IDENTIFIERS

  • Current Taxon Name (Soil Name): MEXICO
  • OSD
  • Series Extent
  • User Site ID: 2005MO007008
  • User Pedon ID: 2005MO007008
  • Transect:
  • User Transect ID - MexPut-24
  • Transect Stop Number - 2
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M0500708
  • NCSS Pedon Lab Data NASIS Record ID - 25820
  • Print Date: 2/17/2025

    • 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: 39.1475278
  • Std. Longitude: -91.7829167
  • Datum: WGS84
  • Township: T50N
  • Range: R8W
  • Section: 3
  • PLSS Details: 524 feet West and 524 feet South from the North East corner
  • Country: US—United States
  • State: Missouri
  • County: MO007—Audrain
  • MLRA: 113—Central Claypan Areas
  • Non-MLRA Soil Survey Area: MO007—Audrain County, Missouri
  • 7.5 Minute USGS Quad: 39091-B7—Mexico East, Missouri

    • PEDON

  • Describers Name: John Horton, Grant Butler
  • Current Taxonomic Class: Fine, smectitic, mesic Vertic Epiaqualfs
  • Current Taxon Kind: series
  • Pedon Type: within range of map unit
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Missouri Pedon
  • Pedon #: 8
  • Correlated Information:
  • Soil Name - MEXICO
  • PSC - 23 to 74 cm.
  • Classificaton Date - 2/1/2012
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - aquic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - MEXICO
  • Classificaton Date - 11/21/2005
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: silty and clayey loess derived from mixed over silty and clayey pedisediment derived from igneous, metamorphic and sedimentary rock
  • Landscape: till plain
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: upper third
  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Runoff: very high
  • Drainage Class: poorly
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Holocene Stage formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/21/2005 (actual site observation date)
  • Air Photo ID: 39091b7se
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion sheet
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    reduced matrix

    aquic conditions

    lithologic discontinuity

    0—23

    23—203

    23—203

    23—203

    71—

    —23—

    —180—

    —180—

    —180—

    —1—
    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

    1

    —

    —

    247.5

    —

    180

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 23 centimeters (0.0 to 9.1 inches); very dark grayish brown (10YR 3/2) interior, grayish brown (10YR 5/2) interior, dry; silt loam; weak fine subangular blocky, and weak medium subangular blocky structure; friable; 3.0 very fine roots throughout and 3.0 fine roots throughout; 3.0 very fine tubular pores; 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary. Lab sample # MU005165; observed in push tube
    Btg1—23 to 30 centimeters (9.1 to 11.8 inches); 70 percent dark grayish brown (10YR 4/2) interior and 30 percent very dark grayish brown (10YR 3/2) interior silty clay loam; weak medium subangular blocky structure; friable; 3.0 very fine roots throughout; 3.0 very fine tubular and 0.5 fine tubular pores; 5 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented yellowish brown (10YR 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented yellowish red (5YR 5/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube
    Btg2—30 to 46 centimeters (11.8 to 18.1 inches); dark grayish brown (10YR 4/2) interior silty clay; weak fine subangular blocky, and moderate medium prismatic structure; firm; 3.0 very fine roots throughout; 3.0 very fine tubular and 0.5 fine tubular pores; 70 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented red (2.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube
    Btg3—46 to 71 centimeters (18.1 to 28.0 inches); grayish brown (10YR 5/2) interior silty clay; weak medium subangular blocky, and moderate medium prismatic structure; firm; 3.0 very fine roots throughout; 3.0 very fine tubular pores; 35 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube
    2Btg4—71 to 107 centimeters (28.0 to 42.1 inches); 60 percent grayish brown (10YR 5/2) interior and 40 percent dark grayish brown (10YR 4/2) interior silty clay loam; weak medium subangular blocky, and moderate medium prismatic structure; firm; 3.0 very fine roots throughout; 3.0 very fine tubular and 0.5 fine tubular pores; 35 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube
    2Btg5—107 to 132 centimeters (42.1 to 52.0 inches); 70 percent grayish brown (10YR 5/2) interior and 30 percent light brownish gray (10YR 6/2) interior silty clay loam; weak medium subangular blocky, and moderate medium prismatic structure; firm; 3.0 very fine roots throughout; 3.0 very fine tubular pores; 35 percent faint dark grayish brown (10YR 4/2), moist, clay films on all faces of peds and 35 percent faint dark yellowish brown (10YR 4/4), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented dark yellowish brown (10YR 4/4), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube
    2Btg6—132 to 203 centimeters (52.0 to 79.9 inches); 80 percent gray (10YR 5/1) interior and 20 percent gray (10YR 6/1) interior silty clay loam; weak medium subangular blocky, and moderate medium prismatic structure; firm; 3.0 very fine roots throughout; 3.0 very fine tubular pores; 35 percent faint grayish brown (10YR 5/2), moist, clay films on all faces of peds; 1 percent medium faint irregular noncoherent cemented strong brown (7.5YR 4/6), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix and 1 percent medium faint irregular noncoherent cemented black (10YR 2/1), moist, iron depletions with clear boundaries in matrix; fragments; clear wavy boundary.; observed in push tube