IDENTIFIERS

  • Current Taxon Name (Soil Name): Darwin
  • OSD
  • Series Extent
  • User Site ID: 1978IL119058
  • User Pedon ID: 1978IL119058
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - IL SCL
  • Lab Pedon # - 78IL119058
  • NCSS Pedon Lab Data NASIS Record ID - 20982
  • Print Date: 11/23/2024

    • 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: 38.7339619
  • Std. Longitude: -90.0563077
  • Datum: WGS84
  • Township: 3N
  • Range: 9W
  • Section: 1
  • PLSS Details: 935 feet N & 265 feet E of the SW corner
  • State: Illinois
  • County: IL119—Madison
  • MLRA: 115—Central Mississippi Valley Wooded Slopes
  • Non-MLRA Soil Survey Area: IL119—Madison County, Illinois
  • 7.5 Minute USGS Quad: 38090-F1—Monks Mound, Illinois

    • PEDON

  • Current Taxonomic Class: Fine, smectitic, mesic Fluvaquentic Vertic Endoaquolls
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: soil survey inventory
  • Pedon Record Orgin: PedonPC
  • Pedon #: 58
  • Correlated Information:
  • Soil Name - Darwin
  • PSC - 25 to 100 cm.
  • Classificaton Date - 1/4/2010
  • Moisture Class - aquic
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Darwin
  • Classificaton Date - 10/1/1977
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: clayey alluvium
  • Landscape: river valley
  • Landform: flood plain
  • Runoff: low
  • Drainage Class: poorly
  • Flooding: occasional flooding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/1/1977 (actual site observation date)
  • Air Photo ID:
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Yield Study ID -
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    cambic horizon

    0—41

    41—155

    —-

    —-
    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

    —

    —

    128

    —

    —

    —

    —

    —

    —

    —

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    —
    Ap—0 to 23 centimeters (0.0 to 9.1 inches); very dark gray (10YR 3/1) silty clay; weak fine granular parts to moderate medium subangular blocky structure; firm; fragments; neutral, pH 7.0; clear smooth boundary. Lab sample # IL25906
    A3—23 to 41 centimeters (9.1 to 16.1 inches); very dark gray (10YR 3/1) silty clay; 1 percent yellowish brown (10YR 5/6) fine distinct mottles; weak medium subangular blocky parts to moderate fine angular blocky structure; very firm; 1 percent fine faint spherical iron-manganese concretions in matrix; fragments; slightly acid, pH 6.3; clear smooth boundary.
    B21—41 to 56 centimeters (16.1 to 22.0 inches); dark gray (5Y 4/1) silty clay; 10 percent yellowish brown (10YR 5/6) fine distinct mottles; moderate medium subangular blocky structure; very firm; prominent very dark gray (10YR 3/1), moist, clay films on all faces of peds; 1 percent fine prominent spherical iron-manganese concretions in matrix; fragments; slightly acid, pH 6.3; clear smooth boundary. continuous - phpvsfiid 480629; continuous - phpvsfiid 480629
    B22—56 to 79 centimeters (22.0 to 31.1 inches); dark gray (10YR 4/1) silty clay; 25 percent yellowish brown (10YR 5/6) medium distinct mottles; moderate medium subangular blocky structure; very firm; faint very dark gray (10YR 3/1), moist, clay films on all faces of peds; fragments; slightly acid, pH 6.3; clear smooth boundary. continuous - phpvsfiid 480630; continuous - phpvsfiid 480630
    B23—79 to 97 centimeters (31.1 to 38.2 inches); dark gray (5Y 4/1) silty clay; 25 percent yellowish brown (10YR 5/6) medium distinct mottles; weak medium prismatic parts to weak medium subangular blocky structure; very firm; fragments; neutral, pH 7.0; clear smooth boundary.
    B31—97 to 132 centimeters (38.2 to 52.0 inches); very dark gray (5Y 3/1) silty clay; 10 percent yellowish brown (10YR 5/6) fine distinct and 10 percent olive brown (2.5Y 4/4) medium distinct mottles; weak medium prismatic structure; very firm; 1 percent fine prominent spherical iron-manganese concretions in matrix; fragments; neutral, pH 7.0; clear smooth boundary. Lab sample # IL25907
    B32—132 to 155 centimeters (52.0 to 61.0 inches); dark gray (5Y 4/1) silty clay; 10 percent yellowish brown (10YR 5/6) fine distinct mottles; prismatic structure; very firm; 1 percent fine prominent spherical iron-manganese concretions in matrix; fragments; neutral, pH 7.0.