IDENTIFIERS

  • Current Taxon Name (Soil Name): Poynor
  • OSD
  • Series Extent
  • User Site ID: 1994MO203927M
  • User Pedon ID: 1994MO203927M
  • Transect:
  • Transect Stop Number - 3
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M94E_W03
  • NCSS Pedon Lab Data NASIS Record ID - 31985
  • Print Date: 4/26/2025

    • 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: 37.1336500
  • Std. Longitude: -91.1004000
  • Datum: WGS84
  • State: Missouri
  • County: MO203—Shannon
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO613—Shannon County, Missouri, North & West PartsMO203—Shannon County, Missouri
  • 7.5 Minute USGS Quad: 37091-B1—Exchange, Missouri

    • PEDON

  • Describers Name: LT
  • Current Taxonomic Class: Loamy-skeletal over clayey, 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 - Poynor
  • PSC - 59 to 100 cm.
  • Classificaton Date - 3/28/2011
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Poynor
  • Taxonomic Class - Loamy-skeletal over clayey, siliceous, semiactive, mesic Typic Paleudults
  • Taxon Kind - series
  • PSC - 56 to 100 cm.
  • Classificaton Date - 7/13/1994
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 27 Strongly contrasting textural stratification (depth in inches) and 27 Cation exchange capacity to clay ratio


    • SITE

  • Parent Material: residuum and/or slope alluvium
  • Landscape: hills
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: toeslope
  • Slope Shape Across: concave
  • Slope Shape Down: concave
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/13/1994 (actual site observation date)
  • Air Photo ID: 16
  • 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

    3—28

    28—143

    —-

    —-
    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

    32

    —

    —

    268

    —

    240

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments.
    A1—3 to 13 centimeters (1.2 to 5.1 inches); dark brown (10YR 3/3) extremely gravelly sandy loam; moderate very fine granular structure; very friable; 10.0 very fine roots; 30.0 fine and medium interstitial pores; 25 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments and 30 percent by volume nonflat subrounded indurated 2-40-75 millimeter chert fragments and 30 percent by volume nonflat subrounded indurated 75-162-250 millimeter chert fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU052188
    A2—13 to 21 centimeters (5.1 to 8.3 inches); dark grayish brown (10YR 4/2) extremely gravelly loam; moderate medium granular structure; very friable; 1.0 medium and coarse roots and 1.0 fine roots; 5.0 very fine interstitial and 15.0 medium tubular pores; 5 percent faint dark grayish brown (10YR 4/2), moist, organic stains; 25 percent by volume nonflat subrounded indurated 2-40-75 millimeter chert fragments and 25 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments and 30 percent by volume nonflat subrounded indurated 75-162-250 millimeter chert fragments; very strongly acid, pH 4.5, hellige-truog; clear smooth boundary. Lab sample # MU052189
    E—21 to 28 centimeters (8.3 to 11.0 inches); brown (10YR 5/3) extremely gravelly loam; weak fine subangular blocky structure; friable; 2.0 very fine and fine roots and 2.0 medium roots and 0.5 coarse roots; 10.0 very fine and fine tubular and 1.0 medium tubular pores; 5 percent distinct brown (10YR 4/3), moist, organic stains on faces of peds and in pores; 11 percent by volume nonflat subrounded indurated 75-162-250 millimeter chert fragments and 25 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments and 25 percent by volume nonflat subrounded indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.6, hellige-truog; clear wavy boundary. Lab sample # MU052190
    Bt1—28 to 36 centimeters (11.0 to 14.2 inches); yellowish brown (10YR 5/4) extremely gravelly loam; weak fine subangular blocky structure; friable; 6.0 medium roots and 2.0 fine roots; 2.0 medium tubular and 3.0 fine tubular pores; 1 percent faint yellowish brown (10YR 5/4), moist, clay films; 20 percent by volume nonflat subrounded indurated 75-162-250 millimeter chert fragments and 25 percent by volume nonflat subrounded indurated 2-40-75 millimeter chert fragments and 25 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # MU052191
    Bt2—36 to 51 centimeters (14.2 to 20.1 inches); pale brown (10YR 6/3) extremely gravelly loam; weak fine subangular blocky structure; friable; 4.0 fine roots; 8.0 very fine and fine tubular pores; 1 percent distinct yellowish red (5YR 4/6), moist, clay films on rock fragments; 20 percent by volume nonflat subrounded indurated 75-162-250 millimeter chert fragments and 30 percent by volume nonflat subrounded indurated 2-40-75 millimeter chert fragments and 30 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU052192
    Bt3—51 to 59 centimeters (20.1 to 23.2 inches); yellowish brown (10YR 5/4) extremely gravelly loam; weak fine subangular blocky structure; friable; 3.0 fine roots; 5.0 fine tubular and 10.0 fine tubular pores; 10 percent prominent strong brown (7.5YR 4/6), moist, clay films on rock fragments and 30 percent prominent pale brown (10YR 6/3), moist, silt coats on vertical faces of peds; 15 percent by volume nonflat subrounded indurated 75-162-250 millimeter chert fragments and 35 percent by volume nonflat subrounded indurated 2-40-75 millimeter chert fragments and 35 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; clear wavy boundary. Lab sample # MU052193
    Bt4—59 to 72 centimeters (23.2 to 28.3 inches); yellowish brown (10YR 5/4) extremely gravelly loam; weak fine subangular blocky structure; friable; 2.0 fine roots; 3.0 fine interstitial and 8.0 fine tubular pores; strong brown (7.5YR 5/6), moist, and 15 percent prominent strong brown (7.5YR 4/6), moist, clay films on vertical faces of peds and 25 percent prominent light yellowish brown (10YR 6/4), moist, silt coats on all faces of peds; 10 percent by volume nonflat subrounded indurated 75-162-250 millimeter chert fragments and 25 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments and 30 percent by volume nonflat subrounded indurated 2-40-75 millimeter chert fragments; strongly acid, pH 5.1, hellige-truog; clear wavy boundary. Lab sample # MU052194. prominent 10 percent loamy material in pores, 7.5YR 4/6
    2Bt5—72 to 89 centimeters (28.3 to 35.0 inches); 70 percent yellowish red (5YR 4/6) gravelly clay; moderate medium subangular blocky parts to moderate fine angular blocky structure; firm; 1.0 fine roots; 7.0 fine and medium tubular and 3.0 fine interstitial pores; 30 percent prominent red (2.5YR 4/6), moist, clay films on all faces of peds; 25 percent fine spherical iron-manganese concretions; 5 percent by volume nonflat subrounded indurated 75-162-250 millimeter chert fragments and 10 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments and 15 percent by volume nonflat subrounded indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU052195
    2Bt61—89 to 100 centimeters (35.0 to 39.4 inches); 50 percent yellowish red (5YR 5/6) and 35 percent strong brown (7.5YR 5/8) gravelly clay; strong very fine and fine angular blocky structure; firm; 1.0 fine roots; 3.0 fine tubular pores; 35 percent prominent red (2.5YR 5/8), moist, clay films on all faces of peds; 1 percent fine and medium spherical iron-manganese concretions; 20 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU052196
    2Bt62—100 to 112 centimeters (39.4 to 44.1 inches); 50 percent yellowish red (5YR 5/6) and 35 percent strong brown (7.5YR 5/8) gravelly clay; strong very fine and fine angular blocky structure; firm; 1.0 fine roots; 3.0 fine tubular pores; 35 percent prominent red (2.5YR 5/8), moist, clay films on all faces of peds; 20 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU052197
    2Bt71—112 to 125 centimeters (44.1 to 49.2 inches); 60 percent yellowish red (5YR 5/6) and 20 percent strong brown (7.5YR 5/6) gravelly clay; moderate medium subangular blocky parts to strong fine angular blocky structure; firm; 1.0 fine roots; 3.0 very fine tubular pores; 35 percent prominent red (2.5YR 4/6), moist, clay films on all faces of peds; 25 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU052198
    2Bt72—125 to 143 centimeters (49.2 to 56.3 inches); 60 percent yellowish red (5YR 5/6) and 20 percent strong brown (7.5YR 5/6) gravelly clay; moderate medium subangular blocky parts to moderate fine angular blocky structure; firm; 1.0 fine roots; 3.0 very fine tubular pores; 35 percent prominent red (2.5YR 5/8), moist, clay films on all faces of peds; 25 percent by volume nonflat angular indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog. Lab sample # MU052199