IDENTIFIERS

  • Current Taxon Name (Soil Name): DARWIN
  • OSD
  • Series Extent
  • User Site ID: 2008MO089063
  • User Pedon ID: 2008MO089063
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M0808963
  • NCSS Pedon Lab Data NASIS Record ID - 25286
  • Print Date: 2/17/2025

    • 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: 39.0126944
  • Std. Longitude: -92.8391111
  • Datum: WGS84
  • Country: US—United States
  • State: Missouri
  • County: MO089—Howard
  • MLRA: 115—Central Mississippi Valley Wooded Slopes
  • Non-MLRA Soil Survey Area: MO089—Howard County, Missouri
  • 7.5 Minute USGS Quad: 39092-A7—Franklin, Missouri

    • PEDON

  • Describers Name: Greg Caldwell, LeAnn Bullard
  • Current Taxonomic Class: Very-fine, smectitic, mesic Fluvaquentic Vertic Endoaquolls
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 63
  • Correlated Information:
  • Soil Name - DARWIN
  • PSC - 25 to 102 cm.
  • Classificaton Date - 7/24/2012
  • Soil Taxonomic Edition - first edition
  • Moisture Class - aquic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - CARLOW
  • Classificaton Date - 6/9/2008
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: clayey alluvium derived from mixed
  • Landscape: river valley
  • Landform: flood-plain step
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: very poorly
  • Flooding: occasional flooding for long periods
  • Ponding: none ponding
  • Geology: Holocene Stage formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/9/2008 (actual site observation date)
  • Air Photo ID: 39092a7
  • Surface Water Kind: flooded
  • Surface Water Depth: 15
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion sheet
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    cambic horizon

    0—28

    28—203

    —28—

    —175—
    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

    1

    —

    —

    179.8

    —

    0

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 28 centimeters (0.0 to 11.0 inches); very dark grayish brown (10YR 3/2) broken face, dark grayish brown (10YR 4/2) broken face, dry; silty clay; moderate fine subangular blocky structure; very firm; 0.5 fine roots throughout; 0.5 fine low-continuity interstitial pores; fragments; abrupt smooth boundary. Lab sample # MU001128; observed in push tube
    Bg1—28 to 43 centimeters (11.0 to 16.9 inches); dark grayish brown (10YR 4/2) broken face clay; moderate fine subangular blocky structure; very firm; 0.5 fine roots throughout; 0.5 fine low-continuity interstitial pores; 20 percent faint black (10YR 2/1), moist, pressure faces 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 strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU001129; observed in push tube
    Bg2—43 to 64 centimeters (16.9 to 25.2 inches); dark grayish brown (10YR 4/2) broken face clay; weak fine subangular blocky structure; very firm; 0.5 fine low-continuity interstitial pores; 20 percent faint black (10YR 2/1), moist, pressure faces on all faces of peds; 1 percent medium faint irregular noncoherent cemented dark yellowish brown (10YR 3/4), 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 strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix; fragments; gradual smooth boundary. Lab sample # MU001130; observed in push tube
    Bg3—64 to 86 centimeters (25.2 to 33.9 inches); dark gray (10YR 4/1) broken face clay; weak fine subangular blocky structure; very firm; 0.5 fine low-continuity interstitial pores; 20 percent faint black (10YR 2/1), moist, pressure faces on all faces of peds; 1 percent medium faint irregular noncoherent cemented gray (10YR 5/1), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented yellowish red (5YR 5/6), moist, iron depletions with clear boundaries in matrix; fragments; gradual smooth boundary. Lab sample # MU001131; observed in push tube
    Bg4—86 to 114 centimeters (33.9 to 44.9 inches); dark gray (2.5Y 4/1) broken face clay; weak fine subangular blocky structure; very firm; 0.5 fine low-continuity interstitial pores; 20 percent faint black (10YR 2/1), moist, pressure faces 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 and 1 percent medium faint irregular noncoherent cemented dark yellowish brown (10YR 4/4), moist, iron depletions with clear boundaries in matrix; fragments; gradual smooth boundary. Lab sample # MU001132; observed in push tube
    Bg5—114 to 150 centimeters (44.9 to 59.1 inches); dark gray (2.5Y 4/1) broken face clay; weak fine subangular blocky structure; very firm; 0.5 fine low-continuity interstitial pores; 1 percent medium faint irregular noncoherent cemented dark yellowish brown (10YR 4/4), moist, iron depletions with clear boundaries in matrix; fragments; gradual smooth boundary. Lab sample # MU001133; observed in push tube
    Bg6—150 to 203 centimeters (59.1 to 79.9 inches); dark gray (2.5Y 4/1) broken face clay; moderate fine subangular blocky structure; very firm; 0.5 fine low-continuity interstitial pores; 1 percent medium faint irregular noncoherent cemented grayish olive (10Y 5/2), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented dark yellowish brown (10YR 4/4), moist, iron depletions with clear boundaries in matrix; fragments. Lab sample # MU001134; observed in push tube