IDENTIFIERS

  • Current Taxon Name (Soil Name): Union
  • OSD
  • Series Extent
  • User Site ID: 1987MO161022M
  • User Pedon ID: 1987MO161022
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M8716122
  • Print Date: 2/16/2025

    • 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: 38.0920778
  • Std. Longitude: -91.6077250
  • Datum: WGS84
  • Township: T39N
  • Range: R6W
  • Section: 20
  • PLSS Details: 700 feet S and 2500 feet W of the NE corner
  • Location Description: 700 ft. south and 2,500 ft. west of the northeast corner of sec. 20, T. 39 N, R. 6 W.
  • State: Missouri
  • County: MO161—Phelps
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO161—Phelps County, Missouri
  • 7.5 Minute USGS Quad: 38091-A5—Rosati, Missouri

    • PEDON

  • Current Taxonomic Class: Fine, mixed, superactive, mesic Oxyaquic Fragiudalfs
  • Current Taxon Kind: taxadjunct
  • Pedon Type: representative pedon for component
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Union
  • PSC - 20 to 56 cm.
  • Classificaton Date - 12/3/2012
  • Classifier - J.R. Perkins
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Lebanon
  • Taxonomic Class - Fine, mixed, active, mesic Typic Fragiudults
  • Taxon Kind - series
  • PSC - 20 to 56 cm.
  • Classificaton Date - 7/14/1987
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified


    • SITE

  • Parent Material: loess over pedisediment over residuum
  • Landscape: hills
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Position: middle third
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Drainage Class: moderately well
  • Geology: Pennslyvian Undifferentiated formation of the Pennsylvanian Undifferentiated group.
  • Surface Fragments:
  • Benchmark Soil?: yes

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/14/1987 (actual site observation date)
  • Air Photo ID: E-2
  • 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
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    abrupt textural change

    fragipan

    noncoherent

    noncoherent

    20 - 20

    56 - 145

    - 0 -

    - 89 -

    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    albic horizon

    argillic horizon

    abrupt textural change

    redox depletions with chroma 2 or less

    fragipan

    lithologic discontinuity

    lithologic discontinuity

    0—8

    8—20

    20—170

    20—20

    46—145

    56—145

    56—145

    145—170

    —8—

    —12—

    —150—

    —0—

    —99—

    —89—

    —89—

    —25—
    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

    4

    —

    —

    305

    —

    70

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 8 centimeters (0.0 to 3.1 inches); brown (10YR 4/3), pale brown (10YR 6/3), dry; silt loam; 17 percent clay; weak very fine granular structure; very friable; many (5.0) very fine roots; fragments; strongly acid, pH 5.3, hellige-truog; clear smooth boundary. Lab sample # MU031969
    E—8 to 20 centimeters (3.1 to 7.9 inches); yellowish brown (10YR 5/4) silt loam; 15 percent clay; weak very fine granular structure; very friable; common (3.0) very fine roots; fragments; very strongly acid, pH 4.6, hellige-truog; clear smooth boundary. Lab sample # MU031970
    Bt1—20 to 46 centimeters (7.9 to 18.1 inches); brown (7.5YR 4/4) silty clay; 42 percent clay; strong very fine subangular blocky structure; firm; common (2.0) fine roots and common (1.0) coarse roots; 60 percent prominent clay films on faces of peds; fragments; very strongly acid, pH 4.6, hellige-truog; clear smooth boundary. Lab sample # MU031971
    Bt2—46 to 56 centimeters (18.1 to 22.0 inches); brown (7.5YR 4/4) silty clay; 42 percent clay; strong very fine subangular blocky structure; firm; common (2.0) fine roots and common (1.0) coarse roots; 60 percent prominent clay films on faces of peds; 1 percent medium masses of oxidized iron and 10 percent medium grayish brown (10YR 5/2), moist, iron depletions; fragments; very strongly acid, pH 4.6, hellige-truog; clear smooth boundary. Lab sample # MU031971
    2Btx1—56 to 117 centimeters (22.0 to 46.1 inches); yellowish brown (10YR 5/4) extremely gravelly silt loam; 11 percent clay; moderate very coarse prismatic structure; very firm; brittle; skeletans over cutans and 15 percent faint clay films on faces of peds; 20 percent coarse distinct noncoherent cemented light brownish gray (10YR 6/2), moist, iron depletions on vertical faces of peds; 80 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 # MU031972. Prizms are greater than 4 inches across. Gray seams are 10YR 6/2. 80 percent brittle.
    2Btx2—117 to 145 centimeters (46.1 to 57.1 inches); strong brown (7.5YR 5/6) extremely gravelly silt loam; 21 percent clay; moderate very coarse prismatic parts to weak very fine subangular blocky structure; very firm; brittle; skeletans over cutans and 35 percent prominent clay films on faces of peds; 20 percent coarse distinct noncoherent cemented light gray (10YR 7/2), moist, iron depletions on vertical faces of peds; 80 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 # MU031973. Prizms are greater than 4 inches across. Gray seams are 10YR 7/2. 80 percent brittle.
    3Bt—145 to 170 centimeters (57.1 to 66.9 inches); red (2.5YR 4/6) clay; 48 percent clay; strong very fine subangular blocky structure; firm; 60 percent prominent clay films on faces of peds; 10 percent medium strong brown (7.5YR 5/6), moist, masses of oxidized iron; 10 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.4, hellige-truog. Lab sample # MU031974