IDENTIFIERS

  • Current Taxon Name (Soil Name): Irwin
  • OSD
  • Series Extent
  • User Site ID: 89KS161044
  • User Pedon ID: 89KS161044
  • User Site Association ID: Fort Riley LCTA
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Pedon # - 90P0079
  • NCSS Pedon Lab Data NASIS Record ID - 62012
  • Print Date: 11/12/2024

    • 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: 39.1503083
  • Std. Longitude: -96.7983665
  • Datum: WGS84
  • Township: 10 S
  • Range: 6 E
  • Section: 30
  • PLSS Details: 1300 feet west and 1500 feet north of the southeast corner
  • State: Kansas
  • County: KS161—Riley
  • MLRA: 76—Bluestem Hills
  • Non-MLRA Soil Survey Area: KS161—Riley County, Kansas
  • 7.5 Minute USGS Quad: 39096-B7—Fort Riley NE, Kansas

    • PEDON

  • Describers Name: Fortner, J., Watt, C., Wehmueller, W.
  • Current Taxonomic Class: Fine, mixed, superactive, mesic Pachic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: research site
  • Pedon Record Orgin: Converted from PDP 3.x
  • Sampled As Information:
  • Soil Name - Irwin
  • Taxonomic Class - Fine, mixed, superactive, mesic Pachic Argiustolls
  • Taxon Kind - series
  • PSC - 8 to 58 cm.
  • Classificaton Date - 10/3/1989
  • Moisture Class - ustic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: ridge
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Position: upper third
  • Slope Shape Across: linear
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/3/1989 (actual site observation date)
  • Air Photo ID: 29
  • 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—48

    8—175

    —48—

    —167—
    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

    —

    —

    390

    —

    135

    0

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Ap—0 to 8 centimeters (0.0 to 3.1 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; silty clay loam; strong very fine and fine subangular blocky structure; very hard, firm; 3.0 medium roots throughout and 10.0 fine roots throughout; fragments; clear smooth boundary. 90P0533; at base of horizon is moderate platy structure due to compaction, bulk density sample collected
    Bt1—8 to 18 centimeters (3.1 to 7.1 inches);, 50 percent very dark grayish brown (10YR 3/2) and 50 percent dark brown (10YR 3/3), moist; silty clay; moderate medium and coarse subangular blocky, and moderate fine subangular blocky structure; extremely hard, very firm; 1.0 medium roots between peds and 10.0 fine roots between peds; 45 percent distinct very dark grayish brown (10YR 3/2) clay films on faces of peds; 1 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; clear smooth boundary. 90P0534; bulk density sample collected; continuous - phpvsfiid 22765; continuous - phpvsfiid 22765
    Bt2—18 to 33 centimeters (7.1 to 13.0 inches);, dark brown (7.5YR 3/2), moist; silty clay; moderate medium subangular blocky structure; extremely hard, very firm; 1.0 fine and medium roots between peds; 60 percent distinct dark brown (10YR 3/3) clay films on faces of peds and in pores; 2 percent by volume angular 2-39-75 millimeter limestone, cherty fragments. 90P0535; few streaks 20 mm. wide filled with 10YR 3/2 silty clay loam material, the 17 to 49 cm layer is considered one horizon but was separated at 33 cm and sampled separately; continuous - phpvsfiid 22766; continuous - phpvsfiid 22766
    Bt3—33 to 48 centimeters (13.0 to 18.9 inches);, dark brown (7.5YR 3/2), moist; silty clay; moderate medium subangular blocky structure; extremely hard, very firm; 1.0 fine and medium roots between peds; 60 percent distinct dark brown (10YR 3/3) clay films on faces of peds; 2 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; gradual wavy boundary. 90P0536; collected thin sections and bulk density samples; continuous - phpvsfiid 22767; continuous - phpvsfiid 22767
    Bt4—48 to 86 centimeters (18.9 to 33.9 inches);, dark brown (7.5YR 3/4), moist; clay; moderate medium subangular blocky structure; extremely hard, very firm; 1.0 fine roots between peds; 45 percent distinct dark brown (7.5YR 3/2) iron stains on faces of peds; 5 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; clear wavy boundary. 90P0537; few krotovina 80-150 mm in diameter filled with 10YR 4/3 material, chert fragments are as large as 1 inch in diameter, bulk density samples collected; discontinuous - phpvsfiid 22768; discontinuous - phpvsfiid 22768
    2Btb1—86 to 107 centimeters (33.9 to 42.1 inches);, dark brown (7.5YR 3/2) exterior and dark brown (7.5YR 3/4) crushed, moist; silty clay; weak medium prismatic, and moderate fine and medium subangular blocky structure; very hard, very firm; 1.0 very fine roots between peds; 1.0 tubular pores; 45 percent distinct very dark brown (10YR 2/2) clay films on faces of peds; 5 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; abrupt wavy boundary. 90P0538; collected thin sections and bulk density samples; continuous - phpvsfiid 22769; continuous - phpvsfiid 22769
    3Btb2—107 to 130 centimeters (42.1 to 51.2 inches);, 30 percent strong brown (7.5YR 5/6) and 70 percent brown (7.5YR 4/4), moist; very gravelly silty clay; moderate medium subangular blocky structure; very hard, very firm; 30 percent distinct dark brown (7.5YR 3/2) clay films on faces of peds and 30 percent distinct manganese or iron-manganese stains on faces of peds; 50 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; clear wavy boundary. 90P0539; thin sections collected, the less than 3/4 inch fraction was 33 lbs., the 3/4 to 3 inch fraction weighed 2 lbs.; discontinuous - phpvsfiid 22771; continuous - phpvsfiid 22770; discontinuous - phpvsfiid 22771; continuous - phpvsfiid 22770
    4Btkb3—130 to 175 centimeters (51.2 to 68.9 inches); clay loam; moderate fine subangular blocky structure; very hard, firm; 10 percent distinct clay films on rock fragments; 15 percent coarse and very coarse irregular carbonate masses; 15 percent by volume angular 2-39-75 millimeter shale, unspecified fragments and 25 percent by volume angular 2-39-75 millimeter limestone, unspecified fragments and 25 percent by volume angular 2-39-75 millimeter limestone, cherty fragments; strong effervescence; clear wavy boundary. 90P0540; highly mixed yellowish and red colors, the less than 3/4 inch fraction weighed 35 lbs., the 3/4 to 3 inch fraction weighed 7 lbs.; patchy - phpvsfiid 22772; patchy - phpvsfiid 22772
    5Cr—175 to 229 centimeters (68.9 to 90.2 inches); fragments. 90P0542;
    5BC—175 to 231 centimeters (68.9 to 90.9 inches); light gray (2.5Y 7/2), olive yellow (2.5Y 6/6), moist; silty clay loam; moderate thin platy, and moderate very fine and fine subangular blocky structure; hard when dry, firm; 22 percent very coarse and extremely coarse carbonate masses; 30 percent by volume angular 2-39-75 millimeter shale, unspecified fragments. 90P0541; bulk density sample collected, shale fragments up to 3 cm. in diameter and 5Y 4/4 in color