IDENTIFIERS

  • Current Taxon Name (Soil Name): BLACKOAR
  • OSD
  • Series Extent
  • User Site ID: 2004MO111050
  • User Pedon ID: 2004MO111050
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M0411150
  • NCSS Pedon Lab Data NASIS Record ID - 25209
  • Print Date: 11/21/2024

    • 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: 40.2025000
  • Std. Longitude: -91.8405556
  • Datum: WGS84
  • Township: T62N
  • Range: R9W
  • Section: 1
  • PLSS Details: 1636 feet and 2793 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-silty, mixed, superactive, mesic Typic Epiaqualfs
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 50
  • Sampled As Information:
  • Soil Name - BLACKOAR
  • Taxonomic Class - Fine-silty, mixed, superactive, mesic Typic Epiaqualfs
  • PSC - 20 to 71 cm.
  • Classificaton Date - 2/24/2004
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - aquic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: fine-silty 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: linear
  • Slope Shape Down: linear
  • Runoff: negligible
  • Drainage Class: 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

    ochric epipedon

    argillic horizon

    0—20

    20—203

    —20—

    —183—
    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

    0.6

    —

    —

    183.2

    —

    206

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 20 centimeters (0.0 to 7.9 inches); dark grayish brown (10YR 4/2) rubbed silt loam; 5 percent sand; 73 percent silt; 22 percent clay; weak very fine subangular blocky structure; friable; 10.0 fine roots throughout; 10.0 fine tubular pores; 10 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 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 # MU000566; observed in push tube
    Btg1—20 to 36 centimeters (7.9 to 14.2 inches); dark grayish brown (10YR 4/2) broken face silt loam; 26 percent sand; 55 percent silt; 19 percent clay; moderate very fine subangular blocky structure; friable; 10.0 fine roots between peds; 10.0 fine tubular pores; 5 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented dark brown (7.5YR 3/4), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU000567; observed in push tube
    Btg2—36 to 61 centimeters (14.2 to 24.0 inches); dark grayish brown (10YR 4/2) broken face silt loam; 25 percent sand; 58 percent silt; 17 percent clay; moderate fine subangular blocky structure; firm; 10.0 fine roots between peds; 10.0 fine tubular pores; 25 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented dark brown (7.5YR 3/4), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU000568; observed in push tube
    Btg3—61 to 86 centimeters (24.0 to 33.9 inches); 60 percent dark grayish brown (10YR 4/2) broken face and 40 percent dark gray (10YR 4/1) broken face silt loam; 31 percent sand; 54 percent silt; 15 percent clay; weak medium subangular blocky structure; firm; 3.0 fine roots between peds; 10.0 fine tubular pores; 20 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix; fragments; gradual smooth boundary. Lab sample # MU000569; observed in push tube
    Btg4—86 to 122 centimeters (33.9 to 48.0 inches); 70 percent gray (10YR 5/1) broken face and 30 percent grayish brown (10YR 5/2) broken face silt loam; 32 percent sand; 51 percent silt; 18 percent clay; weak fine subangular blocky structure; firm; 3.0 fine roots between peds; 10.0 fine tubular pores; 20 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU000570; observed in push tube
    Btg5—122 to 165 centimeters (48.0 to 65.0 inches); 80 percent gray (10YR 5/1) broken face and 20 percent strong brown (7.5YR 5/6) broken face silt loam; 24 percent sand; 53 percent silt; 23 percent clay; weak medium subangular blocky structure; firm; 0.5 fine roots between peds; 10.0 fine tubular pores; 30 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds; fragments; clear smooth boundary. Lab sample # MU000571; observed in push tube
    Btg6—165 to 203 centimeters (65.0 to 79.9 inches); 60 percent gray (10YR 5/1) broken face and 40 percent brown (7.5YR 4/4) broken face loam; 43 percent sand; 41 percent silt; 17 percent clay; weak fine subangular blocky, and weak fine prismatic structure; firm; 10.0 fine tubular pores; 30 percent distinct dark gray (10YR 4/1), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented brown (7.5YR 4/4), moist, iron depletions with clear boundaries in matrix; fragments. Lab sample # MU000572; observed in push tube