IDENTIFIERS

  • Current Taxon Name (Soil Name): firmountain
  • OSD
  • Series Extent
  • User Site ID: 01CA023605625
  • User Pedon ID: 01CA023605625
  • Vegetation Plot ID: 01CA023605625
  • Lab Information:
  • Certified Lab Pedon Description - yes
  • Lab Source ID - SSL
  • Lab Pedon # - 02N0573
  • NCSS Pedon Lab Data NASIS Record ID - 14932
  • 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: 41.0865000
  • Std. Longitude: -123.6525278
  • Datum: WGS84
  • Township: 8N
  • Range: 5E
  • Section: 7
  • Location Description: Hoopa Indian Reservation, Humboldt County; Big Hill Road, approximately 1.5 kilometers east of the turn off to Hostler Point.
  • Map Unit: 706—Darkwoods-Firmountain-Oakside complex, 50 to 75 percent slopes
  • State: California
  • County: CA023—Humboldt
  • MLRA: 5—Siskiyou-Trinity Area
  • Non-MLRA Soil Survey Area: CA605—Humboldt and Del Norte Area, California
  • 7.5 Minute USGS Quad: 41123-A6—Hoopa, California

    • PEDON

  • Describers Name: William Reed & Ricardo Velarde
  • Current Taxonomic Class: Loamy-skeletal over fragmental, mixed, superactive, mesic Typic Dystroxerepts
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 1625
  • Correlated Information:
  • Soil Name - firmountain
  • PSC - 25 to 90 cm.
  • Classificaton Date - 5/21/2013
  • Classifier - Jonathan Hooper
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Firmountain
  • Classificaton Date - 4/12/2001
  • Dynamic Soil Properties:
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium and residuum derived from phyllite
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank
  • Hill Slope Profile: backslope
  • Slope Position: middle third
  • Slope Complexity: complex
  • Slope Shape Across: linear
  • Slope Shape Down: linear
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: strongly coherent phyllite at 90cm with <10
  • Geology: Galice formation.
  • Surface Fragments: 5.00 percent flat subangular very strongly coherent cemented 2- to 75-millimeter phyllite,
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/12/2001 (actual site observation date)
  • Air Photo ID: 6250-112
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - intermixed conifers and hardwoods
  • 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

    ARME

    LIDE3

    PSME

    QUCH2

    Arbutus menziesii

    Lithocarpus densiflorus

    Pseudotsuga menziesii

    Quercus chrysolepis

    Pacific madrone

    tanoak

    Douglas-fir

    canyon live oak

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

    ochric epipedon

    cambic horizon

    0—25

    25—90

    —25—

    —65—
    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

    60

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    622

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    180

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    Oe—0 to 7 centimeters (0.0 to 2.8 inches); very dark gray (10YR 3/1) broken face, very dark brown (10YR 2/2) broken face, moist; moderately decomposed plant material; loose, loose, nonsticky, nonplastic; rapid permeability; 10.0 fine roots; 2.0 fine irregular pores; fragments; abrupt smooth boundary.; moist when described; observed in pit, small
    A—7 to 25 centimeters (2.8 to 9.8 inches); light gray (10YR 7/2) broken face, dark yellowish brown (10YR 4/4) broken face, moist; very channery loam; 12 percent clay; weak fine subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; moderate permeability; 0.5 very fine roots and 1.0 coarse roots; 20.0 fine interstitial pores; 55 percent by volume flat subangular very strongly coherent cemented 2-38-75 millimeter phyllite fragments; strongly acid, pH 5.2, pH meter; clear wavy boundary. Lab sample # 02N02841; moist when described; observed in pit, small
    Bw1—25 to 60 centimeters (9.8 to 23.6 inches); very pale brown (10YR 7/4) broken face, dark yellowish brown (10YR 4/6) broken face, moist; very channery loam; 11 percent clay; weak medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; moderate permeability; 0.5 very fine roots and 1.0 medium roots and 1.0 coarse roots; 5.0 fine interstitial and 1.0 fine tubular pores; 45 percent by volume flat subangular very strongly coherent cemented 2-38-75 millimeter phyllite fragments; strongly acid, pH 5.3, pH meter; clear smooth boundary. Lab sample # 02N02842; moist when described; observed in pit, small
    Bw2—60 to 90 centimeters (23.6 to 35.4 inches); very pale brown (10YR 7/4) broken face, dark yellowish brown (10YR 4/6) broken face, moist; very channery loam; 11 percent clay; weak medium subangular blocky structure; soft, very friable, slightly sticky, slightly plastic; moderate permeability; 1.0 very coarse roots and 1.0 medium roots; 5.0 fine interstitial pores; 50 percent by volume flat subangular very strongly coherent cemented 2-38-75 millimeter phyllite fragments; strongly acid, pH 5.3, pH meter; abrupt smooth boundary. Lab sample # 02N02843; moist when described; observed in pit, small
    C—90 to 172 centimeters (35.4 to 67.7 inches); channers; 11 percent clay; structureless massive; indurated; moderate permeability; 90 percent by volume flat subangular indurated 2-38-75 millimeter phyllite fragments.; moist when described; observed in pit, small