IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1997MO067130M
  • User Pedon ID: 1997MO067130
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9706738
  • Print Date: 1/30/2025

    • 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: 36.9763778
  • Std. Longitude: -92.1002722
  • Datum: WGS84
  • Township: T27N
  • Range: R11W
  • Section: 36
  • PLSS Details: 1900 feet S and 2400 feet E of the NW corner
  • Location Description: About 1900 ft south and 2400 ft east of the NW corner of Section 36, T27N, R11W.
  • Map Unit: 73019—Poynor very gravelly silt loam, 1 to 8 percent slopes
  • State: Missouri
  • County: MO067—Douglas
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO067—Douglas County, Missouri

    • PEDON

  • Describers Name: KEB and GWS.
  • 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 - 30 to 80 cm.
  • Classificaton Date - 4/18/2012
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Poynor
  • Taxonomic Class - Loamy-skeletal over clayey, siliceous, semiactive, mesic Typic Paleudults
  • Taxon Kind - taxadjunct
  • PSC - 30 to 80 cm.
  • Classificaton Date - 8/27/1997
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: slope alluvium over residuum
  • Landscape: hills
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/27/1997 (actual site observation date)
  • Air Photo ID: 2251-174
  • Surface Cover Properties:
  • 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

    30—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

    6

    —

    —

    372

    —

    355

    1092

    —

    —

    12.8

    —

    —

    —

    —

    —

    —

    —

    5227

    Mansfield

    TAPS
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments; abrupt smooth boundary.
    A—3 to 13 centimeters (1.2 to 5.1 inches); brown (10YR 5/3), light gray (10YR 7/2), dry; gravelly silt loam; moderate fine granular structure; very friable; 7.0 very fine to coarse roots; 25 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU020444
    E—13 to 30 centimeters (5.1 to 11.8 inches); light yellowish brown (10YR 6/4), very pale brown (10YR 7/3), dry; very gravelly silt loam; weak very fine and fine subangular blocky structure; friable; 7.0 very fine to coarse roots; 35 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.7, hellige-truog; clear smooth boundary. Lab sample # MU020445
    Bt1—30 to 53 centimeters (11.8 to 20.9 inches); strong brown (7.5YR 5/6), very pale brown (10YR 7/4), dry; very gravelly silt loam; moderate very fine and fine subangular blocky structure; firm; 3.0 very fine to medium roots; 20 percent faint clay films on faces of peds and 60 percent prominent skeletans on faces of peds; 35 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU020446. discontinuous - phpvsfiid 128446; discontinuous - phpvsfiid 128447; discontinuous - phpvsfiid 128446; discontinuous - phpvsfiid 128447
    Bt2—53 to 76 centimeters (20.9 to 29.9 inches); strong brown (7.5YR 4/6) very gravelly silty clay loam; moderate very fine subangular blocky structure; firm; 3.0 very fine to medium roots; 30 percent distinct brown (7.5YR 4/4) clay films on rock fragments and 40 percent prominent skeletans on faces of peds; 40 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU020447. discontinuous - phpvsfiid 128448; discontinuous - phpvsfiid 131164; discontinuous - phpvsfiid 128448; discontinuous - phpvsfiid 131164
    2Bt3—76 to 104 centimeters (29.9 to 40.9 inches); 65 percent yellowish red (5YR 4/6) and 35 percent strong brown (7.5YR 4/6) very gravelly silty clay; moderate fine subangular blocky structure; firm; 0.5 very fine to medium roots; 30 percent prominent brown (7.5YR 5/4) skeletans on faces of peds and 60 percent prominent brown (7.5YR 4/4) clay films on rock fragments; 45 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU020448. discontinuous - phpvsfiid 131165; discontinuous - phpvsfiid 131166; discontinuous - phpvsfiid 131165; discontinuous - phpvsfiid 131166
    2Bt4—104 to 147 centimeters (40.9 to 57.9 inches); 45 percent yellowish red (5YR 4/6) and 30 percent strong brown (7.5YR 4/6) and 10 percent yellowish brown (10YR 5/4) and 10 percent brownish yellow (10YR 6/6) and 5 percent red (10R 4/6) extremely cobbly clay; moderate fine subangular blocky structure; firm; 0.5 very fine and fine roots; 60 percent prominent reddish brown (5YR 4/4) clay films on rock fragments; 10 percent by volume angular 250-425-600 millimeter limestone, cherty fragments and 20 percent by volume angular 2-39-75 millimeter limestone, cherty fragments and 30 percent by volume angular 75-162-250 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # MU020449. discontinuous - phpvsfiid 131167; discontinuous - phpvsfiid 131167
    2Bt5—147 to 178 centimeters (57.9 to 70.1 inches); 75 percent red (10R 4/6) and 20 percent yellow (10YR 7/8) and 5 percent light gray (10YR 7/1) cobbly clay; moderate very fine and fine subangular blocky structure; firm; 0.5 very fine and fine roots; 50 percent prominent dark reddish brown (2.5YR 3/4) clay films on faces of peds; 10 percent by volume angular 75-162-250 millimeter limestone, cherty fragments and 15 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; gradual wavy boundary. Lab sample # MU020450. discontinuous - phpvsfiid 131168; discontinuous - phpvsfiid 131168
    2Bt6—178 to 203 centimeters (70.1 to 79.9 inches); 45 percent red (10R 4/6) and 30 percent light gray (10YR 7/1) and 25 percent yellow (10YR 7/8) clay; moderate very fine and fine subangular blocky structure; firm; 0.5 very fine and fine roots; 25 percent prominent dark reddish brown (2.5YR 3/4) clay films on faces of peds and 40 percent prominent grayish brown (10YR 5/2) clay films on faces of peds; fragments; very strongly acid, pH 4.7, hellige-truog. Lab sample # MU020451. discontinuous - phpvsfiid 131169; discontinuous - phpvsfiid 131170; discontinuous - phpvsfiid 131169; discontinuous - phpvsfiid 131170