IDENTIFIERS

  • Current Taxon Name (Soil Name): Delassus
  • OSD
  • Series Extent
  • User Site ID: 1993MO123002M
  • User Pedon ID: 1993MO123002M
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9312302
  • NCSS Pedon Lab Data NASIS Record ID - 31344
  • Print Date: 11/24/2024

    • 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: 37.6393051
  • Std. Longitude: -90.4076691
  • Datum: WGS84
  • Township: T34N
  • Range: R6E
  • Section: 19
  • PLSS Details: 850 feet S and 1300 feet W of the NE corner
  • Location Description: 850 ft. S. and 1300 ft. W. of the NE corner of sec. 19, T. 34 N., R. 6 E.
  • Map Unit: 77003—Delassus gravelly silt loam, 8 to 15 percent slopes, very bouldery36D—Delassus silt loam, 5 to 15 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-F4—Wachita Mountain, Missouri

    • PEDON

  • Describers Name: MLC, KEB AND CGM
  • Current Taxonomic Class: Fine-loamy, mixed, active, mesic Typic Fragiudults
  • Current Taxon Kind: taxadjunct
  • 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 - 13 to 63 cm.
  • Classificaton Date - 1/31/2012
  • Moisture Class - udic
  • Sampled As Information:
  • Soil Name - Delassus
  • Taxonomic Class - Fine-loamy, mixed, active, mesic Typic Fragiudults
  • Taxon Kind - series
  • PSC - 13 to 63 cm.
  • Classificaton Date - 5/19/1993
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 54 Cation exchange capacity to clay ratio


    • SITE

  • Parent Material: loess over residuum weathered from granite
  • Landscape: mountains
  • Landform: ridge
  • Runoff: medium
  • Drainage Class: moderately well
  • Surface Fragments: 10.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/19/1993 (actual site observation date)
  • Air Photo ID: B-1
  • 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

    bedrock, lithic

    —

    —

    64 - 114

    114 -

    —

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

    ochric epipedon

    argillic horizon

    fragipan

    lithic contact

    0—13

    13—53

    64—114

    114—

    —-

    —-

    —-

    —-
    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

    —

    —

    315

    —

    80

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 13 centimeters (0.0 to 5.1 inches); brown (10YR 4/3), pale brown (10YR 6/3), dry; bouldery silt loam; moderate fine granular structure; very friable; 10.0 very fine to medium roots; 6 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU048204. Ten percent surface boulders in this horizon.
    Bt1—13 to 30 centimeters (5.1 to 11.8 inches); strong brown (7.5YR 4/6) bouldery loam; weak very fine subangular blocky structure; friable; 10.0 very fine and fine roots and 0.5 medium roots; 35 percent faint brown (7.5YR 4/4) clay films on faces of peds; 6 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 5.0, hellige-truog; clear wavy boundary. Lab sample # MU048205. Mixing of A horizon in the upper part of this horizon; ten percent surface boulders in this horizon.
    Bt2—30 to 53 centimeters (11.8 to 20.9 inches); strong brown (7.5YR 4/6) loam; moderate very fine subangular blocky structure; friable; 5.0 fine roots; 15 percent distinct brown (7.5YR 4/3) clay films on faces of peds and 35 percent faint brown (7.5YR 4/4) clay films on faces of peds; 1 percent black (10YR 2/1) iron-manganese masses; 2 percent by volume 75-162-250 millimeter unspecified fragments and 4 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU048206
    EB—53 to 64 centimeters (20.9 to 25.2 inches); dark yellowish brown (10YR 4/4) loam; moderate thin platy parts to weak very fine subangular blocky structure; friable; 0.5 fine roots; dark yellowish brown (10YR 4/6) masses of oxidized iron; 75 percent coarse light brownish gray (10YR 6/2); 7 percent by volume 2-39-75 millimeter unspecified fragments; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU048207
    2Btx1—64 to 81 centimeters (25.2 to 31.9 inches); 50 percent light brownish gray (10YR 6/2) and 40 percent yellowish brown (10YR 5/6) and 10 percent dark yellowish brown (10YR 4/6) loam; weak thin platy parts to weak very fine subangular blocky structure; firm; brittle; 0.5 very fine roots; 10 percent by volume 2-39-75 millimeter unspecified fragments; 50 BT; very strongly acid, pH 4.7, hellige-truog; clear wavy boundary. Lab sample # MU048208. A few pieces of weathered granite were observed and also a few dark gray clay bodies; the roots were in the gray seams.
    2Btx2—81 to 114 centimeters (31.9 to 44.9 inches); 30 percent light brownish gray (10YR 6/2) and 30 percent light gray (10YR 7/2) and 20 percent yellowish brown (10YR 5/6) and 20 percent yellowish brown (10YR 5/8) gravelly coarse sandy loam; weak very fine subangular blocky structure; firm; brittle; 18 percent by volume 2-39-75 millimeter unspecified fragments; 50 BT; very strongly acid, pH 4.7, hellige-truog. Lab sample # MU048209. The fragipan has mottles which form streaks and polygons six inches apart.
    3R—114 centimeters (44.9 inches); bedrock; fragments.