IDENTIFIERS

  • Current Taxon Name (Soil Name): Tunnison
  • OSD
  • Series Extent
  • User Site ID: S1981CA035006
  • User Pedon ID: 81CA035006
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 81P0698
  • NCSS Pedon Lab Data NASIS Record ID - 49542
  • Print Date: 4/23/2025

    • 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: 40.6632042
  • Std. Longitude: -120.4685440
  • Datum: WGS84
  • Township: 32N
  • Range: 13E
  • Section: 1
  • PLSS Details: 564 meters S and 274 meters E of NW corner
  • State: California
  • County: CA035—Lassen

    • PEDON

  • Describers Name: S. Borchard, S. Slusser, W. Lindsey, and T. Cook
  • Current Taxonomic Class: Very-fine, smectitic, mesic Aridic Haploxererts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 6
  • Correlated Information:
  • Soil Name - Tunnison
  • Classificaton Date - 2/1/2010
  • Moisture Class - xeric
  • Moisture Subclass - aridic (torric)
  • Sampled As Information:
  • Soil Name - Tunnison
  • Taxonomic Class - Very-fine, montmorillonitic, mesic Entic Chromoxer
  • Taxon Kind - series
  • Classificaton Date - 8/1/1981
  • Moisture Class - xeric
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: upland
  • Landform: upland slope
  • Drainage Class: well
  • Surface Fragments: 70.00 percent
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 8/1/1981 (actual site observation date)
  • Microrelief Elevation: 35
  • 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
  • Site Erosion Accelerated: water erosion
    • 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

    —

    —

    1585

    —

    225

    25

    —

    —

    —

    18

    2

    —

    —

    —

    —

    —

    —

    —

    —
    1A11—0 to 3 centimeters (0.0 to 1.2 inches); reddish brown (5YR 5/3) interior, brown (7.5YR 5/4) interior, moist; stony silty clay; strong fine and medium granular structure; slightly hard, very friable, very sticky, moderately plastic; 2.5 very fine roots; 5.5 very fine interstitial pores; 75-162-250 millimeter metamorphic, unspecified fragments and 250-425-600 millimeter metamorphic, unspecified fragments and 600-?-? millimeter metamorphic, unspecified fragments; very slight effervescence; slightly alkaline, pH 7.5, bromthymol blue; clear wavy boundary. Lab sample # 81P04175. common very fine roots
    1A12—3 to 13 centimeters (1.2 to 5.1 inches); reddish brown (5YR 5/3) interior, brown (7.5YR 5/4) interior, moist; clay; strong coarse angular blocky structure; hard, very friable, very sticky, moderately plastic; 0.5 very fine and fine roots and 2.5 very fine roots; 2.5 very fine interstitial pores; 55 percent nonintersecting slickensides on all faces of peds; fragments; very slight effervescence; slightly alkaline, pH 7.5, bromthymol blue; clear wavy boundary. Lab sample # 81P04175. many nonintersecting slickensides surface features on vertical and horizontal faces of peds; common very fine roots; few very fine and fine roots; continuous - phpvsfiid 215067; continuous - phpvsfiid 215067
    1A13—13 to 38 centimeters (5.1 to 15.0 inches); reddish brown (5YR 5/3) interior, reddish brown (5YR 5/4) interior, moist; clay; strong very coarse prismatic, and strong coarse prismatic structure; very hard, very friable, very sticky, very plastic; 0.5 very fine and fine roots; 2.5 very fine tubular pores; 55 percent nonintersecting slickensides on all faces of peds; fragments; very slight effervescence; slightly alkaline, pH 7.5, bromthymol blue; clear wavy boundary. Lab sample # 81P04176. many nonintersecting slickensides surface features on vertical and horizontal faces of peds; few very fine and fine roots; continuous - phpvsfiid 215068; continuous - phpvsfiid 215068
    1A14—38 to 69 centimeters (15.0 to 27.2 inches); reddish brown (5YR 5/3) interior, reddish brown (5YR 5/4) interior, moist; clay; moderate coarse prismatic, and moderate medium subangular blocky structure; very hard, friable, very sticky, very plastic; 0.5 very fine and fine roots and 2.5 medium roots; 2.5 very fine tubular pores; 55 percent clay films on faces of peds; fragments; very slight effervescence; slightly alkaline, pH 7.5, bromthymol blue; clear wavy boundary. Lab sample # 81P04177. many clay films surface features on faces of peds; few very fine and fine roots; common medium roots; continuous - phpvsfiid 215069; continuous - phpvsfiid 215069
    1AC—69 to 79 centimeters (27.2 to 31.1 inches); reddish brown (5YR 5/3) interior, reddish brown (5YR 4/3) interior, moist; clay; strong fine and medium angular blocky structure; hard, very friable, very sticky, very plastic; 0.5 very fine roots; 2.5 very fine tubular pores; fragments; very slight effervescence; slightly alkaline, pH 7.5, bromthymol blue; abrupt wavy boundary. Lab sample # 81P04178. Soft andesite weathered to medium and coarse plates 2 to 3 in.; few very fine roots
    1R1—79 to 97 centimeters (31.1 to 38.2 inches); reddish yellow (5YR 7/6) interior, yellowish red (5YR 5/8) interior, moist; weathered bedrock; massive; carbonates and silica present; fragments; abrupt wavy boundary. Lab sample # 81P04179. Hard consolidated andesite.
    1R2—97 to 107 centimeters (38.2 to 42.1 inches); unweathered bedrock; fragments. Lab sample # 81P04180