IDENTIFIERS

  • Current Taxon Name (Soil Name): Ashton
  • OSD
  • Series Extent
  • User Site ID: 1990MO099017
  • User Pedon ID: 1990MO099017
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M90099176
  • Print Date: 4/21/2026

    • 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: 38.4800511
  • Std. Longitude: -90.6320563
  • Datum: WGS84
  • Location Description: Bob Killbreath's—Meramec River
  • State: Missouri
  • County: MO099—Jefferson
  • MLRA: 115—Central Mississippi Valley Wooded Slopes

    • PEDON

  • Describers Name: JAD, EJD, KAK
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Ashton
  • Classificaton Date - 11/21/1990
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium
  • Landscape: river valley
  • Landform: fluvial terrace
  • Slope Position: lower third
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/21/1990 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    Ap

    Bt1

    Bt2

    Bt3

    C

    0

    25

    38

    76

    150

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    6.6

    6.7

    6.6

    5.7

    5.2
    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    Ap

    Bt1

    Bt2

    Bt3

    C

    0

    25

    38

    76

    150

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    Ap

    Bt1

    Bt2

    Bt3

    C

    0

    25

    38

    76

    150

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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

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    133

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    Ap—0 to 25 centimeters (0.0 to 9.8 inches); dark brown (10YR 3/3), brown (10YR 5/3), dry; silt loam; weak very fine granular structure; very friable; 3.0 very fine roots and 3.0 fine roots; fragments; neutral, pH 6.6, hellige-truog; clear smooth boundary. Lab sample # MU009850
    Bt1—25 to 38 centimeters (9.8 to 15.0 inches); dark yellowish brown (10YR 4/4) silt loam; weak fine subangular blocky structure; friable; 1.0 very fine roots and 1.0 fine roots; 10 percent faint clay films on all faces of peds; 1 percent fine spherical iron-manganese concretions; fragments; neutral, pH 6.7, hellige-truog; clear smooth boundary. Lab sample # MU009851
    Bt2—38 to 76 centimeters (15.0 to 29.9 inches); brown (7.5YR 4/3) silty clay loam; weak fine subangular blocky structure; firm; 1.0 very fine roots and 1.0 fine roots; 30 percent distinct clay films on all faces of peds and 30 percent faint very dark grayish brown (10YR 3/2) manganese or iron-manganese stains on all faces of peds; fragments; neutral, pH 6.6, hellige-truog; gradual smooth boundary. Lab sample # MU009852
    Bt3—76 to 150 centimeters (29.9 to 59.1 inches); brown (7.5YR 4/3) silt loam; weak fine subangular blocky structure; firm; 1.0 very fine roots; 30 percent distinct clay films on all faces of peds; 1 percent fine spherical iron-manganese concretions; fragments; moderately acid, pH 5.7, hellige-truog; gradual smooth boundary. Lab sample # MU009853
    C—150 to 173 centimeters (59.1 to 68.1 inches); dark yellowish brown (10YR 4/4) silt loam; massive; firm; fragments; strongly acid, pH 5.2, hellige-truog. Lab sample # MU009854