IDENTIFIERS

  • Current Taxon Name (Soil Name): Bonnefemme
  • OSD
  • Series Extent
  • User Site ID: 1992MO019063
  • User Pedon ID: 1992MO019063
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9201963
  • NCSS Pedon Lab Data NASIS Record ID - 34267
  • Print Date: 11/13/2025

    • 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: 38.6696116
  • Std. Longitude: -92.2236210
  • Datum: WGS84
  • Range: R12W
  • Section: 24
  • Location Description: 150 feet south and 1200 feet west of the NE corner of sec. 24, T.45N.,R.12W.
  • State: Missouri
  • County: MO019—Boone
  • MLRA: 115—Central Mississippi Valley Wooded Slopes

    • PEDON

  • Describers Name: MWO and FJY
  • Current Taxon Kind: series
  • Pedon Type: within range of map unit
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Bonnefemme
  • PSC - 15 to 66 cm.
  • Classificaton Date - 5/27/1992
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from limestone
  • Landscape: hills
  • Landform: hillside
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/27/1992 (actual site observation date)
  • Air Photo ID: 51
  • Surface Cover Properties:
  • 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

    argillic horizon

    lithic contact

    15—79

    79—0

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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

    22

    —

    —

    —

    —

    180

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

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    A—0 to 5 centimeters (0.0 to 2.0 inches); very dark brown (10YR 2/2) silt loam; moderate very fine and fine subangular blocky structure; very friable; 3.0 very fine to medium roots and 0.1 coarse roots; fragments; slightly alkaline, pH 7.5, hellige-truog; clear smooth boundary. Lab sample # MU044374. (Note: There are pockets of moderate very fine granular structure.)
    BE—5 to 15 centimeters (2.0 to 5.9 inches); brown (7.5YR 5/4) silty clay loam; weak fine and medium subangular blocky structure; friable; 3.0 very fine to medium roots and 0.1 coarse roots; fragments; slightly acid, pH 6.3, hellige-truog; clear smooth boundary. Lab sample # MU044375. (Note: Matrix color grades to strong brown (7.5YR 5/6).)
    Bt1—15 to 36 centimeters (5.9 to 14.2 inches); strong brown (7.5YR 4/6) silty clay loam; weak fine prismatic parts to moderate fine subangular blocky structure; firm; 0.1 very fine roots and 3.0 fine to coarse roots; 60 percent distinct dark yellowish brown (10YR 4/4) clay films on faces of peds; fragments; very strongly acid, pH 5.0, hellige-truog; diffuse boundary. Lab sample # MU044376
    Bt2—36 to 53 centimeters (14.2 to 20.9 inches); strong brown (7.5YR 4/6) silty clay loam; moderate medium subangular blocky structure; firm; 0.1 very fine roots and 0.1 medium roots and 3.0 fine roots; 15 percent distinct silt coats on faces of peds and 35 percent distinct brown (7.5YR 4/4) clay films on faces of peds; 1 percent fine dark nodules; fragments; very strongly acid, pH 4.8, hellige-truog; diffuse boundary. Lab sample # MU044377. (Note: The nodules are iron-managese nodules.)
    2Bt3—53 to 79 centimeters (20.9 to 31.1 inches); yellowish red (5YR 4/6) silty clay; moderate very fine and fine subangular blocky structure; firm; 0.5 very fine to medium roots; 15 percent distinct clay films on faces of peds and 15 percent distinct pressure faces and 35 percent organic stains and 60 percent faint reddish brown (5YR 5/4) clay films; 1 percent medium yellowish brown (10YR 5/4) masses of oxidized iron and 25 percent fine iron-manganese concretions; fragments; strongly acid, pH 5.2, hellige-truog; abrupt wavy boundary. Lab sample # MU044378. (Note: There are many fine and medium roots at the lithic contact.)
    R—79 centimeters (31.1 inches); bedrock; fragments.