IDENTIFIERS

  • Current Taxon Name (Soil Name): Union
  • OSD
  • Series Extent
  • User Site ID: 2000MO055015M
  • User Pedon ID: 2000MO055015
  • Transect:
  • User Transect ID - 003t
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M0005515
  • 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: 38.1770083
  • Std. Longitude: -91.3001500
  • Datum: WGS84
  • Township: T40N
  • Range: R3W
  • Section: 30
  • PLSS Details: 1050 feet S and 2050 feet W of the NE corner
  • Location Description: 1050 feet South and 2050 feet West of the Northeast corner of sec. 30 T.40 N.-R.3 W.
  • State: Missouri
  • County: MO055—Crawford
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO055—Crawford County, Missouri
  • 7.5 Minute USGS Quad: 38091-B3—Argo, Missouri

    • PEDON

  • Describers Name: JF, SL
  • Current Taxonomic Class: Fine, mixed, active, mesic Oxyaquic Fragiudalfs
  • 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 - Union
  • PSC - 15 to 51 cm.
  • Classificaton Date - 12/11/2012
  • Classifier - J.R. Perkins
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Union
  • Taxonomic Class - Fine, mixed Oxyaquic Fragiudalfs
  • Taxon Kind - series
  • PSC - 15 to 51 cm.
  • Classificaton Date - 4/5/2000
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified


    • SITE

  • Parent Material: loess over pedisediment derived from cherty limestone over residuum weathered from dolomite over residuum weathered from shale
  • 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: Pennslyvanian Undifferentiated formation of the Pennslyvanian Undifferentiated group.
  • Surface Fragments:
  • Benchmark Soil?: yes

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/5/2000 (actual site observation date)
  • Air Photo ID: E-1
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - pastureland, tame
  • 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

    fragipan

    noncoherent

    51 - 84

    - 33 -

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

    ochric epipedon

    argillic horizon

    fragipan

    lithologic discontinuity

    redox depletions with chroma 2 or less

    lithologic discontinuity

    lithologic discontinuity

    0—15

    15—203

    51—84

    51—84

    51—84

    84—135

    135—203

    —15—

    —188—

    —33—

    —33—

    —33—

    —51—

    —68—
    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

    3

    —

    —

    286.5

    —

    335

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 15 centimeters (0.0 to 5.9 inches); brown (10YR 5/3), light brownish gray (10YR 6/2), dry; silt loam; 21 percent clay; moderate fine subangular blocky structure; friable; many (6.0) very fine roots and many (6.0) fine roots; common (3.0) tubular and common (3.0) interstitial pores; fragments; very strongly acid, pH 4.8, pH meter; clear smooth boundary. Lab sample # MU021406
    Bt1—15 to 33 centimeters (5.9 to 13.0 inches); 95 percent brown (7.5YR 4/4) and 5 percent brown (10YR 5/3) silty clay loam; 40 percent clay; moderate medium subangular blocky structure; friable; common (3.0) very fine roots and common (3.0) fine roots; common (3.0) interstitial and common (3.0) tubular pores; 15 percent faint clay films on faces of peds; fragments; very strongly acid, pH 4.8, pH meter; clear smooth boundary. Lab sample # MU021407. discontinuous - phpvsfiid 139338; discontinuous - phpvsfiid 139338
    Bt2—33 to 51 centimeters (13.0 to 20.1 inches); 80 percent strong brown (7.5YR 4/6) and 20 percent brown (10YR 5/3) clay loam; 29 percent clay; moderate medium subangular blocky structure; friable; common (3.0) very fine roots and common (3.0) fine roots; common (3.0) interstitial and common (3.0) tubular pores; 15 percent faint clay films on faces of peds; fragments; very strongly acid, pH 4.8, pH meter; gradual smooth boundary. Lab sample # MU021408. discontinuous - phpvsfiid 139339; discontinuous - phpvsfiid 139339
    2Btx1—51 to 61 centimeters (20.1 to 24.0 inches); 75 percent brown (10YR 5/3) and 20 percent grayish brown (10YR 5/2) and 5 percent yellowish red (5YR 4/6) loam; 15 percent clay; weak coarse prismatic parts to moderate fine prismatic structure; very firm; brittle; few (0.1) fine roots; few (0.1) tubular and few (0.1) interstitial pores; 15 percent faint clay films on faces of peds; 5 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, pH meter; clear wavy boundary. Lab sample # MU021409. 3 to 5 inches between seams. 40 percent brittle; discontinuous - phpvsfiid 139340; discontinuous - phpvsfiid 139340
    2Btx2—61 to 84 centimeters (24.0 to 33.1 inches); 60 percent yellowish brown (10YR 5/4) and 40 percent light brownish gray (10YR 6/2) extremely gravelly sandy loam; 11 percent clay; weak very coarse prismatic structure; very firm; brittle; 15 percent prominent clay films on vertical faces of peds and 35 percent silt coats; 5 percent by volume nonflat indurated 75-162-250 millimeter limestone, cherty fragments and 5 percent by volume nonflat indurated 2-39-75 millimeter sandstone, unspecified fragments and 65 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, pH meter; clear wavy boundary. Lab sample # MU021410. 10 to 15 inches between seams. 80 percent brittle.; continuous - phpvsfiid 139341; continuous - phpvsfiid 139341
    3Bt1—84 to 114 centimeters (33.1 to 44.9 inches); 50 percent yellowish brown (10YR 5/4) and 30 percent yellowish brown (10YR 5/8) and 20 percent dark red (2.5YR 3/6) gravelly clay; 50 percent clay; moderate medium prismatic parts to strong fine angular blocky structure; firm; few (0.1) interstitial pores; 60 percent prominent clay films on faces of peds; 15 percent by volume nonflat indurated 2-39-75 millimeter sandstone, unspecified fragments; very strongly acid, pH 4.8, pH meter; clear wavy boundary. Lab sample # MU021411. continuous - phpvsfiid 139343; continuous - phpvsfiid 139343
    3Bt2—114 to 135 centimeters (44.9 to 53.1 inches); 35 percent strong brown (7.5YR 5/6) and 35 percent dark red (2.5YR 3/6) and 20 percent light brownish gray (10YR 6/2) and 10 percent yellowish brown (10YR 5/8) gravelly clay; 53 percent clay; strong coarse prismatic parts to strong fine angular blocky structure; very firm; 60 percent prominent clay films on faces of peds; 5 percent by volume nonflat indurated 75-162-250 millimeter sandstone, unspecified fragments and 5 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments and 10 percent by volume nonflat indurated 2-39-75 millimeter sandstone, unspecified fragments; very strongly acid, pH 5.0, pH meter; gradual wavy boundary. Lab sample # MU021412. continuous - phpvsfiid 139344; continuous - phpvsfiid 139344
    4Bt3—135 to 170 centimeters (53.1 to 66.9 inches); 30 percent strong brown (7.5YR 5/8) and 30 percent light gray (10YR 7/1) and 20 percent light brownish gray (10YR 6/2) and 20 percent dark red (2.5YR 3/6) very gravelly clay; 71 percent clay; strong coarse prismatic parts to strong medium angular blocky structure; very firm; 80 percent prominent clay films on faces of peds; 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 4.9, pH meter; gradual wavy boundary. Lab sample # MU021413. continuous - phpvsfiid 139345; continuous - phpvsfiid 139345
    4Bt4—170 to 203 centimeters (66.9 to 79.9 inches); 60 percent light gray (10YR 7/1) and 30 percent light brownish gray (10YR 6/2) and 10 percent dark red (2.5YR 3/6) very gravelly clay; 46 percent clay; strong coarse prismatic parts to strong medium angular blocky structure; very firm; 80 percent prominent clay films on faces of peds; 40 percent by volume nonflat indurated 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.2. Lab sample # MU021414. continuous - phpvsfiid 139346; continuous - phpvsfiid 139346