IDENTIFIERS

  • Current Taxon Name (Soil Name): Union
  • OSD
  • Series Extent
  • User Site ID: 1997MO131048M
  • User Pedon ID: 1997MO131048
  • Vegetation Plot ID: 1997MO131048
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9713119
  • 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: 38.2346611
  • Std. Longitude: -92.5187806
  • Datum: WGS84
  • Township: T40N
  • Range: R14W
  • Section: 7
  • PLSS Details: 2600 feet N and 2475 feet E of the SW corner
  • Location Description: 2600 feet north and 2475 feet east of the southwest corner of Sec. 7, T. 40 N., R. 14 W.
  • State: Missouri
  • County: MO131—Miller
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO131—Miller County, Missouri
  • 7.5 Minute USGS Quad: 38092-B5—Bagnell, Missouri

    • PEDON

  • Describers Name: DEV, DWW
  • Current Taxonomic Class: Fine, mixed, active, mesic Oxyaquic Fragiudalfs
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Union
  • PSC - 20 to 70 cm.
  • Classificaton Date - 11/13/2012
  • Classifier - J.R. Perkins
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Union
  • Taxonomic Class - Fine-silty, mixed Oxyaquic Fragiudalfs
  • Taxon Kind - series
  • PSC - 20 to 70 cm.
  • Classificaton Date - 4/23/1997
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified


    • SITE

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

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/23/1997 (actual site observation date)
  • Air Photo ID: 8A
  • 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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    DIOSP

    LOAR10

    QUST

    RHUS

    SASSA

    THUJA

    Diospyros

    Lolium arundinaceum

    Quercus stellata

    Rhus

    Sassafras

    Thuja

    diospyros

    tall fescue

    post oak

    sumac

    sassafras

    arborvitae

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    fragipan

    noncoherent

    71 - 142

    - 71 -

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

    ochric epipedon

    argillic horizon

    redox depletions with chroma 2 or less

    fragipan

    lithologic discontinuity

    lithologic discontinuity

    0—20

    20—203

    61—203

    71—142

    71—142

    142—203

    —20—

    —183—

    —142—

    —71—

    —71—

    —61—
    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

    —

    —

    258

    —

    287

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 8 centimeters (0.0 to 3.1 inches); dark grayish brown (10YR 4/2), grayish brown (10YR 5/2), dry; silt; weak fine granular structure; friable; many (5.0) medium roots and many (5.0) fine roots; few (1.0) fine tubular and few (1.0) fine vesicular and tubular pores; fragments; moderately acid, pH 5.6, hellige-truog; clear smooth boundary. Lab sample # MU058329
    BE—8 to 20 centimeters (3.1 to 7.9 inches); 80 percent yellowish brown (10YR 5/4) and 20 percent dark grayish brown (10YR 4/2) silt; weak fine granular structure; friable; few (0.5) medium roots and common (4.0) fine roots; 0.5 fine tubular and 0.5 fine vesicular pores; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # MU058330
    Bt1—20 to 33 centimeters (7.9 to 13.0 inches); strong brown (7.5YR 5/6) silt loam; moderate fine subangular blocky structure; firm; few (0.5) medium roots and common (3.0) fine roots; few (0.5) fine vesicular and tubular and few (0.0) fine tubular pores; 5 percent faint brown (10YR 5/3), moist, silt coats on faces of peds and 10 percent distinct dark yellowish brown (10YR 4/4), moist, clay films on faces of peds; fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU058331. discontinuous - phpvsfiid 126853; patchy - phpvsfiid 126854; discontinuous - phpvsfiid 126853; patchy - phpvsfiid 126854
    Bt2—33 to 61 centimeters (13.0 to 24.0 inches); strong brown (7.5YR 4/6) silty clay loam; moderate fine subangular blocky structure; firm; common (2.0) medium roots and common (2.0) fine roots and 0.3 coarse roots; 0.5 fine tubular and 0.5 fine vesicular pores; 20 percent distinct brown (7.5YR 4/4), moist, clay films on faces of peds; fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU058332. discontinuous - phpvsfiid 126855; discontinuous - phpvsfiid 126855
    Bt3—61 to 71 centimeters (24.0 to 28.0 inches); yellowish brown (10YR 5/4) gravelly silty clay loam; moderate fine subangular blocky structure; firm; few (0.5) medium roots and common (2.0) fine roots; 0.5 fine tubular and 0.0 fine vesicular pores; 10 percent prominent gray (10YR 5/1), moist, clay films on faces of peds and 10 percent faint light gray (10YR 7/1), moist, silt coats on faces of peds and 20 percent distinct dark yellowish brown (10YR 4/4), moist, clay films on faces of peds; 10 percent grayish brown (10YR 5/2) iron depletions; 15 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.5, hellige-truog; gradual smooth boundary. Lab sample # MU058333. Roots oriented horizontally.; discontinuous - phpvsfiid 126856; discontinuous - phpvsfiid 126857; discontinuous - phpvsfiid 126858; discontinuous - phpvsfiid 126856; discontinuous - phpvsfiid 126857; discontinuous - phpvsfiid 126858
    2Btx1—71 to 117 centimeters (28.0 to 46.1 inches); light brownish gray (10YR 6/2) extremely gravelly silt loam; moderate very coarse prismatic parts to weak fine platy structure; very firm; brittle; few (0.1) very fine roots; common (2.0) very fine tubular and common (2.0) very fine vesicular and common (2.0) fine vesicular and common (2.0) fine tubular pores; 40 percent distinct light gray (10YR 7/1) silt coats throughout; 60 percent light brownish gray (10YR 6/2) clay depletions; 5 percent by volume subangular 75-162-250 millimeter limestone, cherty fragments and 75 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.9, hellige-truog; gradual smooth boundary. Lab sample # MU058334. 70 percent brittleness in primary structure. Roots in seams about 5 inches apart.; continuous - phpvsfiid 126859; continuous - phpvsfiid 126859
    2Btx2—117 to 142 centimeters (46.1 to 55.9 inches); yellowish brown (10YR 5/4) extremely gravelly silt loam; moderate very coarse prismatic structure; very firm; brittle; few (0.1) very fine roots; 0.8 very fine tubular and 0.8 very fine vesicular and 0.8 fine tubular and 0.8 fine vesicular pores; 20 percent distinct light brownish gray (10YR 6/2), moist, clay films on all faces of peds and 20 percent distinct light gray (10YR 7/1), moist, silt coats on rock fragments and 20 percent distinct light brownish gray (10YR 6/2), moist, clay films on surfaces along pores; 10 percent strong brown (7.5YR 5/6), moist, masses of oxidized iron and 40 percent light brownish gray (10YR 6/2), moist, clay depletions; 10 percent by volume subangular 75-162-250 millimeter limestone, cherty fragments and 60 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.4, hellige-truog; gradual wavy boundary. Lab sample # MU058335. 50 percent brittleness in primary structure. Roots in seams about 5 inches apart.; discontinuous - phpvsfiid 126861; discontinuous - phpvsfiid 126860; discontinuous - phpvsfiid 861509; discontinuous - phpvsfiid 126861; discontinuous - phpvsfiid 126860; discontinuous - phpvsfiid 861509
    3Bt—142 to 203 centimeters (55.9 to 79.9 inches); 60 percent dark reddish brown (5YR 3/4) and 40 percent dark red (2.5YR 3/6) gravelly clay; weak fine subangular blocky structure; firm; few (0.3) fine roots in cracks; 20 percent prominent gray (10YR 6/1), moist, clay films on vertical faces of peds and 30 percent distinct dark reddish brown (5YR 3/4), moist, clay films on faces of peds; 25 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; moderately acid, pH 5.6, hellige-truog. Lab sample # MU058336. Roots in clay seams.; discontinuous - phpvsfiid 126862; continuous - phpvsfiid 126863; discontinuous - phpvsfiid 126862; continuous - phpvsfiid 126863