IDENTIFIERS

  • Current Taxon Name (Soil Name): DIABLO
  • OSD
  • Series Extent
  • User Site ID: S1958CA001001
  • User Pedon ID: S1958CA001001
  • Vegetation Plot ID: S1958CA001001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3094
  • NCSS Pedon Lab Data NASIS Record ID - 38223
  • Print Date: 11/21/2024

    • 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: 37.7244453
  • Std. Longitude: -121.8183365
  • Datum: WGS84
  • Township: 2S
  • Range: 1E
  • Section: 25
  • PLSS Details: 1325 feet east and 275 feet north of SW corner
  • Location Description: Bailey Ranch.
  • State: California
  • County: CA001—Alameda
  • MLRA: 15—Central California Coast Range
  • Non-MLRA Soil Survey Area: CA609—Alameda Area, California

    • PEDON

  • Describers Name: R. Ulrich
  • Current Taxonomic Class: Fine, smectitic, thermic Aridic Haploxererts
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - DIABLO
  • PSC - 25 to 100 cm.
  • Classificaton Date - 7/16/2007
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Diablo
  • Classificaton Date - 11/10/1958
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Slope Shape Down: linear
  • Runoff: medium
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 11/10/1958 (actual site observation date)
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - crop cover
  • 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

    CIVU

    HOMU

    MEPO3

    Cirsium vulgare

    Hordeum murinum

    Medicago polymorpha

    bull thistle

    mouse barley

    burclover

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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

    30

    —

    —

    183

    —

    0

    368

    —

    —

    —

    —

    —

    15.6

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    A11—0 to 15 centimeters (0.0 to 5.9 inches); dark gray (5Y 4/1), very dark gray (5Y 3/1), moist; clay; strong coarse prismatic, and strong medium and coarse subangular blocky structure; very hard, very firm, moderately sticky, very plastic; 21.0 fine roots; 1.0 very fine and fine tubular pores; fragments; noneffervescent; clear wavy boundary. Lab sample # 40A24195. plentiful fine roots but mainly along structure planes and faces.
    A12—15 to 38 centimeters (5.9 to 15.0 inches); dark gray (5Y 4/1), very dark gray (5Y 3/1), moist; clay; moderate coarse prismatic, and moderate coarse subangular blocky structure; very hard, very firm, moderately sticky, very plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 10 percent slickensides (pedogenic); fragments; noneffervescent; clear wavy boundary. Lab sample # 40A24196. concentrated mainly along structural planes and facing; noncalcareous in most of mass except for an occasional small hardened whitish lime nodule embedded in mass.
    A13CA—38 to 66 centimeters (15.0 to 26.0 inches); gray (5Y 5/1) and olive gray (5Y 5/2), dark gray (5Y 4/1) and olive gray (5Y 4/2), moist; clay; moderate coarse prismatic, and moderate medium subangular blocky structure; very hard, very firm, moderately sticky, very plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 1 percent fine pinkish white (7.5YR 8/2) carbonate nodules; fragments; strong effervescence; clear wavy boundary. Lab sample # 40A24197. concentrated mainly along structure planes and facing; with strong effervescence by the lime nodules.
    A14CA—66 to 81 centimeters (26.0 to 31.9 inches); gray (5Y 5/1) and olive gray (5Y 5/2), dark gray (5Y 4/1) and olive gray (5Y 4/2), moist; clay; weak coarse prismatic, and weak medium subangular blocky structure; very hard, very firm, moderately sticky, very plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 30 percent slickensides (pedogenic); 1 percent fine pinkish white (7.5YR 8/2) carbonate nodules; fragments; strong effervescence; diffuse boundary. Lab sample # 40A24198. mainly along structural planes and facings, distinctly flattened in appearance; slightly calcareous in matrix, with strong lime nodule effervescence.
    ACCA—81 to 107 centimeters (31.9 to 42.1 inches); light olive gray (5Y 6/2), olive gray (5Y 5/2), moist; silty clay loam; weak medium subangular blocky structure; very hard, very firm, slightly sticky, moderately plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 21 percent noncoherent cemented pinkish white (7.5YR 8/2) carbonate nodules; fragments; strong effervescence; clear wavy boundary. Lab sample # 40A24199. with abundant whitish lime films and soft segregations.
    C2—107 to 127 centimeters (42.1 to 50.0 inches); olive gray (5Y 5/2) and light olive gray (5Y 6/2), olive gray (5Y 5/2) and olive gray (5Y 4/2), moist; silty clay loam; fine and medium mottles; weak fine and medium subangular blocky structure; very hard, very firm, slightly sticky, moderately plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 21 percent noncoherent cemented pinkish white (7.5YR 8/2) carbonate nodules; fragments; strong effervescence; abrupt smooth boundary. Lab sample # 40A24200. with many embedded shale fragments and soft whitish lime films and soft and hardened lime nodules
    R—127 to 150 centimeters (50.0 to 59.1 inches); light olive gray (5Y 6/2), olive gray (5Y 5/2), moist; sandstone, unspecified fragments. Lab sample # 40A24201. with whitish lime films on fracture facings; parent rock materials react weakly to dilute acid, with a strong reaction being obtained from the whitish lime segregations.