IDENTIFIERS

  • Current Taxon Name (Soil Name): ARMSTRONG
  • OSD
  • Series Extent
  • User Site ID: S1995IA107012
  • User Pedon ID: S1995IA107012
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 95P0829
  • NCSS Pedon Lab Data NASIS Record ID - 67836
  • 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: 41.3148956
  • Std. Longitude: -91.9494781
  • Datum: WGS84
  • Township: 75N
  • Range: 10W
  • Section: 12
  • PLSS Details: 2030 feet north and 1140 feet west of the southeast corner
  • Country: US—United States
  • State: Iowa
  • County: IA107—Keokuk
  • MLRA: 108—Illinois and Iowa Deep Loess and Drift
  • Regional Office: NC—North Central
  • MLRA Soil Survey Area: NC-WAV—Waverly, Iowa
  • Non-MLRA Soil Survey Area: IA107—Keokuk County, Iowa

    • PEDON

  • Describers Name: Pulled with a 3" tube and probe truck by SJE and JAL, described by SJE.
  • Current Taxonomic Class: Fine, montmorillonitic, mesic Aquollic Hapludalfs
  • Current Taxon Kind: series
  • Pedon Type: TUD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 12
  • Sampled As Information:
  • Soil Name - ARMSTRONG
  • Taxonomic Class - Fine, montmorillonitic, mesic Aquollic Hapludalfs
  • Classificaton Date - 8/22/1994
  • Moisture Class - udic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: alluvium
  • Runoff: high
  • Drainage Class: moderately well
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/22/1994 (actual site observation date)
  • Air Photo ID: 56
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - hayland
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • 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

    12

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    —

    232

    —

    150

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    Ap—0 to 15 centimeters (0.0 to 5.9 inches); very dark grayish brown (10YR 3/2), grayish brown (10YR 5/2), dry; clay loam; 20 percent sand; 35 percent clay; moderate very fine and fine granular structure; friable; 0.5 fine roots; fragments; slightly acid, pH 6.2, hellige-truog; abrupt smooth boundary. Lab sample # 95P05268
    BE—15 to 23 centimeters (5.9 to 9.1 inches); brown (10YR 4/3) clay loam; 20 percent sand; 37 percent clay; 1 percent strong brown (7.5YR 4/6) fine prominent mottles; weak coarse prismatic parts to moderate fine and medium subangular blocky structure; friable; 0.5 fine roots; 15 percent distinct dark yellowish brown (10YR 4/4) clay films on faces of peds and 15 percent distinct brown (10YR 5/3) silt coats on faces of peds; 1 percent fine irregular iron-manganese masses; fragments; strongly acid, pH 5.2, hellige-truog; gradual smooth boundary. Lab sample # 95P05269
    2Bt1—23 to 38 centimeters (9.1 to 15.0 inches); yellowish red (5YR 4/6) clay; 25 percent sand; 45 percent clay; 15 percent red (2.5YR 5/8) fine prominent mottles; moderate very fine and fine subangular blocky structure; very firm; 0.5 fine roots; 30 percent distinct brown (7.5YR 4/4) clay films on faces of peds; 1 percent fine irregular iron-manganese masses; fragments; strongly acid, pH 5.2, hellige-truog; gradual smooth boundary. Lab sample # 95P05270
    2Bt2—38 to 56 centimeters (15.0 to 22.0 inches); yellowish red (5YR 4/6) clay; 25 percent sand; 45 percent clay; 15 percent grayish brown (10YR 5/2) fine prominent and 40 percent red (2.5YR 5/8) fine prominent mottles; moderate medium prismatic parts to moderate fine and medium subangular blocky structure; very firm; 0.5 fine roots; 30 percent distinct brown (7.5YR 4/4) clay films on faces of peds; 1 percent fine irregular iron-manganese masses; fragments; strongly acid, pH 5.4, hellige-truog; gradual smooth boundary. Lab sample # 95P05271
    2Bt3—56 to 81 centimeters (22.0 to 31.9 inches); strong brown (7.5YR 5/6) clay loam; 30 percent sand; 38 percent clay; 15 percent grayish brown (10YR 5/2) fine prominent and 30 percent yellowish red (5YR 5/8) fine prominent mottles; moderate medium prismatic parts to moderate medium and coarse subangular blocky structure; firm; 0.5 fine roots; 20 percent distinct brown (7.5YR 4/3) clay films on faces of peds; 1 percent fine irregular iron-manganese masses; fragments; moderately acid, pH 5.8, hellige-truog; gradual smooth boundary. Lab sample # 95P05272
    2Bt4—81 to 109 centimeters (31.9 to 42.9 inches); strong brown (7.5YR 5/6) clay loam; 30 percent sand; 36 percent clay; 10 percent grayish brown (10YR 5/2) fine prominent and 15 percent strong brown (7.5YR 5/8) fine prominent mottles; moderate medium prismatic structure; firm; 0.5 fine roots; 15 percent distinct brown (10YR 4/3) clay films on faces of peds; 1 percent fine irregular iron-manganese masses; fragments; moderately acid, pH 5.8, hellige-truog; gradual smooth boundary. Lab sample # 95P05273
    2BC—109 to 135 centimeters (42.9 to 53.1 inches); yellowish brown (10YR 5/4) and pale brown (10YR 6/3) clay loam; 30 percent sand; 35 percent clay; 10 percent grayish brown (10YR 5/2) fine prominent mottles; weak medium prismatic structure; firm; 0.5 fine roots; 1 percent fine irregular iron-manganese masses; fragments; neutral, pH 6.8, hellige-truog; gradual smooth boundary. Lab sample # 95P05274
    2C1—135 to 160 centimeters (53.1 to 63.0 inches); yellowish brown (10YR 5/6) clay loam; 40 percent sand; 30 percent clay; 2 percent grayish brown (10YR 5/2) fine prominent mottles; massive; firm; 1 percent fine irregular iron-manganese masses; fragments; neutral, pH 7.2, hellige-truog; gradual smooth boundary. Lab sample # 95P05275
    2C2—160 to 198 centimeters (63.0 to 78.0 inches); yellowish brown (10YR 5/6) clay loam; 40 percent sand; 32 percent clay; 25 percent grayish brown (10YR 5/2) medium prominent mottles; massive; firm; 1 percent fine irregular iron-manganese masses; 2 percent medium and coarse irregular carbonate concretions; fragments; strong effervescence; moderately alkaline, pH 8.2, hellige-truog. Lab sample # 95P05276