IDENTIFIERS

  • Current Taxon Name (Soil Name): Darwin
  • OSD
  • Series Extent
  • User Site ID: 1978IL013002
  • User Pedon ID: 1978IL013002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - IL SCL
  • Lab Pedon # - 78IL013002
  • NCSS Pedon Lab Data NASIS Record ID - 20959
  • Print Date: 11/26/2024

    • 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: 38.8704095
  • Std. Longitude: -90.5896278
  • Datum: WGS84
  • Township: 14S
  • Range: 2W
  • Section: 1
  • Location Description: 480FT W of IL River,65FT S of center of road
  • State: Illinois
  • County: IL013—Calhoun
  • MLRA: 115—Central Mississippi Valley Wooded Slopes
  • Non-MLRA Soil Survey Area: IL013—Calhoun County, Illinois

    • PEDON

  • Describers Name: MAF, JBF, BWR
  • 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 #: 2
  • 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 - 7/1/1978
  • 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: negligible
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1978 (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—64

    64—137

    —-

    —-
    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

    0.5

    —

    —

    128

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

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    —
    Overwash—0 to 30 centimeters (0.0 to 11.8 inches); very dark gray (10YR 3/1) silty clay loam; weak medium granular structure; firm; 0.6 roots between peds; fragments; abrupt smooth boundary. Lab sample # IL23352
    Ap—30 to 48 centimeters (11.8 to 18.9 inches); very dark gray (10YR 3/1) silty clay; moderate medium granular structure; firm; 0.6 roots between peds; fragments; clear smooth boundary. Lab sample # IL23353
    A12—48 to 64 centimeters (18.9 to 25.2 inches); black (10YR 2/1) silty clay; moderate coarse granular parts to moderate medium angular blocky structure; firm; 0.6 roots between peds; fragments; clear smooth boundary. Lab sample # IL23354
    B21g—64 to 89 centimeters (25.2 to 35.0 inches); very dark gray (10YR 3/1) silty clay; weak medium prismatic parts to moderate medium angular blocky structure; firm; 0.6 roots between peds; fragments; clear smooth boundary. Lab sample # IL23355
    B22g—89 to 102 centimeters (35.0 to 40.2 inches); dark grayish brown (10YR 4/2) silty clay; weak medium prismatic parts to moderate medium angular blocky structure; firm; 0.6 roots between peds; distinct very dark gray (10YR 3/1), moist, clay films on all faces of peds; fragments; clear smooth boundary. Lab sample # IL23356
    B31g—102 to 122 centimeters (40.2 to 48.0 inches); grayish brown (2.5Y 5/2) silty clay; 1 percent brown (10YR 4/3) medium prominent mottles; weak medium angular blocky structure; firm; 0.6 roots between peds; 1 percent fine prominent black (10YR 2/1), moist, iron-manganese concretions in matrix; fragments; clear smooth boundary. Lab sample # IL23357
    B32g—122 to 137 centimeters (48.0 to 53.9 inches); grayish brown (2.5Y 5/2) silty clay; 10 percent olive brown (2.5Y 4/4) medium faint mottles; weak medium angular blocky structure; firm; 0.6 roots between peds; 1 percent fine prominent black (10YR 2/1), moist, iron-manganese concretions in matrix; 1 percent by volume angular weakly coherent cemented shell fragments fragments; slight effervescence, by hcl, unspecified; slightly alkaline, pH 7.6; clear smooth boundary. Lab sample # IL23358
    C1g—137 to 145 centimeters (53.9 to 57.1 inches); grayish brown (2.5Y 5/2) silty clay loam; 10 percent olive brown (2.5Y 4/4) medium faint mottles; structureless massive; firm; 1 percent fine prominent black (10YR 2/1), moist, iron-manganese concretions in matrix; 1 percent fine prominent white (10YR 8/1), moist, carbonate concretions in matrix; 1 percent by volume angular weakly coherent cemented shell fragments fragments; strong effervescence, by hcl, unspecified; slightly alkaline, pH 7.6; abrupt smooth boundary. Lab sample # IL23359
    C2g—145 to 165 centimeters (57.1 to 65.0 inches); light brownish gray (2.5Y 6/2) and olive brown (2.5Y 4/4) stratified stratified silty clay; 1 percent dark yellowish brown (10YR 4/6) coarse prominent mottles; structureless massive; firm; 1 percent fine prominent black (10YR 2/1), moist, iron-manganese concretions in matrix; 10 percent fine prominent white (10YR 8/1), moist, carbonate concretions in matrix; 1 percent by volume angular weakly coherent cemented shell fragments fragments. Lab sample # IL23360