IDENTIFIERS

  • Current Taxon Name (Soil Name): Maxwell
  • OSD
  • Series Extent
  • User Site ID: S1978CA055001
  • User Pedon ID: 78CA055001
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 78P0455
  • NCSS Pedon Lab Data NASIS Record ID - 46009
  • 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: 38.6315536
  • Std. Longitude: -122.3871765
  • Datum: WGS84
  • Township: 9N
  • Range: 5W
  • Section: 14
  • PLSS Details: 255 meters W and 81 meters S of corner
  • State: California
  • County: CA055—Napa

    • PEDON

  • Describers Name: RPL
  • Current Taxonomic Class: Fine, smectitic, thermic Typic Haploxererts
  • Current Taxon Kind: series
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: Converted from SSL-CMS data
  • Pedon #: 1
  • Correlated Information:
  • Soil Name - Maxwell
  • Classificaton Date - 7/11/2007
  • Moisture Class - xeric
  • Sampled As Information:
  • Soil Name - Maxwell
  • Taxonomic Class - Fine, montmorillonitic, thermic Typic Pelloxerert
  • Taxon Kind - series
  • Classificaton Date - 5/1/1978
  • Moisture Class - xeric
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Landscape: plains
  • Landform: terrace—stream or lake
  • Runoff: low
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/1/1978 (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
  • Site Erosion Accelerated: water erosion
    • 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

    1

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    184

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    1A11—0 to 5 centimeters (0.0 to 2.0 inches); dark gray (N 4/0) interior, very dark gray (N 3/0) interior, moist; clay; strong fine and medium granular structure; hard, firm, moderately sticky, moderately plastic; 2.5 very fine and fine roots; 0.1 coarse interstitial pores; fragments; moderately alkaline, pH 8.0, hellige-truog; gradual wavy boundary. Lab sample # 78P02547. common very fine and fine roots
    1A12—5 to 33 centimeters (2.0 to 13.0 inches); dark gray (N 4/0) interior, very dark gray (N 3/0) interior, moist; clay; strong very coarse prismatic structure; very hard, firm, moderately sticky, moderately plastic; 2.5 very fine and fine roots; 1.0 medium interstitial and 0.1 fine tubular pores; fragments; moderately alkaline, pH 8.0, hellige-truog; clear wavy boundary. Lab sample # 78P02548. common very fine and fine roots
    1A13—33 to 70 centimeters (13.0 to 27.6 inches);, very dark gray (N 3/0) interior, moist; clay; moderate medium and coarse subangular blocky structure; very hard, firm, moderately sticky, moderately plastic; 2.5 very fine and fine roots; 0.1 medium tubular and 0.5 fine interstitial pores; fragments; moderately alkaline, pH 8.2, hellige-truog; diffuse wavy boundary. Lab sample # 78P02549. common very fine and fine roots
    1A14—77 to 107 centimeters (30.3 to 42.1 inches);, very dark gray (N 3/0) interior, moist; clay; moderate subangular blocky structure; firm, moderately sticky, moderately plastic; 0.1 very fine roots; 0.1 medium interstitial pores; fragments; moderately alkaline, pH 8.2, hellige-truog; clear wavy boundary. Lab sample # 78P02550. very few very fine roots
    1C1—107 to 144 centimeters (42.1 to 56.7 inches);, very dark gray (10YR 3/1) interior, moist; silty clay; medium subangular blocky structure; friable, moderately sticky, moderately plastic; 0.1 roots; 0.5 medium interstitial pores; fragments; moderately alkaline, pH 8.2, hellige-truog; gradual wavy boundary. Lab sample # 78P02551. very few roots
    1C2ca—144 to 178 centimeters (56.7 to 70.1 inches);, very dark gray (10YR 3/1) interior, moist; silty clay; moderate subangular blocky structure; firm, moderately sticky, moderately plastic; 0.1 coarse roots; 0.5 fine interstitial pores; fragments; moderately alkaline, pH 8.2, hellige-truog. Lab sample # 78P02552. very few coarse roots