IDENTIFIERS

  • Current Taxon Name (Soil Name): Redtop
  • OSD
  • Series Extent
  • User Site ID: 01CA023605623
  • User Pedon ID: 01CA023605623
  • Vegetation Plot ID: 01CA023605623
  • Lab Information:
  • Certified Lab Pedon Description - no
  • Lab Source ID - SSL
  • Lab Pedon # - 02N0571
  • NCSS Pedon Lab Data NASIS Record ID - 14930
  • Print Date: 2/16/2025

    • 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: 41.0916667
  • Std. Longitude: -123.6713056
  • Datum: WGS84
  • Township: 9N
  • Range: 4E
  • Section: 12
  • PLSS Details: 2400 feet east, 2500 feet south of NE corner sec. 12.
  • Location Description: Hoopa Tribal Lands, on Big Hill Road to first left, take first left to top of ridge, site is about the middle of the ridge on the east bank cut.
  • Map Unit: 705—Darkwoods-Firmountain-Redtop complex, 30 to 50 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: Ricardo Velarde, William Reed
  • Current Taxonomic Class: Fine, parasesquic, mesic Typic Palexerults
  • Current Taxon Kind: series
  • Pedon Type: OSD pedon
  • Pedon Purpose: full pedon description
  • Pedon Record Orgin: NASIS
  • Pedon #: 1623
  • Correlated Information:
  • Soil Name - Redtop
  • PSC - 28 to 78 cm.
  • Classificaton Date - 7/3/2012
  • Soil Taxonomic Edition - eleventh edition
  • Moisture Class - xeric
  • Moisture Subclass - typic
  • Sampled As Information:
  • Soil Name - Redtop
  • Classificaton Date - 4/10/2001
  • Dynamic Soil Properties:
  • Erosion Class - 0
  • Pedoderm Loose Cover Indicator - no
  • Hydric: no


    • SITE

  • Parent Material: colluvium and residuum derived from phyllite and schist
  • Landscape: mountains
  • Landform: mountain slope
  • Geomorphic Component Mountains: mountainflank
  • Hill Slope Profile: backslope
  • Slope Complexity: complex
  • Slope Shape Across: convex
  • Slope Shape Down: convex
  • Runoff: high
  • Drainage Class: well
  • Flooding: none flooding
  • Ponding: none ponding
  • Bedrock: phyllite
  • Geology: Galice formation.
  • Surface Fragments:
  • Benchmark Soil?: no

    • VEGETATION

    SITE OBSERVATION

  • Observation Date: 4/10/2001 (actual site observation date)
  • Air Photo ID: 6250-114
  • Surface Water Kind: none observed
  • Surface Cover Properties:
  • Site Obs. Cover Kind 1 - tree cover
  • Site Obs. Cover Kind 2 - conifers
  • 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

    Arbutus menziesii

    Lithocarpus densiflorus

    Pseudotsuga menziesii

    Pacific madrone

    tanoak

    Douglas-fir

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

    ochric epipedon

    argillic horizon

    0—28

    28—206

    —28—

    —178—
    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

    —

    —

    659

    —

    260

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    Oe—0 to 6 centimeters (0.0 to 2.4 inches); dark brown (10YR 3/3) broken face, very dark brown (10YR 2/2) broken face, moist; moderately decomposed plant material; loose, loose, nonsticky, nonplastic; 2.0 fine roots; 2.0 fine irregular pores; fragments; abrupt smooth boundary.; moist when described; observed in cut
    A—6 to 28 centimeters (2.4 to 11.0 inches); reddish yellow (7.5YR 6/6) broken face, yellowish red (5YR 4/6) broken face, moist; silty clay loam; 27 percent clay; weak fine granular structure; soft, very friable, slightly sticky, slightly plastic; moderately slow permeability; 3.0 very fine roots and 1.0 very coarse roots and 2.0 medium roots and 2.0 fine roots; 10.0 fine interstitial pores; 5 percent by volume flat angular strongly coherent cemented 2-38-75 millimeter phyllite fragments; moderately acid, pH 5.8, pH meter; clear smooth boundary. Lab sample # 02N02829; moist when described; observed in cut
    BA—28 to 62 centimeters (11.0 to 24.4 inches); reddish yellow (7.5YR 6/6) broken face, red (2.5YR 4/6) broken face, moist; silty clay loam; 33 percent clay; weak fine subangular blocky structure; slightly hard, very friable, moderately sticky, moderately plastic; moderately slow permeability; 1.0 very coarse roots and 2.0 medium roots and 2.0 fine roots and 2.0 coarse roots; 2.0 fine tubular pores; 20 percent distinct clay films on all faces of peds; 5 percent by volume flat angular strongly coherent cemented 2-38-75 millimeter phyllite fragments; strongly acid, pH 5.4, pH meter; clear smooth boundary. Lab sample # 02N02830; moist when described; observed in cut
    Bt1—62 to 107 centimeters (24.4 to 42.1 inches); reddish yellow (7.5YR 6/6) broken face, red (2.5YR 4/6) broken face, moist; silty clay; 41 percent clay; weak fine subangular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; slow permeability; 0.5 very fine roots and 1.0 very coarse roots and 1.0 medium roots and 0.5 fine roots and 1.0 coarse roots; 1.0 fine tubular pores; 50 percent distinct clay films on all faces of peds; 5 percent by volume flat angular strongly coherent cemented 2-38-75 millimeter phyllite fragments; moderately acid, pH 5.6, pH meter; clear smooth boundary. Lab sample # 02N02831; moist when described; observed in cut
    Bt2—107 to 144 centimeters (42.1 to 56.7 inches); yellowish red (5YR 5/8) broken face, dark red (2.5YR 3/6) broken face, moist; silty clay; 46 percent clay; moderate fine angular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; slow permeability; 0.2 very fine roots and 3.0 very coarse roots and 0.5 medium roots and 0.2 fine roots; 1.0 fine tubular pores; 90 percent distinct clay films on all faces of peds; 10 percent by volume flat angular strongly coherent cemented 2-38-75 millimeter phyllite fragments; moderately acid, pH 5.9, pH meter; clear smooth boundary. Lab sample # 02N02832; moist when described; observed in cut
    Bt3—144 to 174 centimeters (56.7 to 68.5 inches); yellowish red (5YR 5/8) broken face, red (2.5YR 4/6) broken face, moist; silty clay; 42 percent clay; moderate medium angular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; slow permeability; 0.1 very fine roots; 1.0 fine tubular pores; 90 percent distinct clay films on all faces of peds; 10 percent by volume flat angular strongly coherent cemented 2-38-75 millimeter phyllite fragments; moderately acid, pH 5.7, pH meter; clear smooth boundary. Lab sample # 02N02833; moist when described; observed in cut
    Bt4—174 to 206 centimeters (68.5 to 81.1 inches); yellowish red (5YR 5/8) broken face, red (2.5YR 4/6) broken face, moist; silty clay loam; 38 percent clay; weak fine angular blocky structure; slightly hard, friable, moderately sticky, moderately plastic; slow permeability; 0.2 medium roots; 1.0 fine tubular pores; 80 percent distinct clay films on all faces of peds; 10 percent by volume flat angular strongly coherent cemented 2-38-75 millimeter phyllite fragments; strongly acid, pH 5.5, pH meter. Lab sample # 02N02834; moist when described; observed in cut