IDENTIFIERS

  • Current Taxon Name (Soil Name): Sierra
  • OSD
  • Series Extent
  • User Site ID: S1977-CA-55-039x
  • User Pedon ID: 77-CA-55-039x
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - UCDAVIS
  • Lab Pedon # - UCD7755039
  • NCSS Pedon Lab Data NASIS Record ID - 42346
  • Print Date: 2/3/2025

    • 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: 37.9308985
  • Std. Longitude: -120.3375120
  • Datum: WGS84
  • Township: 1N
  • Range: 15E
  • Section: 21
  • PLSS Details: Center N/2, NW/4
  • Map Unit: 6074—Sierra-Orose complex, 8 to 30 percent slopes
  • State: California
  • County: CA109—Tuolumne
  • MLRA: 18—Sierra Nevada Foothills
  • 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: BFS
  • Current Taxonomic Class: Fine-loamy, mixed, active, thermic Ultic Argixerolls
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: laboratory sampling site
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Sierra
  • PSC - 30 to 80 cm.
  • Classificaton Date - 3/29/2017
  • Classifier - Andrew Brown
  • Soil Taxonomic Edition - twelfth edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - LAS POSAS
  • Taxonomic Class - Fine-loamy, mixed, thermic Ultic Argixerolls
  • 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: diorite
  • Geology: Gabbro-diorite. Geologic Forma 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, savanna
  • 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

    argillic horizon

    paralithic contact

    0—30

    30—91

    160—185

    —30—

    —61—

    —25—
    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

    21

    —

    —

    594

    —

    270

    838

    —

    —

    5

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 10 centimeters (0.0 to 3.9 inches); brown (7.5YR 5/4), dark brown (7.5YR 3/2), moist; fine sandy loam; 63 percent sand; 12 percent clay; massive; slightly hard, friable, nonsticky, nonplastic; 21.0 very fine roots throughout and 21.0 fine roots throughout and 21.0 roots throughout; 3.0 very fine irregular and 3.0 very fine tubular and 3.0 fine irregular and 3.0 fine tubular pores; fragments; moderately acid, pH 5.7; clear smooth boundary. Lab sample # UCD01125
    BA—10 to 30 centimeters (3.9 to 11.8 inches); brown (7.5YR 5/4), dark reddish brown (5YR 3/3), moist; fine sandy loam; 60 percent sand; 15 percent clay; massive; slightly hard, firm, slightly sticky, slightly plastic; 21.0 very fine roots throughout and 21.0 fine roots throughout; 3.0 fine tubular pores; fragments; moderately acid, pH 5.8; gradual smooth boundary. Lab sample # UCD01126
    Bt—30 to 91 centimeters (11.8 to 35.8 inches); reddish brown (5YR 4/4), dark reddish brown (5YR 3/4), moist; sandy clay loam; 50 percent sand; 25 percent clay; weak coarse subangular blocky parts to weak medium subangular blocky structure; hard, firm, moderately sticky, moderately plastic; 3.0 very fine roots throughout and 3.0 fine roots throughout; 3.0 fine tubular pores; 30 percent clay films on top faces of peds; fragments; moderately acid, pH 5.9; gradual smooth boundary. Lab sample # UCD01127
    BC—91 to 160 centimeters (35.8 to 63.0 inches); reddish brown (5YR 4/4), reddish brown (5YR 4/3), moist; fine sandy loam; 62 percent sand; 18 percent clay; massive; slightly hard, friable, slightly sticky, slightly plastic; 0.1 fine tubular pores; fragments; moderately acid, pH 5.9; gradual smooth boundary. Lab sample # UCD01128
    C—160 to 191 centimeters (63.0 to 75.2 inches); brown (7.5YR 5/4), brown (7.5YR 4/4), moist; coarse sandy loam; 74 percent sand; 8 percent clay; massive; soft, very friable, nonsticky, nonplastic; 0.1 fine tubular pores; fragments; moderately acid, pH 6.0. Lab sample # UCD01129