IDENTIFIERS

  • Current Taxon Name (Soil Name): Irwin
  • OSD
  • Series Extent
  • User Site ID: 97KS041003
  • User Pedon ID: 97KS041003
  • User Site Association ID: Kansas State University Laboratory Pedons
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSU
  • Lab Pedon # - 97KS041003
  • NCSS Pedon Lab Data NASIS Record ID - 41120
  • Print Date: 9/24/2024

    • 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: 38.9642563
  • Std. Longitude: -97.1099319
  • Datum: WGS84
  • Township: 12S
  • Range: 3E
  • Section: 33
  • PLSS Details: NW1/4 SW1/4
  • Location Description: About 4 miles west and 0.5 miles north of Chapman, Kansas.
  • Map Unit: Ia—IRWIN SILTY CLAY LOAM, 1 TO 3 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 Argiustolls
  • 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 - Irwin
  • Taxonomic Class - Fine, smectitic, mesic Argiustolls
  • Classificaton Date - 9/18/1997
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Field Measured Properties: 140 cm of Depth to paleosol


    • SITE

  • Parent Material: loess derived from mixed and/or loess derived from mixed and/or residuum weathered from shale
  • Landscape: upland
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/18/1997 (actual site observation date)
  • Air Photo ID: 19
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Horizon Lab Results - 1
    Horizon Top Depth Bottom Depth Sample ID Data Collector Total Clay CaCO3 Clay Total Silt Fine Silt Co. Silt Total Sand Total Sand Method VC Sand Co. Sand Med. Sand Fine Sand VF Sand VF Sand Method Texture Class - Field Lab Rubbed Fiber Unrubbed Fiber pH H2O
    cm cm % % % % % % % % % % % % %

    Ap

    Bt1

    0

    10

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    2.9

    2.8

    2.1

    1.6

    4.2

    4.1

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    Pedon Horizon Lab Results - 2
    Horizon Top Depth Bottom Depth Sample ID pH CaCl2 pH NaF pH Ox Delta pH LL PL PI Atter. Samp. Cond. COLE Pot. Acidity Ca + Mg - Meh 2 K Ca + Mg - Sat. Paste KCl Extract. Acidity Base Sat. - Meh 2 CEC-7 CEC-8.2
    cm cm % % % cm/cm meq/100g cmol(+)/kg cmol(+)/kg mmol(+)/l cmol(+)/kg % cmol(+)/kg cmol(+)/kg

    Ap

    Bt1

    0

    10

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    Pedon Horizon Lab Results - 3
    Horizon Top Depth Bottom Depth Sample ID ECEC Phosphate P NO3-N EC EC Method EC 1:5 by volume CaCO3 Equiv. Equiv. Gypsum Na SAR Gypsum Req. Humic Color Fulvic Color Humic + Fulvic Color Al PI Pyro. Hue PyrO. Value Pyro. Chroma
    cm cm cmol(+)/kg mg/kg mg/kg dS/m dS/m % % mmol(+)/l % L-pcu/g L-pcu/g L-pcu/g %

    Ap

    Bt1

    0

    10

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    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    secondary carbonates

    paralithic contact

    0—43

    10—150

    65—98

    150—

    —43—

    —140—

    —33—

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    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

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    10

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    Ap—0 to 10 centimeters (0.0 to 3.9 inches);, very dark grayish brown (10YR 3/2) exterior, moist; silty clay loam; 9 percent sand; 57 percent silt; 34 percent clay; weak fine granular structure; hard when dry, firm; 6.0 fine roots throughout; fragments; 0.2 percent of percent coarse and very coarse sand; clear smooth boundary. Lab sample # KSUSS1415
    Bt1—10 to 27 centimeters (3.9 to 10.6 inches);, very dark grayish brown (10YR 3/2) exterior, moist; silty clay; 11 percent sand; 54 percent silt; 35 percent clay; moderate medium subangular blocky structure; very hard, very firm; 3.0 fine roots throughout; fragments; 0.30000001 percent of percent coarse and very coarse sand; clear smooth boundary. Lab sample # KSUSS1416
    Bt2—27 to 43 centimeters (10.6 to 16.9 inches);, dark brown (7.5YR 3/2) exterior and dark brown (7.5YR 3/3) interior, moist; silty clay; 6 percent sand; 54 percent silt; 40 percent clay; strong fine angular blocky structure; extremely hard, extremely firm*; 1.0 fine roots throughout; 15 percent distinct dark brown (7.5YR 3/2), moist, clay films on faces of peds; fragments; clear smooth boundary. Lab sample # KSUSS1417. continuous - phpvsfiid 21821; continuous - phpvsfiid 21821
    Bt3—43 to 65 centimeters (16.9 to 25.6 inches); brown (7.5YR 4/4) exterior, dark brown (7.5YR 3/4) exterior, moist; silty clay; 8 percent sand; 50 percent silt; 42 percent clay; moderate fine angular blocky structure; extremely hard, extremely firm*; 1.0 fine roots throughout; 5 percent distinct dark brown (7.5YR 3/3), moist, clay films on faces of peds; fragments; clear smooth boundary. Lab sample # KSUSS1418. discontinuous - phpvsfiid 21822; discontinuous - phpvsfiid 21822
    Btk—65 to 98 centimeters (25.6 to 38.6 inches); brown (7.5YR 4/4) exterior, dark brown (7.5YR 3/4) exterior, moist; silty clay loam; 13 percent sand; 51 percent silt; 36 percent clay; weak medium subangular blocky structure; very hard, very firm; 5 percent distinct dark brown (7.5YR 3/3), moist, clay films on faces of peds; 5 percent fine and medium irregular carbonate nodules between peds; fragments; clear smooth boundary. Lab sample # KSUSS1419. discontinuous - phpvsfiid 21823; discontinuous - phpvsfiid 21823
    Bt4—98 to 140 centimeters (38.6 to 55.1 inches); reddish brown (5YR 4/4) exterior, dark reddish brown (5YR 3/4) exterior, moist; silty clay loam; 10 percent sand; 52 percent silt; 38 percent clay; weak coarse subangular blocky structure; very hard, very firm; 1 percent distinct dark reddish brown (5YR 3/3), moist, clay films in root channels and/or pores; 2 percent fine irregular carbonate masses between peds; fragments; clear wavy boundary. Lab sample # KSUSS1420. discontinuous - phpvsfiid 21824; discontinuous - phpvsfiid 21824
    2Bt5—140 to 150 centimeters (55.1 to 59.1 inches);, 20 percent dark grayish brown (2.5Y 4/2) exterior and 30 percent dark grayish brown (10YR 4/2) exterior, moist; silty clay; 2 percent sand; 52 percent silt; 46 percent clay; moderate fine subangular blocky structure; very hard, very firm; 10 percent distinct very dark grayish brown (10YR 3/2) clay films on faces of peds; fragments; clear wavy boundary. Lab sample # KSUSS1421. discontinuous - phpvsfiid 21825; discontinuous - phpvsfiid 21825
    2Cr—150 to 180 centimeters (59.1 to 70.9 inches); fragments.