IDENTIFIERS

  • Current Taxon Name (Soil Name): Clarksville
  • OSD
  • Series Extent
  • User Site ID: 1994MO203053M
  • User Pedon ID: 1994MO203053M
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9461353
  • NCSS Pedon Lab Data NASIS Record ID - 25323
  • Print Date: 12/6/2025

    • 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: 37.1731750
  • Std. Longitude: -91.1392833
  • Datum: WGS84
  • Township: T29N
  • Range: R2W
  • Section: 14
  • PLSS Details: 1477 feet E and 942 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, Sid Vander veen, Keith Knelle
  • Current Taxonomic Class: Fine-loamy, semiactive, mesic Typic Hapludults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: map unit inclusion
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 53
  • Correlated Information:
  • Soil Name - Clarksville
  • PSC - 28 to 78 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 - Fine-loamy, siliceous, semiactive, mesic Typic Hapludults
  • Taxon Kind - series
  • PSC - 15 to 65 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: slope alluvium derived from mixed
  • Landscape: hills
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: toeslope
  • Slope Position: lower third
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • 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
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—15

    15—163

    —15—

    —148—
    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

    21

    —

    —

    264.6

    —

    45

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 15 centimeters (0.0 to 5.9 inches); brown (10YR 4/3) broken face extremely gravelly silt loam; moderate fine granular structure; very friable; 0.5 medium roots throughout and 0.5 fine roots throughout and 0.5 coarse roots throughout; 3.0 very fine interstitial pores; 35 percent distinct dark grayish brown (10YR 4/2), moist, organic stains on all faces of peds; 65 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001421; observed in pit, small
    Bt1—15 to 28 centimeters (5.9 to 11.0 inches); 50 percent light yellowish brown (10YR 6/4) broken face and 50 percent yellowish brown (10YR 5/4) broken face gravelly silt loam; moderate fine and medium subangular blocky structure; firm; 3.0 very fine roots throughout and 0.5 medium roots throughout and 0.5 fine roots throughout; 3.0 medium tubular and 0.5 fine interstitial and 0.5 fine tubular pores; 12 percent distinct light yellowish brown (10YR 6/4), moist, clay films on all faces of peds and 12 percent distinct brown (10YR 4/3), moist, organic stains on all faces of peds; 20 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001422; observed in pit, small
    Bt2—28 to 36 centimeters (11.0 to 14.2 inches); yellowish brown (10YR 5/6) broken face gravelly silt loam; moderate fine and medium subangular blocky structure; firm; 0.5 medium roots throughout and 0.5 fine roots throughout; 3.0 very fine tubular and 0.5 fine vesicular and 0.5 fine interstitial pores; 12 percent distinct strong brown (7.5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct yellowish brown (10YR 5/4), moist, silt coats on all faces of peds and 35 percent distinct brown (10YR 5/3), moist, silt coats on all faces of peds; 25 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001423; observed in pit, small
    Bt3—36 to 46 centimeters (14.2 to 18.1 inches); 50 percent yellowish brown (10YR 5/6) broken face and 50 percent strong brown (7.5YR 5/6) broken face very gravelly silt loam; moderate fine and medium subangular blocky structure; firm; 0.5 fine roots throughout; 10.0 very fine tubular and 0.5 medium tubular pores; 12 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct yellowish brown (10YR 5/4), moist, silt coats on all faces of peds; 35 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001424; observed in pit, small
    Bt4—46 to 64 centimeters (18.1 to 25.2 inches); strong brown (7.5YR 5/6) broken face very gravelly silt loam; moderate fine and medium subangular blocky structure; firm; 0.5 fine roots throughout; 0.5 medium tubular and 3.0 fine tubular pores; 12 percent distinct strong brown (7.5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct yellowish brown (10YR 5/4), moist, silt coats on all faces of peds; 35 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001425; observed in pit, small
    Bt5—64 to 76 centimeters (25.2 to 29.9 inches); 50 percent strong brown (7.5YR 5/6) broken face and 50 percent strong brown (7.5YR 4/6) broken face gravelly silty clay loam; moderate fine and medium subangular blocky structure; firm; 0.5 fine roots throughout; 3.0 very fine tubular and 0.5 fine vesicular and 0.5 fine interstitial pores; 12 percent distinct yellowish brown (10YR 5/4), moist, silt coats on all faces of peds and 35 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds; 20 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001426; observed in pit, small
    Bt61—76 to 89 centimeters (29.9 to 35.0 inches); strong brown (7.5YR 5/6) broken face silty clay loam; moderate medium subangular blocky, and weak medium platy structure; firm; 0.5 fine roots throughout; 0.5 medium interstitial and 3.0 medium tubular and 0.5 fine tubular pores; 12 percent distinct yellowish brown (10YR 5/4), moist, silt coats on all faces of peds and 35 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds; 10 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001427; observed in pit, small
    Bt62—89 to 99 centimeters (35.0 to 39.0 inches); strong brown (7.5YR 5/6) broken face silty clay loam; moderate medium subangular blocky, and weak medium platy structure; firm; 0.5 fine roots throughout; 3.0 medium tubular and 0.5 medium interstitial and 0.5 fine tubular pores; 12 percent distinct yellowish brown (10YR 5/4), moist, silt coats on all faces of peds and 35 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds; 10 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001428; observed in pit, small
    Bt7—99 to 112 centimeters (39.0 to 44.1 inches); 50 percent strong brown (7.5YR 5/6) broken face and 50 percent strong brown (7.5YR 4/6) broken face silty clay loam; moderate medium subangular blocky structure; firm; 0.5 fine roots throughout; 0.5 medium interstitial and 3.0 medium tubular and 0.5 fine tubular pores; 35 percent prominent red (2.5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct yellowish red (5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct light brownish gray (10YR 6/2), moist, silt coats on all faces of peds; 5 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear wavy boundary. Lab sample # MU001429; observed in pit, small
    Bt81—112 to 130 centimeters (44.1 to 51.2 inches); 40 percent yellowish red (5YR 4/6) broken face and 40 percent light brownish gray (10YR 6/2) broken face and 10 percent strong brown (7.5YR 5/6) broken face gravelly silt loam; weak fine platy, and weak medium prismatic structure; firm; 0.5 fine roots throughout; 3.0 very fine tubular and 0.5 fine vesicular and 0.5 fine interstitial pores; 12 percent distinct red (2.5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct gray (10YR 5/1), 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; 20 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001430; observed in pit, small
    Bt82—130 to 147 centimeters (51.2 to 57.9 inches); 50 percent strong brown (7.5YR 5/6) broken face and 50 percent grayish brown (10YR 5/2) broken face gravelly silt loam; weak fine platy, and weak medium prismatic structure; firm; 0.5 fine roots throughout; 3.0 very fine tubular and 0.5 fine vesicular and 0.5 fine interstitial pores; 12 percent distinct red (2.5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct gray (10YR 5/1), 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; 20 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments; clear smooth boundary. Lab sample # MU001431; observed in pit, small
    Bt9—147 to 163 centimeters (57.9 to 64.2 inches); gravelly loam; weak fine platy, and weak medium prismatic structure; firm; 0.5 fine roots throughout; 0.5 fine vesicular and 3.0 fine tubular pores; 12 percent distinct strong brown (7.5YR 4/6), moist, clay films on all faces of peds and 35 percent distinct gray (10YR 5/1), 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; 20 percent by volume nonflat subangular strongly coherent cemented 2-?-75 millimeter chert fragments. Lab sample # MU001432; observed in pit, small