IDENTIFIERS

  • Current Taxon Name (Soil Name): Supan
  • OSD
  • Series Extent
  • User Site ID: S1977-CA-55-044x
  • User Pedon ID: 77-CA-55-044x
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - UCDAVIS
  • Lab Pedon # - UCD7755044
  • NCSS Pedon Lab Data NASIS Record ID - 42351
  • 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: 37.9912687
  • Std. Longitude: -120.3084072
  • Datum: WGS84
  • Township: R.2N
  • Range: 15E
  • Section: 27
  • Map Unit: 3021—Iron Mountain-Crozier-Rock outcrop complex, 15 to 60 percent slopes
  • State: California
  • County: CA109—Tuolumne
  • MLRA: 22A—Sierra Nevada and Tehachapi Mountains
  • Non-MLRA Soil Survey Area: CA630—Central Sierra Foothills Area, California, Parts of Calaveras and Tuolumne Counties
  • 7.5 Minute USGS Quad: 37120-H3—Standard, California

    • PEDON

  • Describers Name: NRP, BFS
  • Current Taxonomic Class: Coarse-loamy, mixed, superactive, mesic Pachic Ultic Haploxerolls
  • Current Taxon Kind: taxadjunct
  • Pedon Type: not classified to current taxon name
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Supan
  • PSC - 28 to 100 cm.
  • Classificaton Date - 10/6/2017
  • Classifier - Andrew Brown
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - SUPAN
  • Taxonomic Class - Coarse-loamy, mixed, mesic Pachic Ultic Haploxerolls
  • Classificaton Date - 3/2/2009
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: RES
  • Slope Complexity: complex
  • Slope Shape Down: convex
  • Drainage Class: well
  • Bedrock: tuff, unspecified
  • Geology: Basic Volcanic Tuff Breccia formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 3/2/2009 (entry creation 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
    • Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    3—79

    —76—
    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

    45

    —

    —

    899

    —

    0

    864

    —

    —

    11.7

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    Oi—0 to 3 centimeters (0.0 to 1.2 inches); fragments. Lab sample # UCD03962
    A1—3 to 8 centimeters (1.2 to 3.1 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; gravelly loam; 46 percent sand; 38 percent silt; 16 percent clay; moderate very fine granular structure; soft, very friable, nonsticky, slightly plastic; 21.0 very fine roots throughout and 21.0 roots throughout; 21.0 very fine irregular and 21.0 fine irregular pores; 15 percent by volume nonflat subangular indurated 2-39-75 millimeter andesite fragments observed by visual inspection method; slightly acid, pH 6.5; abrupt smooth boundary. Lab sample # UCD03963
    A2—8 to 28 centimeters (3.1 to 11.0 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; gravelly loam; 45 percent sand; 39 percent silt; 16 percent clay; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, slightly plastic; 21.0 very fine roots throughout and 21.0 medium roots throughout and 21.0 fine roots throughout and 21.0 roots throughout; 3.0 medium tubular and 0.5 fine irregular and 3.0 fine tubular pores; 27 percent by volume nonflat subangular indurated 2-39-75 millimeter andesite fragments observed by visual inspection method; slightly acid, pH 6.2; clear smooth boundary. Lab sample # UCD03964
    AB—28 to 44 centimeters (11.0 to 17.3 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; gravelly loam; 45 percent sand; 39 percent silt; 16 percent clay; massive; slightly hard, friable, slightly sticky, slightly plastic; 3.0 medium roots throughout and 3.0 fine roots throughout; 3.0 medium tubular and 3.0 fine tubular pores; 16 percent by volume nonflat subangular indurated 2-39-75 millimeter andesite fragments observed by visual inspection method; slightly acid, pH 6.1; clear smooth boundary. Lab sample # UCD03965
    Bt1—44 to 59 centimeters (17.3 to 23.2 inches); dark grayish brown (10YR 4/2), dark brown (7.5YR 3/2), moist; gravelly loam; 45 percent sand; 37 percent silt; 18 percent clay; weak medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 21.0 fine roots throughout and 21.0 coarse roots throughout; 21.0 medium tubular and 21.0 coarse tubular pores; 1 percent clay films on surfaces along pores and 1 percent clay films on top faces of peds; 20 percent by volume nonflat subangular indurated 2-39-75 millimeter andesite fragments observed by visual inspection method; strongly acid, pH 5.5; clear smooth boundary. Lab sample # UCD03966
    Bt2—59 to 79 centimeters (23.2 to 31.1 inches); grayish brown (10YR 5/2), dark brown (10YR 3/3), moist; gravelly loam; 48 percent sand; 36 percent silt; 16 percent clay; weak medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 0.5 fine roots throughout; 3.0 medium tubular and 3.0 fine tubular pores; 10 percent clay films on top faces of peds; 33 percent by volume nonflat subangular indurated 2-39-75 millimeter andesite fragments observed by visual inspection method; strongly acid, pH 5.4; clear smooth boundary. Lab sample # UCD03967
    C—79 to 100 centimeters (31.1 to 39.4 inches); light brownish gray (10YR 6/2), dark yellowish brown (10YR 3/4), moist; gravelly coarse sandy loam; 60 percent sand; 30 percent silt; 10 percent clay; massive; hard, firm, slightly sticky, moderately plastic; 0.5 medium roots throughout; 3.0 fine tubular pores; 28 percent by volume nonflat subangular indurated 2-39-75 millimeter andesite fragments observed by visual inspection method; very strongly acid, pH 5.0. Lab sample # UCD03968