IDENTIFIERS

  • Current Taxon Name (Soil Name): DIABLO
  • OSD
  • Series Extent
  • User Site ID: S1958CA001002
  • User Pedon ID: S1958CA001002
  • Vegetation Plot ID: S1958CA001002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3095
  • NCSS Pedon Lab Data NASIS Record ID - 38224
  • Print Date: 11/23/2024

    • 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: 37.7491684
  • Std. Longitude: -121.8177795
  • Datum: WGS84
  • Township: 2S
  • Range: 1E
  • Section: 24
  • PLSS Details: 1300 feet east and 1150 feet south of NW corner
  • Location Description: Beck 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 #: 2
  • 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 - 11/11/1958
  • 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: 11/11/1958 (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
    • Vegetation Plot Plants
    Plant Symbol Scientific Name National Vernacular Name Plant Type Group Canopy Cover % Vegetation Stata Level

    MEPO3

    RUMEX

    Medicago polymorpha

    Rumex

    burclover

    dock

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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

    35

    —

    —

    259

    —

    0

    368

    —

    —

    —

    —

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    15.6

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    A11—0 to 18 centimeters (0.0 to 7.1 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 throughout; 1.0 very fine and fine tubular pores; fragments; noneffervescent; clear wavy boundary. Lab sample # 40A24202
    A12—18 to 43 centimeters (7.1 to 16.9 inches); dark gray (5Y 4/1), very dark gray (5Y 3/1), moist; silty clay; moderate coarse prismatic, and moderate medium and coarse subangular blocky structure; very hard, very firm, moderately sticky, very plastic; 1.0 fine roots throughout; 1.0 very fine and fine tubular pores; 10 percent slickensides (pedogenic); fine carbonate nodules; fragments; noneffervescent; clear wavy boundary. Lab sample # 40A24203. noncalcareous but a fine hard lime nodule or a slightly calcareous shale fragment may be included in sampled material
    A13CA—43 to 71 centimeters (16.9 to 28.0 inches); dark gray (5Y 4/1), very dark gray (5Y 3/1), moist; silty clay; moderate coarse prismatic, and moderate coarse subangular blocky structure; very hard, very firm, moderately sticky, moderately plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 10 percent slickensides (pedogenic); 1 percent fine weakly coherent cemented pinkish white (7.5YR 8/2) carbonate nodules; fragments; slight effervescence; clear wavy boundary. Lab sample # 40A24204. slightly calcareous with a few fine hardened whitish lime nodules and some mycelial lime films in lower part
    C1CA—71 to 94 centimeters (28.0 to 37.0 inches); greenish gray (5GY 6/1), greenish gray (5GY 5/1), moist; silty clay loam; weak medium subangular blocky structure; hard when dry, firm, slightly sticky, moderately plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; 10 percent slickensides (pedogenic); 1 percent fine pinkish white (7.5YR 8/2) carbonate nodules; fragments; strong effervescence; clear wavy boundary. Lab sample # 40A24205. moderately calcareous with abundant whitish mycelial lime films on ped surfaces and few fine whitish hardened lime nodules
    C2CA—94 to 122 centimeters (37.0 to 48.0 inches); olive gray (5Y 5/2) and greenish gray (5GY 6/1), olive gray (5Y 4/2) and greenish gray (5GY 5/1), moist; silty clay loam; weak fine subangular blocky structure; hard when dry, firm, moderately sticky, moderately plastic; 1.0 fine roots; 1.0 very fine and fine tubular pores; fragments; strong effervescence; abrupt smooth boundary. Lab sample # 40A24206. including both segregated and disseminated lime, numerous small shale fragments
    R—122 to 150 centimeters (48.0 to 59.1 inches); greenish gray (5GY 6/1), greenish gray (5GY 5/1), moist; fragments. Lab sample # 40A24207. shattered fine grained sandstone to coarse grained shale with whitish lime films on fracture facings; parent rock fragments react weakly to dilute acid, with strong reaction being obtained from the whitish lime films