IDENTIFIERS

  • Current Taxon Name (Soil Name): Irwin
  • OSD
  • Series Extent
  • User Site ID: 01KS197003
  • User Pedon ID: 01KS197003
  • User Site Association ID: Kansas State University Laboratory Pedons
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSU
  • Lab Pedon # - 01KS197003
  • NCSS Pedon Lab Data NASIS Record ID - 40162
  • Print Date: 4/17/2025

    • 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: 38.8383789
  • Std. Longitude: -96.4128952
  • Datum: WGS84
  • Township: 14S
  • Range: 9E
  • Section: 16
  • PLSS Details: 1100 feet west and 700 feet south of the northeast corner
  • Location Description: About 4 miles east and 2 miles south of Alta Vista, Kansas.
  • Map Unit: Ib—IRWIN SILTY CLAY LOAM, 1 TO 3 PERCENT SLOPES
  • State: Kansas
  • County: KS197—Wabaunsee
  • MLRA: 76—Bluestem Hills
  • Non-MLRA Soil Survey Area: KS197—Wabaunsee County, Kansas
  • 7.5 Minute USGS Quad: 38096-G4—Alta Vista, Kansas

    • PEDON

  • Describers Name: W. Wehmueller
  • Current Taxonomic Class: Fine, smectitic, mesic Pachic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: within range of map unit
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Sampled As Information:
  • Soil Name - Irwin
  • Taxonomic Class - Fine, smectitic, mesic Pachic Argiustolls
  • PSC - 14 to 64 cm.
  • Classificaton Date - 8/8/2001
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 76 cm of Depth to paleosol


    • SITE

  • Parent Material: silty and clayey loess over clayey alluvium over clayey residuum weathered from clayey shale
  • Landscape: upland
  • Landform: hillslope
  • Geomorphic Component Hills: side slope
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: moderately well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/8/2001 (actual site observation date)
  • Air Photo ID: 49
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • 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

    mollic epipedon

    argillic horizon

    secondary carbonates

    paralithic contact

    0—55

    14—158

    55—

    158—

    —55—

    —144—

    —-

    —-
    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

    2

    —

    —

    445

    —

    300

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 14 centimeters (0.0 to 5.5 inches);, very dark grayish brown (10YR 3/2) exterior, moist; silty clay loam; moderate medium granular structure; firm; slow permeability; fragments; clear smooth boundary. Lab sample # KSUSS2423; observed in push tube
    Bt1—14 to 40 centimeters (5.5 to 15.7 inches);, very dark brown (10YR 2/2) exterior, moist; silty clay; moderate fine subangular blocky structure; very firm; very slow permeability; 15 percent distinct very dark grayish brown (10YR 3/2), moist, clay films on vertical faces of peds; fragments; clear smooth boundary. Lab sample # KSUSS2424. discontinuous - phpvsfiid 172286; discontinuous - phpvsfiid 172286
    Bt2—40 to 55 centimeters (15.7 to 21.7 inches);, very dark grayish brown (10YR 3/2) exterior and dark brown (10YR 3/3) crushed, moist; silty clay; moderate fine subangular blocky structure; very firm; very slow permeability; 15 percent distinct very dark grayish brown (10YR 3/2), moist, clay films on vertical faces of peds; fragments; clear smooth boundary. Lab sample # KSUSS2425. discontinuous - phpvsfiid 172285; discontinuous - phpvsfiid 172285
    Btk—55 to 76 centimeters (21.7 to 29.9 inches);, brown (10YR 4/3) exterior, moist; silty clay; weak fine subangular blocky structure; extremely firm; very slow permeability; 15 percent distinct dark brown (10YR 3/3), moist, clay films on vertical faces of peds; 3 percent fine spherical weakly coherent cemented carbonate nodules with clear boundaries in matrix; fragments; clear boundary. Lab sample # KSUSS2426. discontinuous - phpvsfiid 172284; discontinuous - phpvsfiid 172284
    2Bt3—76 to 90 centimeters (29.9 to 35.4 inches);, dark brown (7.5YR 3/3) exterior, moist; silty clay; moderate medium subangular blocky structure; very firm; very slow permeability; 15 percent distinct dark brown (7.5YR 3/3), moist, clay films on vertical faces of peds; 1 percent medium spherical weakly coherent cemented carbonate nodules with clear boundaries in matrix; fragments; gradual boundary. Lab sample # KSUSS2427. patchy - phpvsfiid 172283; patchy - phpvsfiid 172283
    2Bt4—90 to 140 centimeters (35.4 to 55.1 inches);, brown (7.5YR 4/3) exterior, moist; silty clay; moderate medium subangular blocky structure; very firm; slow permeability; 12 percent distinct dark brown (7.5YR 3/3), moist, clay films on vertical faces of peds; fragments; gradual boundary. Lab sample # KSUSS2428. patchy - phpvsfiid 172282; patchy - phpvsfiid 172282
    2Bt5—140 to 158 centimeters (55.1 to 62.2 inches);, brown (7.5YR 4/4) exterior, moist; silty clay; weak medium subangular blocky structure; very firm; slow permeability; 10 percent distinct dark brown (7.5YR 3/3), moist, clay films on vertical faces of peds; fragments; clear boundary. Lab sample # KSUSS2429. patchy - phpvsfiid 172281; patchy - phpvsfiid 172281
    3Cr—158 to 165 centimeters (62.2 to 65.0 inches); bedrock; fragments.