IDENTIFIERS

  • Current Taxon Name (Soil Name): Lobitos
  • OSD
  • Series Extent
  • User Site ID: S1955CA081014
  • User Pedon ID: S1955CA081014
  • Vegetation Plot ID: S1955CA081014
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 40A3031
  • NCSS Pedon Lab Data NASIS Record ID - 38160
  • 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: 37.3819427
  • Std. Longitude: -122.3933334
  • Datum: WGS84
  • Location Description: San Mateo County SCD, 1/4 mile southeast of Lobitos.
  • State: California
  • County: CA081—San Mateo
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA637—San Mateo Area, California

    • PEDON

  • Describers Name: Ralph E. Nelson
  • Current Taxonomic Class: Fine, mixed, mesic Pachic Ultic Haploxerolls
  • Current Taxon Kind: taxadjunct
  • Pedon Type: taxadjunct to the series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x
  • Pedon #: 14
  • Correlated Information:
  • Soil Name - Lobitos
  • PSC - 25 to 91 cm.
  • Classificaton Date - 7/23/2007
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Lobitos
  • Classificaton Date - 5/20/1955
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: hills
  • Landform: mountain
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/20/1955 (actual site observation date)
  • Surface Cover Properties:
  • 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

    TOXIC

    Toxicodendron

    poison oak

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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

    —

    —

    98

    —

    45

    940

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    A11—0 to 20 centimeters (0.0 to 7.9 inches); very dark grayish brown (10YR 3/2) and very dark gray (10YR 3/1), very dark brown (10YR 2/2) and black (10YR 2/1), moist; silt loam; moderate fine and medium subangular blocky structure; hard when dry, friable, very sticky, slightly plastic; 21 percent worm casts; fragments; slightly acid, pH 6.4, unspecified; clear smooth boundary. Lab sample # 40A23770. There are numerous rock fragments scattered throughout the profile. There are abundant worm casts and roots.
    A12—20 to 38 centimeters (7.9 to 15.0 inches); very dark grayish brown (10YR 3/2) and very dark gray (10YR 3/1), very dark brown (10YR 2/2) and black (10YR 2/1), moist; silt loam; moderate fine and medium subangular blocky structure; hard when dry, friable, very sticky, slightly plastic; 21.0 roots; 21 percent worm casts; fragments; slightly acid, pH 6.4, unspecified; clear wavy boundary. Lab sample # 40A23771. There are many worm casts, abundant roots and many rock fragments in this horizon.
    B2—38 to 71 centimeters (15.0 to 28.0 inches); light olive brown (2.5Y 5/4), olive brown (2.5Y 4/4) and dark grayish brown (2.5Y 4/2), moist; gravelly silty clay loam; moderate fine subangular blocky structure; hard when dry, firm, slightly sticky, moderately plastic; grayish brown (2.5Y 5/2) clay films; fragments; slightly acid, pH 6.2, unspecified; clear wavy boundary. Lab sample # 40A23772. Many rock fragments and some roots.; patchy - phpvsfiid 186760; patchy - phpvsfiid 186760
    C—71 to 91 centimeters (28.0 to 35.8 inches); light olive brown (2.5Y 5/4) and olive yellow (2.5Y 6/6) and light brownish gray (2.5Y 6/2), very dark grayish brown (2.5Y 3/2), moist; clay loam; massive; hard when dry, firm, slightly sticky, slightly plastic; fragments; moderately acid, pH 6.0, unspecified; clear wavy boundary. Lab sample # 40A23773. There are occasional roots down the rock faces and the rock is a grayish brown (2.5Y 5/2) with fine yellowish brown (10YR 5/6-5/8) iron spots.
    CR—91 to 91 centimeters (35.8 to 35.8 inches); light olive brown (2.5Y 5/4); fragments. Lab sample # 40A23774. Light olive brown, coarsely angular, slightly weathered fragments of silty Purisima sandstone or shale and some loosened soil material. Many feet thick.