IDENTIFIERS

  • Current Taxon Name (Soil Name): DARWIN
  • OSD
  • Series Extent
  • User Site ID: 2007MO087013
  • User Pedon ID: 2007MO087013
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M0708713
  • NCSS Pedon Lab Data NASIS Record ID - 25398
  • Print Date: 11/11/2024

    • 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: 39.9091667
  • Std. Longitude: -95.0006944
  • Datum: WGS84
  • Township: T59N
  • Range: R37W
  • Section: 25
  • PLSS Details: 2,060 feet West and 78 feet South from the North East corner
  • Country: US—United States
  • State: Missouri
  • County: MO087—Holt
  • MLRA: 107—Iowa and Missouri Deep Loess Hills
  • Non-MLRA Soil Survey Area: MO087—Holt County, Missouri
  • 7.5 Minute USGS Quad: 39095-H1—Forbes, Missouri

    • PEDON

  • Describers Name: Timothy Knoernschild, Aaron Woods
  • Current Taxonomic Class: Fine, mixed, superactive, noncalcareous, mesic Fluvaquentic Vertic Endoaquolls
  • Current Taxon Kind: variant
  • Pedon Type: map unit inclusion
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 13
  • Sampled As Information:
  • Soil Name - DARWIN
  • Taxonomic Class - Fine, mixed, superactive, noncalcareous, mesic Fluvaquentic Vertic Endoaquolls
  • PSC - 25 to 102 cm.
  • Classificaton Date - 12/4/2007
  • 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: Holocene Stage clayey alluvium derived from mixed
  • Landscape: river valley
  • Landform: flood plain
  • Geomorphic Component Flats: flat
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: concave
  • Runoff: low
  • Drainage Class: poorly
  • Flooding: occasional flooding for brief periods
  • Ponding: rare ponding for very brief periods
  • Geology: Holocene Stage formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/4/2007 (actual site observation date)
  • Air Photo ID: 39095h1se
  • Surface Water Kind: flooded
  • Surface Water Depth: 15
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - other grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion gully
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    cambic horizon

    redox concentrations

    aquic conditions

    0—30

    20—124

    20—208

    20—208

    —30—

    —104—

    —188—

    —188—
    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

    —

    —

    252.4

    —

    84

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark grayish brown (10YR 3/2) broken face silty clay; 16 percent sand; 41 percent silt; 43 percent clay; weak fine angular blocky structure; firm; 10.0 very fine roots and 10.0 fine roots; 0.5 very fine pores; fragments; abrupt smooth boundary. Lab sample # MU002099; observed in push tube
    Bw1—20 to 30 centimeters (7.9 to 11.8 inches); very dark grayish brown (10YR 3/2) broken face silty clay; 4 percent sand; 43 percent silt; 53 percent clay; weak fine angular blocky structure; firm; 10.0 very fine roots and 10.0 fine roots; 0.5 fine pores; 25 percent faint very dark gray (10YR 3/1), moist, organoargillans 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; abrupt smooth boundary. Lab sample # MU002100; observed in push tube
    Bw2—30 to 71 centimeters (11.8 to 28.0 inches); grayish brown (2.5Y 5/2) broken face silty clay; 1 percent sand; 41 percent silt; 58 percent clay; weak fine angular blocky structure; firm; 3.0 very fine roots; 3.0 very fine and 3.0 fine pores; 20 percent faint very dark gray (10YR 3/1), moist, organoargillans on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/8), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU002101; observed in push tube
    Bw3—71 to 81 centimeters (28.0 to 31.9 inches); dark grayish brown (2.5Y 4/2) broken face silty clay; 2 percent sand; 53 percent silt; 45 percent clay; weak fine angular blocky structure; firm; 0.5 very fine roots and 0.5 fine roots; 3.0 fine pores; 10 percent faint dark gray (2.5Y 4/1), moist, clay films on vertical 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 # MU002102; observed in push tube
    Bw4—81 to 124 centimeters (31.9 to 48.8 inches); grayish brown (2.5Y 5/2) broken face clay; 1 percent sand; 30 percent silt; 69 percent clay; weak fine angular blocky structure; firm; 0.5 fine roots; 0.5 very fine pores; 10 percent faint gray (2.5Y 5/1), moist, clay films on vertical faces of peds; 1 percent medium faint irregular noncoherent cemented brown (7.5YR 4/4), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU002103; observed in push tube
    C1—124 to 160 centimeters (48.8 to 63.0 inches); gray (2.5Y 5/1) broken face silty clay loam; 8 percent sand; 63 percent silt; 29 percent clay; massive; firm; 0.5 very fine roots; 3.0 very fine pores; 1 percent medium faint irregular noncoherent cemented light olive brown (2.5Y 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented light olive brown (2.5Y 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/8), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented light gray (2.5Y 7/1), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU002104; observed in push tube
    C2—160 to 178 centimeters (63.0 to 70.1 inches); 50 percent light olive brown (2.5Y 5/3) broken face and 50 percent dark grayish brown (10YR 4/2) broken face silt loam; 29 percent sand; 51 percent silt; 20 percent clay; massive; firm; 0.5 fine roots; 0.5 very fine pores; 1 percent medium faint irregular noncoherent cemented dark red (2.5YR 3/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 5/8), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented gray (2.5Y 6/1), moist, iron depletions with clear boundaries in matrix; fragments; clear smooth boundary. Lab sample # MU002105; observed in push tube
    C3—178 to 208 centimeters (70.1 to 81.9 inches); gray (5Y 5/1) broken face silty clay; 1 percent sand; 52 percent silt; 47 percent clay; massive; firm; 3.0 very fine pores; 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 brown (10YR 5/6), moist, iron depletions with clear boundaries in matrix; fragments. Lab sample # MU002106; observed in push tube