IDENTIFIERS

  • Current Taxon Name (Soil Name): Clafork
  • OSD
  • Series Extent
  • User Site ID: 1990MO053002
  • User Pedon ID: 1990MO053002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9005302
  • NCSS Pedon Lab Data NASIS Record ID - 26755
  • 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: 38.7776944
  • Std. Longitude: -92.6008611
  • Datum: WGS84
  • Township: T45N
  • Range: R16W
  • Section: 6
  • PLSS Details: 1600'west and 1670' south of the NE Corner
  • Map Unit: 73138—Clafork silt loam, 2 to 5 percent slopes
  • State: Missouri
  • County: MO053—Cooper
  • MLRA: 112—Cherokee Prairies
  • Non-MLRA Soil Survey Area: MO053—Cooper County, Missouri
  • 7.5 Minute USGS Quad: 38092-F6—Clarksburg, Missouri

    • PEDON

  • Describers Name: John Baker, Dave Skaer, Greg Caldwell
  • Current Taxonomic Class: Fine Aquollic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Clafork
  • PSC - 28 to 79 cm.
  • Classificaton Date - 9/16/2010
  • Sampled As Information:
  • Soil Name - Clarksfork
  • Classificaton Date - 10/25/2004
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess
  • Landscape: upland
  • Landform: hill
  • Geomorphic Component Hills: crest
  • Hill Slope Profile: summit
  • Slope Complexity: simple
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: somewhat poorly
  • Flooding: occasional flooding
  • Ponding: rare ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/25/2004 (entry creation 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

    ochric epipedon

    argillic horizon

    fragic soil properties

    0—28

    28—218

    99—183

    —-

    —-

    —-
    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

    3

    —

    —

    280.4

    —

    270

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 20 centimeters (0.0 to 7.9 inches); 50 percent very dark grayish brown (10YR 3/2) exterior, 50 percent grayish brown (10YR 5/2) exterior, dry; silt loam; weak fine granular structure; friable; moderately slow permeability; 5.0 very fine roots; 1 percent fine iron-manganese masses; fragments; neutral, pH 6.8; abrupt smooth boundary. Lab sample # MU011711; moist when described; observed in pit, small
    E—20 to 28 centimeters (7.9 to 11.0 inches); brown (10YR 5/3) exterior silt loam; 1 percent strong brown (7.5YR 5/8) fine prominent mottles; weak very fine subangular blocky structure; friable; 5.0 very fine roots; 40 percent distinct silt coats on all faces of peds; 1 percent fine iron-manganese masses; fragments; slightly acid, pH 6.3; clear smooth boundary. Lab sample # MU011712; observed in pit, small
    Bt1—28 to 41 centimeters (11.0 to 16.1 inches); 50 percent dark yellowish brown (10YR 4/4) exterior, 50 percent grayish brown (10YR 5/2) exterior, dry; silty clay loam; 15 percent red (2.5YR 4/8) fine prominent mottles; moderate very fine subangular blocky structure; firm; 4.0 very fine roots; 15 percent distinct silt coats on all faces of peds and 45 percent distinct clay films on all faces of peds; 1 percent fine iron-manganese masses; fragments; strongly acid, pH 5.3; clear smooth boundary. Lab sample # MU011713; observed in pit, small
    Bt2—41 to 58 centimeters (16.1 to 22.8 inches); 50 percent dark grayish brown (10YR 4/2) exterior, 50 percent dark yellowish brown (10YR 4/4) exterior, dry; silty clay; 20 percent red (2.5YR 4/8) fine prominent mottles; strong very fine subangular blocky structure; very firm; 1.0 very fine roots; 85 percent prominent clay films on all faces of peds; 1 percent fine iron-manganese masses; fragments; strongly acid, pH 5.1; gradual smooth boundary. Lab sample # MU011714; observed in pit, small
    Bt3—58 to 79 centimeters (22.8 to 31.1 inches); 50 percent dark yellowish brown (10YR 4/4) exterior, 50 percent dark grayish brown (10YR 4/2) exterior, dry; silty clay; 18 percent strong brown (7.5YR 4/6) fine prominent mottles; strong very fine subangular blocky structure; very firm; 1.0 very fine roots; 90 percent distinct clay films on all faces of peds; 1 percent fine iron-manganese masses; fragments; moderately acid, pH 5.7; gradual smooth boundary. Lab sample # MU011715; observed in pit, small
    Bt4—79 to 99 centimeters (31.1 to 39.0 inches); 50 percent grayish brown (10YR 5/2) exterior, 50 percent dark yellowish brown (10YR 4/4) exterior, dry; silty clay loam; 14 percent 7.5YR 4/8 (7.5YR 4/8) fine prominent mottles; moderate fine subangular blocky structure; firm; 1.0 very fine roots; 50 percent distinct clay films on all faces of peds; 18 percent fine iron-manganese masses; fragments; slightly acid, pH 6.4; gradual smooth boundary. Lab sample # MU011716; observed in pit, small
    2Btx1—99 to 124 centimeters (39.0 to 48.8 inches); 50 percent grayish brown (10YR 5/2) exterior, 50 percent yellowish brown (10YR 5/4) exterior, dry; silty clay loam; 17 percent strong brown (7.5YR 5/8) fine prominent mottles; moderate medium prismatic structure; very firm; brittle; 1.0 very fine roots; 23 percent distinct silt coats on vertical faces of peds and 25 percent distinct clay films on all faces of peds; 1 percent fine iron-manganese masses; fragments; neutral, pH 7.1; clear smooth boundary. Lab sample # MU011717; observed in pit, small
    2Btx2—124 to 150 centimeters (48.8 to 59.1 inches); grayish brown (10YR 5/2) exterior silt loam; 15 percent yellowish brown (10YR 5/4) fine distinct and 17 percent 7.5YR 4/8 (7.5YR 4/8) fine prominent mottles; weak coarse prismatic structure; very firm; brittle; 1.0 very fine roots; 10 percent distinct clay films on surfaces along root channels and 10 percent distinct clay films on vertical faces of peds and 75 percent distinct silt coats on vertical faces of peds; 1 percent fine iron-manganese masses; 4 percent by volume 2-30-75 millimeter chert fragments; moderately alkaline, pH 8.2; clear smooth boundary. Lab sample # MU011718; observed in pit, small
    3Btx—150 to 183 centimeters (59.1 to 72.0 inches); grayish brown (10YR 5/2) exterior very gravelly silt loam; 14 percent 7.5YR 4/8 (7.5YR 4/8) fine prominent mottles; weak fine subangular blocky structure; firm; brittle; 1.0 very fine roots; 25 percent distinct clay films on all faces of peds; 1 percent fine iron-manganese masses; 50 percent by volume 2-30-75 millimeter chert fragments; moderately alkaline, pH 8.4. Lab sample # MU011719; observed in pit, small
    3Bt—183 to 203 centimeters (72.0 to 79.9 inches); 50 percent red (2.5YR 4/8) exterior, 50 percent dark red (2.5YR 3/6) exterior, dry; very gravelly silty clay; strong very fine subangular blocky structure; very firm; 1.0 very fine roots; 50 percent pressure faces and 88 percent prominent clay films on faces of peds; 1 percent fine iron-manganese masses; 10 percent by volume 75-150-250 millimeter unspecified fragments and 50 percent by volume 2-30-75 millimeter chert fragments; moderately alkaline, pH 8.3. Lab sample # MU011720; observed in pit, small
    4Bt—203 to 218 centimeters (79.9 to 85.8 inches); 50 percent dark red (2.5YR 3/6) exterior, 50 percent reddish brown (5YR 5/4) exterior, dry; clay; strong very fine angular blocky structure; very firm; 1.0 very fine roots; 35 percent pressure faces and 72 percent distinct clay films on faces of peds; 1 percent fine iron-manganese masses; 5 percent by volume 2-30-75 millimeter chert fragments and 5 percent by volume 75-150-250 millimeter unspecified fragments; moderately alkaline, pH 8.4. Lab sample # MU011721; observed in pit, small