IDENTIFIERS

  • Current Taxon Name (Soil Name): Seymour
  • OSD
  • Series Extent
  • User Site ID: S1984IA1770022
  • User Pedon ID: 84IA1770022
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 85P0308
  • NCSS Pedon Lab Data NASIS Record ID - 56024
  • 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: 40.7000008
  • Std. Longitude: -91.9583359
  • Datum: WGS84
  • Township: 68N
  • Range: 10W
  • Section: 12
  • PLSS Details: 1870 feet north and 460 feet west of the southeast corner
  • Country: US—United States
  • State: Iowa
  • County: IA177—Van Buren
  • MLRA: 109—Iowa and Missouri Heavy Till Plain
  • Regional Office: NC—North Central
  • MLRA Soil Survey Area: NC-GAL—Gallatin, Missouri
  • Non-MLRA Soil Survey Area: IA177—Van Buren County, Iowa

    • PEDON

  • Describers Name: J. Lucassen
  • Current Taxonomic Class: Fine, smectitic, mesic Aquic Argiudolls
  • Current Taxon Kind: taxadjunct
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 2
  • Correlated Information:
  • Soil Name - Seymour
  • PSC - 33 to 83 cm.
  • Classificaton Date - 7/11/2007
  • Moisture Class - udic
  • Moisture Subclass - aquic
  • Sampled As Information:
  • Soil Name - Seymour
  • Taxonomic Class - Fine, montmorillonitic, mesic Aquic Argiudoll
  • Taxon Kind - series
  • Classificaton Date - 11/1/1984
  • Moisture Class - udic
  • Moisture SUBClass - aquic
  • Dynamic Soil Properties:
  • Erosion Class - 2
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess derived from mixed-calcareous and/or alluvium derived from mixed-calcareous
  • Landscape: upland
  • Landform: upland slope
  • Slope Shape Down: concave
  • Drainage Class: somewhat poorly
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/1/1984 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop 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

    mollic epipedon

    argillic horizon

    0—20

    33—122

    —-

    —-
    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

    3

    —

    —

    —

    —

    315

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    1Ap—0 to 20 centimeters (0.0 to 7.9 inches); very dark gray (10YR 3/1) interior silty clay loam; weak medium subangular blocky, and weak fine granular structure; friable; 0.5 fine roots; fragments; moderately acid, pH 5.8, hellige-truog; abrupt smooth boundary. Lab sample # 85P01478; moist when described;. Some streaks and pockets of 2.5Y 4/2.; few fine roots
    1BA—20 to 33 centimeters (7.9 to 13.0 inches); dark grayish brown (2.5Y 4/2) interior silty clay loam; 11 percent dark grayish brown (10YR 4/2) fine distinct and 11 percent yellowish brown (10YR 5/6) fine prominent and 11 percent yellowish brown (10YR 5/8) fine prominent mottles; moderate fine and medium subangular blocky structure; friable; 0.5 fine roots; 55 percent very dark gray (10YR 3/1), moist, organic stains on faces of peds and 55 percent , moist, clay films on faces of peds; fragments; strongly acid, pH 5.4, hellige-truog; clear smooth boundary. Lab sample # 85P01479; moist when described;. Also 7.5YR 5/8 mottles.; many organic coats surface features on faces of peds; many clay films surface features on faces of peds; few fine roots; common fine distinct 10YR42 mottles; common fine prominent 10YR56 mottles; common fine prominent 10YR58 mottles; continuous - phpvsfiid 230617; continuous - phpvsfiid 230617
    1Bt1—33 to 51 centimeters (13.0 to 20.1 inches); dark grayish brown (2.5Y 4/2) interior silty clay; 11 percent strong brown (7.5YR 4/6) fine prominent and 11 percent strong brown (7.5YR 5/8) fine prominent and 11 percent dark yellowish brown (10YR 4/4) fine prominent mottles; moderate medium subangular blocky structure; firm; 0.5 fine roots; 55 percent , moist, clay films on faces of peds; fragments; strongly acid, pH 5.2, hellige-truog; gradual smooth boundary. Lab sample # 85P01480; moist when described;. Also 10YR 5/6 mottles.; many clay films surface features on faces of peds; few fine roots; common fine prominent 7.5YR46 mottles; common fine prominent 7.5YR58 mottles; common fine prominent 10YR44 mottles; continuous - phpvsfiid 230618; continuous - phpvsfiid 230618
    1Bt2—51 to 66 centimeters (20.1 to 26.0 inches); dark grayish brown (2.5Y 4/2) interior silty clay; 11 percent strong brown (7.5YR 4/6) fine prominent and 11 percent strong brown (7.5YR 5/8) fine prominent and 11 percent dark yellowish brown (10YR 4/4) fine prominent mottles; moderate medium subangular blocky structure; very firm; 0.5 fine roots; 55 percent , moist, clay films on faces of peds; fragments; moderately acid, pH 6.0, hellige-truog; gradual smooth boundary. Lab sample # 85P01481; moist when described;. Also 10YR 5/6 mottles.; many clay films surface features on faces of peds; few fine roots; common fine prominent 7.5YR46 mottles; common fine prominent 7.5YR58 mottles; common fine prominent 10YR44 mottles; continuous - phpvsfiid 230619; continuous - phpvsfiid 230619
    1Bt3—66 to 81 centimeters (26.0 to 31.9 inches); dark grayish brown (2.5Y 4/2) interior silty clay; 11 percent strong brown (7.5YR 4/6) medium prominent and 11 percent strong brown (7.5YR 5/8) medium prominent and 11 percent dark yellowish brown (10YR 4/4) medium prominent mottles; moderate medium subangular blocky structure; very firm; 0.5 fine roots; 55 percent , moist, clay films on faces of peds; 1 percent fine iron-manganese masses; fragments; slightly acid, pH 6.4, hellige-truog; gradual smooth boundary. Lab sample # 85P01482; moist when described;. Also 10YR 5/6 mottles.; few fine soft masses of iron-manganese concentrations; many clay films surface features on faces of peds; few fine roots; common medium prominent 7.5YR46 mottles; common medium prominent 7.5YR58 mottles; common medium prominent 10YR44 mottles; continuous - phpvsfiid 230620; continuous - phpvsfiid 230620
    1Bt4—81 to 104 centimeters (31.9 to 40.9 inches); grayish brown (2.5Y 5/2) interior silty clay; 11 percent yellowish brown (10YR 5/6) medium prominent and 30 percent 5YR 4/8 (5YR 4/8) medium and coarse prominent and 30 percent strong brown (7.5YR 5/8) medium and coarse prominent mottles; moderate medium subangular blocky structure; firm; 0.5 fine roots; 55 percent , moist, clay films on faces of peds; 1 percent fine iron-manganese masses; fragments; neutral, pH 6.6, hellige-truog; gradual smooth boundary. Lab sample # 85P01483; moist when described;. Also 10YR 5/8 mottles.; few fine soft masses of iron-manganese concentrations; many clay films surface features on faces of peds; few fine roots; many medium and coarse prominent 5YR48 mottles; many medium and coarse prominent 7.5YR58 mottles; common medium prominent 10YR56 mottles; continuous - phpvsfiid 230621; continuous - phpvsfiid 230621
    1Bt5—104 to 122 centimeters (40.9 to 48.0 inches); gray (10YR 5/1) interior silty clay loam; 1 percent strong brown (7.5YR 4/6) medium prominent and 1 percent strong brown (7.5YR 5/8) medium prominent mottles; moderate medium subangular blocky structure; firm; 37 percent , moist, clay films on faces of peds; 1 percent fine iron-manganese masses; fragments; neutral, pH 6.6, hellige-truog; clear smooth boundary.; moist when described;. Not sampled.; few fine soft masses of iron-manganese concentrations; common clay films surface features on faces of peds; few medium prominent 7.5YR46 mottles; few medium prominent 7.5YR58 mottles; continuous - phpvsfiid 230622; continuous - phpvsfiid 230622
    2C—122 to 152 centimeters (48.0 to 59.8 inches); dark gray (N 4/0) interior clay; 1 percent dark brown (7.5YR 3/4) fine prominent and 1 percent brown (7.5YR 4/4) fine prominent mottles; massive; extremely firm*; fragments; neutral, pH 6.6, hellige-truog.; moist when described;. Not sampled.; few fine prominent 7.5YR34 mottles; few fine prominent 7.5YR44 mottles