent fine iron-manganese concretions; fragments; neutral, pH 6.9, hellige-truog; gradual smooth boundary. Lab sample # 40A15735
    B23g—84 to 102 centimeters (33.1 to 40.2 inches); gray (5Y 5/1) silty clay, clay; 3 percent yellowish brown (10YR 5/6) fine and medium distinct mottles; weak coarse prismatic parts to weak and moderate medium angular blocky structure; extremely firm*; 1 percent iron-manganese concretions; fragments; slightly alkaline, pH 7.6, hellige-truog; abrupt wavy boundary. Lab sample # 40A15736
    B24g—102 to 117 centimeters (40.2 to 46.1 inches); gray (5Y 5/1) silty clay, clay; 3 percent yellowish brown (10YR 5/6) fine and medium distinct mottles; weak coarse prismatic parts to weak and moderate medium angular blocky structure; extremely firm*; 1 percent iron-manganese concretions; fragments; slightly alkaline, pH 7.6, hellige-truog; abrupt wavy boundary. Lab sample # 40A15737. Separated for sampling purposes.
    B3g—117 to 142 centimeters (46.1 to 55.9 inches); gray (5Y 5/1) silty clay loam; strong brown (7.5YR 5/6) and 21 percent brown (7.5YR 4/4) fine distinct mottles; weak medium and coarse angular blocky structure; very firm; fragments; slightly alkaline, pH 7.6, hellige-truog; gradual smooth boundary. Lab sample # 40A15738
    Cg—142 to 173 centimeters (55.9 to 68.1 inches); gray (5Y 5/1) silty clay loam; yellowish brown (10YR 5/8) and 21 percent yellowish brown (10YR 5/6) fine and medium distinct mottles; massive; firm; fragments; slightly alkaline, pH 7.6, hellige-truog. Lab sample # 40A15739