IDENTIFIERS

  • Current Taxon Name (Soil Name): Delassus
  • OSD
  • Series Extent
  • User Site ID: 1997MO203029M
  • User Pedon ID: 1997MO203029M
  • User Site Association ID: 8656
  • Transect:
  • Transect Stop Number - 7
  • Transect Interval - 200.0
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - MCL
  • Lab Pedon # - M9761329
  • NCSS Pedon Lab Data NASIS Record ID - 27054
  • Print Date: 1/28/2025

    • 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: 37.1258333
  • Std. Longitude: -91.2340694
  • Datum: WGS84
  • State: Missouri
  • County: MO203—Shannon
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO203—Shannon County, Missouri
  • 7.5 Minute USGS Quad: 37091-B2—Powder Mill Ferry, Missouri

    • PEDON

  • Describers Name: BM, SB, MS, LT
  • Current Taxonomic Class: Fine-loamy, mixed, active, mesic Typic Fragiudults
  • Current Taxon Kind: taxadjunct
  • Pedon Type: map unit inclusion
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Delassus
  • PSC - 30 to 56 cm.
  • Classificaton Date - 1/31/2012
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Delassus
  • Taxonomic Class - Fine-loamy, mixed, active, mesic Typic Fragiudults
  • Taxon Kind - series
  • PSC - 30 to 56 cm.
  • Classificaton Date - 5/12/1997
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 16.6 percent of Percent clay in the control section and 32 Percent rock fragments in the control section (vol)


    • SITE

  • Parent Material: residuum weathered from acid igneous rock
  • Landscape: hills
  • Landform: hill
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/12/1997 (actual site observation date)
  • Air Photo ID: 15
  • Surface Cover Properties:
  • 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

    bedrock, lithic

    —

    —

    56 - 102

    102 -

    —

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

    ochric epipedon

    argillic horizon

    fragipan

    lithic contact

    0—30

    30—56

    56—102

    102—

    —-

    —-

    —-

    —-
    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

    9

    —

    —

    303

    —

    326

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 15 centimeters (0.0 to 5.9 inches); brown (10YR 5/3) gravelly silt loam; weak fine granular structure; very friable; 7.0 fine to coarse roots; 7.0 fine interstitial and tubular pores; 5 percent by volume 2-39-75 millimeter rhyolite fragments and 15 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU013863
    E—15 to 30 centimeters (5.9 to 11.8 inches); pale brown (10YR 6/3) gravelly silt loam; weak fine subangular blocky structure; friable; 7.0 fine to coarse roots; 7.0 fine tubular pores; 15 percent distinct yellowish brown (10YR 5/4), moist, clay films on faces of peds and 15 percent distinct pale brown (10YR 6/3), moist, silt coats on faces of peds; 20 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU013864
    Bt—30 to 56 centimeters (11.8 to 22.0 inches); yellowish brown (10YR 5/4) gravelly silt loam; weak fine subangular blocky structure; friable; 0.9 medium and coarse roots and 3.0 fine roots; 3.0 fine tubular pores; 35 percent distinct pale brown (10YR 6/3), moist, silt coats on rock fragments and 35 percent distinct brown (7.5YR 5/4), moist, clay films on rock fragments; 2 percent by volume 2-39-75 millimeter rhyolite fragments and 30 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU013865
    2Btx—56 to 102 centimeters (22.0 to 40.2 inches); pale brown (10YR 6/3) very gravelly loam; weak fine subangular blocky structure; friable; brittle; 0.1 fine tubular pores; 15 percent distinct strong brown (7.5YR 5/6), moist, clay films on rock fragments and 35 percent distinct yellowish brown (10YR 5/6), moist, clay films on faces of peds and 35 percent distinct gray (10YR 6/1), moist, clay films on faces of peds and 35 percent distinct pale brown (10YR 6/3), moist, silt coats on faces of peds; 10 percent by volume 75-162-250 millimeter rhyolite fragments and 45 percent by volume nonflat indurated 2-40-75 millimeter chert fragments; very strongly acid, pH 4.7, hellige-truog; clear smooth boundary. Lab sample # MU013866. 60 percent brittleness
    3R—102 centimeters (40.2 inches); bedrock; fragments. Rhyolite bedrock at 40 inches.