IDENTIFIERS

  • Current Taxon Name (Soil Name): Oska
  • OSD
  • Series Extent
  • User Site ID: S2015KS045100
  • User Pedon ID: S2015KS045100
  • Vegetation Plot ID: S2015KS045100
  • User Site Association ID: NEON_RO5_UKFS
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 16N0189
  • User Project ID: UKFS_006_NEON
  • Project Name: The University of Kansas Field Station
  • Print Date: 12/5/2025

    • 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: 39.0430600
  • Std. Longitude: -95.2028500
  • Datum: WGS84
  • Township: 12 S.
  • Range: 20 E.
  • Section: 4
  • Location Description: UKFS_004;11.3;43;40x40 SW marker;center of pit
  • Map Unit: 7461—Oska silty clay loam, 3 to 8 percent slopes, eroded
  • Country: US—United States
  • State: Kansas
  • County: KS045—Douglas
  • MLRA: 106—Nebraska and Kansas Loess-Drift Hills
  • Non-MLRA Soil Survey Area: KS045—Douglas County, Kansas
  • 7.5 Minute USGS Quad: 39095-A2—Midland, Kansas

    • PEDON

  • Describers Name: Bruce Evans
  • Current Taxonomic Class: Fine, smectitic, mesic Vertic Argiudolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: research site
  • Pedon Record Orgin: NASIS
  • Sampled As Information:
  • Soil Name - Oska
  • Taxonomic Class - Fine, smectitic, mesic Vertic Argiudolls
  • Taxon Kind - series
  • PSC - 19 to 57 cm.
  • Classificaton Date - 10/5/2015
  • Classifier - B. Evans
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - udic
  • Moisture SUBClass - udic
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from limestone
  • Landscape: upland
  • Landform: hillslope
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: summit
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: indurated limestone, unspecified at 57cm
  • Geology: Shawnee group .
  • Surface Fragments:
  • Benchmark Soil?: no
  • Plot #: 4
  • RaCA Information:
  • RaCA Site ID - UKFS_004
  • DSP Plot ID - SW
  • Plot Baseline Azimuth - 43
  • Plot Baseline Length - 11
  • Plot Width - 40
  • Plot/Site Set Up By - Center of pit
  • Plot or Site Recorder - Bruce Evans

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 9/25/2015 (actual site observation date)
  • Data Collector: Brian Nestor; Bruce Evans
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - hardwoods
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    CECU

    FRAXI

    GLTR

    JUVI

    MAPO

    QUERC

    RHGL

    ULMUS

    LAPPU

    Ceanothus cuneatus

    Fraxinus

    Gleditsia triacanthos

    Juniperus virginiana

    Maclura pomifera

    Quercus

    Rhus glabra

    Ulmus

    Lappula

    buckbrush

    ash

    honeylocust

    eastern redcedar

    Osage-orange

    oak

    smooth sumac

    elm

    stickseed

    tree

    tree

    tree

    tree

    tree

    tree

    tree

    tree

    forb

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    Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, lithic

    indurated

    57 -

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

    mollic epipedon

    argillic horizon

    lithic contact

    0—19

    19—57

    57—57

    —19—

    —38—

    —-
    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

    1

    —

    —

    316

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    180

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    A—0 to 19 centimeters (0.0 to 7.5 inches); very dark brown (10YR 2/2) interior silty clay loam; 32 percent clay; moderate fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; common (1.0) medium roots throughout and many (5.0) fine roots throughout and common (1.0) coarse roots throughout; fragments; noneffervescent, by hcl, unspecified; clear smooth boundary. Lab sample # 16N00544; moist when described; observed in pit, small
    Bt1—19 to 32 centimeters (7.5 to 12.6 inches); reddish brown (5YR 4/4) interior silty clay loam; 38 percent clay; moderate fine subangular blocky, and moderate medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; common (2.0) very fine roots throughout and common (2.0) fine roots throughout; 30 percent distinct reddish brown (5YR 4/4), moist, clay films on all faces of peds; fragments; noneffervescent, by hcl, unspecified; clear smooth boundary. Lab sample # 16N00545; moist when described; observed in pit, small
    Bt2—32 to 57 centimeters (12.6 to 22.4 inches); yellowish red (5YR 4/6) interior silty clay; 41 percent clay; moderate medium subangular blocky structure; hard, firm, very sticky, very plastic; common (1.0) very fine roots throughout and common (1.0) fine roots throughout; 40 percent distinct brown (10YR 5/3), moist, clay films on vertical faces of peds; 2 percent by volume nonflat subangular indurated 2-5-5 millimeter limestone, unspecified fragments observed by visual inspection method; noneffervescent, by hcl, unspecified; abrupt wavy boundary. Lab sample # 16N00546; moist when described; observed in pit, small
    R—57 to 200 centimeters (22.4 to 78.7 inches); bedrock; fragments.; observed in pit, small. limestone