IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1994MO203030M
  • User Pedon ID: 1994MO203030M
  • User Site Association ID: 8715
  • Transect:
  • User Transect ID - shannon-PH
  • Transect Stop Number - 4
  • Transect Interval - 200.0
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9461330
  • NCSS Pedon Lab Data NASIS Record ID - 26859
  • User Project ID: 2021-25NCSPR013
  • Project Name: MLRA 116A - Mark Twain National Forest Update
  • Print Date: 2/2/2025

    • 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: 37.0344056
  • Std. Longitude: -91.4686972
  • Datum: WGS84
  • State: Missouri
  • County: MO203—Shannon
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO203—Shannon County, Missouri
  • 7.5 Minute USGS Quad: 37091-A4—Bartlett, Missouri

    • PEDON

  • Describers Name: SV, JDC, LT
  • Current Taxonomic Class: Loamy-skeletal, siliceous, semiactive, mesic Typic Paleudults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Clarksville
  • PSC - 23 to 73 cm.
  • Classificaton Date - 2/15/2024
  • Classifier - Campbell and Meinert
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Clarksville
  • Taxonomic Class - Loamy-skeletal, siliceous, semiactive, mesic Typic Paleudults
  • Taxon Kind - series
  • PSC - 23 to 73 cm.
  • Classificaton Date - 7/19/1994
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1
  • Field Measured Properties: 35 Cation exchange capacity to clay ratio


    • SITE

  • Parent Material: slope alluvium over residuum
  • Landscape: hills
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/19/1994 (actual site observation date)
  • Air Photo ID: 19
  • 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

    strongly contrasting particle size class

    3—23

    23—155

    100—

    —-

    —-

    —-
    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

    5

    —

    —

    341

    —

    340

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments. Partially decomposed roots and leaves.
    A—3 to 13 centimeters (1.2 to 5.1 inches); dark grayish brown (10YR 4/2) very gravelly silt loam; weak fine granular structure; very friable; 6.0 very fine and fine roots; 10.0 very fine interstitial and tubular pores; 5 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 45 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU012454
    E—13 to 23 centimeters (5.1 to 9.1 inches); yellowish brown (10YR 5/4) very gravelly silt loam; weak very fine subangular blocky structure; friable; 2.0 medium roots and 0.5 fine roots; 6.0 very fine tubular pores; 15 percent distinct dark grayish brown (10YR 4/2) organic stains and 15 percent distinct black (10YR 2/1) manganese or iron-manganese stains; 2 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 35 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.7, hellige-truog; clear smooth boundary. Lab sample # MU012455
    Bt1—23 to 44 centimeters (9.1 to 17.3 inches); yellowish brown (10YR 5/4) very gravelly silt loam; 15 percent clay; moderate fine subangular blocky structure; friable; 0.1 very fine roots; 6.0 very fine tubular pores; 35 percent distinct dark yellowish brown (10YR 4/6) clay films and 35 percent distinct pale brown (10YR 6/3) skeletans; 3 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 40 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU012456
    Bt2—44 to 69 centimeters (17.3 to 27.2 inches); 60 percent yellowish brown (10YR 5/6) and 40 percent strong brown (7.5YR 5/6) very gravelly silt loam; 20 percent clay; moderate fine subangular blocky structure; friable; 0.1 very fine roots; 6.0 very fine tubular and 1.0 medium vesicular and 2.0 medium tubular pores; 35 percent distinct brown (7.5YR 5/4) clay films and 75 percent prominent pale brown (10YR 6/3) skeletans; 5 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 45 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU012457
    Bt31—69 to 84 centimeters (27.2 to 33.1 inches); yellowish red (5YR 4/6) very gravelly silt loam; 38 percent clay; moderate fine subangular blocky structure; firm; 0.1 very fine roots; 6.0 very fine tubular and 1.0 medium vesicular and 2.0 medium tubular pores; 15 percent distinct black (10YR 2/1) manganese or iron-manganese stains and 35 percent distinct red (2.5YR 5/8) clay films and 75 percent prominent yellowish brown (10YR 5/4) skeletans; 5 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 30 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # MU012458. Split for sampling: 05—26 to 32 in.; 06—32 to 38 in.
    Bt32—84 to 100 centimeters (33.1 to 39.4 inches); very gravelly silty clay loam; 5 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 30 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.7, hellige-truog. Lab sample # MU012459
    2Bt41—100 to 120 centimeters (39.4 to 47.2 inches); red (2.5YR 4/8) silty clay; 58 percent clay; weak coarse subangular blocky parts to moderate very fine and fine subangular blocky structure; firm; 0.1 very fine roots; 1.0 medium vesicular and 2.0 fine tubular pores; 15 percent distinct black (10YR 2/1) manganese or iron-manganese stains and 35 percent distinct red (2.5YR 5/8) clay films and 75 percent distinct pale brown (10YR 6/3) skeletans; 5 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.7, hellige-truog; gradual wavy boundary. Lab sample # MU012460. Split for sample: 07—38 to 46 in.; 08—46 to 54 in.
    2Bt42—120 to 140 centimeters (47.2 to 55.1 inches); clay; 5 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU012461
    2Bt5—140 to 155 centimeters (55.1 to 61.0 inches); 60 percent yellowish red (5YR 5/6) and 40 percent red (2.5YR 4/8) clay; moderate medium subangular blocky parts to moderate very fine and fine subangular blocky structure; firm; 0.1 very fine roots; 4.0 very fine tubular pores; 15 percent distinct black (N 2/0) manganese or iron-manganese stains and 35 percent distinct pale brown (10YR 6/3) skeletans and 75 percent distinct red (2.5YR 5/8) clay films; 1 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 10 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU012462