IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1994MO203903M
  • User Pedon ID: 1994MO203903M
  • Transect:
  • Transect Stop Number - 3
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M94C_E03
  • NCSS Pedon Lab Data NASIS Record ID - 32062
  • Print Date: 2/16/2025

    • 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: 37.1736333
  • Std. Longitude: -91.1409611
  • Datum: WGS84
  • State: Missouri
  • County: MO203—Shannon
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO613—Shannon County, Missouri, North & West PartsMO203—Shannon County, Missouri
  • 7.5 Minute USGS Quad: 37091-B2—Powder Mill Ferry, Missouri

    • PEDON

  • Describers Name: DH, DM
  • Current Taxonomic Class: Loamy-skeletal, siliceous, semiactive, mesic Typic Hapludults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: within range of map unit
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Clarksville
  • PSC - 49 to 89 cm.
  • Classificaton Date - 3/28/2011
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Clarksville
  • Taxonomic Class - Loamy-skeletal, siliceous, semiactive, mesic Typic Paleudults
  • Taxon Kind - series
  • PSC - 33 to 83 cm.
  • Classificaton Date - 7/28/1994
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 34 Cation exchange capacity to clay ratio


    • SITE

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

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/28/1994 (actual site observation date)
  • Air Photo ID: 15
  • 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

    3—33

    33—140

    —-

    —-
    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

    23

    —

    —

    274

    —

    70

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments.
    A—3 to 11 centimeters (1.2 to 4.3 inches); dark grayish brown (10YR 4/2) extremely gravelly silt loam; moderate very fine granular structure; very friable; 99.0 fine roots; 15.0 fine interstitial and tubular pores; 65 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 # MU051921
    AE—11 to 18 centimeters (4.3 to 7.1 inches); light yellowish brown (10YR 6/4) very gravelly silt loam; weak fine subangular blocky structure; very friable; 3.0 medium roots and 15.0 fine roots and 1.0 coarse roots; 1.0 medium tubular and 15.0 fine interstitial and tubular pores; 75 percent prominent dark grayish brown (10YR 4/2), moist, organic stains in root channels and/or pores; 50 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.6, hellige-truog; clear smooth boundary. Lab sample # MU051922
    BE—18 to 33 centimeters (7.1 to 13.0 inches); yellowish brown (10YR 5/4) gravelly silt loam; weak fine subangular blocky structure; friable; 4.0 medium roots and 15.0 fine roots and 4.0 coarse roots; 2.0 medium tubular and 10.0 fine tubular and 1.0 coarse tubular pores; 12 percent distinct dark grayish brown (10YR 4/2), moist, organic stains in root channels and/or pores and 75 percent distinct very pale brown (10YR 7/4), moist, silt coats throughout; 25 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 # MU051923
    Bt1—33 to 49 centimeters (13.0 to 19.3 inches); light yellowish brown (10YR 6/4) very gravelly silt loam; weak fine subangular blocky structure; friable; 1.0 medium roots and 1.0 fine roots and 2.0 coarse roots; 1.0 medium tubular and 1.0 fine tubular and 1.0 coarse tubular pores; 10 percent faint pale brown (10YR 6/3), moist, silt coats on rock fragments and 75 percent prominent yellowish brown (10YR 5/6), moist, clay films on vertical faces of peds; 40 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments and 42 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; gradual smooth boundary. Lab sample # MU051924
    Bt2—49 to 61 centimeters (19.3 to 24.0 inches); strong brown (7.5YR 5/6) very cobbly silt loam; moderate medium subangular blocky parts to weak very fine and fine subangular blocky structure; friable; 2.0 medium roots and 1.0 fine roots and 1.0 coarse roots; 2.0 medium tubular and 8.0 fine tubular and 1.0 coarse tubular pores; 30 percent distinct pale brown (10YR 6/3), moist, silt coats throughout and 30 percent distinct very pale brown (10YR 7/3), moist, silt coats throughout and 33 percent distinct yellowish red (5YR 5/6), moist, clay films on vertical faces of peds; 20 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments and 25 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; gradual smooth boundary. Lab sample # MU051925
    Bt3—61 to 74 centimeters (24.0 to 29.1 inches); strong brown (7.5YR 5/6) very gravelly silt loam; moderate very fine and fine subangular blocky structure; firm; 2.0 medium roots and 0.5 fine roots and 1.0 coarse roots; 1.0 medium tubular and 4.0 fine tubular pores; 30 percent distinct brown (10YR 5/3), moist, silt coats throughout and 75 percent prominent red (2.5YR 4/6), moist, clay films on all faces of peds; 10 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 4.9, hellige-truog; clear wavy boundary. Lab sample # MU051926
    2Bt4—74 to 84 centimeters (29.1 to 33.1 inches); yellowish red (5YR 4/6) very gravelly clay loam; moderate fine and medium subangular blocky structure; firm; 1.0 medium roots and 0.5 fine roots; 1.0 medium tubular and 4.0 fine tubular pores; 10 percent distinct light gray (10YR 7/2), moist, silt coats throughout and 75 percent prominent red (2.5YR 4/6), moist, clay films on all faces of peds; 50 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU051927
    2Bt5—84 to 102 centimeters (33.1 to 40.2 inches); yellowish red (5YR 5/6) very gravelly clay loam; weak medium angular blocky structure; firm; 1.0 medium roots and 0.5 fine roots; 1.0 medium tubular and 6.0 fine tubular pores; 75 percent prominent red (2.5YR 4/6), moist, clay films on all faces of peds; 55 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; clear wavy boundary. Lab sample # MU051928
    2Bt6—102 to 120 centimeters (40.2 to 47.2 inches); yellowish red (5YR 5/6) extremely gravelly clay loam; weak medium platy parts to weak medium angular blocky structure; firm; 1.0 medium roots and 0.2 fine roots; 1.0 fine interstitial and tubular pores; 75 percent prominent red (2.5YR 4/6), moist, clay films on all faces of peds; 2 percent fine spherical iron-manganese concretions throughout; 5 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 60 percent by volume nonflat subangular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; gradual wavy boundary. Lab sample # MU051929
    2Bt7—120 to 140 centimeters (47.2 to 55.1 inches); yellowish red (5YR 5/6) extremely gravelly clay loam; weak medium platy parts to weak medium angular blocky structure; firm; 0.1 fine roots; 1.0 fine tubular pores; 75 percent distinct red (2.5YR 4/6), moist, clay films on all faces of peds; 2 percent fine spherical iron-manganese concretions throughout; 10 percent by volume nonflat subangular indurated 75-162-250 millimeter chert fragments and 60 percent by volume subangular 2-39-75 millimeter limestone-sandstone fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU051930