IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1994MO123004M
  • User Pedon ID: 1994MO123004M
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9412304
  • NCSS Pedon Lab Data NASIS Record ID - 26855
  • Print Date: 1/29/2025

    • 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: 37.3287773
  • Std. Longitude: -90.2845535
  • Datum: WGS84
  • Township: T31N
  • Range: R7E
  • Section: 33
  • PLSS Details: 2250 feet E and 550 feet S of the NW corner
  • Location Description: 2250 ft. E. and 550 ft. S. of NW corner of Sec. 33, T. 31 N., R. 7 E.
  • Map Unit: 73140—Clarksville-Scholten complex, 15 to 45 percent slopes, very stony13F—Clarksville very gravelly silt loam, 20 to 35 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-C3—Cascade, Missouri

    • PEDON

  • Describers Name: KEB, MLC, CGM AND KWG
  • Current Taxonomic Class: Loamy-skeletal, siliceous, semiactive, mesic Typic Paleudults
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Clarksville
  • PSC - 41 to 91 cm.
  • Classificaton Date - 3/30/2011
  • 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 - 41 to 91 cm.
  • Classificaton Date - 5/18/1994
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 31 Cation exchange capacity to clay ratio


    • SITE

  • Parent Material: unconsolidated sediments derived from cherty limestone
  • Landscape: plateau
  • Landform: V-shaped valley
  • Geomorphic Component Hills: nose slope
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Runoff: high
  • Drainage Class: somewhat excessively
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/18/1994 (actual site observation date)
  • Air Photo ID: C-9
  • 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

    0—41

    41—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

    23

    —

    —

    189

    —

    340

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 5 centimeters (0.0 to 2.0 inches); dark brown (10YR 3/3), light brownish gray (10YR 6/2), dry; very gravelly silt loam; moderate very fine granular structure; very friable; 10.0 very fine to medium roots; 5 percent by volume 75-162-250 millimeter unspecified fragments and 5 percent by volume 250-425-600 millimeter unspecified fragments and 40 percent by volume 2-39-75 millimeter unspecified fragments; slightly acid, pH 6.3, hellige-truog; abrupt smooth boundary. Lab sample # MU012425; moist when described;
    E—5 to 25 centimeters (2.0 to 9.8 inches); dark yellowish brown (10YR 4/4), very pale brown (10YR 7/3), dry; very gravelly silt loam; weak fine subangular blocky parts to moderate very fine granular structure; very friable; 10.0 very fine roots and 3.0 medium roots; 2 percent by volume 250-425-600 millimeter unspecified fragments and 5 percent by volume 75-162-250 millimeter unspecified fragments and 47 percent by volume 2-39-75 millimeter unspecified fragments; moderately acid, pH 5.8, hellige-truog; clear wavy boundary. Lab sample # MU012426; moist when described;
    BE—25 to 41 centimeters (9.8 to 16.1 inches); dark yellowish brown (10YR 4/6), very pale brown (10YR 7/4), dry; very gravelly silt loam; moderate very fine subangular blocky structure; friable; 3.0 very fine and fine roots and 0.5 medium and coarse roots; 2 percent by volume 250-425-600 millimeter unspecified fragments and 5 percent by volume 75-162-250 millimeter unspecified fragments and 38 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU012427; moist when described;
    Bt1—41 to 64 centimeters (16.1 to 25.2 inches); yellowish brown (10YR 5/6) very gravelly silt loam; moderate very fine subangular blocky structure; friable; 3.0 very fine to medium roots; 15 percent faint strong brown (7.5YR 4/6) clay films on faces of peds; 2 percent by volume 250-425-600 millimeter unspecified fragments and 3 percent by volume 75-162-250 millimeter unspecified fragments and 43 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.7, hellige-truog; gradual wavy boundary. Lab sample # MU012428; moist when described;. patchy - phpvsfiid 163231; patchy - phpvsfiid 163231
    Bt2—64 to 89 centimeters (25.2 to 35.0 inches); strong brown (7.5YR 5/6) very gravelly clay loam; moderate very fine subangular blocky structure; friable; 3.0 very fine and fine roots; 30 percent distinct brown (7.5YR 4/4) clay films on faces of peds; 2 percent by volume 250-425-600 millimeter unspecified fragments and 3 percent by volume 75-162-250 millimeter unspecified fragments and 42 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.8, hellige-truog; gradual wavy boundary. Lab sample # MU012429; moist when described;. discontinuous - phpvsfiid 163232; discontinuous - phpvsfiid 163232
    2Bt3—89 to 109 centimeters (35.0 to 42.9 inches); reddish yellow (7.5YR 6/6) very gravelly loam; moderate very fine subangular blocky structure; friable; 0.5 very fine and fine roots; 30 percent prominent light brown (7.5YR 6/3) silt coats on faces of peds and 55 percent distinct strong brown (7.5YR 4/6) clay films on faces of peds; 2 percent by volume 250-425-600 millimeter unspecified fragments and 6 percent by volume 75-162-250 millimeter unspecified fragments and 45 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU012430; moist when described;. continuous - phpvsfiid 163233; discontinuous - phpvsfiid 163262; continuous - phpvsfiid 163233; discontinuous - phpvsfiid 163262
    2Bt4—109 to 132 centimeters (42.9 to 52.0 inches); strong brown (7.5YR 5/6) extremely gravelly loam; moderate fine subangular blocky structure; firm; 0.5 fine roots; 10 percent prominent clay films on vertical faces of peds and 10 percent prominent pink (7.5YR 8/4) silt coats on faces of peds and 30 percent distinct clay films on faces of peds; 5 percent by volume 250-425-600 millimeter unspecified fragments and 10 percent by volume 75-162-250 millimeter unspecified fragments and 45 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; diffuse wavy boundary. Lab sample # MU012431; moist when described;. discontinuous - phpvsfiid 163263; discontinuous - phpvsfiid 163264; discontinuous - phpvsfiid 163265; discontinuous - phpvsfiid 163263; discontinuous - phpvsfiid 163264; discontinuous - phpvsfiid 163265
    3Bt51—132 to 155 centimeters (52.0 to 61.0 inches); reddish yellow (7.5YR 6/8) very stony clay; moderate very fine and fine subangular blocky structure; firm; 0.5 fine roots; 30 percent prominent yellowish red (5YR 5/6) clay films on vertical faces of peds; 10 percent by volume 75-162-250 millimeter unspecified fragments and 15 percent by volume 250-425-600 millimeter unspecified fragments and 18 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; gradual wavy boundary. Lab sample # MU012432; moist when described;. Horizon was split at 61 inches for sampling.; discontinuous - phpvsfiid 163266; discontinuous - phpvsfiid 163266
    3Bt52—155 to 178 centimeters (61.0 to 70.1 inches); reddish yellow (7.5YR 6/8) very stony clay loam; moderate very fine and fine subangular blocky structure; firm; 0.5 fine roots; 30 percent prominent yellowish red (5YR 5/6) clay films on vertical faces of peds; 10 percent by volume 75-162-250 millimeter unspecified fragments and 15 percent by volume 250-425-600 millimeter unspecified fragments and 18 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; gradual wavy boundary. Lab sample # MU012433; moist when described;. Horizon was split at 61 inches for sampling.; discontinuous - phpvsfiid 1504288; discontinuous - phpvsfiid 1504288
    3Bt6—178 to 203 centimeters (70.1 to 79.9 inches); yellowish brown (10YR 5/8) gravelly sandy clay loam; weak fine subangular blocky structure; friable; 10 percent prominent clay films on vertical faces of peds; 3 percent by volume 75-162-250 millimeter unspecified fragments and 14 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU012434; moist when described;. discontinuous - phpvsfiid 163267; discontinuous - phpvsfiid 163267