IDENTIFIERS

  • Current Taxon Name (Soil Name): Darwin
  • OSD
  • Series Extent
  • User Site ID: 1990MO019025
  • User Pedon ID: 1990MO019025
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9001925
  • NCSS Pedon Lab Data NASIS Record ID - 26636
  • 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: 38.9078206
  • Std. Longitude: -92.4332260
  • Datum: WGS84
  • Range: R13W
  • Section: 31
  • Location Description: 2400 feet north and 2300 feet east of the southwest corner of sec. 31, T.48N.,R.13W.
  • State: Missouri
  • County: MO019—Boone
  • MLRA: 115—Central Mississippi Valley Wooded Slopes

    • PEDON

  • Describers Name: F.J. Young
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Darwin
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/20/1990
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium
  • Landform: fluvial terrace
  • Runoff: negligible
  • Drainage Class: very poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/20/1990 (actual site observation date)
  • Air Photo ID: 35
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    cambic horizon

    0—23

    48—170

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    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

    —

    —

    —

    —

    90

    —

    —

    —

    —

    —

    —

    —

    —

    —

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    Ap—0 to 20 centimeters (0.0 to 7.9 inches); black (10YR 2/1), very dark gray (10YR 3/1), dry; silty clay; weak fine subangular blocky, and strong fine granular structure; firm; 0.5 very fine roots; fragments; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # MU010865. (Note: The upper most two inches is strong fine granular.)
    A—20 to 48 centimeters (7.9 to 18.9 inches); black (10YR 2/1), black (10YR 2/1), dry; clay; strong fine subangular blocky structure; firm; 0.5 very fine roots; fragments; neutral, pH 6.8, hellige-truog; gradual smooth boundary. Lab sample # MU010866
    Bg1—48 to 71 centimeters (18.9 to 28.0 inches); dark gray (10YR 4/1) clay; 1 percent dark grayish brown (10YR 4/2) fine mottles; strong very fine subangular blocky structure; firm; 0.5 very fine roots; fragments; neutral, pH 6.9, hellige-truog; clear smooth boundary. Lab sample # MU010867
    Bg2—71 to 107 centimeters (28.0 to 42.1 inches); gray (5Y 5/1) clay; 1 percent very dark gray (10YR 3/1) fine mottles; strong fine subangular blocky structure; firm; 10 percent fine yellowish brown (10YR 5/6) masses of oxidized iron; 1 percent fine irregular carbonate concretions; fragments; slightly alkaline, pH 7.4, hellige-truog; gradual smooth boundary. Lab sample # MU010868
    Bg3—107 to 145 centimeters (42.1 to 57.1 inches); gray (5Y 5/1) clay; 1 percent very dark gray (10YR 3/1) coarse mottles; strong fine and medium subangular blocky structure; firm; slickensides (pedogenic); 10 percent fine yellowish brown (10YR 5/6) masses of oxidized iron; fragments; slightly alkaline, pH 7.5, hellige-truog; diffuse smooth boundary. Lab sample # MU010869
    Bg4—145 to 170 centimeters (57.1 to 66.9 inches); gray (5Y 5/1) silty clay; 1 percent very dark gray (10YR 3/1) coarse mottles; strong fine and medium subangular blocky structure; firm; slickensides (pedogenic); 1 percent coarse yellowish brown (10YR 5/6) masses of oxidized iron; fragments; slightly alkaline, pH 7.6, hellige-truog. Lab sample # MU010870