IDENTIFIERS

  • Current Taxon Name (Soil Name): Pineknot
  • OSD
  • Series Extent
  • User Site ID: 1995MO035008M
  • User Pedon ID: 1995MO035008M
  • Transect:
  • Transect Stop Number - 4
  • Transect Interval - 200.0
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9560108
  • NCSS Pedon Lab Data NASIS Record ID - 31944
  • User Project ID: 2021-25NCSPR013
  • Project Name: MLRA 116A - Mark Twain National Forest Update
  • Print Date: 4/28/2025

    • 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: 37.0130472
  • Std. Longitude: -91.1969472
  • Datum: WGS84
  • 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: Scott Paine
  • Current Taxonomic Class: Fine-loamy over clayey, siliceous over mixed, subactive, mesic Typic Paleudults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Pineknot
  • PSC - 13 to 100 cm.
  • Classificaton Date - 12/13/2023
  • Classifier - Campbell and Meinert
  • Soil Taxonomic Edition - thirteenth edition
  • Moisture Subclass - oxyaquic
  • Sampled As Information:
  • Soil Name - SND
  • Taxonomic Class - Mesic
  • Taxon Kind - taxon above family
  • PSC - 13 to 63 cm.
  • Classificaton Date - 9/14/1995
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1
  • Field Measured Properties: 39 Cation exchange capacity to clay ratio


    • SITE

  • Parent Material: loess over residuum
  • Landscape: hills
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: shoulder
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/14/1995 (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—13

    13—152

    —-

    —-
    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

    7

    —

    —

    286.3

    —

    300

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 13 centimeters (0.0 to 5.1 inches); brown (10YR 5/3) gravelly silt loam; weak fine subangular blocky, and weak fine granular structure; friable; 7.0 very fine and fine roots and 3.0 medium and coarse roots; very fine and fine tubular pores; 20 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; extremely acid, pH 4.4, hellige-truog; clear smooth boundary. Lab sample # MU054234
    Bt1—13 to 25 centimeters (5.1 to 9.8 inches); yellowish brown (10YR 5/4) silt loam; moderate fine and medium subangular blocky structure; friable; 3.0 fine and medium roots and 0.9 coarse roots; 1.0 fine tubular pores; 15 percent faint strong brown (7.5YR 4/6) clay films on vertical faces of peds and 15 percent faint pale brown (10YR 6/3) silt coats on faces of peds and 15 percent distinct dark grayish brown (10YR 4/2) organic stains in root channels and/or pores; 2 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.7, hellige-truog; clear smooth boundary. Lab sample # MU054235
    Bt2—25 to 43 centimeters (9.8 to 16.9 inches); yellowish brown (10YR 5/6) silty clay loam; moderate medium subangular blocky parts to weak fine subangular blocky structure; friable; 3.0 fine and medium roots and 0.9 coarse roots; 1.0 fine tubular pores; 35 percent distinct strong brown (7.5YR 4/6) clay films on faces of peds; 10 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # MU054236
    2Bt3—43 to 74 centimeters (16.9 to 29.1 inches); 80 percent strong brown (7.5YR 5/6) and 20 percent red (2.5YR 4/6) gravelly silty clay; moderate fine angular blocky structure; very firm; 0.9 very fine and fine roots; 1.0 fine tubular pores; 35 percent prominent strong brown (7.5YR 4/6) clay films on all faces of peds and 35 percent prominent pale brown (10YR 6/3) silt coats throughout; 5 percent by volume nonflat indurated 75-162-250 millimeter limestone, cherty fragments and 30 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.7, hellige-truog; gradual wavy boundary. Lab sample # MU054237
    2Bt4—74 to 99 centimeters (29.1 to 39.0 inches); yellowish brown (10YR 5/6) and dark yellowish brown (10YR 4/6) gravelly clay; weak very fine angular blocky structure; very firm; 0.9 very fine and fine roots; 1.0 fine vesicular pores; 15 percent prominent dark gray (10YR 4/1) clay films in root channels and/or pores and 35 percent distinct strong brown (7.5YR 4/6) clay films on faces of peds and 35 percent faint dark red (2.5YR 3/6) clay films on all faces of peds; 5 percent by volume nonflat indurated 75-162-250 millimeter limestone, cherty fragments and 25 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.7, hellige-truog; gradual wavy boundary. Lab sample # MU054238
    2Bt5—99 to 152 centimeters (39.0 to 59.8 inches); 50 percent dark yellowish brown (10YR 3/6) and 50 percent dark yellowish brown (10YR 4/6) gravelly clay; weak fine and medium angular blocky structure; very firm; 0.9 very fine and fine roots; 15 percent prominent dark gray (7.5YR 4/1) clay films in root channels and/or pores and 35 percent distinct strong brown (7.5YR 5/8) clay films on all faces of peds and 35 percent faint dark yellowish brown (10YR 3/6) clay films on all faces of peds and 35 percent prominent light gray (10YR 7/2) clay films in root channels and/or pores; 25 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog. Lab sample # MU054239