IDENTIFIERS

  • Current Taxon Name (Soil Name): Forhaux
  • OSD
  • Series Extent
  • User Site ID: 06CA600105
  • User Pedon ID: 06CA600105
  • Vegetation Plot ID: 06CA600105
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - NSSL
  • Lab Pedon # - 07N0347
  • NCSS Pedon Lab Data NASIS Record ID - 19040
  • 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: 40.4555556
  • Std. Longitude: -124.2047222
  • Datum: WGS84
  • Location Description: Russ Property
  • Map Unit: 4408—Dolason-Forhaux-Peaked complex, 5 to 30 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 4—California Coastal Redwood Belt
  • Non-MLRA Soil Survey Area: CA600—Humboldt County, Central Part, California
  • 7.5 Minute USGS Quad: 40124-D2—Taylor Peak, California

    • PEDON

  • Describers Name: Kylee Bennett, Jennifer Berman
  • Current Taxonomic Class: Loamy-skeletal, isotic, mesic Pachic Humixerepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Correlated Information:
  • Soil Name - Forhaux (flagged as OSD)
  • PSC - 25 to 100 cm.
  • Classificaton Date - 3/29/2013
  • Classifier - Jonathan Hooper
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Forhaux
  • Classificaton Date - 5/24/2006
  • Dynamic Soil Properties:
  • Erosion Class - 1
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: residuum weathered from sandstone and/or residuum weathered from mudstone
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountaintop
  • Hill Slope Profile: summit
  • Slope Complexity: complex
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Geology: Co1 Melange member of the Coastal Terrane formation in the Franciscan Complex group.
  • Surface Fragments: 8.00 percent nonflat subrounded strongly coherent cemented 2- to 75-millimeter sandstone, unspecified,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 5/24/2006 (actual site observation date)
  • Air Photo ID: 6247-134
  • Surface Water Kind: none observed
  • Plant Association Name: Grasses, forbs, some Douglas-fir invadin
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - grass/herbaceous cover
  • Site Obs. Cover Kind 2 - rangeland, grassland
  • 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

    RUAC3

    TARAX

    2GP

    2GA

    Rumex acetosella

    Taraxacum

    —

    —

    common sheep sorrel

    dandelion

    Grass, perennial

    Grass, annual

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —

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

    umbric epipedon

    cambic horizon

    0—70

    70—160

    —70—

    —90—
    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

    13

    —

    —

    736

    —

    300

    1525

    —

    260

    13

    —

    —

    —

    —

    —

    —

    —

    —

    —

    —
    A1—0 to 21 centimeters (0.0 to 8.3 inches); dark grayish brown (10YR 4/2) broken face, very dark brown (10YR 2/2) broken face, moist; gravelly loam; 18 percent clay; weak very fine and fine granular structure; soft, very friable, slightly sticky, nonplastic; moderate permeability; high excavation difficulty; 3.0 very fine roots throughout and 5.0 fine roots throughout; 2.0 very fine tubular pores; 5 percent by volume nonflat subrounded strongly coherent cemented 76-150-250 millimeter sandstone, unspecified fragments and 5 percent by volume nonflat subrounded moderately coherent cemented 2-20-75 millimeter sandstone, unspecified fragments and 10 percent by volume nonflat subrounded strongly coherent cemented 2-20-75 millimeter sandstone, unspecified fragments; very strongly acid, pH 4.9, pH meter; gradual wavy boundary.; moist when described; observed in pit, small
    A2—21 to 45 centimeters (8.3 to 17.7 inches); grayish brown (10YR 5/2) broken face, very dark grayish brown (10YR 3/2) broken face, moist; very gravelly loam; 18 percent clay; weak fine subangular blocky structure; soft, very friable, slightly sticky, nonplastic; moderate permeability; high excavation difficulty; 4.0 very fine roots throughout and 2.0 fine roots throughout; 2.0 very fine irregular and 1.0 very fine tubular and 0.5 fine tubular pores; 10 percent by volume nonflat subangular moderately coherent cemented 2-20-75 millimeter sandstone, unspecified fragments and 15 percent by volume nonflat subangular strongly cemented cemented 76-150-250 millimeter sandstone, unspecified fragments and 30 percent by volume nonflat subangular strongly cemented cemented 2-20-75 millimeter sandstone, unspecified fragments; very strongly acid, pH 4.7, pH meter; clear wavy boundary.; moist when described; observed in pit, small
    A3—45 to 70 centimeters (17.7 to 27.6 inches); grayish brown (10YR 5/2) broken face, very dark grayish brown (10YR 3/2) broken face, moist; extremely cobbly loam; 15 percent clay; weak fine subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; moderate permeability; extremely high excavation difficulty; 2.0 very fine roots throughout and 2.0 fine roots throughout; 1.0 very fine irregular and 1.0 very fine tubular pores; 10 percent by volume nonflat subangular moderately coherent cemented 2-20-76 millimeter sandstone, unspecified fragments and 10 percent by volume nonflat subangular strongly cemented cemented 2-20-76 millimeter sandstone, unspecified fragments and 55 percent by volume nonflat subangular strongly cemented cemented 75-150-250 millimeter sandstone, unspecified fragments; very strongly acid, pH 5.0, pH meter; clear irregular boundary.; moist when described; observed in pit, small
    Bw1—70 to 106 centimeters (27.6 to 41.7 inches); light yellowish brown (2.5Y 6/3) broken face, olive brown (2.5Y 4/4) broken face, moist; extremely cobbly loam; 14 percent clay; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; moderate permeability; extremely high excavation difficulty; 1.0 very fine roots throughout and 2.0 fine roots throughout; 1.0 very fine irregular pores; 20 percent distinct dark grayish brown (10YR 4/2), moist, clay films on rock fragments; 5 percent by volume nonflat subangular strongly cemented cemented 2-20-75 millimeter mudstone fragments and 10 percent by volume nonflat subangular moderately coherent cemented 2-20-75 millimeter mudstone fragments and 70 percent by volume nonflat subangular strongly cemented cemented 76-150-250 millimeter mudstone fragments; strongly acid, pH 5.2, pH meter; gradual irregular boundary.; moist when described; observed in pit, small
    Bw2—106 to 160 centimeters (41.7 to 63.0 inches); light yellowish brown (2.5Y 6/3) broken face, olive brown (2.5Y 4/3) broken face, moist; gravelly loam; 11 percent clay; weak very fine subangular blocky structure; slightly hard, friable, slightly sticky, nonplastic; moderate permeability; high excavation difficulty; 0.5 very fine roots throughout; 5 percent by volume nonflat subangular strongly cemented cemented 76-150-250 millimeter mudstone fragments and 10 percent by volume nonflat subangular moderately coherent cemented 2-20-75 millimeter mudstone fragments and 30 percent by volume nonflat subangular strongly cemented cemented 2-20-75 millimeter mudstone fragments; strongly acid, pH 5.3, pH meter.; moist when described; observed in pit, small