IDENTIFIERS

  • Current Taxon Name (Soil Name): TWICKENHAM
  • OSD
  • Series Extent
  • User Site ID: S1998OR069004
  • User Pedon ID: S1998OR069004
  • Vegetation Plot ID: S1998OR069004
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 99P0239
  • NCSS Pedon Lab Data NASIS Record ID - 11098
  • Print Date: 11/23/2024

    • 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: 44.9188881
  • Std. Longitude: -120.4405594
  • Datum: WGS84
  • Location Description: 3/4 miles west of Camp Hancock
  • State: Oregon
  • County: OR069—Wheeler
  • MLRA: 10—Central Rocky and Blue Mountain Foothills
  • MLRA Soil Survey Area: NW-RED—Redmond, Oregon
  • Non-MLRA Soil Survey Area: OR677—Wheeler County Area, Oregon
  • 7.5 Minute USGS Quad: 44120-H4—Clarno, Oregon

    • PEDON

  • Describers Name: Stan Winther
  • Current Taxonomic Class: Fine, montmorillonitic, mesic Vertic Paleargids
  • Current Taxon Kind: series
  • Pedon Type: representative pedon for component
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 4
  • Correlated Information:
  • Soil Name - TWICKENHAM
  • Classificaton Date - 2/1/2010
  • Moisture Class - aridic (torric)
  • Sampled As Information:
  • Soil Name - Twickenham
  • Taxonomic Class - Fine, smectitic, mesic Vertic Paleargid
  • Taxon Kind - series
  • Classificaton Date - 7/22/1998
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 7/22/1998 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • 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

    ACHNA

    Achnatherum

    needlegrass

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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

    9

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    518

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    180

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    A—0 to 15 centimeters (0.0 to 5.9 inches); brown (10YR 4/3) exterior, light brownish gray (10YR 6/2) exterior, dry; loam; weak medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; 80.0 very fine roots and 8.0 fine roots; 15.0 very fine and 9.0 fine pores; 5 percent by volume 2-39-75 millimeter tuff, acidic fragments; moderately alkaline, pH 8.2, hellige-truog; abrupt smooth boundary. Lab sample # 99P01239
    2Bt1—15 to 33 centimeters (5.9 to 13.0 inches); dark reddish brown (5YR 3/3) exterior, reddish brown (5YR 4/3) exterior, dry; clay; moderate medium and coarse angular blocky structure; very hard, very firm, very sticky, very plastic; 4.0 fine roots; 80.0 very fine and 5.0 fine pores; 75 percent prominent clay films on faces of peds; 10 percent by volume 2-39-75 millimeter tuff, acidic fragments; moderately alkaline, pH 8.3, hellige-truog; clear smooth boundary. Lab sample # 99P01240. discontinuous - phpvsfiid 202767; discontinuous - phpvsfiid 202767
    3Bt2—33 to 48 centimeters (13.0 to 18.9 inches); brown (7.5YR 4/3) exterior, brown (7.5YR 5/4) exterior, dry; silty clay loam; moderate medium and coarse angular blocky structure; hard when dry, firm, moderately sticky, moderately plastic; 20.0 very fine pores; faint clay films on faces of peds; 10 percent by volume 2-39-75 millimeter tuff, acidic fragments; moderately alkaline, pH 8.4, hellige-truog; clear wavy boundary. Lab sample # 99P01241. discontinuous - phpvsfiid 202768; discontinuous - phpvsfiid 202768
    3Bk—48 to 102 centimeters (18.9 to 40.2 inches); brown (7.5YR 4/4) exterior, light brown (7.5YR 6/4) exterior, dry; very gravelly clay; moderate medium subangular blocky structure; hard when dry, firm, very sticky, very plastic; 5.0 very fine pores; distinct carbonate coats on rock fragments; 10 percent by volume 75-162-250 millimeter tuff, acidic fragments and 30 percent by volume 2-39-75 millimeter unspecified fragments; strongly alkaline, pH 8.8, hellige-truog. Lab sample # 99P01242. continuous - phpvsfiid 202769; continuous - phpvsfiid 202769