IDENTIFIERS

  • Current Taxon Name (Soil Name): BLACKOAR
  • OSD
  • Series Extent
  • User Site ID: 2004MO111052
  • User Pedon ID: 2004MO111052
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M0411152
  • NCSS Pedon Lab Data NASIS Record ID - 25210
  • Print Date: 2/16/2025

    • 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: 40.2027778
  • Std. Longitude: -91.8352778
  • Datum: WGS84
  • Township: T62N
  • Range: R9W
  • Section: 1
  • PLSS Details: 186 feet and 2931 feet from the South East corner
  • Country: US—United States
  • State: Missouri
  • County: MO111—Lewis
  • MLRA: 115—Central Mississippi Valley Wooded Slopes
  • Non-MLRA Soil Survey Area: MO111—Lewis County, Missouri
  • 7.5 Minute USGS Quad: 40091-B7—Williamstown, Missouri

    • PEDON

  • Describers Name: Greg Caldwell, David Dowdy, Wesley Simmons
  • Current Taxonomic Class: Fine, mixed, superactive, mesic Aquertic Argiudolls
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 52
  • Sampled As Information:
  • Soil Name - BLACKOAR
  • Taxonomic Class - Fine, mixed, superactive, mesic Aquertic Argiudolls
  • PSC - 58 to 109 cm.
  • Classificaton Date - 2/24/2004
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - udic
  • Moisture SUBClass - aquic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: clayey alluvium derived from mixed
  • Landscape: alluvial plain
  • Landform: flood-plain step
  • Geomorphic Component Flats: flat
  • Hill Slope Profile: toeslope
  • Slope Position: lower third
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: low
  • Drainage Class: somewhat poorly
  • Flooding: occasional flooding for very brief periods
  • Ponding: none ponding
  • Geology: Holocene Stage formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/24/2004 (actual site observation date)
  • Air Photo ID: 40091b7nw
  • Surface Water Kind: flooded
  • Surface Water Depth: 15
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: landslip erosion highly deformed
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    0—25

    58—190

    —25—

    —132—
    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

    2

    —

    —

    179.5

    —

    331

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 25 centimeters (0.0 to 9.8 inches); dark brown (10YR 3/3) rubbed silt loam; 25 percent sand; 61 percent silt; 14 percent clay; weak fine subangular blocky structure; friable; 0.5 medium roots throughout and 10.0 fine roots throughout; 10.0 fine tubular pores; 40 percent distinct very dark grayish brown (10YR 3/2), moist, organic stains on all faces of peds; fragments; clear smooth boundary. Lab sample # MU000573; observed in push tube
    E1—25 to 43 centimeters (9.8 to 16.9 inches); yellowish brown (10YR 5/4) broken face silt loam; 39 percent sand; 51 percent silt; 10 percent clay; weak medium subangular blocky structure; friable; 10.0 fine roots throughout; 10.0 fine tubular pores; 5 percent distinct grayish brown (10YR 5/2), moist, silt coats on all faces of peds and 20 percent distinct very dark grayish brown (10YR 3/2), moist, organic stains on all faces of peds; 1 percent medium faint irregular noncoherent cemented dark yellowish brown (10YR 4/6), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU000574; observed in push tube
    E2—43 to 58 centimeters (16.9 to 22.8 inches); 50 percent yellowish brown (10YR 5/4) broken face and 50 percent brown (10YR 5/3) broken face loam; 44 percent sand; 47 percent silt; 9 percent clay; weak medium subangular blocky structure; friable; 10.0 fine roots throughout; 10.0 fine tubular pores; 30 percent distinct light brownish gray (10YR 6/2), moist, silt coats on all faces of peds; 1 percent medium faint irregular noncoherent cemented yellowish red (5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU000575; observed in push tube
    Bt1—58 to 81 centimeters (22.8 to 31.9 inches); yellowish brown (10YR 5/4) broken face loam; 49 percent sand; 38 percent silt; 12 percent clay; weak fine subangular blocky structure; friable; 0.5 fine roots between peds; 3.0 fine tubular pores; 10 percent prominent dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds and 20 percent distinct light brownish gray (10YR 6/2), moist, silt coats on all faces of peds; 1 percent medium faint irregular noncoherent cemented yellowish brown (10YR 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary.; observed in push tube
    Bt2—81 to 94 centimeters (31.9 to 37.0 inches); yellowish brown (10YR 5/4) broken face loam; 49 percent sand; 36 percent silt; 16 percent clay; weak fine subangular blocky structure; friable; 0.5 fine roots between peds; 3.0 fine tubular pores; 5 percent distinct light brownish gray (10YR 6/2), moist, silt coats on all faces of peds and 25 percent prominent dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU000577; observed in push tube
    Bt3—94 to 122 centimeters (37.0 to 48.0 inches); yellowish brown (10YR 5/4) broken face loam; 43 percent sand; 39 percent silt; 18 percent clay; fine subangular blocky, and weak medium prismatic structure; friable; 0.5 fine roots between peds; 3.0 fine tubular pores; 5 percent distinct light brownish gray (10YR 6/2), moist, silt coats on all faces of peds and 30 percent prominent dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU000578; observed in push tube
    Bt4—122 to 190 centimeters (48.0 to 74.8 inches); 70 percent yellowish brown (10YR 5/4) broken face and 30 percent grayish brown (10YR 5/2) broken face loam; 33 percent sand; 49 percent silt; 18 percent clay; medium subangular blocky, and weak medium prismatic structure; firm; 40 percent prominent dark gray (10YR 4/1), moist,; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented grayish brown (10YR 5/2), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU000579; observed in push tube
    BC—190 to 203 centimeters (74.8 to 79.9 inches); 60 percent yellowish brown (10YR 5/4) broken face and 40 percent grayish brown (10YR 5/2) broken face fine sandy loam; 53 percent sand; 33 percent silt; 14 percent clay; weak medium prismatic structure; firm; 1 percent medium faint irregular noncoherent cemented yellowish brown (10YR 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments. Lab sample # MU000580; observed in push tube