IDENTIFIERS

  • Current Taxon Name (Soil Name): Rocheport
  • OSD
  • Series Extent
  • User Site ID: 1992MO019055
  • User Pedon ID: 1992MO019055
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9201955
  • NCSS Pedon Lab Data NASIS Record ID - 34272
  • 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: 38.6870556
  • Std. Longitude: -92.2630000
  • Datum: WGS84
  • Range: R12W
  • Section: 15
  • Location Description: 2120 feet west and 40 feet south of the northeast corner of sec. 15, T.45 N., R. 12 W; USGS Hartsburg 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 Mark Osborne
  • Current Taxonomic Class: Fine-silty, mixed, superactive, mesic Oxyaquic 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 - Rocheport (flagged as OSD)
  • Classificaton Date - 11/4/2014
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Subclass - oxyaquic
  • Sampled As Information:
  • Soil Name - Bucklick
  • Classificaton Date - 4/15/1992
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess and/or residuum
  • Landscape: hills
  • Landform: hillside
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: lower third
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: very high
  • Drainage Class: moderately well
  • Bedrock: h slight weathered dolomite (dolostone) with <10
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/15/1992 (actual site observation date)
  • Air Photo ID: 50
  • 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

    ochric epipedon

    argillic horizon

    lithic contact

    0—10

    13—122

    132—203

    —-

    —-

    —-
    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

    17

    —

    —

    —

    —

    45

    914

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 1 centimeters (0.0 to 0.4 inches); fragments.
    A—1 to 4 centimeters (0.4 to 1.6 inches); black (10YR 2/1) and dark brown (10YR 3/3) silt loam; moderate very fine granular, and subangular blocky structure; very friable; 10.0 very fine roots and 0.5 medium roots and 10.0 fine roots; fragments; slightly acid, pH 6.4, hellige-truog; abrupt wavy boundary. Lab sample # MU044340. (Note: The colors in this horizon are mixed.)
    E—4 to 14 centimeters (1.6 to 5.5 inches); brown (10YR 5/3) silt loam; moderate fine platy parts to weak very fine subangular blocky structure; very friable; 10.0 very fine to medium roots and 3.0 coarse roots; 10 percent fine yellowish brown (10YR 5/6) masses of oxidized iron; fragments; moderately acid, pH 6.0, hellige-truog; clear smooth boundary. Lab sample # MU044341
    Bt1—14 to 31 centimeters (5.5 to 12.2 inches); yellowish brown (10YR 5/6) silty clay loam; moderate very fine and fine subangular blocky structure; friable; 0.5 very fine roots and 10.0 medium and coarse roots and 3.0 fine roots; 60 percent faint yellowish brown (10YR 5/4) clay films on faces of peds; fragments; very strongly acid, pH 5.0, hellige-truog; diffuse boundary. Lab sample # MU044342
    Bt2—31 to 47 centimeters (12.2 to 18.5 inches); yellowish brown (10YR 5/6) silty clay loam; 1 percent brown (10YR 5/3) fine mottles; moderate fine subangular blocky structure; firm; 0.5 very fine roots and 0.5 medium and coarse roots and 3.0 fine roots; 15 percent distinct brown (10YR 5/3) clay films on faces of peds and 35 percent distinct yellowish brown (10YR 5/4) and 60 percent manganese or iron-manganese stains; 1 percent fine iron-manganese concretions; fragments; very strongly acid, pH 5.0, hellige-truog; gradual smooth boundary. Lab sample # MU044343
    Bt3—47 to 77 centimeters (18.5 to 30.3 inches); yellowish brown (10YR 5/6) silty clay loam; pale brown (10YR 6/3) and 1 percent gray (10YR 5/1) coarse and 25 percent light brownish gray (10YR 6/2) fine mottles; weak fine subangular blocky structure; firm; 0.5 very fine to medium roots; 60 percent faint clay films on faces of peds; 10 percent fine iron-manganese concretions; fragments; strongly acid, pH 5.5, hellige-truog; gradual wavy boundary. Lab sample # MU044344
    2Bt4—77 to 100 centimeters (30.3 to 39.4 inches); pale brown (10YR 6/3) silty clay; moderate fine prismatic parts to moderate very fine and fine subangular blocky structure; firm; 0.5 very fine and fine roots; distinct clay films on faces of peds and 35 percent manganese or iron-manganese stains and 60 percent faint and 60 percent faint pressure faces; 10 percent fine and medium iron-manganese concretions; 2 percent by volume 2-39-75 millimeter unspecified fragments; neutral, pH 7.0, hellige-truog; clear wavy boundary. Lab sample # MU044345
    2Bt5—100 to 123 centimeters (39.4 to 48.4 inches); yellowish brown (10YR 5/8) and brownish yellow (10YR 6/8) clay; light brownish gray (10YR 6/2) and 25 percent pale brown (10YR 6/3) coarse mottles; weak fine prismatic parts to moderate fine subangular blocky structure; firm; 0.5 very fine and fine roots; 15 percent distinct yellowish brown (10YR 5/6) clay films and 35 percent faint and 35 percent distinct manganese or iron-manganese stains; fragments; slightly alkaline, pH 7.6, hellige-truog; abrupt smooth boundary. Lab sample # MU044346. (Note: There are a few streaks of white 2.5Y 8/0.)
    2Cr—123 to 133 centimeters (48.4 to 52.4 inches); light gray (2.5Y 7/2) silt loam; very firm; 0.5 very fine roots in cracks; 25 percent coarse brownish yellow (10YR 6/6) masses of oxidized iron; fragments; slight effervescence, by hcl, unspecified; moderately alkaline, pH 7.9, hellige-truog; abrupt smooth boundary. Lab sample # MU044347. (Note: The saprolite crushes to silt loam with residual gravel.)
    2R—133 centimeters (52.4 inches); fragments.