IDENTIFIERS

  • Current Taxon Name (Soil Name): unnamed
  • OSD
  • Series Extent
  • User Site ID: S1974CA041008
  • User Pedon ID: 74CA041008
  • Vegetation Plot ID: S1974CA041008
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 74C0019
  • NCSS Pedon Lab Data NASIS Record ID - 44780
  • Print Date: 12/17/2024

    • LOCATION

  • Location Description: Marin County, California. In a pasture, approximately 6,000 feet northwest of Highway 1, and 1,000 feet southeast of Clarke Road.
  • State: California
  • County: CA041—Marin
  • MLRA: 15—Central California Coast Range
  • Non-MLRA Soil Survey Area: CA041—Marin County, California

    • PEDON

  • Describers Name: T. Cook & D. Nettleton
  • Current Taxonomic Class: Fine, mixed, isomesic Aquic Haploxerults
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from PDP 3.x then edited
  • Pedon #: 8
  • Sampled As Information:
  • Soil Name - unnamed
  • Taxonomic Class - Fine, mixed, isomesic Aquic Haploxerults
  • Classificaton Date - 6/1/1974
  • Soil Taxonomic Edition - ninth edition
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Slope Complexity: simple
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: medium
  • Drainage Class: moderately well
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 6/1/1974 (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

    ALOPE

    LOLIU

    MEHI

    Alopecurus

    Lolium

    Medicago hispida

    foxtail

    ryegrass

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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

    6

    —

    —

    109.7

    —

    660

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    R—0 to 0 centimeters (0.0 to 0.0 inches); fragments. Lab sample # 74C00133
    A11—0 to 23 centimeters (0.0 to 9.1 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; 1 percent very pale brown (10YR 7/3) medium distinct and 1 percent grayish brown (10YR 5/2) medium distinct mottles; weak coarse angular blocky, and moderate fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 21.0 very fine roots and 0.5 fine and medium roots; 0.5 very fine interstitial and 0.5 fine tubular pores; fragments; strongly acid, pH 5.5; clear smooth boundary. Lab sample # 74C00123
    A12—23 to 36 centimeters (9.1 to 14.2 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; moderate medium subangular blocky, and weak very fine crumb structure; hard, very friable, slightly sticky, slightly plastic; 21.0 very fine roots and 0.5 fine and medium roots; 21.0 very fine interstitial and 0.5 fine tubular pores; fragments; strongly acid, pH 5.5; gradual smooth boundary. Lab sample # 74C00124
    A13—36 to 50 centimeters (14.2 to 19.7 inches); dark grayish brown (10YR 4/2), very dark grayish brown (10YR 3/2), moist; weak very fine crumb, and moderate medium subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 21.0 very fine roots and 0.5 fine and medium roots; 21.0 very fine interstitial and 0.5 fine tubular pores; fragments; moderately acid, pH 5.8; clear wavy boundary. Lab sample # 74C00125
    A14—50 to 60 centimeters (19.7 to 23.6 inches); brown (10YR 4/3) and pale brown (10YR 6/3), dark brown (10YR 3/3), moist; weak medium angular blocky, and moderate fine subangular blocky structure; hard, very friable, moderately sticky, moderately plastic; 0.5 very fine roots; 0.5 very fine and fine tubular and 21.0 very fine interstitial pores; fragments; moderately acid, pH 6.0; clear wavy boundary. Lab sample # 74C00126
    A21—60 to 76 centimeters (23.6 to 29.9 inches); pale brown (10YR 6/3), dark yellowish brown (10YR 4/4) and brown (10YR 4/3) rubbed, moist; moderate fine subangular blocky structure; slightly hard, very friable, nonsticky, slightly plastic; 0.5 very fine roots; 0.5 very fine and fine tubular and 21.0 very fine interstitial pores; 1 percent thin clay films on surfaces along pores; 4 percent medium and coarse iron-manganese concretions; fragments; moderately acid, pH 6.0; clear wavy boundary. Lab sample # 74C00127
    A22—76 to 86 centimeters (29.9 to 33.9 inches); pale yellow (2.5Y 8/4), yellowish brown (10YR 5/4) rubbed and yellowish brown (10YR 5/6), moist; weak fine subangular blocky structure; slightly hard, very friable, slightly sticky, slightly plastic; 0.5 very fine roots; 0.5 very fine and fine tubular and 21.0 very fine interstitial pores; 10 percent thin clay films on surfaces along pores and 10 percent thick clay films on all faces of peds and 75 percent pressure faces; 4 percent medium and coarse iron-manganese concretions; fragments; moderately acid, pH 6.0; abrupt wavy boundary. Lab sample # 74C00128
    Bt21—86 to 97 centimeters (33.9 to 38.2 inches); yellow (2.5Y 7/8) and pale yellow (2.5Y 7/4), strong brown (7.5YR 5/6) rubbed and dark yellowish brown (10YR 4/4), moist; 21 percent strong brown (7.5YR 5/6) fine prominent mottles; massive; very hard, very firm, very sticky, very plastic; 0.5 very fine roots; 3.0 very fine tubular pores; thick clay films on surfaces along pores; fragments; strongly acid, pH 5.5; clear wavy boundary. Lab sample # 74C00129. continuous - phpvsfiid 316246; continuous - phpvsfiid 316246
    Bt22—97 to 127 centimeters (38.2 to 50.0 inches); yellow (2.5Y 7/8) and pale yellow (2.5Y 7/4), brown (10YR 5/3) and strong brown (7.5YR 5/6), moist; massive; very hard, very firm, very sticky, very plastic; 0.5 very fine roots; 21.0 very fine tubular pores; thick clay films on surfaces along pores and 10 percent thick clay films on all faces of peds and 75 percent pressure faces; fragments; strongly acid, pH 5.5; gradual wavy boundary. Lab sample # 74C00130. continuous - phpvsfiid 316243; continuous - phpvsfiid 316243
    Bt23—127 to 147 centimeters (50.0 to 57.9 inches); pale yellow (2.5Y 7/4) and yellow (2.5Y 7/8), yellowish brown (10YR 5/4) and gray (5Y 5/1) and reddish brown (5YR 4/4), moist; massive; very hard, very firm, very sticky, very plastic; 0.5 very fine roots; 3.0 very fine tubular pores; 10 percent thick clay films on all faces of peds and 75 percent pressure faces; fragments; strongly acid, pH 5.3. Lab sample # 74C00131
    C—147 to 190 centimeters (57.9 to 74.8 inches); fragments. Lab sample # 74C00132