IDENTIFIERS

  • Current Taxon Name (Soil Name): Tonti
  • OSD
  • Series Extent
  • User Site ID: 1993MO161023M
  • User Pedon ID: 1993MO161023
  • Transect:
  • User Transect ID - T1093
  • Transect Stop Number - 6
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9316123
  • Print Date: 1/30/2025

    • 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: 37.8238333
  • Std. Longitude: -92.2307778
  • Datum: WGS84
  • Map Unit: 73183—Scholten-Tonti complex, 3 to 15 percent slopes
  • State: Missouri
  • County: MO161—Phelps
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO161—Phelps County, Missouri

    • PEDON

  • Describers Name: S.L., R.R. & G.B.
  • Current Taxonomic Class: Fine-loamy, siliceous, active, mesic Typic Fragiudults
  • Current Taxon Kind: series
  • Pedon Type: representative pedon for component
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Tonti
  • PSC - 10 to 56 cm.
  • Classificaton Date - 1/31/2012
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - udic
  • Moisture Subclass - udic
  • Sampled As Information:
  • Soil Name - Tonti
  • Taxon Kind - series
  • Classificaton Date - 6/29/1993
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess and/or slope alluvium derived from mixed and/or residuum weathered from sandstone
  • Landscape: upland
  • Landform: hillside
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: shoulder
  • Slope Position: upper third
  • Slope Shape Across: convex
  • Slope Shape Down: linear
  • Drainage Class: moderately well
  • Geology: Roubidoux formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/29/1993 (actual site observation date)
  • Air Photo ID: A-6
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • 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

    —

    56 - 119

    —
    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

    7

    —

    —

    323

    —

    110

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); slightly decomposed plant material; fragments.
    A—3 to 10 centimeters (1.2 to 3.9 inches); brown (10YR 5/3) broken face, pale brown (10YR 6/3) broken face, dry; silt loam; weak fine granular structure; very friable; 5.0 very fine and fine roots and 0.5 very coarse roots; fragments; very strongly acid, pH 4.6, hellige-truog; abrupt wavy boundary. Lab sample # MU048677; observed in trench
    Bt1—10 to 18 centimeters (3.9 to 7.1 inches); yellowish brown (10YR 5/4) broken face silt loam; weak fine subangular blocky structure; friable; 5.0 very fine to medium roots; 1 percent faint clay films on faces of peds; fragments; very strongly acid, pH 4.7, hellige-truog; abrupt wavy boundary. Lab sample # MU048678; observed in trench. Upon review of lab data and related features BE changed to Bt1 w/few faint clay films.
    Bt2—18 to 36 centimeters (7.1 to 14.2 inches); brown (7.5YR 5/4) broken face silt loam; weak medium subangular blocky structure; friable; 5.0 fine and medium roots; 5 percent faint clay films on faces of peds; 2 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU048679; observed in trench
    Bt3—36 to 56 centimeters (14.2 to 22.0 inches); dark yellowish brown (10YR 4/6) broken face gravelly silt loam; weak medium subangular blocky structure; friable; 5.0 medium roots and 0.5 fine roots and 0.5 coarse roots; 25 percent distinct clay films on faces of peds; 10 percent by volume 2-39-75 millimeter sandstone, unspecified fragments and 20 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.6, hellige-truog; clear smooth boundary. Lab sample # MU048680; observed in trench
    2Btx1—56 to 84 centimeters (22.0 to 33.1 inches); 45 percent yellowish brown (10YR 5/4) broken face extremely gravelly silt loam; moderate very coarse prismatic structure; extremely firm*; brittle; skeletans over cutans and 25 percent distinct clay films on faces of peds; 25 percent medium prominent irregular noncoherent cemented yellowish brown (10YR 5/8), moist, masses of oxidized iron with clear boundaries throughout and 25 percent medium faint irregular noncoherent cemented brown (10YR 5/3), moist, iron depletions throughout; 5 percent by volume 75-162-250 millimeter sandstone, unspecified fragments and 15 percent by volume 2-39-75 millimeter sandstone, unspecified fragments and 50 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.5, hellige-truog; gradual wavy boundary. Lab sample # MU048681; observed in trench. Gray seams are 10YR 6/1 iron depletions. They are about 1/2" wide along verticle prism faces, which are about 8" apart.; horizon is about 84% brittle.
    2Btx2—84 to 119 centimeters (33.1 to 46.9 inches); 70 percent dark yellowish brown (10YR 4/4) broken face extremely gravelly loam; moderate very coarse prismatic structure; extremely firm*; brittle; skeletans over cutans and 25 percent distinct clay films on faces of peds; 25 percent medium faint irregular noncoherent cemented brown (10YR 5/3), moist, iron depletions with clear boundaries throughout; 5 percent by volume 75-162-250 millimeter sandstone, unspecified fragments and 15 percent by volume 2-39-75 millimeter sandstone, unspecified fragments and 50 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.5, hellige-truog; gradual wavy boundary. Lab sample # MU048682; observed in trench. Gray seams are 10YR6/1 reduced iron. They are about 1/2" wide along prism faces which are about 8" across.; This horizon is about 84% brittle.
    3Bt4—119 to 165 centimeters (46.9 to 65.0 inches); 50 percent yellowish red (5YR 4/6) broken face and 25 percent red (2.5YR 5/6) broken face very gravelly clay; moderate medium subangular blocky structure; firm; 30 percent distinct clay films on faces of peds; 25 percent medium prominent irregular noncoherent cemented iron depletions on faces of peds; 25 percent by volume 2-39-75 millimeter sandstone, unspecified fragments and 25 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.6, hellige-truog. Lab sample # MU048683; observed in trench