IDENTIFIERS

  • Current Taxon Name (Soil Name): unnamed
  • OSD
  • Series Extent
  • User Site ID: S1971CA001001
  • User Pedon ID: S1971CA001001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 72C0001
  • NCSS Pedon Lab Data NASIS Record ID - 43935
  • Print Date: 4/28/2024

    • LOCATION

  • Township: 2S
  • Range: 3E
  • Section: 19
  • PLSS Details: 750 feet east and 2250 feet south of northwest corner, SE 1/4 SW 1/4 NW 1/4
  • Location Description: 6 miles northeast of Livermore
  • State: California
  • County: CA001—Alameda

    • PEDON

  • Describers Name: Larry Welch, Cliff Landers, Dave Maurer
  • Current Taxonomic Class: Fine, montmorillonitic, thermic Typic Chromoxererts
  • Pedon Record Orgin: NASIS
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - unnamed
  • Classificaton Date - 7/24/2007
  • Sampled As Information:
  • Soil Name - altamont
  • Classificaton Date - 10/5/1971
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landform: hilly upland slope
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: well
  • Bedrock: sandstone and shale
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 10/5/1971 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • 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

    40

    —

    —

    280

    —

    315

    305

    —

    —

    —

    —

    —

    15.6

    —

    —

    —

    —

    —

    —

    —
    A11—0 to 28 centimeters (0.0 to 11.0 inches); dark grayish brown (10YR 4/2), dark grayish brown (10YR 4/2), moist; clay; strong very coarse prismatic structure; extremely hard, firm, moderately sticky, very plastic; 21.0 very fine roots; 0.5 very fine tubular pores; 10 percent slickensides (pedogenic); fragments; slightly alkaline, pH 7.5; gradual smooth boundary. Lab sample # 72C00008, 72C00001
    A12—28 to 53 centimeters (11.0 to 20.9 inches);, very dark grayish brown (10YR 3/2), moist; clay; strong very coarse prismatic structure; extremely hard, firm, moderately sticky, very plastic; 21.0 very fine roots; 0.5 very fine tubular pores; slickensides (pedogenic); 10 percent weakly coherent cemented lime nodules; fragments; moderately alkaline, pH 8.0; gradual smooth boundary. Lab sample # 72C00009, 72C00002
    A13—53 to 71 centimeters (20.9 to 28.0 inches); brown (10YR 5/3), brown (10YR 4/3), moist; clay; strong very coarse prismatic structure; extremely hard, firm, moderately sticky, very plastic; 3.0 very fine roots; 0.5 very fine tubular pores; slickensides (pedogenic); lime nodules and carbonate, finely disseminated; fragments; slight effervescence; moderately alkaline, pH 8.2; gradual smooth boundary. Lab sample # 72C00003
    AC—71 to 91 centimeters (28.0 to 35.8 inches); light yellowish brown (10YR 6/4) and grayish brown (10YR 5/2), yellowish brown (10YR 5/4) and dark grayish brown (10YR 4/2), moist; clay; moderate very coarse prismatic structure; extremely hard, firm, moderately sticky, very plastic; 0.5 very fine roots; 3.0 very fine tubular pores; slickensides (pedogenic); carbonate, finely disseminated; fragments; strong effervescence; moderately alkaline, pH 8.2; clear smooth boundary. Lab sample # 72C00004
    ACac—91 to 119 centimeters (35.8 to 46.9 inches); light yellowish brown (10YR 6/4) and grayish brown (10YR 5/2), yellowish brown (10YR 5/4) and dark grayish brown (10YR 4/2), moist; silty clay; moderate very coarse subangular blocky, and moderate fine subangular blocky structure; extremely hard, friable, moderately sticky, moderately plastic; 0.5 very fine roots; 3.0 very fine tubular pores; 30 percent pressure faces; carbonate, finely disseminated and threadlike lime masses; fragments; violent effervescence; moderately alkaline, pH 8.2; abrupt smooth boundary. Lab sample # 72C00005
    Cac1—119 to 145 centimeters (46.9 to 57.1 inches); grayish brown (2.5Y 5/2) and light olive brown (2.5Y 5/4) bedrock; very pale brown (10YR 8/2), dry, lime masses and carbonate, finely disseminated; fragments; violent effervescence; moderately alkaline, pH 8.2. Lab sample # 72C00006
    C2—145 to 178 centimeters (57.1 to 70.1 inches); grayish brown (2.5Y 5/2) and olive brown (2.5Y 4/4) bedrock; fragments; moderately alkaline, pH 8.0. Lab sample # 72C00007