IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1995MO123005M
  • User Pedon ID: 1995MO123005M
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9512305
  • NCSS Pedon Lab Data NASIS Record ID - 31960
  • 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: 37.3422775
  • Std. Longitude: -90.1764755
  • Datum: WGS84
  • Township: T31N
  • Range: R8E
  • Section: 28
  • PLSS Details: 1900 feet E and 275 feet S of the NW corner
  • Location Description: 1900 feet East and 275 feet South of the NW corner of Sec. 28, T.31N.-R.8E.
  • Map Unit: 73156—Alred-Gepp complex, 8 to 15 percent slopes, stony57D—Poynor gravelly silt loam, 9 to 14 percent slopes
  • State: Missouri
  • County: MO123—Madison
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO123—Madison County, Missouri
  • 7.5 Minute USGS Quad: 37090-C2—Allbright, Missouri

    • PEDON

  • Describers Name: MLC, CGM, KG
  • Current Taxonomic Class: Loamy-skeletal, siliceous, semiactive, mesic Typic Paleudults
  • Current Taxon Kind: series
  • Pedon Type: map unit inclusion
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Clarksville
  • PSC - 30 to 80 cm.
  • Classificaton Date - 2/1/2012
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Noark
  • Taxonomic Class - Clayey-skeletal, mixed, semiactive, mesic Typic Paleudults
  • Taxon Kind - series
  • PSC - 52 to 102 cm.
  • Classificaton Date - 1/31/1995
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 37 Cation exchange capacity to clay ratio


    • SITE

  • Parent Material: slope alluvium over residuum weathered from dolomite
  • Landscape: plateau
  • Landform: ridge
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/31/1995 (actual site observation date)
  • Air Photo ID: D-8
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    3—30

    51—203

    —-

    —-
    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

    9

    —

    —

    174

    —

    120

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments.
    A—3 to 9 centimeters (1.2 to 3.5 inches); yellowish brown (10YR 5/4), light brownish gray (10YR 6/2), dry; gravelly silt loam; moderate very fine granular structure; very friable; 15.0 very fine and fine roots and 4.0 medium and coarse roots; 16 percent by volume subangular 2-39-75 millimeter unspecified fragments; moderately acid, pH 5.7, hellige-truog; clear smooth boundary. Lab sample # MU053459. Thin layer of silt at the boundary between the A and E1 horizons.
    E1—9 to 19 centimeters (3.5 to 7.5 inches); brown (10YR 4/3), pale brown (10YR 6/3), dry; gravelly silt loam; weak fine subangular blocky parts to moderate very fine granular structure; friable; 15.0 very fine and fine roots and 4.0 medium and coarse roots; 16 percent by volume subangular 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU053460
    E2—19 to 31 centimeters (7.5 to 12.2 inches); light yellowish brown (10YR 6/4), very pale brown (10YR 7/3), dry; gravelly silt loam; moderate very fine subangular blocky structure; friable; 10.0 very fine and fine roots and 2.0 medium roots and 0.5 coarse roots; 8 percent by volume subangular 75-162-250 millimeter unspecified fragments and 20 percent by volume subangular 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.6, hellige-truog; clear smooth boundary. Lab sample # MU053461
    B/E12—31 to 52 centimeters (12.2 to 20.5 inches); 40 percent yellowish brown (10YR 5/4) extremely gravelly silt loam; friable; fragments; very strongly acid, pH 4.7, hellige-truog; clear smooth boundary. Lab sample # MU053462
    B/E11—31 to 52 centimeters (12.2 to 20.5 inches); 60 percent strong brown (7.5YR 4/6) extremely gravelly silt loam; moderate very fine subangular blocky structure; friable; 5.0 very fine and fine roots and 0.5 medium and coarse roots; 40 percent faint clay films on faces of peds; 3 percent by volume subangular 75-162-250 millimeter unspecified fragments and 65 percent by volume subangular 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.7, hellige-truog. Lab sample # MU053462. discontinuous - phpvsfiid 163112; discontinuous - phpvsfiid 163112
    Bt1—52 to 77 centimeters (20.5 to 30.3 inches); strong brown (7.5YR 4/6) very gravelly silty clay loam; moderate fine subangular blocky structure; firm; 5.0 very fine and fine roots and 0.5 medium and coarse roots; 2 percent light yellowish brown (10YR 6/4), moist, silt coats and 70 percent distinct clay films on faces of peds; 3 percent fine red (2.5YR 4/6) masses of oxidized iron; 3 percent by volume subangular 75-162-250 millimeter unspecified fragments and 50 percent by volume subangular 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.2, hellige-truog; clear smooth boundary. Lab sample # MU053463. discontinuous - phpvsfiid 163114; discontinuous - phpvsfiid 163114
    Bt2—77 to 105 centimeters (30.3 to 41.3 inches); 50 percent red (2.5YR 4/6) and 50 percent strong brown (7.5YR 5/6) gravelly silty clay; moderate very fine and fine subangular blocky structure; friable; 5.0 very fine and fine roots and 0.5 medium roots; 2 percent distinct light yellowish brown (10YR 6/4) silt coats and 30 percent prominent clay films on faces of peds and 40 percent distinct clay films on faces of peds; 24 percent by volume subangular 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.2, hellige-truog; clear smooth boundary. Lab sample # MU053464. discontinuous - phpvsfiid 163116; discontinuous - phpvsfiid 163117; discontinuous - phpvsfiid 163116; discontinuous - phpvsfiid 163117
    Bt3—105 to 133 centimeters (41.3 to 52.4 inches); 50 percent strong brown (7.5YR 4/6) and 50 percent yellowish brown (10YR 5/8) silty clay loam; 30 percent red (2.5YR 4/6) medium prominent mottles; weak medium prismatic parts to moderate fine subangular blocky structure; friable; 5.0 very fine and fine roots and 0.5 medium roots; 4 percent distinct pale brown (10YR 6/3) silt coats and 60 percent prominent clay films on faces of peds; 12 percent by volume subangular 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.1, hellige-truog; clear smooth boundary. Lab sample # MU053465. discontinuous - phpvsfiid 163119; discontinuous - phpvsfiid 163119
    2Bt4—133 to 161 centimeters (52.4 to 63.4 inches); dark yellowish brown (10YR 4/6) clay; 10 percent strong brown (7.5YR 5/6) medium prominent mottles; moderate coarse prismatic parts to moderate fine and medium subangular blocky structure; friable; 1.0 very fine and fine roots and 0.5 medium roots; 80 percent prominent clay films on faces of peds; 1 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.9, hellige-truog; gradual smooth boundary. Lab sample # MU053466. discontinuous - phpvsfiid 163120; discontinuous - phpvsfiid 163120
    2Bt5—161 to 184 centimeters (63.4 to 72.4 inches); dark yellowish brown (10YR 4/6) clay; 10 percent strong brown (7.5YR 5/8) medium prominent mottles; weak medium prismatic parts to moderate fine subangular blocky structure; friable; 1.0 very fine and fine roots and 0.5 medium roots; 75 percent prominent clay films on faces of peds; 6 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU053467. discontinuous - phpvsfiid 163121; discontinuous - phpvsfiid 163121
    2Bt6—184 to 204 centimeters (72.4 to 80.3 inches); dark yellowish brown (10YR 4/6) clay; 10 percent strong brown (7.5YR 5/8) medium prominent mottles; moderate fine subangular blocky structure; firm; 0.5 very fine and fine roots; 10 percent pressure faces and 65 percent prominent clay films on faces of peds; 6 percent by volume subrounded 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog. Lab sample # MU053468. discontinuous - phpvsfiid 163123; discontinuous - phpvsfiid 163123