IDENTIFIERS

  • Current Taxon Name (Soil Name): Masthead
  • OSD
  • Series Extent
  • User Site ID: S2006CA037002
  • User Pedon ID: S2006CA037002
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 06N0793
  • NCSS Pedon Lab Data NASIS Record ID - 18636
  • Print Date: 11/24/2024

    • 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: 33.3942795
  • Std. Longitude: -118.4358597
  • Datum: WGS84
  • Country: US—United States
  • State: California
  • County: CA037—Los Angeles
  • MLRA: 20—Southern California Mountains
  • Non-MLRA Soil Survey Area: CA688—Channel Islands Area, California, Parts of Santa Barbara and Los Angeles Counties

    • PEDON

  • Describers Name: Matthew E. Ballmer
  • Current Taxonomic Class: Fine, smectitic, thermic Pachic Argixerolls
  • Current Taxon Kind: series
  • Pedon Type: classifies to current taxon name, full description
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 2
  • Sampled As Information:
  • Soil Name - Masthead
  • Taxonomic Class - Fine, smectitic, thermic Pachic Argixerolls
  • PSC - 11 to 61 cm.
  • Classificaton Date - 1/24/2006
  • Soil Taxonomic Edition - ninth edition
  • Moisture Class - xeric
  • Moisture SUBClass - xeric
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: slope alluvium over Catalina Schist (albite-muscovite) residuum weathered from schist
  • Landscape: island
  • Landform: interfluve
  • Geomorphic Component Hills: interfluve
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Bedrock: extremely weakly coherent strong weathered schist, unspecified with <10
  • Surface Fragments: 25.00 percent flat rounded 2- to 75-millimeter 30.00 percent nonflat rounded 2- to 75-millimeter 5.00 percent nonflat rounded 75- to 250-millimeter 5.00 percent flat rounded 75- to 250-millimeter
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 1/24/2006 (actual site observation date)
  • Air Photo ID: G
  • Surface Cover Properties:
  • Pedoderm Loose Cover Indicator - no
  • Drained? - no
  • Bedded Soil? - no
  • Forest Plantation? - no
    • Pedon Restrictions
    Kind Hardness Restriction Depth L-H Restriction Thickness L-RV-H
    cm

    bedrock, paralithic

    extremely weakly coherent

    —

    —
    Pedon Diagnostic Features
    Feature Kind Feature Depth L-H Feature Thickness L-RV-H
    cm

    mollic epipedon

    argillic horizon

    —

    11—61

    —-

    —-
    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

    —

    —

    241

    —

    210

    14

    —

    —

    16

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A—0 to 11 centimeters (0.0 to 4.3 inches); brown (7.5YR 5/4) broken face, dark brown (7.5YR 3/3) broken face, moist; gravelly silt loam; 10 percent clay; moderate fine subangular blocky structure; slightly hard, loose, slightly sticky, slightly plastic; low excavation difficulty; 2.0 very fine roots; 5 percent by volume nonflat rounded 75-163-250 millimeter unspecified fragments and 10 percent by volume nonflat rounded 2-39-75 millimeter unspecified fragments; clear wavy boundary. Lab sample # 06N03268; observed in pit, small
    Bt1—11 to 29 centimeters (4.3 to 11.4 inches); reddish brown (5YR 5/3) broken face, dark reddish brown (5YR 3/3) broken face, moist; clay; 45 percent clay; strong medium angular blocky structure; hard, firm, very sticky, very plastic; high excavation difficulty; 1.0 very fine roots and 1.0 medium roots; prominent clay films on rock fragments and prominent clay films on all faces of peds; 10 percent by volume nonflat rounded 2-39-75 millimeter unspecified fragments; clear wavy boundary. Lab sample # 06N03269; observed in pit, small. stained hand while texturing.
    Bt2—29 to 62 centimeters (11.4 to 24.4 inches); variegated reddish brown (5YR 5/3) broken face, dark reddish brown (5YR 3/3) broken face, moist; gravelly clay; 50 percent clay; moderate medium angular blocky structure; hard, firm, very sticky, very plastic; high excavation difficulty; prominent clay films on rock fragments and prominent clay films on all faces of peds; 15 percent by volume nonflat rounded 75-163-250 millimeter unspecified fragments and 15 percent by volume nonflat rounded 2-39-75 millimeter unspecified fragments; abrupt wavy boundary. Lab sample # 06N03270; observed in pit, small
    Cr—62 centimeters (24.4 inches); very high excavation difficulty; prominent clay films on rock fragments; fragments.; observed in pit, small