IDENTIFIERS

  • Current Taxon Name (Soil Name): westill
  • OSD
  • Series Extent
  • User Site ID: ok057-WtlA-westill-1
  • User Pedon ID: s1997ok-057-004 westill
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - KSSL
  • Lab Pedon # - 97P0502
  • NCSS Pedon Lab Data NASIS Record ID - 10185
  • Print Date: 2/17/2025

    • 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: 34.6737137
  • Std. Longitude: -99.8251038
  • Datum: WGS84
  • Township: 2N
  • Range: 25W
  • Section: 4
  • PLSS Details: 2150 feet north and 150 feet west of the southeast corner
  • Map Unit: 55—Tillman clay loam, 0 to 1 percent slopes55—Westill clay loam, 0 to 1 percent slopesWtlA—Westill clay loam, 0 to 1 percent slopes
  • Country: US—United States
  • State: Oklahoma
  • County: OK057—Harmon
  • MLRA: 78B—Central Rolling Red Plains, Western Part
  • Regional Office: SC—South Central
  • Non-MLRA Soil Survey Area: OK057—Harmon County, Oklahoma
  • 7.5 Minute USGS Quad: 34099-F7—Gould, Oklahoma

    • PEDON

  • Describers Name: Scott Keenan, Tom Reinsch, Clay Salisbury Richard Gelnar Dwaine Gelnar Charles Cail Dennis Ressel
  • Current Taxonomic Class: Fine, mixed, active, thermic Vertic Argiustolls
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Correlated Information:
  • Soil Name - westill
  • PSC - 13 to 63 cm.
  • Classificaton Date - 1/31/2012
  • Soil Taxonomic Edition - eighth edition
  • Moisture Class - ustic
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - westill
  • Classificaton Date - 7/5/1997
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: calcareous clayey alluvium over residuum weathered from clayey shale
  • Landscape: alluvial plain
  • Landform: paleoterrace
  • Geomorphic Component Terraces: tread
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: noncoherent shale, clayey with 10 to <45
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/5/1997 (actual site observation date)
  • Air Photo ID: PSS#19
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - close-grown crop
  • 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

    Ap

    Bt1

    Bt1

    Bt2

    Bt2

    Btkss1

    Btkss1

    Btkss2

    Btkss2

    2C

    2C

    0

    0

    13

    13

    39

    39

    61

    61

    101

    101

    140

    140

    13

    13

    39

    39

    61

    61

    101

    101

    140

    140

    178

    178

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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

    Ap

    Bt1

    Bt1

    Bt2

    Bt2

    Btkss1

    Btkss1

    Btkss2

    Btkss2

    2C

    2C

    0

    0

    13

    13

    39

    39

    61

    61

    101

    101

    140

    140

    13

    13

    39

    39

    61

    61

    101

    101

    140

    140

    178

    178

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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

    Ap

    Bt1

    Bt1

    Bt2

    Bt2

    Btkss1

    Btkss1

    Btkss2

    Btkss2

    2C

    2C

    0

    0

    13

    13

    39

    39

    61

    61

    101

    101

    140

    140

    13

    13

    39

    39

    61

    61

    101

    101

    140

    140

    178

    178

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    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

    ec meter, saturated paste

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    1

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    7

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    10

    13

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

    mollic epipedon

    argillic horizon

    0—39

    13—140

    —-

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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

    0.2

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    497

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    584

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    208

    16.1

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    Ap—0 to 13 centimeters (0.0 to 5.1 inches); reddish brown (5YR 4/3), dark reddish brown (5YR 3/3), moist; clay loam; 34 percent clay; moderate fine and medium subangular blocky parts to moderate fine and medium granular structure; hard when dry, very friable; 2.0 very fine and fine roots throughout; 6.0 very fine high-continuity interstitial and tubular pores; fragments; very slight effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; abrupt smooth boundary.; observed in trench
    Bt1—13 to 39 centimeters (5.1 to 15.4 inches); dark reddish gray (5YR 4/2), dark reddish brown (5YR 3/2), moist; clay; 43 percent clay; moderate fine and medium angular blocky structure; very hard, friable; 2.0 very fine roots throughout; 4.0 very fine moderate-continuity interstitial and tubular pores; 15 percent distinct clay films on faces of peds; fragments; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary.; observed in trench. The upper 4 inches of this horizon is a compacted plow pan.; patchy - phpvsfiid 94227; patchy - phpvsfiid 94227
    Bt2—39 to 61 centimeters (15.4 to 24.0 inches); reddish brown (5YR 4/4), dark reddish brown (5YR 3/4), moist; clay; 44 percent clay; weak medium prismatic parts to moderate fine and medium angular blocky structure; extremely hard, firm; 0.5 very fine roots throughout; 4.0 very fine high-continuity interstitial and tubular pores; 15 percent pressure faces and 40 percent distinct clay films on faces of peds; 1 percent fine and medium carbonate concretions; fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; clear smooth boundary.; observed in trench. Cracks extending through the horizon are filled with darker material from above.; discontinuous - phpvsfiid 93449; discontinuous - phpvsfiid 93449
    Btkss1—61 to 101 centimeters (24.0 to 39.8 inches); reddish brown (5YR 4/4), dark reddish brown (5YR 3/4), moist; clay; 47 percent clay; weak medium prismatic parts to moderate medium angular blocky, and strong medium angular blocky structure; extremely hard, firm; 0.1 very fine roots throughout; 0.5 very fine low-continuity interstitial and tubular pores; 15 percent slickensides (pedogenic) and 40 percent distinct clay films on faces of peds and 40 percent pressure faces; 2 percent fine iron-manganese masses; 4 percent fine and medium carbonate concretions and 1 percent fine and medium carbonate masses; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary.; observed in trench. Cracks extending through the horizon are filled with darker material from above.; discontinuous - phpvsfiid 93451; discontinuous - phpvsfiid 93451
    Btkss2—101 to 140 centimeters (39.8 to 55.1 inches); 97 percent reddish brown (5YR 5/3) and 3 percent light greenish gray (5GY 7/1), 97 percent reddish brown (5YR 4/3) and 3 percent greenish gray (5GY 6/1), moist; silty clay; 44 percent clay; weak medium prismatic parts to moderate medium angular blocky, and strong medium angular blocky structure; extremely hard, firm; 0.1 very fine roots throughout; 0.5 very fine low-continuity interstitial and tubular pores; 10 percent slickensides (pedogenic) and 30 percent pressure faces and 40 percent distinct clay films on faces of peds; 2 percent fine and medium carbonate masses and 2 percent fine and medium carbonate concretions; fragments; violent effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary.; observed in trench. Cracks extending through the horizon are filled with darker material from above.; discontinuous - phpvsfiid 93454; discontinuous - phpvsfiid 93454
    2C—140 to 178 centimeters (55.1 to 70.1 inches); 90 percent reddish brown (5YR 4/4) and 10 percent light greenish gray (5GY 7/1), 90 percent dark reddish brown (5YR 3/4) and 10 percent greenish gray (5GY 6/1), moist; silty clay; 42 percent clay; massive; very hard, firm; 10 percent distinct manganese or iron-manganese stains on rock fragments; 1 percent fine and medium gypsum masses at top of horizon; 30 percent by volume angular 2-39-75 millimeter shale, clayey fragments; strong effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary.; observed in trench. Cracks extend into the horizon and are filled with darker material from above.
    2Cd—178 to 103 centimeters (70.1 to 40.6 inches); 90 percent reddish brown (5YR 4/4) and 10 percent light greenish gray (5GY 7/1), 90 percent dark reddish brown (5YR 3/4) and 10 percent greenish gray (5GY 6/1), moist; bedrock; noncoherent; high excavation difficulty; fragments; slight effervescence, by hcl, 1n; moderately alkaline, pH 8.0, hellige-truog.; observed in trench