IDENTIFIERS

  • Current Taxon Name (Soil Name): Poynor
  • OSD
  • Series Extent
  • User Site ID: 1996MO203026M
  • User Pedon ID: 1996MO203026M
  • User Site Association ID: 8638
  • Transect:
  • User Transect ID - shannon-80D1
  • Transect Stop Number - 9
  • Transect Interval - 200.0
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9661326
  • NCSS Pedon Lab Data NASIS Record ID - 28027
  • Print Date: 2/17/2025

    • 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: 37.3029417
  • Std. Longitude: -91.3945389
  • Datum: WGS84
  • State: Missouri
  • County: MO203—Shannon
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO203—Shannon County, Missouri
  • 7.5 Minute USGS Quad: 37091-C4—Round Spring, Missouri

    • PEDON

  • Describers Name: LT, BM, MS
  • Current Taxonomic Class: Loamy-skeletal over clayey, siliceous, subactive, mesic Typic Paleudults
  • Current Taxon Kind: taxadjunct
  • 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 - 66 to 100 cm.
  • Classificaton Date - 4/1/2011
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - udic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Poynor
  • Taxonomic Class - Loamy-skeletal over clayey, siliceous, semiactive, mesic Typic Paleudults
  • Taxon Kind - series
  • PSC - 66 to 100 cm.
  • Classificaton Date - 9/10/1996
  • Moisture Class - udic
  • Moisture SUBClass - typic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 3
  • Field Measured Properties: 32 percent of Percent clay in the control section and 65 percent of Percent clay in the control section and 55 Percent rock fragments in the control section (vol) and 10 Percent rock fragments in the control section (vol) and 29 Strongly contrasting textural stratification (depth in inches)


    • SITE

  • Parent Material: residuum weathered from dolomite and/or slope alluvium
  • Landscape: hills
  • Landform: hill
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: shoulder
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Bedrock: dolomite (dolostone)
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/10/1996 (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

    strongly contrasting particle size class

    5—66

    66—208

    79—

    —-

    —-

    —-
    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

    5

    —

    —

    335

    —

    140

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 5 centimeters (0.0 to 2.0 inches); slightly decomposed plant material; fragments.
    A—5 to 25 centimeters (2.0 to 9.8 inches); dark grayish brown (10YR 4/2) very gravelly silt loam; weak fine granular structure; very friable; 7.0 fine to coarse roots; 7.0 fine interstitial and tubular pores; 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 35 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.7, hellige-truog. Lab sample # MU020420
    E—25 to 38 centimeters (9.8 to 15.0 inches); brown (10YR 5/3) gravelly silt loam; weak fine granular structure; very friable; 3.0 fine to coarse roots; 7.0 fine to coarse tubular pores; 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 10 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.5, hellige-truog; clear smooth boundary. Lab sample # MU020421
    BE—38 to 66 centimeters (15.0 to 26.0 inches); yellowish brown (10YR 5/4) extremely gravelly loam; weak fine subangular blocky structure; friable; 3.0 fine to coarse roots; 7.0 fine to coarse tubular pores; 15 percent distinct yellowish brown (10YR 5/6), moist, clay films on faces of peds; 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 25 percent by volume 2-39-75 millimeter sandstone, unspecified fragments and 30 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.6, hellige-truog; clear wavy boundary. Lab sample # MU020422
    Bt1—66 to 79 centimeters (26.0 to 31.1 inches); yellowish red (5YR 5/6) very gravelly clay loam; weak fine subangular blocky structure; friable; 3.0 fine and medium roots and 0.9 coarse roots; 3.0 fine to coarse tubular and 7.0 fine tubular pores; 15 percent distinct yellowish red (5YR 5/6), moist, clay films on faces of peds and 35 percent distinct strong brown (7.5YR 5/6), moist, clay films on rock fragments and 35 percent prominent very pale brown (10YR 7/4), moist, silt coats on rock fragments and 75 percent prominent light gray (10YR 7/2), moist, silt coats on rock fragments; 5 percent by volume nonflat indurated 75-162-250 millimeter chert fragments and 10 percent by volume nonflat indurated 250-425-600 millimeter chert fragments and 40 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU020423
    2Bt2—79 to 96 centimeters (31.1 to 37.8 inches); red (2.5YR 4/6) clay; moderate medium subangular blocky structure; firm; 3.0 fine and medium roots; 3.0 medium tubular and 7.0 fine tubular pores; 15 percent distinct dark reddish brown (2.5YR 3/4), moist, clay films on faces of peds and 15 percent distinct brown (7.5YR 4/4), moist, clay films on faces of peds and 35 percent distinct yellowish red (5YR 5/6), moist, clay films on faces of peds and 35 percent distinct light brown (7.5YR 6/4), moist, silt coats on faces of peds; 10 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.5, hellige-truog; clear wavy boundary. Lab sample # MU020424
    2Bt3—96 to 127 centimeters (37.8 to 50.0 inches); red (2.5YR 4/6) clay; 35 percent light gray (10YR 7/2) fine prominent mottles; moderate medium subangular blocky structure; very firm; 0.9 medium roots and 3.0 fine roots; 0.9 medium tubular and 3.0 fine tubular pores; 15 percent distinct grayish brown (10YR 5/2), moist, clay films on faces of peds and 15 percent distinct brown (7.5YR 4/4), moist, clay films on faces of peds and 15 percent distinct dark reddish brown (2.5YR 3/4), moist, clay films on faces of peds and 35 percent distinct brown (7.5YR 5/4), moist, clay films on faces of peds; 5 percent by volume 2-39-75 millimeter sandstone, unspecified fragments and 5 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.5, hellige-truog; gradual wavy boundary. Lab sample # MU020425
    2Bt4—127 to 157 centimeters (50.0 to 61.8 inches); red (2.5YR 4/6) clay; strong medium subangular blocky structure; very firm; 0.9 fine and medium roots; 0.9 fine and medium tubular pores; 15 percent distinct strong brown (7.5YR 5/6), moist, clay films on faces of peds and 15 percent distinct yellowish brown (10YR 5/6), moist, clay films on faces of peds and 15 percent prominent very pale brown (10YR 7/3), moist, silt coats in root channels and/or pores and 15 percent prominent reddish brown (2.5YR 4/4), moist, clay films on faces of peds and 35 percent distinct gray (10YR 5/1), moist, clay films on faces of peds; 1 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; extremely acid, pH 4.3, hellige-truog; clear wavy boundary. Lab sample # MU020426
    2Bt5—157 to 178 centimeters (61.8 to 70.1 inches); red (2.5YR 4/6) clay; 35 percent strong brown (7.5YR 5/6) fine distinct mottles; strong medium subangular blocky structure; very firm; 0.9 fine roots; 0.9 fine tubular pores; 15 percent distinct strong brown (7.5YR 4/6), moist, clay films on faces of peds and 15 percent prominent light gray (10YR 7/2), moist, silt coats in root channels and/or pores and 15 percent distinct brown (7.5YR 5/4), moist, clay films on faces of peds and 15 percent distinct strong brown (7.5YR 4/6), moist, nonintersecting slickensides on faces of peds and 35 percent prominent gray (10YR 5/1), moist, clay films on faces of peds; 3 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; extremely acid, pH 4.3, hellige-truog; clear wavy boundary. Lab sample # MU020427
    2Bt6—178 to 208 centimeters (70.1 to 81.9 inches); clay; fragments; extremely acid, pH 4.4, hellige-truog. Lab sample # MU020428. pH of 4.5 with a Hellige-Truog kit.