IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1997MO067115M
  • User Pedon ID: 1997MO067115
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9706723
  • Print Date: 3/31/2025

    • 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: 36.8233912
  • Std. Longitude: -92.0984776
  • Datum: WGS84
  • Township: T24N
  • Range: R11W
  • Section: 24
  • PLSS Details: 1050 feet W and 750 feet N of the SE corner
  • Location Description: 1050 ft. west and750 ft. north of the SE corner of section 24, T24N, R11W. 50 ft south of forest service road.
  • 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, WLS, GWS and KR
  • Current Taxonomic Class: Loamy-skeletal, siliceous Typic Paleudults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: map unit inclusion
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Clarksville
  • PSC - 36 to 86 cm.
  • Classificaton Date - 4/18/2012
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Pamoa
  • Taxonomic Class - Very-fine, parasesquic, isohyperthermic Torrertic Haplustolls
  • Taxon Kind - taxadjunct
  • PSC - 36 to 86 cm.
  • Classificaton Date - 6/3/1997
  • 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: convex
  • 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: 6/3/1997 (actual site observation date)
  • Air Photo ID: 2251-170
  • 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

    0—20

    36—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

    —

    —

    312

    —

    270

    1092

    —

    —

    12.8

    —

    —

    —

    —

    —

    —

    —

    5227

    Mansfield

    TAPS
    A—0 to 8 centimeters (0.0 to 3.1 inches); light gray (10YR 7/2), dark grayish brown (10YR 4/2), moist; extremely gravelly silt loam; moderate fine and medium granular structure; friable; 6.0 very fine to coarse roots throughout; 60 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.3, hellige-truog; abrupt smooth boundary. Lab sample # MU057338
    E—8 to 20 centimeters (3.1 to 7.9 inches); light gray (10YR 7/2), brown (10YR 5/3), moist; gravelly silt loam; moderate medium granular structure; friable; 6.0 very fine to coarse roots throughout; 25 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.4, hellige-truog; clear smooth boundary. Lab sample # MU057339
    EB—20 to 36 centimeters (7.9 to 14.2 inches); 80 percent very pale brown (10YR 7/4) and 20 percent brownish yellow (10YR 6/6), 80 percent light yellowish brown (10YR 6/4) and 20 percent brown (10YR 5/3), moist; gravelly silt loam; moderate very fine subangular blocky structure; friable; 3.0 very fine to coarse roots throughout; 7.0 very fine and fine moderate-continuity interstitial pores; 10 percent faint clay films in root channels and/or pores; 15 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.2, hellige-truog; clear smooth boundary. Lab sample # MU057340. discontinuous - phpvsfiid 128256; discontinuous - phpvsfiid 128256
    Bt1—36 to 76 centimeters (14.2 to 29.9 inches);, 65 percent brown (7.5YR 5/4) and 35 percent light brown (7.5YR 6/3), moist; very gravelly silt loam; moderate fine subangular blocky structure; friable; 3.0 very fine to coarse roots throughout; 15 percent distinct light brown (7.5YR 6/3) skeletans on faces of peds and 30 percent prominent dark red (2.5YR 3/6) clay films on rock fragments; 25 percent by volume angular 2-39-75 millimeter limestone, cherty fragments and 25 percent by volume angular 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.2, hellige-truog; clear wavy boundary. Lab sample # MU057341. The 25% angular gravel in this horizon is paragravel.; discontinuous - phpvsfiid 128251; discontinuous - phpvsfiid 128252; discontinuous - phpvsfiid 128251; discontinuous - phpvsfiid 128252
    Bt2—76 to 97 centimeters (29.9 to 38.2 inches);, 70 percent light brown (7.5YR 6/4) and 30 percent very pale brown (10YR 7/3), moist; extremely gravelly silt loam; moderate fine subangular blocky structure; friable; 0.5 very fine to medium roots throughout; 40 percent prominent very pale brown (10YR 7/3) skeletans on faces of peds and 75 percent prominent dark red (2.5YR 3/6) clay films on rock fragments; 10 percent by volume angular 2-39-75 millimeter unspecified fragments and 15 percent by volume angular 75-162-250 millimeter limestone, cherty fragments and 35 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.1, hellige-truog; clear smooth boundary. Lab sample # MU057342. The 10 % angular gravel in this horizon is paragravel.; continuous - phpvsfiid 128253; discontinuous - phpvsfiid 128254; continuous - phpvsfiid 128253; discontinuous - phpvsfiid 128254
    2Bt3—97 to 114 centimeters (38.2 to 44.9 inches);, 60 percent dark red (2.5YR 3/6) and 40 percent light brown (7.5YR 6/4), moist; very gravelly clay; moderate very fine subangular blocky structure; firm; 0.5 very fine to medium roots throughout; 75 percent prominent dark red (2.5YR 3/6) clay films on rock fragments; 35 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.9, hellige-truog; clear wavy boundary. Lab sample # MU057343. continuous - phpvsfiid 128255; continuous - phpvsfiid 128255
    2Bt4—114 to 147 centimeters (44.9 to 57.9 inches);, 90 percent red (10R 4/8) and 10 percent light brown (7.5YR 6/4), moist; gravelly clay; moderate very fine subangular blocky structure; firm; 0.5 very fine and fine roots throughout; 80 percent prominent red (10R 4/8) clay films on faces of peds; 15 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 5.0, hellige-truog; gradual smooth boundary. Lab sample # MU057344. continuous - phpvsfiid 128281; continuous - phpvsfiid 128281
    2Bt5—147 to 178 centimeters (57.9 to 70.1 inches);, 80 percent red (10R 4/6) and 15 percent reddish yellow (7.5YR 6/6) and 5 percent pale brown (10YR 6/3), moist; clay; weak fine subangular blocky structure; firm; 0.5 fine roots throughout; 80 percent prominent red (10R 4/6) clay films on faces of peds; 3 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.9, hellige-truog; clear wavy boundary. Lab sample # MU057345. continuous - phpvsfiid 128274; continuous - phpvsfiid 128274
    2Bt6—178 to 203 centimeters (70.1 to 79.9 inches);, 60 percent red (10R 4/6) and 30 percent brown (7.5YR 5/4) and 10 percent pinkish gray (7.5YR 6/2), moist; very cobbly clay; weak very fine subangular blocky structure; firm; 0.5 fine roots throughout; 80 percent prominent red (10R 4/6) clay films on faces of peds; 10 percent by volume angular 2-39-75 millimeter limestone, cherty fragments and 25 percent by volume angular 75-162-250 millimeter limestone, cherty fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU057346. continuous - phpvsfiid 128275; continuous - phpvsfiid 128275