IDENTIFIERS

  • Current Taxon Name (Soil Name): Irwin
  • OSD
  • Series Extent
  • User Site ID: 88KS061004
  • User Pedon ID: 88KS061004
  • User Site Association ID: KS061 Geary County Type LocationsKansas State University Laboratory Pedons
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSU
  • Lab Pedon # - 88KS061004
  • NCSS Pedon Lab Data NASIS Record ID - 40959
  • 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: 38.8850327
  • Std. Longitude: -96.8258667
  • Datum: WGS84
  • Township: 13S
  • Range: 5E
  • Section: 25
  • PLSS Details: 2340 feet east and 320 feet north of the southwest corner
  • Location Description: 2340 ft. east and 320 ft. north of the southwest corner of sec. 25, T. 13 S., R. 5 E.
  • Map Unit: Id—IRWIN SILTY CLAY LOAM, 3 TO 7 PERCENT SLOPES4673—Irwin silty clay loam, 3 to 7 percent slopes
  • State: Kansas
  • County: KS061—Geary
  • MLRA: 76—Bluestem Hills
  • Non-MLRA Soil Survey Area: KS061—Geary County, Kansas
  • 7.5 Minute USGS Quad: 38096-H7—Wreford, Kansas

    • PEDON

  • Describers Name: W. Wehmueller
  • Current Taxonomic Class: Fine, mixed, superactive, mesic Pachic Argiustolls
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - Irwin
  • Classificaton Date - 10/20/2011
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - ustic
  • Sampled As Information:
  • Soil Name - Irwin
  • Classificaton Date - 9/6/1988
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: loess derived from mixed over unconsolidated sediments derived from mixed over residuum weathered from noncalcareous shale
  • Landscape: upland
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: backslope
  • Slope Position: upper third
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/6/1988 (actual site observation date)
  • Surface Cover Properties:
  • 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

    0—76

    33—193

    —-

    —-
    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

    —

    —

    408

    —

    0

    820

    —

    181

    11.8

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 15 centimeters (0.0 to 5.9 inches); very dark gray (10YR 3/1), very dark brown (10YR 2/2), moist; silty clay loam; strong fine and medium granular structure; slightly hard, friable; 15.0 fine and medium roots throughout; 5 percent distinct gray (10YR 5/1) skeletans on faces of peds; fragments; clear smooth boundary. Lab sample # KSUSS2480. discontinuous - phpvsfiid 23070; discontinuous - phpvsfiid 23070
    A2—15 to 33 centimeters (5.9 to 13.0 inches); very dark grayish brown (10YR 3/2), very dark brown (10YR 2/2), moist; silty clay loam; moderate medium subangular blocky structure; hard when dry, friable; 10.0 fine roots throughout; 5 percent distinct gray (10YR 5/1) skeletans on faces of peds; fragments; abrupt smooth boundary. Lab sample # KSUSS2481. discontinuous - phpvsfiid 23071; discontinuous - phpvsfiid 23071
    Bt1—33 to 58 centimeters (13.0 to 22.8 inches); dark grayish brown (10YR 4/2), very dark brown (10YR 2/2) and very dark grayish brown (10YR 3/2) crushed, moist; clay; strong medium subangular blocky structure; very hard, very firm; 5.0 very fine and fine roots throughout; 15 percent faint very dark brown (10YR 2/2) clay films on faces of peds; fragments; gradual smooth boundary. Lab sample # KSUSS2482. continuous - phpvsfiid 23072; continuous - phpvsfiid 23072
    Bt2—58 to 76 centimeters (22.8 to 29.9 inches); brown (10YR 4/3), dark brown (10YR 3/3), moist; clay; moderate medium subangular blocky structure; extremely hard, extremely firm; 5.0 very fine roots between peds; 10 percent faint very dark grayish brown (10YR 3/2) clay films on faces of peds; fragments; gradual smooth boundary. Lab sample # KSUSS2483. discontinuous - phpvsfiid 23073; discontinuous - phpvsfiid 23073
    Btk—76 to 104 centimeters (29.9 to 40.9 inches); brown (10YR 5/3), brown (10YR 4/3), moist; silty clay; moderate medium subangular blocky structure; very hard, very firm; 1.0 very fine roots throughout; 2 percent faint clay films on faces of peds; 2 percent fine and medium spherical carbonate concretions; fragments; gradual smooth boundary. Lab sample # KSUSS2484. discontinuous - phpvsfiid 23074; discontinuous - phpvsfiid 23074
    2Bt1—104 to 137 centimeters (40.9 to 53.9 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; silty clay loam; moderate medium subangular blocky structure; hard when dry, firm; 2 percent distinct clay films on faces of peds; fragments; clear smooth boundary. Lab sample # KSUSS2485. discontinuous - phpvsfiid 23075; discontinuous - phpvsfiid 23075
    2Bt2—137 to 193 centimeters (53.9 to 76.0 inches);, 10 percent dark grayish brown (10YR 4/2) and 20 percent brown (10YR 4/3) and 70 percent dark brown (7.5YR 3/4), moist; silty clay loam; weak fine subangular blocky structure; hard when dry, firm; 2 percent faint clay films on faces of peds; 1 percent by volume subangular 2-39-75 millimeter limestone, unspecified fragments; gradual smooth boundary. Lab sample # KSUSS2486. discontinuous - phpvsfiid 23076; discontinuous - phpvsfiid 23076
    3BC—193 to 277 centimeters (76.0 to 109.1 inches);, dark brown (7.5YR 3/4), moist; silty clay loam; weak fine subangular blocky structure; hard when dry, firm; 25 percent by volume subangular 2-39-75 millimeter shale, noncalcareous fragments. Lab sample # KSUSS2487