IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1994MO203056M
  • User Pedon ID: 1994MO203056M
  • Vegetation Plot ID: 1994MO203056
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9461356
  • NCSS Pedon Lab Data NASIS Record ID - 25326
  • Print Date: 12/5/2025

    • 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: 37.1729000
  • Std. Longitude: -91.1389500
  • Datum: WGS84
  • Township: T29N
  • Range: R2W
  • Section: 14
  • PLSS Details: 1575 feet E and 844 feet N of the SW corner
  • Country: US—United States
  • State: Missouri
  • County: MO203—Shannon
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO613—Shannon County, Missouri, North & West Parts
  • 7.5 Minute USGS Quad: 37091-B2—Powder Mill Ferry, Missouri

    • PEDON

  • Describers Name: Dennis Meinert, Keith Knelle
  • Current Taxonomic Class: Loamy-skeletal, semiactive, mesic Typic Hapludults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: map unit inclusion
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 56
  • Correlated Information:
  • Soil Name - Clarksville
  • PSC - 36 to 86 cm.
  • Classificaton Date - 3/12/2020
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Clarksville
  • Taxonomic Class - Loamy-skeletal, siliceous, semiactive, mesic Typic Hapludults
  • Taxon Kind - series
  • PSC - 36 to 86 cm.
  • Classificaton Date - 8/1/1994
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 3


    • SITE

  • Parent Material: Gasconade Dolomite slope alluvium derived from mixed
  • Landscape: hills
  • Landform: hillslope
  • Geomorphic Component Hills: nose slope
  • Hill Slope Profile: footslope
  • Slope Position: lower third
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: low
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Gasconade Dolomite formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/1/1994 (actual site observation date)
  • Air Photo ID: 37091b2se
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion sheet
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    QUCO2

    QUVE

    Quercus coccinea

    Quercus velutina

    scarlet oak

    black oak

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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    lithologic discontinuity

    lithologic discontinuity

    0—36

    36—137

    66—

    112—

    —36—

    —101—

    —1—

    —1—
    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

    32

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    —

    264.6

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    34

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    A—0 to 18 centimeters (0.0 to 7.1 inches); dark grayish brown (10YR 4/2) broken face extremely gravelly silt loam; weak fine granular structure; friable; 0.5 medium roots throughout and 0.5 fine roots throughout; 0.5 fine interstitial and 0.5 fine tubular pores; 15 percent by volume nonflat subangular strongly coherent cemented 75-?-250 millimeter chert fragments and 60 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001453; observed in pit, small
    E—18 to 36 centimeters (7.1 to 14.2 inches); light yellowish brown (10YR 6/4) broken face very gravelly silt loam; moderate fine subangular blocky structure; friable; 0.5 fine roots throughout and 0.5 coarse roots throughout; 0.5 medium tubular and 0.5 fine interstitial and 0.5 fine tubular pores; 35 percent faint pale brown (10YR 6/3), moist, silt coats on all faces of peds; 2 percent by volume nonflat subangular strongly coherent cemented 75-?-250 millimeter chert fragments and 45 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001454; observed in pit, small
    Bt1—36 to 51 centimeters (14.2 to 20.1 inches); strong brown (7.5YR 5/6) broken face very gravelly silt loam; weak fine subangular blocky structure; friable; 0.5 fine roots throughout and 0.5 coarse roots throughout; 0.5 medium tubular and 0.5 fine tubular pores; 12 percent distinct brown (7.5YR 5/4), moist, clay films on all faces of peds and 35 percent distinct light yellowish brown (10YR 6/4), moist, silt coats on all faces of peds; 2 percent by volume nonflat subangular strongly coherent cemented 75-?-250 millimeter chert fragments and 40 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001455; observed in pit, small
    Bt2—51 to 66 centimeters (20.1 to 26.0 inches); strong brown (7.5YR 4/6) broken face very gravelly silt loam; moderate fine subangular blocky structure; firm; 0.5 fine roots throughout; 0.5 fine vesicular and 0.5 fine tubular pores; 12 percent distinct red (2.5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct yellowish red (5YR 5/6), moist, clay films on all faces of peds and 35 percent distinct very pale brown (10YR 7/3), moist, silt coats on all faces of peds; 1 percent by volume nonflat subangular strongly coherent cemented 75-?-250 millimeter chert fragments and 40 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear wavy boundary. Lab sample # MU001456; observed in pit, small
    2Bt31—66 to 81 centimeters (26.0 to 31.9 inches); yellowish red (5YR 4/6) broken face very gravelly clay loam; moderate fine subangular blocky structure; firm; 0.5 fine roots throughout; 0.5 fine interstitial and 3.0 fine tubular and 0.5 coarse vesicular pores; 35 percent prominent red (2.5YR 5/6), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; 5 percent by volume nonflat subangular strongly coherent cemented 75-?-250 millimeter chert fragments and 45 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear wavy boundary. Lab sample # MU001457; observed in pit, small
    2Bt32—81 to 97 centimeters (31.9 to 38.2 inches); yellowish red (5YR 4/6) broken face very gravelly sandy clay loam; moderate fine subangular blocky structure; firm; 0.5 fine roots throughout; 0.5 fine interstitial and 3.0 fine tubular and 0.5 coarse vesicular pores; 35 percent prominent red (2.5YR 5/6), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; 5 percent by volume nonflat subangular strongly coherent cemented 75-?-250 millimeter chert fragments and 45 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear wavy boundary. Lab sample # MU001458; observed in pit, small
    2Bt33—97 to 112 centimeters (38.2 to 44.1 inches); yellowish red (5YR 4/6) broken face very gravelly sandy clay loam; moderate fine subangular blocky structure; firm; 0.5 fine roots throughout; 0.5 fine interstitial and 3.0 fine tubular and 0.5 coarse vesicular pores; 35 percent prominent red (2.5YR 5/6), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; 5 percent by volume nonflat subangular strongly coherent cemented 75-?-250 millimeter chert fragments and 45 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear wavy boundary. Lab sample # MU001459; observed in pit, small
    2Bt4—112 to 137 centimeters (44.1 to 53.9 inches); red (2.5YR 4/6) broken face extremely gravelly loam; moderate fine subangular blocky, and weak medium prismatic structure; friable; 0.5 fine roots throughout; 3.0 very fine tubular and 3.0 fine tubular pores; 12 percent prominent grayish brown (10YR 5/2), moist, clay films on all faces of peds and 70 percent prominent red (2.5YR 4/6), moist, clay films on rock fragments; 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented light gray (10YR 7/2), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented light brownish gray (10YR 6/2), moist, iron depletions with clear boundaries in matrix; 10 percent by volume nonflat subangular strongly coherent cemented 75-?-250 millimeter chert fragments and 50 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments. Lab sample # MU001460; observed in pit, small