IDENTIFIERS

  • Current Taxon Name (Soil Name): Bonnefemme
  • OSD
  • Series Extent
  • User Site ID: 1992MO019068
  • User Pedon ID: 1992MO019068
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9201968
  • NCSS Pedon Lab Data NASIS Record ID - 26634
  • Print Date: 11/14/2025

    • 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: 38.6949072
  • Std. Longitude: -92.2354970
  • Datum: WGS84
  • Range: R12W
  • Section: 12
  • Location Description: 2250 feet south and 200 feet east of the northwest corner of sec. 12, T. 45 N., R. 12 W.; Jefferson City NW Quadrangle.
  • Map Unit: 60038—Rocheport-Bonnefemme complex, 14 to 25 percent slopes
  • State: Missouri
  • County: MO019—Boone
  • MLRA: 115—Central Mississippi Valley Wooded Slopes
  • Non-MLRA Soil Survey Area: MO019—Boone County, Missouri

    • PEDON

  • Describers Name: Fred Young
  • Current Taxonomic Class: Fine, smectitic, mesic Typic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Bonnefemme (flagged as OSD)
  • Classificaton Date - 11/4/2014
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Caneyville
  • Classificaton Date - 5/29/1992
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess and/or residuum weathered from limestone
  • Landscape: hills
  • Landform: hillside
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/29/1992 (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

    25—71

    —-
    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

    —

    —

    —

    —

    240

    914

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 1 centimeters (0.0 to 0.4 inches); fragments.
    A—1 to 4 centimeters (0.4 to 1.6 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; silt loam; moderate very fine subangular blocky structure; very friable; 10.0 very fine roots and 0.5 fine roots; fragments; slightly acid, pH 6.2, hellige-truog; abrupt wavy boundary. Lab sample # MU010853
    E—4 to 19 centimeters (1.6 to 7.5 inches); light yellowish brown (10YR 6/4) silt loam; weak fine subangular blocky structure; very friable; 10.0 very fine and fine roots and 3.0 medium roots and 0.5 coarse roots; fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU010854
    BE—19 to 26 centimeters (7.5 to 10.2 inches); yellowish brown (10YR 5/6) silt loam; weak fine subangular blocky structure; very friable; 3.0 very fine to medium roots and 0.5 coarse roots; fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU010855
    Bt1—26 to 44 centimeters (10.2 to 17.3 inches); yellowish brown (10YR 5/6) silty clay loam; weak medium prismatic parts to moderate fine subangular blocky structure; friable; 0.5 very fine roots and 3.0 fine and medium roots and 0.5 coarse roots; 35 percent faint clay films on faces of peds and 35 percent faint silt coats on faces of peds; fragments; very strongly acid, pH 4.7, hellige-truog; clear smooth boundary. Lab sample # MU010856
    2Bt2—44 to 72 centimeters (17.3 to 28.3 inches); strong brown (7.5YR 5/6) silty clay; weak medium prismatic parts to moderate very fine and fine subangular blocky structure; firm; 0.5 very fine roots and 0.5 medium and coarse roots and 3.0 fine roots; 35 percent distinct clay films on faces of peds; 5 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.6, hellige-truog. Lab sample # MU010857
    2R—72 centimeters (28.3 inches); fragments.