IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1999MO035002M
  • User Pedon ID: 1999MO035002M
  • Transect:
  • Transect Stop Number - 2
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9961202
  • NCSS Pedon Lab Data NASIS Record ID - 31559
  • User Project ID: 2021-25NCSPR013
  • Project Name: MLRA 116A - Mark Twain National Forest Update
  • Print Date: 1/28/2025

    • 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: 37.0109028
  • Std. Longitude: -91.1749500
  • Datum: WGS84
  • Township: T27N
  • Range: R2W
  • Section: 16
  • PLSS Details: 2250 feet E and 1020 feet N of the SW corner
  • Location Description: 2250 feet east and 1020 feet north of the SW corner of Sec.16 T.27N., R.2W.
  • Map Unit: 73395—Clarksville very gravelly silt loam, 3 to 8 percent slopes
  • State: Missouri
  • County: MO035—Carter
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO035—Carter County, Missouri
  • 7.5 Minute USGS Quad: 37091-A2—Stegall Mountain, Missouri

    • PEDON

  • Describers Name: MS, JK, DMM
  • Current Taxonomic Class: Loamy-skeletal, siliceous, active, 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 - 33 to 83 cm.
  • Classificaton Date - 3/8/2011
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Rueter
  • Taxonomic Class - Loamy-skeletal, siliceous, active, mesic Typic Paleudalfs
  • Taxon Kind - series
  • PSC - 33 to 83 cm.
  • Classificaton Date - 2/22/1999
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1


    • SITE

  • Parent Material: slope alluvium derived from limestone and sandstone over residuum weathered from dolomite
  • Landscape: hills
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Runoff: negligible
  • Drainage Class: well
  • Surface Fragments: 2.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 2/22/1999 (actual site observation date)
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—20

    33—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

    20

    —

    —

    274

    —

    180

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 10 centimeters (0.0 to 3.9 inches); brown (10YR 5/3) very gravelly sandy loam; moderate fine granular, and moderate fine subangular blocky structure; very friable; 1.0 medium and coarse roots and 7.0 fine roots; 7.0 fine and medium interstitial and tubular and 3.0 fine and medium tubular pores; 40 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; abrupt smooth boundary. Lab sample # MU063657
    A2—10 to 20 centimeters (3.9 to 7.9 inches); grayish brown (10YR 5/2) fine sandy loam; weak fine subangular blocky structure; very friable; 3.0 fine to coarse roots; 3.0 fine tubular pores; 10 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; abrupt wavy boundary. Lab sample # MU063658
    E—20 to 33 centimeters (7.9 to 13.0 inches); pale brown (10YR 6/3) loam; weak fine subangular blocky structure; friable; 3.0 fine and medium roots and 0.9 fine roots; 9.0 fine tubular pores; 10 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.6, hellige-truog; clear wavy boundary. Lab sample # MU063659
    Bt1—33 to 46 centimeters (13.0 to 18.1 inches); strong brown (7.5YR 4/6) loam; weak fine subangular blocky structure; friable; 0.9 fine and medium roots and 0.1 coarse roots; 3.0 fine and medium tubular pores; 15 percent faint strong brown (7.5YR 4/6), moist, clay films on faces of peds and 15 percent faint light brownish gray (10YR 6/2), moist, silt coats on faces of peds; 10 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU063660
    Bt2—46 to 61 centimeters (18.1 to 24.0 inches); 70 percent light yellowish brown (10YR 6/4) and 30 percent strong brown (7.5YR 4/6) very gravelly loam; moderate fine subangular blocky structure; friable; 0.9 fine and medium roots; 3.0 fine and medium tubular pores; 15 percent faint yellowish brown (10YR 5/4), moist, silt coats on faces of peds and 35 percent faint strong brown (7.5YR 4/6), moist, clay films on faces of peds; 55 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU063661
    Bt3—61 to 76 centimeters (24.0 to 29.9 inches); light yellowish brown (10YR 6/4) extremely gravelly loam; 15 percent light brownish gray (10YR 6/2) fine distinct mottles; weak coarse prismatic parts to weak fine subangular blocky structure; friable; 0.9 fine and medium roots; 3.0 fine to coarse interstitial and tubular pores; 15 percent distinct yellowish red (5YR 4/6), moist, clay films on rock fragments and 35 percent distinct strong brown (7.5YR 4/6), moist, clay films on rock fragments; 3 percent by volume nonflat subangular indurated 75-162-250 millimeter sandstone, unspecified fragments and 25 percent by volume 2-39-75 millimeter sandstone, unspecified fragments and 40 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 5.0, hellige-truog; gradual smooth boundary. Lab sample # MU063662
    Bt4—76 to 99 centimeters (29.9 to 39.0 inches); 60 percent red (2.5YR 4/6) and 40 percent light yellowish brown (10YR 6/4) extremely gravelly loam; 15 percent light brownish gray (10YR 6/2) fine distinct mottles; weak coarse prismatic parts to weak fine subangular blocky structure; friable; 0.9 fine and medium roots; 3.0 fine to coarse interstitial and tubular pores; 35 percent distinct yellowish red (5YR 4/6), moist, clay films on faces of peds; 30 percent by volume 2-39-75 millimeter sandstone, unspecified fragments and 40 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # MU063663
    Bt5—99 to 122 centimeters (39.0 to 48.0 inches); dark red (2.5YR 3/6) very gravelly clay loam; weak fine subangular blocky structure; firm; 0.9 fine and medium roots; 9.0 fine and medium tubular pores; 35 percent prominent light gray (10YR 7/2), moist, silt coats on faces of peds and 75 percent distinct dark red (2.5YR 3/6), moist, clay films on faces of peds; 5 percent by volume nonflat subangular indurated 75-162-250 millimeter sandstone, unspecified fragments and 30 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # MU063664
    Bt6—122 to 142 centimeters (48.0 to 55.9 inches); red (2.5YR 4/6) very gravelly clay; moderate fine angular blocky structure; firm; 0.9 fine and medium roots; 9.0 fine to coarse tubular pores; 15 percent prominent pale brown (10YR 6/3), moist, silt coats on faces of peds and 75 percent faint red (2.5YR 4/6), moist, clay films on tops of soil columns; 10 percent by volume nonflat indurated 75-162-250 millimeter limestone, cherty fragments and 15 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # MU063665
    2Bt7—142 to 163 centimeters (55.9 to 64.2 inches); red (2.5YR 4/6) clay; strong fine angular blocky structure; firm; 0.9 fine and medium roots; 9.0 fine tubular pores; 75 percent dark red (2.5YR 3/6), moist, clay films on all faces of peds; 5 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # MU063666
    2Bt8—163 to 185 centimeters (64.2 to 72.8 inches); 50 percent red (2.5YR 4/6) and 50 percent yellowish brown (10YR 5/6) clay; moderate coarse angular blocky structure; firm; 0.9 fine and medium roots; 9.0 fine to coarse tubular pores; 75 percent faint red (2.5YR 4/6), moist, clay films on faces of peds; 5 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; gradual wavy boundary. Lab sample # MU063667
    2Bt9—185 to 203 centimeters (72.8 to 79.9 inches); yellowish red (5YR 4/6) clay; moderate coarse angular blocky structure; firm; 0.9 fine and medium roots; 3.0 fine interstitial and tubular pores; 75 percent faint yellowish red (5YR 5/6), moist, clay films on faces of peds; 5 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU063668