IDENTIFIERS

  • Current Taxon Name (Soil Name): Gravois
  • OSD
  • Series Extent
  • User Site ID: 1997MO131036M
  • User Pedon ID: 1997MO131036
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9713120
  • Print Date: 4/27/2025

    • 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: 38.2308223
  • Std. Longitude: -92.5192048
  • Datum: WGS84
  • Township: T40N
  • Range: R14W
  • Section: 7
  • PLSS Details: 2000 feet N and 2325 feet E of the SW corner
  • State: Missouri
  • County: MO131—Miller
  • MLRA: 116A—Ozark Highland

    • PEDON

  • Describers Name: DEV, DWW
  • Current Taxonomic Class: Fine-silty, mixed Oxyaquic Paleudalfs
  • Current Taxon Kind: taxadjunct
  • Pedon Type: within range of map unit
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Gravois
  • Taxonomic Class - Fine-silty, mixed Oxyaquic Paleudalfs
  • Taxon Kind - taxadjunct
  • PSC - 10 to 60 cm.
  • Classificaton Date - 3/24/1997
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess over pedisediment over residuum
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: shoulder
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/24/1997 (actual site observation date)
  • Air Photo ID: 8A
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    fragipan

    0—10

    10—203

    53—76

    —-

    —-

    —-
    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

    —

    —

    260

    —

    287

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 10 centimeters (0.0 to 3.9 inches); brown (10YR 4/3) silt loam; moderate fine granular structure; very friable; 3.0 very fine and fine roots and 0.5 medium roots; 0.5 fine vesicular and tubular pores; fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU018558
    Bt1—10 to 23 centimeters (3.9 to 9.1 inches); yellowish brown (10YR 5/4) silt loam; weak fine subangular blocky structure; friable; 0.8 fine roots; 0.5 fine vesicular and tubular pores; 10 percent distinct yellowish brown (10YR 5/4) clay films on faces of peds; fragments; extremely acid, pH 4.3, hellige-truog; gradual smooth boundary. Lab sample # MU018559. patchy - phpvsfiid 126824; patchy - phpvsfiid 126824
    Bt2—23 to 38 centimeters (9.1 to 15.0 inches); yellowish brown (10YR 5/4) silty clay loam; moderate fine subangular blocky structure; firm; 0.5 fine roots; 0.5 fine vesicular and tubular pores; 30 percent distinct yellowish brown (10YR 5/4) clay films on faces of peds; fragments; extremely acid, pH 4.2, hellige-truog; gradual smooth boundary. Lab sample # MU018560. continuous - phpvsfiid 126825; continuous - phpvsfiid 126825
    Bt3—38 to 53 centimeters (15.0 to 20.9 inches); yellowish brown (10YR 5/4) and 5 percent strong brown (7.5YR 5/6) silty clay loam; 5 percent light brownish gray (10YR 6/2) fine distinct mottles; moderate fine subangular blocky structure; firm; 0.3 fine and medium roots and 0.1 coarse roots; 0.5 fine vesicular and tubular pores; 35 percent distinct yellowish brown (10YR 5/4) clay films on faces of peds; fragments; extremely acid, pH 4.1, hellige-truog; clear smooth boundary. Lab sample # MU018561. continuous - phpvsfiid 126826; continuous - phpvsfiid 126826
    2Btx1—53 to 76 centimeters (20.9 to 29.9 inches); 60 percent light brownish gray (10YR 6/2) and 40 percent yellowish brown (10YR 5/6) silt loam; 10 percent gray (10YR 6/1) fine and medium distinct mottles; moderate coarse prismatic parts to weak fine subangular blocky structure; very firm; brittle; 0.2 very fine and fine roots; 0.3 very fine and fine vesicular and tubular pores; 10 percent distinct light gray (10YR 7/1) silt coats on faces of peds and 15 percent prominent gray (10YR 6/1) clay films on faces of peds and in pores; fragments; extremely acid, pH 4.1, hellige-truog; gradual smooth boundary. Lab sample # MU018562. Roots in primary structural seams <4" apart. About 50 percent brittleness in matrix.; patchy - phpvsfiid 126827; patchy - phpvsfiid 126828; patchy - phpvsfiid 126827; patchy - phpvsfiid 126828
    2Btx2—76 to 119 centimeters (29.9 to 46.9 inches); yellowish brown (10YR 5/4) and 5 percent yellowish brown (10YR 5/6) extremely gravelly silt loam; 10 percent light brownish gray (10YR 6/2) fine and medium distinct mottles; moderate coarse prismatic parts to weak coarse platy structure; very firm; brittle; 0.1 very fine and fine roots; 0.3 fine vesicular and tubular pores; 10 percent prominent light brownish gray (10YR 6/2) clay films on faces of peds and 20 percent faint light gray (10YR 7/1) silt coats on faces of peds; 70 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; extremely acid, pH 4.3, hellige-truog; gradual smooth boundary. Lab sample # MU018563. Roots in seams >4" apart. About 50 percent brittleness in matrix.; patchy - phpvsfiid 126829; patchy - phpvsfiid 126830; patchy - phpvsfiid 126829; patchy - phpvsfiid 126830
    3Bt4—119 to 152 centimeters (46.9 to 59.8 inches); dark red (2.5YR 3/6) very gravelly clay; weak and moderate fine and medium subangular blocky structure; very firm; 10 percent distinct dark reddish brown (2.5YR 3/4) clay films on faces of peds; 40 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; extremely acid, pH 4.3, hellige-truog; gradual smooth boundary. Lab sample # MU018564. patchy - phpvsfiid 126831; patchy - phpvsfiid 126831
    3Bt5—152 to 203 centimeters (59.8 to 79.9 inches); dark red (2.5YR 3/6) clay; moderate fine subangular blocky structure; very firm; 30 percent distinct dark reddish brown (2.5YR 3/4) clay films on faces of peds; 10 percent by volume subangular 2-39-75 millimeter limestone, cherty fragments; very strongly acid, pH 4.8, hellige-truog. Lab sample # MU018565. continuous - phpvsfiid 126832; continuous - phpvsfiid 126832