IDENTIFIERS

  • Current Taxon Name (Soil Name): Union
  • OSD
  • Series Extent
  • User Site ID: 1997MO131005M
  • User Pedon ID: 1997MO131005
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9713104
  • Print Date: 11/21/2024

    • 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: 38.2328278
  • Std. Longitude: -92.5268472
  • Datum: WGS84
  • Township: T40N
  • Range: R14W
  • Section: 7
  • PLSS Details: 1975 feet N and 200 feet E of the SW corner
  • Location Description: 1975' N. and 200' E. of the SW cor. 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
  • 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 - 20 to 70 cm.
  • Classificaton Date - 11/15/2012
  • 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 - 1/7/1997
  • 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: ridge
  • 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 formation of the Ordovician group.
  • Surface Fragments:
  • Benchmark Soil?: yes

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/7/1997 (actual site observation date)
  • Air Photo ID: 8A
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - hayland
  • 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

    71 - 107

    - 36 -

    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

    lithologic discontinuity

    fragipan

    lithologic discontinuity

    0—20

    20—203

    56—107

    71—107

    71—107

    107—203

    —20—

    —183—

    —51—

    —36—

    —36—

    —96—
    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

    2

    —

    —

    256

    —

    240

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 20 centimeters (0.0 to 7.9 inches); dark grayish brown (10YR 4/2), light brownish gray (10YR 6/2), dry; silt loam; moderate fine granular structure; friable; many (15.0) very fine roots throughout and many (15.0) fine roots throughout; many (20.0) very fine tubular and many (20.0) very fine interstitial and many (20.0) fine tubular and many (20.0) fine interstitial pores; fragments; neutral, pH 7.0, hellige-truog; clear smooth boundary. Lab sample # MU058263
    Bt1—20 to 38 centimeters (7.9 to 15.0 inches); strong brown (7.5YR 4/6) silt loam; moderate medium subangular blocky, and moderate fine subangular blocky structure; friable; common (4.9) very fine roots throughout and common (4.9) fine roots throughout; many (15.0) very fine tubular and many (15.0) very fine interstitial and many (15.0) fine tubular and many (15.0) fine interstitial pores; 5 percent faint strong brown (7.5YR 4/6), moist, clay films on faces of peds; fragments; neutral, pH 7.1, hellige-truog; gradual smooth boundary. Lab sample # MU058264. discontinuous - phpvsfiid 126748; discontinuous - phpvsfiid 126748
    Bt2—38 to 56 centimeters (15.0 to 22.0 inches); brown (7.5YR 4/4) silty clay loam; moderate fine subangular blocky, and moderate medium subangular blocky structure; firm; common (4.9) very fine roots throughout and common (4.9) fine roots throughout; many (10.0) fine tubular and many (10.0) fine tubular and many (10.0) fine tubular and many (10.0) fine tubular pores; 10 percent faint dark brown (7.5YR 3/4), moist, clay films on faces of peds; fragments; neutral, pH 6.6, hellige-truog; gradual smooth boundary. Lab sample # MU058265. discontinuous - phpvsfiid 126749; discontinuous - phpvsfiid 126749
    Bt3—56 to 71 centimeters (22.0 to 28.0 inches); yellowish brown (10YR 5/4) silty clay loam; moderate fine and medium subangular blocky structure; firm; common (4.9) very fine roots throughout and common (4.9) fine roots throughout; many (10.0) very fine tubular and many (10.0) very fine interstitial and many (10.0) fine interstitial and many (10.0) fine tubular pores; 25 percent distinct brown (7.5YR 4/4), moist, clay films on faces of peds; 5 percent fine irregular dark grayish brown (10YR 4/2), moist, iron depletions throughout and 10 percent fine irregular strong brown (7.5YR 4/6), moist, masses of oxidized iron throughout; 5 percent by volume subangular indurated 2-39-75 millimeter limestone, cherty fragments; strongly acid, pH 5.3, hellige-truog; clear smooth boundary. Lab sample # MU058266. Roots are concentrated at base of horizon.; discontinuous - phpvsfiid 126750; discontinuous - phpvsfiid 126750
    2Btx—71 to 107 centimeters (28.0 to 42.1 inches); 75 percent dark grayish brown (10YR 4/2) and 25 percent strong brown (10YR 5/6) extremely gravelly silty clay loam; strong very coarse prismatic parts to weak fine subangular blocky, and strong coarse prismatic parts to weak fine subangular blocky structure; very firm; brittle; few (0.8) very fine roots in cracks and few (0.8) fine roots in cracks; many (10.0) very fine tubular and many (10.0) very fine vesicular pores; 10 percent prominent grayish brown (10YR 5/2), moist, clay films on horizontal faces of peds; 10 percent by volume subangular indurated 75-162-250 millimeter limestone, cherty fragments and 60 percent by volume subangular indurated 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog; gradual smooth boundary. Lab sample # MU058267. Upper 2 inches of horizon is a gray zone with weak fine and medium platy structure. Vertical and diagonal gray seams between primary peds are 18 to 24 inches apart. 60 percent brittleness in matrix of peds.; discontinuous - phpvsfiid 126751; discontinuous - phpvsfiid 126751
    3Bt1—107 to 135 centimeters (42.1 to 53.1 inches); 80 percent dark reddish brown (5YR 3/4) and 20 percent red (2.5YR 4/8) very gravelly clay; moderate fine subangular blocky structure; very firm; common (4.9) very fine interstitial and common (4.9) fine tubular pores; 25 percent distinct dark red (2.5YR 3/6), moist, clay films on faces of peds; 10 percent by volume subangular indurated 75-162-250 millimeter limestone, cherty fragments and 40 percent by volume subangular indurated 2-39-75 millimeter limestone, cherty fragments; moderately acid, pH 5.9, hellige-truog; gradual smooth boundary. Lab sample # MU058268. discontinuous - phpvsfiid 126752; discontinuous - phpvsfiid 126752
    3Bt2—135 to 168 centimeters (53.1 to 66.1 inches); dark red (2.5YR 3/6) extremely gravelly clay; moderate fine subangular blocky structure; very firm; common (4.9) very fine interstitial and common (4.9) very fine tubular pores; 25 percent distinct red (2.5YR 4/6), moist, clay films on faces of peds; 15 percent by volume subangular indurated 75-162-250 millimeter limestone, cherty fragments and 60 percent by volume subangular indurated 2-39-75 millimeter limestone, cherty fragments; slightly acid, pH 6.3, hellige-truog; gradual smooth boundary. Lab sample # MU058269. discontinuous - phpvsfiid 126753; discontinuous - phpvsfiid 126753
    3Bt3—168 to 203 centimeters (66.1 to 79.9 inches); dark red (2.5YR 3/6) very gravelly clay; moderate fine subangular blocky structure; very firm; common (4.9) very fine interstitial and common (4.9) very fine tubular pores; 30 percent distinct red (2.5YR 4/6) clay films on faces of peds; 10 percent by volume subangular 75-162-250 millimeter limestone, cherty fragments and 25 percent by volume subangular indurated 2-39-75 millimeter limestone, cherty fragments; slightly acid, pH 6.2, hellige-truog. Lab sample # MU058270. discontinuous - phpvsfiid 126754; discontinuous - phpvsfiid 126754