IDENTIFIERS

  • Current Taxon Name (Soil Name): Harpster
  • OSD
  • Series Extent
  • User Site ID: S1964IL053001
  • User Pedon ID: S1964IL053001
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 40A0170
  • NCSS Pedon Lab Data NASIS Record ID - 32699
  • Print Date: 2/17/2025

    • 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: 40.4400278
  • Std. Longitude: -88.4231111
  • Datum: WGS84
  • Township: 23N
  • Range: 7E
  • Section: 20
  • PLSS Details: 855 feet south and 70 feet west of the northeast corner
  • Location Description: Ford County, Ill. About 150 km (95 mi.) SW. of Chicago.
  • State: Illinois
  • County: IL053—Ford
  • MLRA: 108—Illinois and Iowa Deep Loess and Drift
  • Non-MLRA Soil Survey Area: IL053—Ford County, Illinois
  • 7.5 Minute USGS Quad: 40088-D4—Gibson City West, Illinois

    • PEDON

  • Describers Name: J.B. Fehrenbacher, G.O. Walker
  • Current Taxonomic Class: Fine-silty, mixed, superactive, mesic Typic Calciaquolls
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Harpster (flagged as OSD)
  • PSC - 25 to 100 cm.
  • Classificaton Date - 6/19/2014
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - aquic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Harpster
  • Taxonomic Class - Fine-silty, mixed (calcareous), mesic Typic Haplaquolls
  • Taxon Kind - series
  • Classificaton Date - 11/1/1964
  • Classifier - JBF and GOW
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: calcareous loess over glacial drift
  • Hill Slope Profile: toeslope
  • Runoff: negligible
  • Drainage Class: poorly
  • Surface Fragments:
  • Benchmark Soil?: yes

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/17/1964 (actual site observation date)
  • 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
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    calcic horizon

    cambic horizon

    aquic conditions

    0—46

    0—46

    46—104

    46—152

    —46—

    —46—

    —58—

    —106—
    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

    —

    —

    225

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Akp—0 to 23 centimeters (0.0 to 9.1 inches); black (10YR 2/1), dark gray (10YR 4/1), dry; silty clay loam; weak fine granular structure; friable; common (4.0) very fine roots; 25 percent shell fragments throughout; fragments; strong effervescence; moderately alkaline, pH 7.9; abrupt smooth boundary. Lab sample # 40A01256
    Ak—23 to 46 centimeters (9.1 to 18.1 inches); very dark gray (10YR 3/1), gray (10YR 5/1), dry; silty clay loam; weak fine granular, and weak medium granular structure; firm; common (4.0) very fine roots; 25 percent shell fragments throughout; fragments; strong effervescence; moderately alkaline, pH 8.0; clear smooth boundary. Lab sample # 40A01257
    Bg1—46 to 64 centimeters (18.1 to 25.2 inches); dark grayish brown (2.5Y 4/2) silty clay loam; weak fine angular blocky, and weak medium angular blocky structure; firm; common (2.0) very fine roots; 60 percent distinct very dark gray (10YR 3/1), moist, organic stains on all faces of peds; 10 percent fine distinct light olive brown (2.5Y 5/4), moist, masses of oxidized iron in matrix; 1 percent shell fragments throughout; fragments; slight effervescence; moderately alkaline, pH 8.0; gradual smooth boundary. Lab sample # 40A01258
    Bg2—64 to 79 centimeters (25.2 to 31.1 inches); dark gray (5Y 4/1) silty clay loam; moderate medium prismatic parts to moderate fine angular blocky, and moderate medium prismatic parts to moderate medium angular blocky structure; firm; few (0.5) very fine roots; 60 percent distinct very dark gray (10YR 3/1), moist, organic stains on all faces of peds; 1 percent fine prominent dark yellowish brown (10YR 4/4), moist, iron-manganese masses in matrix and 1 percent fine distinct olive (5Y 4/4), moist, iron-manganese masses in matrix; 1 percent shell fragments throughout; fragments; slight effervescence; slightly alkaline, pH 7.6; gradual smooth boundary. Lab sample # 40A01259
    Bg3—79 to 91 centimeters (31.1 to 35.8 inches); dark gray (5Y 4/1) silty clay loam; weak coarse prismatic parts to weak medium angular blocky structure; firm; few (0.5) very fine roots; 30 percent distinct very dark gray (10YR 3/1), moist, organic stains on all faces of peds; 1 percent fine prominent yellowish brown (10YR 5/6), moist, masses of oxidized iron in matrix and 10 percent medium distinct olive (5Y 4/4), moist, iron-manganese masses in matrix; 2 percent by volume subrounded very strongly coherent cemented 2-3-5 millimeter mixed fragments; slight effervescence; slightly alkaline, pH 7.6; gradual smooth boundary. Lab sample # 40A01260
    Bg4—91 to 104 centimeters (35.8 to 40.9 inches); 40 percent olive brown (2.5Y 4/4) and 35 percent olive yellow (2.5Y 6/6) and 25 percent gray (5Y 5/1) silty clay loam; weak coarse angular blocky structure; firm; few (0.5) very fine roots; 2 percent by volume subrounded very strongly coherent cemented 2-3-5 millimeter mixed fragments; slight effervescence; slightly alkaline, pH 7.6; gradual smooth boundary. Lab sample # 40A01261
    Cg1—104 to 142 centimeters (40.9 to 55.9 inches); 55 percent gray (5Y 5/1) and 40 percent light olive brown (2.5Y 5/6) and 5 percent dark yellowish brown (10YR 4/4) silt loam; structureless massive; firm; 1 percent by volume subrounded very strongly coherent cemented 2-3-5 millimeter mixed fragments; strong effervescence; moderately alkaline, pH 7.9; clear smooth boundary. Lab sample # 40A01262
    2Cg2—142 to 152 centimeters (55.9 to 59.8 inches); gray (10YR 5/1) loam; structureless massive; friable; 5 percent by volume subrounded very strongly coherent cemented 2-3-5 millimeter mixed fragments; strong effervescence; moderately alkaline, pH 8.0.