IDENTIFIERS

  • Current Taxon Name (Soil Name): Delassus
  • OSD
  • Series Extent
  • User Site ID: 1991MO123005M
  • User Pedon ID: 1991MO123005M
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9112305
  • NCSS Pedon Lab Data NASIS Record ID - 27013
  • 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: 37.5826378
  • Std. Longitude: -90.3683319
  • Datum: WGS84
  • Township: T33N
  • Range: R6E
  • Section: 3
  • PLSS Details: 3525 feet W and 4625 feet N of the SE corner
  • Location Description: The pedon is located 3525 ft. W. and 4625 ft. N of SE corner of sec. 3, T. 33 N., R. 6 E.
  • Map Unit: 77002—Delassus silt loam, 3 to 8 percent slopes36C—Delassus silt loam, 2 to 5 percent slopes
  • State: Missouri
  • County: MO123—Madison
  • MLRA: 116A—Ozark Highland
  • Non-MLRA Soil Survey Area: MO123—Madison County, Missouri
  • 7.5 Minute USGS Quad: 37090-E3—Fredericktown, Missouri

    • PEDON

  • Describers Name: KEB, CGM, MLC, RDC
  • Current Taxonomic Class: Fine-silty, mixed, active, mesic Typic Fragiudults
  • Current Taxon Kind: series
  • Pedon Type: within range of map unit
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Delassus
  • PSC - 15 to 64 cm.
  • Classificaton Date - 4/1/2011
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Delassus
  • Taxonomic Class - Fine-loamy, mixed, active, mesic Typic Fragiudults
  • Taxon Kind - series
  • PSC - 15 to 64 cm.
  • Classificaton Date - 5/23/1991
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 53 Cation exchange capacity to clay ratio


    • SITE

  • Parent Material: slope alluvium derived from igneous rock over residuum weathered from igneous rock
  • Landscape: mountains
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Position: middle third
  • Runoff: medium
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/23/1991 (actual site observation date)
  • Air Photo ID: C-3
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    fragipan

    —

    64 - 152

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

    ochric epipedon

    argillic horizon

    fragipan

    0—15

    15—152

    64—152

    —-

    —-

    —-
    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

    6

    —

    —

    277

    —

    225

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 8 centimeters (0.0 to 3.1 inches); yellowish brown (10YR 5/4), very pale brown (10YR 7/3), dry; silt loam; moderate fine granular structure; very friable; moderate permeability; 10.0 fine and medium roots throughout; fragments; strongly acid, pH 5.2, hellige-truog; abrupt wavy boundary. Lab sample # MU013581; moist when described;
    E—8 to 15 centimeters (3.1 to 5.9 inches); brownish yellow (10YR 6/6) silt loam; moderate fine subangular blocky parts to moderate fine granular structure; very friable; 10.0 fine roots throughout; fragments; very strongly acid, pH 4.8, hellige-truog; clear wavy boundary. Lab sample # MU013582; moist when described;
    Bt1—15 to 43 centimeters (5.9 to 16.9 inches); strong brown (7.5YR 5/6) silty clay loam; moderate very fine subangular blocky structure; friable; 3.0 very fine and fine roots throughout; 75 percent faint clay films on faces of peds; fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU013583; moist when described;. discontinuous - phpvsfiid 168196; discontinuous - phpvsfiid 168196
    Bt2—43 to 64 centimeters (16.9 to 25.2 inches); strong brown (7.5YR 4/6) silty clay loam; 1 percent reddish brown (5YR 4/4) fine distinct mottles; moderate thin platy parts to weak very fine subangular blocky structure; friable; 3.0 fine to coarse roots throughout; 75 percent distinct clay films on faces of peds; 10 percent coarse noncoherent cemented light brownish gray (10YR 6/2) iron depletions; 1 percent by volume 75-162-250 millimeter igneous, unspecified fragments; very strongly acid, pH 4.7, hellige-truog; abrupt wavy boundary. Lab sample # MU013584; moist when described;. discontinuous - phpvsfiid 168197; discontinuous - phpvsfiid 168197
    2Btx1—64 to 79 centimeters (25.2 to 31.1 inches); 50 percent yellowish brown (10YR 5/6) and 50 percent grayish brown (10YR 5/2) silt loam; moderate coarse prismatic parts to moderate medium platy structure; firm; brittle; slow permeability; 0.5 very fine roots between peds; 35 percent prominent clay films on faces of peds; 1 percent by volume 75-162-250 millimeter igneous, unspecified fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU013585; moist when described;. Horizon is 70 percent brittle.; discontinuous - phpvsfiid 168198; discontinuous - phpvsfiid 168198
    2Btx2—79 to 117 centimeters (31.1 to 46.1 inches); 75 percent light yellowish brown (10YR 6/4) and 25 percent pale brown (10YR 6/3) loam; moderate coarse prismatic parts to moderate medium platy structure; extremely firm*; brittle; 10 percent prominent clay films on vertical faces of peds and 10 percent prominent brownish yellow (10YR 6/8) iron stains on vertical faces of peds and 35 percent distinct gray (10YR 6/1) silt coats on vertical faces of peds; 1 percent fine weakly coherent cemented iron concretions; 1 percent by volume 75-162-250 millimeter igneous, unspecified fragments and 12 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.6, hellige-truog; clear wavy boundary. Lab sample # MU013586; moist when described;. Horizon is 90 percent brittle.; patchy - phpvsfiid 168199; discontinuous - phpvsfiid 168200; patchy - phpvsfiid 168201; patchy - phpvsfiid 168199; discontinuous - phpvsfiid 168200; patchy - phpvsfiid 168201
    2Btx3—117 to 152 centimeters (46.1 to 59.8 inches); 60 percent red (2.5YR 4/8) and 40 percent brownish yellow (10YR 6/6) sandy loam; weak coarse prismatic parts to weak medium platy structure; firm; brittle; 15 percent prominent light brownish gray (10YR 6/2) silt coats on faces of peds and 35 percent distinct clay films on faces of peds; 10 percent fine weakly coherent cemented iron concretions; fragments; very strongly acid, pH 4.7, hellige-truog. Lab sample # MU013587; moist when described;. Horizon is 30 percent brittle.; discontinuous - phpvsfiid 168202; patchy - phpvsfiid 168203; discontinuous - phpvsfiid 168202; patchy - phpvsfiid 168203