IDENTIFIERS

  • Current Taxon Name (Soil Name): Armstrong
  • OSD
  • Series Extent
  • User Site ID: 1990MO019034
  • User Pedon ID: 1990MO019034
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - MCL
  • Lab Pedon # - M9001934
  • NCSS Pedon Lab Data NASIS Record ID - 34383
  • 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: 38.9082362
  • Std. Longitude: -92.2798485
  • Datum: WGS84
  • Range: R12W
  • Section: 28
  • Location Description: 1350 feet east and 1700 feet north of the southwest corner of Sec. 28, T.48N.,R.12W.
  • State: Missouri
  • County: MO019—Boone
  • MLRA: 115—Central Mississippi Valley Wooded Slopes

    • PEDON

  • Describers Name: A.W. Geller
  • Pedon Type: within range of map unit
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Armstrong
  • PSC - 25 to 76 cm.
  • Classificaton Date - 8/2/1990
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess and/or till
  • Landscape: hills
  • Landform: hillside
  • Runoff: low
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/2/1990 (actual site observation date)
  • Air Photo ID: 36
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    ochric epipedon

    argillic horizon

    0—18

    25—165

    —-

    —-
    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

    4

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 18 centimeters (0.0 to 7.1 inches); very dark gray (10YR 3/1), gray (10YR 5/1), dry; silt loam; weak fine subangular blocky structure; friable; 6.0 very fine roots and 0.1 fine roots; fragments; slightly acid, pH 6.3, hellige-truog; clear smooth boundary. Lab sample # MU037075
    EA—18 to 25 centimeters (7.1 to 9.8 inches); brown (10YR 5/3) silt loam; 15 percent very dark gray (10YR 3/1) fine distinct mottles; weak medium platy parts to moderate fine subangular blocky structure; friable; 6.0 very fine roots; 1 percent fine yellowish brown (10YR 5/6) masses of oxidized iron; fragments; moderately acid, pH 5.8, hellige-truog; clear smooth boundary. Lab sample # MU037076
    Bt1—25 to 41 centimeters (9.8 to 16.1 inches); yellowish brown (10YR 5/4) silty clay loam; 15 percent dark grayish brown (10YR 4/2) fine distinct mottles; moderate medium subangular blocky structure; firm; 3.0 very fine roots; 10 percent faint silt coats on faces of peds and 30 percent faint clay films; 15 percent fine brown (7.5YR 4/4) masses of oxidized iron; fragments; very strongly acid, pH 4.9, hellige-truog; clear smooth boundary. Lab sample # MU037077. (Note: There are a few fine worm casts present.)
    2Bt2—41 to 56 centimeters (16.1 to 22.0 inches); strong brown (7.5YR 5/6) silty clay loam; 25 percent gray (7.5YR 5/1) fine prominent mottles; moderate medium subangular blocky structure; firm; 0.1 very fine roots; 30 percent distinct clay films; 10 percent fine yellowish red (5YR 4/6) masses of oxidized iron; fragments; very strongly acid, pH 4.7, hellige-truog; clear smooth boundary. Lab sample # MU037078. (Note: There are a few fine worm casts present).
    2Btg1—56 to 76 centimeters (22.0 to 29.9 inches); yellowish brown (10YR 5/6) and gray (10YR 5/1) clay loam; weak medium subangular blocky structure; firm; 0.1 very fine roots; 30 percent distinct clay films; 10 percent fine dark yellowish brown (10YR 4/4) masses of oxidized iron; fragments; very strongly acid, pH 4.8, hellige-truog; clear smooth boundary. Lab sample # MU037079
    2Btg2—76 to 102 centimeters (29.9 to 40.2 inches); light brownish gray (10YR 6/2) clay loam; weak medium subangular blocky structure; firm; 0.1 very fine roots; 30 percent distinct clay films; 1 percent fine yellowish brown (10YR 5/6) masses of oxidized iron and 1 percent fine brown (7.5YR 4/4) masses of oxidized iron and 1 percent iron-manganese concretions; fragments; very strongly acid, pH 5.0, hellige-truog; clear smooth boundary. Lab sample # MU037080
    2Btg3—102 to 117 centimeters (40.2 to 46.1 inches); light brownish gray (10YR 6/2) clay loam; 1 percent light brownish gray (10YR 6/2) fine faint mottles; weak medium platy parts to weak fine subangular blocky structure; firm; 0.1 very fine roots; 15 percent distinct grayish brown (10YR 5/2) clay films and 30 percent faint clay films; 15 percent medium brown (7.5YR 4/4) masses of oxidized iron and 15 percent medium iron-manganese concretions; fragments; slightly acid, pH 6.1, hellige-truog; clear smooth boundary. Lab sample # MU037081
    3Btg4—117 to 130 centimeters (46.1 to 51.2 inches); gray (10YR 6/1) loam; weak medium subangular blocky structure; firm; 0.1 very fine roots; 10 percent faint clay films; 1 percent fine strong brown (7.5YR 5/6) masses of oxidized iron; fragments; moderately acid, pH 5.9, hellige-truog; abrupt smooth boundary. Lab sample # MU037082
    3Btg5—130 to 165 centimeters (51.2 to 65.0 inches); gray (10YR 6/1) silty clay; moderate medium subangular blocky structure; very firm; 10 percent faint clay films; 25 percent fine iron-manganese concretions and 25 percent fine and medium strong brown (7.5YR 5/8) masses of oxidized iron; fragments; slightly acid, pH 6.4, hellige-truog. Lab sample # MU037083