IDENTIFIERS

  • Current Taxon Name (Soil Name): Plato
  • OSD
  • Series Extent
  • User Site ID: 1994MO125036M
  • User Pedon ID: 1994MO125036
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9412536
  • 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: 38.1743056
  • Std. Longitude: -91.6977778
  • Datum: WGS84
  • Township: T40N
  • Range: R7W
  • Section: 27
  • PLSS Details: 700 feet E and 1900 feet N of the SW corner
  • Location Description: of Sec. 27, T. 40 N., R. 7 W.
  • State: Missouri
  • County: MO125—Maries
  • MLRA: 116A—Ozark Highland

    • PEDON

  • Describers Name: Keith Davis Brad Berhorst Wyn Kelley
  • Current Taxonomic Class: Fine, mixed Aquic Fragiudalfs
  • Pedon Type: representative pedon for component
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Plato
  • Taxonomic Class - Fine, mixed Aquic Fragiudalfs
  • Taxon Kind - series
  • PSC - 10 to 60 cm.
  • Classificaton Date - 12/7/1994
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess and/or residuum weathered from sedimentary rock
  • Landscape: plateau
  • Landform: ridge
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: somewhat poorly
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 12/7/1994 (actual site observation date)
  • Air Photo ID: 10C
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    fragipan

    0—10

    10—203

    64—130

    —-

    —-

    —-
    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

    15

    0

    325

    —

    260

    991

    —

    —

    12.8

    —

    —

    13.9

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 10 centimeters (0.0 to 3.9 inches); dark grayish brown (10YR 4/2) interior silt loam; moderate fine granular structure; very friable; 10.0 very fine and fine roots throughout and 3.0 medium and coarse roots throughout; 4.0 very fine moderate-continuity vesicular and 0.8 fine moderate-continuity vesicular pores; 7 percent fine spherical very strongly coherent cemented dark reddish brown (5YR 2/2) iron-manganese concretions throughout; fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU050777
    Bt1—10 to 20 centimeters (3.9 to 7.9 inches); yellowish brown (10YR 5/6) interior silty clay loam; weak fine subangular blocky structure; friable; 6.0 very fine to medium roots between peds and 0.8 coarse roots between peds; 0.8 very fine moderate-continuity vesicular pores; 70 percent distinct clay films on faces of peds; 5 percent fine spherical very strongly coherent cemented dark reddish brown (5YR 2/2) iron-manganese concretions between peds; fragments; very strongly acid, pH 4.7, hellige-truog; clear smooth boundary. Lab sample # MU050778. continuous - phpvsfiid 145093; continuous - phpvsfiid 145093
    Bt2—20 to 38 centimeters (7.9 to 15.0 inches); 85 percent yellowish brown (10YR 5/6) interior silty clay; 5 percent brown (10YR 5/3) fine prominent irregular and 10 percent brown (7.5YR 4/4) medium prominent irregular mottles; moderate fine subangular blocky structure; firm; 3.0 very fine to medium roots between peds and 0.8 coarse roots between peds; 0.8 very fine low-continuity vesicular pores; 20 percent prominent clay films on faces of peds and 40 percent distinct clay films on faces of peds; 2 percent fine spherical very strongly coherent cemented dark reddish brown (5YR 2/2) iron-manganese concretions between peds; fragments; very strongly acid, pH 4.6, hellige-truog; clear smooth boundary. Lab sample # MU050779. discontinuous - phpvsfiid 145095; continuous - phpvsfiid 145094; discontinuous - phpvsfiid 145095; continuous - phpvsfiid 145094
    Bt3—38 to 64 centimeters (15.0 to 25.2 inches); 60 percent grayish brown (10YR 5/2) interior silty clay; 30 percent yellowish brown (10YR 5/6) fine prominent irregular mottles; moderate fine subangular blocky structure; firm; 3.0 very fine and fine roots between peds; 0.8 very fine low-continuity vesicular pores; 60 percent distinct clay films on faces of peds; 2 percent fine spherical very strongly coherent cemented dark reddish brown (5YR 2/2) iron-manganese concretions between peds; fragments; very strongly acid, pH 4.5, hellige-truog; clear wavy boundary. Lab sample # MU050780. Few sand grains evident on ped faces.; continuous - phpvsfiid 145096; continuous - phpvsfiid 145096
    2Btx1—64 to 102 centimeters (25.2 to 40.2 inches); 50 percent yellowish brown (10YR 5/4) interior and 30 percent grayish brown (10YR 5/2) interior silt loam; 20 percent yellowish brown (10YR 5/6) medium distinct irregular mottles; strong coarse prismatic structure; extremely firm*; 0.8 very fine roots between peds and 0.8 medium roots top of horizon; 3.0 very fine low-continuity vesicular pores; 50 percent faint clay films on faces of peds; 2 percent fine irregular extremely weakly coherent cemented dark reddish brown (5YR 2/2) iron-manganese concretions between peds; fragments; very strongly acid, pH 4.6, hellige-truog; clear wavy boundary. Lab sample # MU050781. Common sand grains evident on ped faces. Water seeped in the pit on top of this layer. Vertical (10YR 5/2) gray streaks average 10" apart. Few chert pebbles.; continuous - phpvsfiid 145097; continuous - phpvsfiid 145097
    2Btx2—102 to 130 centimeters (40.2 to 51.2 inches); 50 percent yellowish brown (10YR 5/4) interior and 45 percent grayish brown (10YR 5/2) interior extremely gravelly silt loam; 1 percent yellowish brown (10YR 5/6) fine distinct irregular and 4 percent dark yellowish brown (10YR 4/4) fine faint irregular mottles; massive; extremely firm*; 0.6 very fine roots between peds; 0.5 very fine low-continuity vesicular pores; 30 percent faint clay films on faces of peds; 3 percent fine irregular very strongly coherent cemented dark reddish brown (5YR 2/2) iron-manganese concretions between peds; 30 percent by volume subrounded 2-39-75 millimeter unspecified fragments and 50 percent by volume angular 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # MU050782. All gravels are chert.; discontinuous - phpvsfiid 145098; discontinuous - phpvsfiid 145098
    3Bt4—130 to 152 centimeters (51.2 to 59.8 inches); 35 percent yellowish brown (10YR 5/4) interior and 35 percent dark yellowish brown (10YR 4/4) interior silty clay; 5 percent red (2.5YR 4/6) fine prominent irregular and 25 percent yellowish brown (10YR 5/6) fine distinct irregular mottles; weak fine prismatic parts to weak very fine angular blocky structure; firm; 0.6 very fine roots between peds; 0.2 very fine low-continuity vesicular and 0.4 very fine low-continuity vesicular pores; 70 percent distinct clay films on faces of peds; 1 percent fine irregular noncoherent cemented dark reddish brown (5YR 2/2) iron-manganese concretions between peds; 5 percent by volume angular 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; gradual wavy boundary. Lab sample # MU050783. All gravels are chert.; continuous - phpvsfiid 145099; continuous - phpvsfiid 145099
    3Bt5—152 to 173 centimeters (59.8 to 68.1 inches); 80 percent yellowish brown (10YR 5/6) interior gravelly clay; 1 percent gray (10YR 5/1) fine prominent irregular and 1 percent red (2.5YR 4/6) fine prominent irregular and 18 percent dark yellowish brown (10YR 4/4) medium distinct irregular mottles; moderate fine prismatic parts to weak fine angular blocky structure; firm; 0.6 very fine roots between peds; 10 percent prominent dark brown (10YR 3/3), moist, clay films in root channels and/or pores and 20 percent distinct clay films on faces of peds; 5 percent by volume subrounded 2-39-75 millimeter unspecified fragments and 10 percent by volume angular 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.3, hellige-truog; clear wavy boundary. Lab sample # MU050784. All gravels are chert.; discontinuous - phpvsfiid 145101; continuous - phpvsfiid 145100; discontinuous - phpvsfiid 145101; continuous - phpvsfiid 145100
    3Bt6—173 to 203 centimeters (68.1 to 79.9 inches); 55 percent strong brown (7.5YR 5/6) interior clay; 5 percent red (2.5YR 4/6) fine prominent irregular and 10 percent brownish yellow (10YR 6/8) medium prominent irregular and 30 percent gray (10YR 5/1) medium prominent irregular mottles; moderate fine prismatic parts to weak fine angular blocky structure; firm; 0.6 very fine roots between peds; 20 percent prominent clay films in root channels and/or pores and 30 percent distinct clay films on faces of peds; 10 percent by volume angular 2-39-75 millimeter unspecified fragments; strongly acid, pH 5.2, hellige-truog. Lab sample # MU050785. All gravels are chert.; discontinuous - phpvsfiid 145103; continuous - phpvsfiid 145102; discontinuous - phpvsfiid 145103; continuous - phpvsfiid 145102