IDENTIFIERS

  • Current Taxon Name (Soil Name): Twichell
  • OSD
  • Series Extent
  • Local Phase: silty clay loam
  • User Site ID: S1987OK007006
  • User Pedon ID: S1987OK007006
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - KSSL
  • Lab Pedon # - 87P0677
  • NCSS Pedon Lab Data NASIS Record ID - 59972
  • Print Date: 11/24/2024

    • 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: 36.5163889
  • Std. Longitude: -100.6116639
  • Datum: WGS84
  • Township: 1N
  • Range: 23E
  • Section: 29
  • PLSS Details: 182 meters N and 55 meters E or SW corner
  • Location Description: Beaver County, OK.
  • Country: US—United States
  • State: Oklahoma
  • County: OK007—Beaver
  • MLRA: 77A—Southern High Plains, Northern Part
  • MLRA Soil Survey Area: SC-WOD—Woodward, Oklahoma
  • Non-MLRA Soil Survey Area: OK007—Beaver County, Oklahoma
  • 7.5 Minute USGS Quad: 36100-E5—Elmwood, Oklahoma

    • PEDON

  • Describers Name: J.Frie, B.Wagner, C.Cail, J.Ford, G.Sample
  • Current Taxonomic Class: Fine, mixed, superactive, mesic Aridic Haplusterts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 6
  • Correlated Information:
  • Soil Name - Twichell (flagged as OSD)
  • PSC - 25 to 100 cm.
  • Classificaton Date - 6/3/2020
  • Classifier - Steven McGowen
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - ustic
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Pullman
  • Classificaton Date - 7/1/1987
  • Classifier - J.Frie, B.Wagner, C.Cail, J.Ford, G.Sample
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no
  • Certification Status: certified
  • QC Status: level 1
  • QA Status: not reviewed


    • SITE

  • Parent Material: Pleistocene silty and clayey calcareous loess
  • Landscape: high plains
  • Landform: loess plain
  • Geomorphic Component Flats: talf
  • Slope Complexity: simple
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Surface Fragments: 0.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/1/1987 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • Site Obs. Cover Kind 2 - row crop
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
  • Site Erosion Accelerated: water erosion
    • 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 % % % % % % % % % % % % %

    Btkss1

    Btkss2

    51

    76

    76

    102

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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

    Btkss1

    Btkss2

    51

    76

    76

    102

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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 %

    Btkss1

    Btkss2

    51

    76

    76

    102

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

    mollic epipedon

    slickensides

    0—102

    28—102

    —102—

    —74—
    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

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    867

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    90

    530

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    14

    26

    3

    15

    27

    4

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    004298

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    Ap—0 to 15 centimeters (0.0 to 5.9 inches); grayish brown (10YR 5/2) interior, very dark grayish brown (10YR 3/2) interior, moist; silty clay loam; 12 percent sand; 56 percent silt; 32 percent clay; weak fine and medium granular structure; hard, friable; 0.5 very fine and fine roots; fragments; noneffervescent, by hcl, unspecified; neutral, pH 7.0, hellige-truog; abrupt smooth boundary. Lab sample # 87P03617; observed in trench. few very fine and fine roots
    A—15 to 28 centimeters (5.9 to 11.0 inches); grayish brown (10YR 5/2) interior, very dark brown (10YR 2/2) interior, moist; silty clay loam; 13 percent sand; 53 percent silt; 34 percent clay; weak fine and medium subangular blocky structure; very hard, firm; 0.5 very fine and fine roots; fragments; noneffervescent, by hcl, unspecified; slightly alkaline, pH 7.8, hellige-truog; clear smooth boundary. Lab sample # 87P03618; observed in trench. few very fine and fine roots
    Btss—28 to 51 centimeters (11.0 to 20.1 inches); grayish brown (10YR 5/2) interior, very dark grayish brown (10YR 3/2) interior, moist; silty clay; 8 percent sand; 50 percent silt; 42 percent clay; strong medium and coarse prismatic parts to moderate fine and medium angular blocky structure; extremely hard, very firm; 0.5 very fine and fine roots; 35 percent prominent slickensides (pedogenic) on faces of peds and 35 percent distinct very dark brown (10YR 2/2) organoargillans on faces of peds and 35 percent distinct clay films on faces of peds; fragments; slight effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; clear wavy boundary. Lab sample # 87P03619; observed in trench. Silty clay loam in cracks.; common intersecting slickensides surface features on faces of peds; common clay films surface features on faces of peds; few very fine and fine roots; effervescence is continuous; continuous - phpvsfiid 354302; continuous - phpvsfiid 354303; continuous - phpvsfiid 467231; continuous - phpvsfiid 354302; continuous - phpvsfiid 354303; continuous - phpvsfiid 467231
    Btkss1—51 to 76 centimeters (20.1 to 29.9 inches); brown (7.5YR 5/2) interior, dark brown (7.5YR 3/2) interior, moist; silty clay; 7 percent sand; 53 percent silt; 40 percent clay; strong medium and coarse prismatic parts to moderate medium angular blocky structure; extremely hard, very firm; 0.5 very fine and fine roots; 15 percent faint carbonate coats on vertical faces of peds and 35 percent prominent slickensides (pedogenic) on faces of peds and 35 percent distinct very dark brown (10YR 2/2) organoargillans on faces of peds and 35 percent distinct clay films on faces of peds; 1 percent fine irregular carbonate concretions; fragments; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 87P03620; observed in trench. Silty clay loam in cracks.; few fine carbonate concretions concentrations; common intersecting slickensides surface features on faces of peds; common clay films surface features on faces of peds; few lime or carbonate coats surface features on vertical faces of peds; few very fine and fine roots; effervescence is continuous; discontinuous - phpvsfiid 354306; continuous - phpvsfiid 467233; continuous - phpvsfiid 354304; continuous - phpvsfiid 354305; discontinuous - phpvsfiid 354306; continuous - phpvsfiid 467233; continuous - phpvsfiid 354304; continuous - phpvsfiid 354305
    Btkss2—76 to 102 centimeters (29.9 to 40.2 inches); brown (7.5YR 5/2) interior, dark brown (7.5YR 3/2) interior, moist; silty clay loam; 11 percent sand; 51 percent silt; 38 percent clay; moderate medium and coarse prismatic parts to moderate medium subangular blocky structure; very hard, firm; 0.5 very fine and fine roots; 15 percent distinct nonintersecting slickensides on faces of peds and 35 percent prominent very dark brown (10YR 2/2) organoargillans on vertical faces of peds and 35 percent prominent clay films on faces of peds; 1 percent fine threadlike carbonate masses and 10 percent fine and medium irregular carbonate concretions; fragments; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 87P03621; observed in trench. common medium carbonate concretions concentrations; common fine soft masses of carbonate concentrations; few nonintersecting slickensides surface features on faces of peds; few organic coats surface features on vertical faces of peds; common clay films surface features on faces of peds; few very fine and fine roots; effervescence is continuous; discontinuous - phpvsfiid 354307; continuous - phpvsfiid 354308; continuous - phpvsfiid 467235; discontinuous - phpvsfiid 354307; continuous - phpvsfiid 354308; continuous - phpvsfiid 467235
    Btk1—102 to 137 centimeters (40.2 to 53.9 inches); light brown (7.5YR 6/4) interior, brown (7.5YR 4/4) interior, moist; clay loam; 26 percent sand; 39 percent silt; 36 percent clay; moderate medium and coarse prismatic parts to moderate medium subangular blocky structure; hard, firm; 0.5 very fine roots; 15 percent distinct very dark brown (10YR 2/2) organoargillans on vertical faces of peds and 55 percent prominent clay films on faces of peds; 1 percent fine and medium irregular carbonate concretions and 25 percent medium threadlike carbonate masses; fragments; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 87P03622; observed in trench. many medium carbonate concretions concentrations; many medium soft masses of carbonate concentrations; many clay films surface features on faces of peds; few organic coats surface features on vertical faces of peds; few very fine roots; effervescence is continuous; continuous - phpvsfiid 354310; patchy - phpvsfiid 354311; continuous - phpvsfiid 354310; patchy - phpvsfiid 354311
    Btk2—137 to 160 centimeters (53.9 to 63.0 inches); brown (7.5YR 5/2) interior, dark brown (7.5YR 3/2) interior, moist; silty clay loam; 10 percent sand; 54 percent silt; 36 percent clay; moderate medium prismatic parts to moderate medium subangular blocky structure; hard, friable; 15 percent distinct very dark brown (10YR 2/2) organoargillans on vertical faces of peds and 15 percent faint carbonate coats on vertical faces of peds and 55 percent prominent clay films on faces of peds; 1 percent fine and medium irregular carbonate concretions and 1 percent fine and medium irregular carbonate masses and 1 percent fine and medium threadlike carbonate masses; fragments; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; clear smooth boundary. Lab sample # 87P03623; observed in trench. few medium carbonate concretions concentrations; few medium soft masses of carbonate concentrations; many clay films surface features on faces of peds; few organic coats surface features on vertical faces of peds; few lime or carbonate coats surface features on vertical faces of peds; effervescence is continuous; continuous - phpvsfiid 354312; patchy - phpvsfiid 354313; patchy - phpvsfiid 354314; continuous - phpvsfiid 354312; patchy - phpvsfiid 354313; patchy - phpvsfiid 354314
    Btk3—160 to 183 centimeters (63.0 to 72.0 inches); brown (7.5YR 5/4) interior, brown (7.5YR 5/4) interior, moist; silty clay loam; 12 percent sand; 56 percent silt; 33 percent clay; moderate medium prismatic parts to moderate medium subangular blocky structure; hard, friable; 15 percent distinct clay films on faces of peds and 35 percent distinct carbonate coats on faces of peds and 35 percent distinct carbonate coats in root channels and/or pores; 1 percent fine threadlike carbonate masses; fragments; strong effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog; gradual smooth boundary. Lab sample # 87P03624; observed in trench. few fine soft masses of carbonate concentrations; few clay films surface features on faces of peds; common lime or carbonate coats surface features on faces of peds; common lime or carbonate coats surface features in root channels and/or pores; effervescence is continuous; discontinuous - phpvsfiid 354316; patchy - phpvsfiid 354315; discontinuous - phpvsfiid 354317; discontinuous - phpvsfiid 354316; patchy - phpvsfiid 354315; discontinuous - phpvsfiid 354317
    Btk4—183 to 203 centimeters (72.0 to 79.9 inches); reddish brown (5YR 5/4) interior, reddish brown (5YR 4/3) interior, moist; silty clay loam; 15 percent sand; 47 percent silt; 38 percent clay; moderate medium prismatic parts to moderate medium subangular blocky structure; hard, friable; 15 percent distinct clay films on faces of peds and 15 percent distinct carbonate coats on vertical faces of peds and 15 percent faint organic stains on vertical faces of peds; 1 percent fine threadlike carbonate masses; fragments; slight effervescence, by hcl, unspecified; moderately alkaline, pH 8.0, hellige-truog. Lab sample # 87P03625; observed in trench. few fine soft masses of carbonate concentrations; few clay films surface features on faces of peds; few lime or carbonate coats surface features on vertical faces of peds; few organic coats surface features on vertical faces of peds; effervescence is discontinuous; patchy - phpvsfiid 354318; discontinuous - phpvsfiid 354319; patchy - phpvsfiid 354320; patchy - phpvsfiid 354318; discontinuous - phpvsfiid 354319; patchy - phpvsfiid 354320