IDENTIFIERS

  • Current Taxon Name (Soil Name): Clafork
  • OSD
  • Series Extent
  • User Site ID: 1989MO053050
  • User Pedon ID: 1989MO053050
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M8905350
  • NCSS Pedon Lab Data NASIS Record ID - 26752
  • 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: 38.7811389
  • Std. Longitude: -92.6016111
  • Datum: WGS84
  • Township: T46N
  • Range: R15W
  • Section: 6
  • PLSS Details: 1800' W and 400' S of the NE corner
  • Map Unit: 73531—Clafork silt loam, 5 to 8 percent slopes, eroded
  • State: Missouri
  • County: MO053—Cooper
  • MLRA: 112—Cherokee Prairies
  • Non-MLRA Soil Survey Area: MO053—Cooper County, Missouri
  • 7.5 Minute USGS Quad: 38092-G5—Prairie Home, Missouri

    • PEDON

  • Describers Name: John L. Baker, Greg Caldwell, David Skaer
  • Current Taxonomic Class: Fine, mixed, superactive, mesic Aquollic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Clafork
  • PSC - 20 to 70 cm.
  • Classificaton Date - 4/1/2011
  • Soil Taxonomic Edition - ninth edition
  • Sampled As Information:
  • Soil Name - Clafork
  • Classificaton Date - 11/8/1989
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 31.14 percent of Control section clay


    • SITE

  • Parent Material: loess over residuum weathered from cherty limestone
  • Landscape: upland
  • Hill Slope Profile: footslope
  • Slope Shape Across: concave
  • Slope Shape Down: linear
  • Drainage Class: somewhat poorly
  • Flooding: none flooding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/8/1989 (actual site observation date)
  • Surface Cover Properties:
  • 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

    argillic horizon

    fragic soil properties

    argillic horizon

    0—20

    20—61

    61—79

    79—152

    —-

    —-

    —-

    —-
    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

    7

    —

    —

    247.2

    —

    90

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark grayish brown (10YR 3/2) exterior silt loam; 5 percent sand; 73 percent silt; 23 percent clay; weak fine granular structure; friable; moderately slow permeability; 3.0 very fine roots; fragments; slightly acid, pH 6.1; abrupt smooth boundary. Lab sample # MU011689; observed in pit, small
    Bt1—20 to 38 centimeters (7.9 to 15.0 inches); dark yellowish brown (10YR 4/4) exterior silty clay loam; 4 percent sand; 62 percent silt; 33 percent clay; moderate very fine subangular blocky structure; firm; 0.8 very fine roots; 2 percent prominent silt coats on all faces of peds and 15 percent prominent clay films on all faces of peds; 1 percent fine iron-manganese masses and 2 percent fine prominent strong brown (7.5YR 5/8), moist, masses of oxidized iron and 5 percent fine prominent light brownish gray (10YR 6/2), moist, iron depletions; fragments; moderately acid, pH 5.6; gradual smooth boundary. Lab sample # MU011690; observed in pit, small
    Bt2—38 to 61 centimeters (15.0 to 24.0 inches); 50 percent dark yellowish brown (10YR 4/4) exterior and 50 percent grayish brown (10YR 5/2) exterior silty clay loam; 5 percent sand; 63 percent silt; 32 percent clay; weak fine subangular blocky structure; firm; 0.8 very fine roots; 15 percent prominent clay films on all faces of peds; 1 percent fine iron-manganese masses and 2 percent fine prominent light brownish gray (10YR 6/2), moist, iron depletions and 2 percent fine prominent 7.5YR 4/8 (7.5YR 4/8), moist, masses of oxidized iron; fragments; strongly acid, pH 5.4; clear smooth boundary. Lab sample # MU011691; observed in pit, small
    2Ex—61 to 79 centimeters (24.0 to 31.1 inches); 50 percent yellowish brown (10YR 5/4) exterior and 50 percent grayish brown (10YR 5/2) exterior silt loam; 6 percent sand; 68 percent silt; 26 percent clay; weak coarse subangular blocky parts to weak fine platy structure; firm; 0.8 fine roots; 15 percent prominent clay films on all faces of peds; 5 percent fine iron-manganese masses and 10 percent fine prominent strong brown (7.5YR 5/8), moist, masses of oxidized iron; 2 percent by volume indurated 2-40-75 millimeter chert fragments; strongly acid, pH 5.2; abrupt smooth boundary. Lab sample # MU011692; observed in pit, small
    3Bt3—79 to 104 centimeters (31.1 to 40.9 inches); dark yellowish brown (10YR 4/4) exterior extremely gravelly silty clay loam; 9 percent sand; 54 percent silt; 38 percent clay; moderate fine subangular blocky structure; firm; 0.8 fine roots; 15 percent prominent clay films on all faces of peds; 10 percent fine distinct grayish brown (10YR 5/2), moist, iron depletions and 30 percent fine iron-manganese masses; 5 percent by volume flat indurated 75-150-250 millimeter chert fragments and 70 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; strongly acid, pH 5.3; gradual smooth boundary. Lab sample # MU011693; observed in pit, small
    3Bt4—104 to 127 centimeters (40.9 to 50.0 inches); strong brown (7.5YR 5/6) exterior very gravelly clay; 23 percent sand; 29 percent silt; 48 percent clay; strong very fine subangular blocky structure; firm; 0.8 fine roots; 15 percent prominent clay films on all faces of peds; 1 percent fine prominent red (2.5YR 4/8), moist, masses of oxidized iron and 1 percent fine faint iron-manganese masses; 55 percent by volume indurated 2-40-75 millimeter chert fragments; moderately acid, pH 6.0; gradual smooth boundary. Lab sample # MU011694; observed in pit, small
    4Bt5—127 to 152 centimeters (50.0 to 59.8 inches); brownish yellow (10YR 6/8) exterior silty clay; 3 percent sand; 48 percent silt; 49 percent clay; strong very fine subangular blocky structure; very firm; 0.8 fine roots; 15 percent distinct clay films on all faces of peds; 2 percent fine distinct grayish brown (10YR 5/2), moist, iron depletions and 10 percent fine faint iron-manganese masses; 5 percent by volume indurated 2-40-75 millimeter chert fragments; neutral, pH 6.6. Lab sample # MU011695; observed in pit, small