IDENTIFIERS

  • Current Taxon Name (Soil Name): Irwin
  • OSD
  • Series Extent
  • User Site ID: 93KS041001
  • User Pedon ID: 93KS041001
  • User Site Association ID: Kansas State University Laboratory Pedons
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSU
  • Lab Pedon # - 93KS041001
  • NCSS Pedon Lab Data NASIS Record ID - 41012
  • 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: 38.9635010
  • Std. Longitude: -97.1099472
  • Datum: WGS84
  • Township: 12S
  • Range: 3E
  • Section: 33
  • PLSS Details: 2500 ft. north and 500 ft. east of the southwest corner
  • Map Unit: Ib—IRWIN SILTY CLAY LOAM, 3 TO 7 PERCENT SLOPES
  • State: Kansas
  • County: KS041—Dickinson
  • MLRA: 75—Central Loess Plains
  • Non-MLRA Soil Survey Area: KS041—Dickinson County, Kansas
  • 7.5 Minute USGS Quad: 38097-H1—Chapman, Kansas

    • PEDON

  • Describers Name: W. Wehmueller
  • Current Taxonomic Class: Fine, smectitic, mesic Udertic 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 Udertic Argiustolls
  • PSC - 15 to 65 cm.
  • Classificaton Date - 9/20/1993
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 92 cm of Depth to discontinuity and 145 cm of Depth to paleosol


    • SITE

  • Parent Material: silty loess over clayey residuum weathered from clayey shale
  • Landscape: upland
  • Landform: hillslope
  • Slope Position: lower third
  • 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: 9/20/1993 (actual site observation date)
  • Air Photo ID: 19
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row 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—64

    15—145

    64—107

    221—230

    —64—

    —130—

    —43—

    —-
    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

    2.5

    —

    —

    375

    —

    270

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 15 centimeters (0.0 to 5.9 inches); dark grayish brown (10YR 4/2) exterior, very dark grayish brown (10YR 3/2) exterior, moist; silty clay loam; weak medium cloddy structure; extremely hard, extremely firm, very sticky, very plastic; fragments; neutral, pH 6.9, pH meter; abrupt smooth boundary. Lab sample # KSUSS0537; observed in trench
    Bt1—15 to 28 centimeters (5.9 to 11.0 inches); dark grayish brown (10YR 4/2) exterior, very dark grayish brown (10YR 3/2) exterior, moist; silty clay; strong fine and medium angular blocky structure; 5 percent distinct light brownish gray (10YR 6/2), dry, skeletans on vertical faces of peds and 15 percent distinct very dark brown (10YR 2/2), moist, organoargillans on all faces of peds; fragments; slightly alkaline, pH 7.8, pH meter; clear smooth boundary. Lab sample # KSUSS0538. KSU lab data 6.5% total sand, 45.8% clay, total carbon 0.8%.; discontinuous - phpvsfiid 51604; continuous - phpvsfiid 51605; discontinuous - phpvsfiid 51604; continuous - phpvsfiid 51605
    Bt2—28 to 41 centimeters (11.0 to 16.1 inches); dark grayish brown (10YR 4/2) exterior, very dark grayish brown (10YR 3/2) exterior and dark brown (10YR 3/3) crushed, moist; silty clay; strong medium and coarse angular blocky structure; 5 percent distinct light brownish gray (10YR 6/2), dry, skeletans on surfaces along root channels and 15 percent distinct very dark brown (10YR 2/2), moist, organoargillans on all faces of peds; fragments; moderately alkaline, pH 8.1, pH meter; gradual smooth boundary. Lab sample # KSUSS0539. KSU lab data 4.4% total sand, 45.2% clay, total carbon 0.7%.; discontinuous - phpvsfiid 51607; continuous - phpvsfiid 51606; discontinuous - phpvsfiid 51607; continuous - phpvsfiid 51606
    Bt3—41 to 63 centimeters (16.1 to 24.8 inches); brown (10YR 4/3) exterior, dark brown (10YR 3/3) exterior, moist; silty clay; strong medium and coarse subangular blocky structure; 2 percent distinct very dark brown (10YR 2/2), moist, organic stains on vertical faces of peds and 15 percent distinct very dark grayish brown (10YR 3/2), moist, clay films on all faces of peds; fragments; moderately alkaline, pH 8.2, pH meter; clear smooth boundary. Lab sample # KSUSS0540. KSU lab data 5.2% total sand, 41.4% clay, total carbon 0.5%.; continuous - phpvsfiid 51608; patchy - phpvsfiid 51609; continuous - phpvsfiid 51608; patchy - phpvsfiid 51609
    Btky1—63 to 76 centimeters (24.8 to 29.9 inches); brown (10YR 5/3) exterior, brown (10YR 4/3) exterior, moist; silty clay; moderate medium and coarse subangular blocky structure; 1 percent distinct very dark brown (10YR 2/2), moist, organic stains on vertical faces of peds and 15 percent distinct very dark grayish brown (10YR 3/2), moist, clay films on vertical faces of peds; 2 percent fine threadlike carbonate masses infused into matrix adjacent to pores and 2 percent fine threadlike gypsum masses infused into matrix adjacent to pores and 5 percent fine and medium spherical carbonate masses in matrix; fragments; slightly alkaline, pH 7.7, pH meter; gradual smooth boundary. Lab sample # KSUSS0541. KSU lab data 4.4% total sand, 42.1% clay, CCE8%, total carbon 0.6%.; continuous - phpvsfiid 51610; patchy - phpvsfiid 51611; continuous - phpvsfiid 51610; patchy - phpvsfiid 51611
    Btky2—76 to 91 centimeters (29.9 to 35.8 inches); pale brown (10YR 6/3) exterior, brown (10YR 4/3) crushed, moist; silty clay; weak medium and coarse subangular blocky structure; 12 percent distinct very dark grayish brown (10YR 3/2), moist, clay films on vertical faces of peds; 2 percent fine threadlike gypsum masses infused into matrix adjacent to pores and 2 percent fine threadlike carbonate masses infused into matrix adjacent to pores and 5 percent fine and medium spherical carbonate masses in matrix; fragments; slightly alkaline, pH 7.6, pH meter; clear smooth boundary. Lab sample # KSUSS0542. KSU lab data PSDA not determined because sample would not disperse due to gypsum, CCE 10%.; continuous - phpvsfiid 51612; continuous - phpvsfiid 51612
    2Btk—91 to 107 centimeters (35.8 to 42.1 inches); 50 percent grayish brown (10YR 5/2) exterior and 50 percent brown (10YR 5/3) exterior, 50 percent dark grayish brown (10YR 4/2) exterior and 50 percent brown (10YR 4/3) exterior, moist; silty clay loam; weak medium and coarse subangular blocky structure; 5 percent distinct dark brown (10YR 3/3), moist, clay films on vertical faces of peds; 5 percent fine and medium distinct irregular noncoherent cemented dark yellowish brown (10YR 4/6), moist, masses of oxidized iron infused into matrix along faces of peds; 5 percent fine threadlike carbonate masses lining pores; fragments; moderately alkaline, pH 8.1, pH meter; clear smooth boundary. Lab sample # KSUSS0543. KSU lab data 6.0% total sand, 39.1% clay, CCE 11.5%.; discontinuous - phpvsfiid 51613; discontinuous - phpvsfiid 51613
    2Bt—107 to 145 centimeters (42.1 to 57.1 inches); 50 percent brown (10YR 5/3) exterior and 50 percent dark brown (7.5YR 3/3) exterior, 50 percent dark brown (7.5YR 3/2) exterior and 50 percent brown (10YR 4/3) exterior, moist; silty clay loam; weak medium prismatic parts to weak medium subangular blocky structure; 2 percent distinct dark brown (10YR 3/3), moist, clay films on vertical faces of peds; 5 percent fine and medium distinct cylindrical noncoherent cemented dark yellowish brown (10YR 4/6), moist, masses of oxidized iron with diffuse boundaries lining pores; 1 percent fine threadlike carbonate masses lining pores; fragments; moderately alkaline, pH 8.0, pH meter; clear smooth boundary. Lab sample # KSUSS0544. KSU lab data 4.1% total sand, 42.3% clay.; discontinuous - phpvsfiid 51614; discontinuous - phpvsfiid 51614
    3BC—145 to 221 centimeters (57.1 to 87.0 inches); 60 percent olive (5Y 5/3) exterior and 40 percent pale olive (5Y 6/4) exterior, 60 percent olive (5Y 4/3) exterior and 40 percent olive (5Y 5/4) exterior, moist; silty clay loam; weak medium prismatic parts to weak medium subangular blocky structure; 2 percent fine and medium distinct cylindrical noncoherent cemented light olive gray (5Y 6/2), moist, iron depletions with clear boundaries infused into matrix adjacent to pores and 4 percent medium and coarse distinct cylindrical noncoherent cemented yellowish brown (10YR 5/6), moist, masses of oxidized iron in matrix surrounding redox depletions; 5 percent coarse spherical carbonate masses in matrix; fragments; moderately alkaline, pH 8.2, pH meter; clear wavy boundary. Lab sample # KSUSS0545. KSU lab data 3.4% total sand, 37.4% clay.
    3Cr—221 to 230 centimeters (87.0 to 90.6 inches); fragments.